• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of highly active visible-light responsive photocatalysts by the control of surface defects

Research Project

Project/Area Number 16H04188
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Energy-related chemistry
Research InstitutionToyota Technological Institute

Principal Investigator

Yamakata Akira  豊田工業大学, 工学(系)研究科(研究院), 准教授 (60321915)

Co-Investigator(Kenkyū-buntansha) 酒多 喜久  山口大学, 大学院創成科学研究科, 教授 (40211263)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2018: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2016: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000)
Keywords光触媒 / 表面欠陥 / キャリアダイナミクス / 再結合 / 電荷移動 / 反応機構 / 時間分解分光 / 水分解 / 欠陥準位 / トラップ / 時間分解分光測定 / キャリアーダイナミクス / 再結合速度 / 助触媒 / 水分解光触媒 / 光励起キャリアー / 欠陥 / 電子正孔再結合 / 時間分解赤外分光
Outline of Final Research Achievements

Surface defects have been widely believed to accelerate the recombination and decrease the photocatalytic activities; however in this work, we found that the defects do not always decrease the photocatalytic activities. For example, the differences of photocatalytic activities between anatase, rutile and brookite TiO2 are determined by the depth of the electron traps that are associated to oxygen vacancies. The depth was shallower in the order, anatase, brookite ~ TiO2(B), and rutile. Free and shallowly trapped electrons have high reactivity, hence anatase shows highest activity for reduction. However, deep electron trapping decreases the probability to meet with holes, hence rutile shows longer lifetime of holes and exhibit the highest activity for oxidation. In the case of Ga2O3, Ca&Zn-doping makes shallow electron-trapping states and then drastically elongated the lifetime of electrons and holes. The trapped electrons keep high activity to achieve highest photocatalytic activity.

Academic Significance and Societal Importance of the Research Achievements

光触媒を用いれば、太陽エネルギーを利用して水から水素を製造することができる。しかし、工業的に用いるためには活性をさらに向上させる必要がある。光触媒活性は、光励起電子と正孔の再結合速度と反応分子への電荷移動速度で決まる。光触媒にどのような処理を施せば、どの素過程がどのように変化するのか。このようなメカニズムを解明することで高い活性と選択性を有する光触媒をより戦略的に設計することが可能になる。そのなかでも、欠陥が活性向上に役立つ場合があることを見いだしたことは特に重要である。この新しい知見は、これまでの触媒探索の方向性の転換を迫り、活性向上のブレークスルーにつながる可能性がある。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (144 results)

All 2019 2018 2017 2016 2015 Other

All Int'l Joint Research (6 results) Journal Article (33 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 33 results,  Open Access: 5 results,  Acknowledgement Compliant: 4 results) Presentation (102 results) (of which Int'l Joint Research: 40 results,  Invited: 25 results) Book (2 results) Patent(Industrial Property Rights) (1 results) (of which Overseas: 1 results)

  • [Int'l Joint Research] POSTECH(韓国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Mindanao State University(フィリピン)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] 台湾・中興大学(その他の国・地域)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] POSTECH(韓国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Mindanao State University(フィリピン)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] 中興大学(台湾)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Effect of CuFe2O4 ferrite on photocatalysis and carrier dynamics of electrospun α-Fe2O3 nanofibers by time-resolved transient absorption spectroscopy2019

    • Author(s)
      Hung Pei-Hsuan、Vequizo Junie Jhon M.、Wu Ren-An、Yamakata Akira、Tseng Wenjea J.
    • Journal Title

      Ceramics International

      Volume: - Issue: 12 Pages: 15676-15680

    • DOI

      10.1016/j.ceramint.2019.05.080

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Improvement of photocatalytic activity under visible-light irradiation by heterojunction of Cu ion loaded WO3 and Cu ion loaded N-TiO22019

    • Author(s)
      Iihoshi Tomoya、Ohwaki Takeshi、Vequizo Junie Jhon M.、Yamakata Akira
    • Journal Title

      Applied Catalysis B: Environmental

      Volume: 248 Pages: 249-254

    • DOI

      10.1016/j.apcatb.2019.01.046

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Clear and transparent nanocrystals for infrared-responsive carrier transfer2019

    • Author(s)
      Sakamoto Masanori、Kawawaki Tokuhisa、Kimura Masato、Vequizo Junie Jhon M.、Matsunaga Hironori、Ranasinghe Chandana Sampath Kumara、Yamakata Akira、Matsuzaki Hiroyuki、Furube Akihiro、Teranishi Toshiharu
    • Journal Title

      Nature Communications

      Volume: 10 Issue: 1 Pages: 406-406

    • DOI

      10.1038/s41467-018-08226-2

    • NAID

      120006554836

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sodium titanium oxide bronze nanoparticles synthesized via concurrent reduction and Na+-doping into TiO2(B)2019

    • Author(s)
      George Hasegawa,* Moeko Tanaka, Junie Jhon M. Vequizo, Akira Yamakata, Hajime Hojo, Makoto Kobayashi, Masato Kakihana, Miki Inada, Hirofumi Akamatsu, Katsuro Hayashi*
    • Journal Title

      Nanoscale

      Volume: in press Issue: 3 Pages: 1442-1450

    • DOI

      10.1039/c8nr08372j

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Curious behaviors of photogenerated electrons and holes at the defects on anatase, rutile, and brookite TiO2 powders: A review2018

    • Author(s)
      Yamakata Akira、Vequizo Junie Jhon M.
    • Journal Title

      Journal of Photochemistry and Photobiology C: Photochemistry Reviews

      Volume: - Pages: 234-243

    • DOI

      10.1016/j.jphotochemrev.2018.12.001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Plasmonic p-n Junction for Infrared Light to Chemical Energy Conversion2018

    • Author(s)
      Lian Zichao, Sakamoto Masanori, Vequizo Junie J. M., Ranasinghe C. S. Kumara, Yamakata Akira, Nagai Takuro, Kimoto Koji, Kobayashi Yoichi, Tamai Naoto, Teranishi Toshiharu
    • Journal Title

      Journal of the American Chemical Society

      Volume: 141 Issue: 6 Pages: 2446-2450

    • DOI

      10.1021/jacs.8b11544

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Enhanced Photocatalytic NOx Decomposition of Visible-light Responsive F-TiO2/(N,C)-TiO2 by Charge Transfer Between F-TiO2 and (N,C)-TiO2 through their Doping Levels2018

    • Author(s)
      S. KOMATSUDA, Y. ASAKURA, J. J. M. VEQUIZO, A. YAMAKATA, S. YIN
    • Journal Title

      Appl. Catal. B: Environ.

      Volume: 238 Pages: 358-364

    • DOI

      10.1016/j.apcatb.2018.07.038

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Expansion of the photoresponse window of a BiVO4 photocatalyst by doping with chromium(vi)2018

    • Author(s)
      Okuno Kazuya、Kato Hideki、Vequizo Junie Jhon M.、Yamakata Akira、Kobayashi Hisayoshi、Kobayashi Makoto、Kakihana Masato
    • Journal Title

      RSC Advances

      Volume: 8 Issue: 67 Pages: 38140-38145

    • DOI

      10.1039/c8ra07830k

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Copolymerization Approach to Improving Ru(II)-Complex/C3N4 Hybrid Photocatalysts for Visible-Light CO2 Reduction2018

    • Author(s)
      Constantine Tsounis, Ryo Kuriki, Kengo Shibata, Junie Jhon M. Vequizo, Daling Lu, Akira Yamakata, Osamu Ishitani, Rose Amal, Kazuhiko Maeda
    • Journal Title

      ACS Sustainable Chem. Eng.

      Volume: 6 Issue: 11 Pages: 15333-15340

    • DOI

      10.1021/acssuschemeng.8b03782

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of Interfacial Electron Transfer in Metal Complex - Semiconductor Hybrid Photocatalysts on Z-scheme CO2 Reduction under Visible Light2018

    • Author(s)
      Akinobu Nakada, Ryo Kuriki, Keita Sekizawa, Shunta Nishioka, Junie Jhon M. Vequizo, Tomoki Uchiyama, Nozomi Kawakami, Daling Lu, Akira Yamakata, Yoshiharu Uchimoto, Osamu Ishitani, Kazuhiko Maeda
    • Journal Title

      ACS Catal.

      Volume: 8 Issue: 10 Pages: 9744-9754

    • DOI

      10.1021/acscatal.8b03062

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Binary flux-promoted formation of trigonal ZnIn2S4 layered crystals using ZnS-containing industrial waste and their photocatalytic performance for H2 production2018

    • Author(s)
      Hojamberdiev Mirabbos、Cai Yanfei、Vequizo Junie Jhon M.、Khan Mohammad Mansoob、Vargas Ronald、Yubuta Kunio、Yamakata Akira、Teshima Katsuya、Hasegawa Masashi
    • Journal Title

      Green Chemistry

      Volume: 20 Issue: 16 Pages: 3845-3856

    • DOI

      10.1039/c8gc01746h

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Excited-State Dynamics of Graphitic Carbon Nitride Photocatalyst and Ultrafast Electron Injection to a Ru(II) Mononuclear Complex for Carbon Dioxide Reduction2018

    • Author(s)
      Ryo Kuriki, Chandana Sampath Kumara Ranasinghe, Yasuomi Yamazaki, Akira Yamakata, Osamu Ishitani, Kazuhiko Maeda
    • Journal Title

      J. Phys. Chem. C

      Volume: 122 Issue: 29 Pages: 16795-16802

    • DOI

      10.1021/acs.jpcc.8b03996

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Homogeneous Electron Doping into Nonstoichiometric Strontium Titanate Improves Its Photocatalytic Activity for Hydrogen and Oxygen Evolution2018

    • Author(s)
      Nishioka Shunta、Hyodo Junji、Vequizo Junie Jhon M.、Yamashita Shunsuke、Kumagai Hiromu、Kimoto Koji、Yamakata Akira、Yamazaki Yoshihiro、Maeda Kazuhiko
    • Journal Title

      ACS Catalysis

      Volume: 8 Issue: 8 Pages: 7190-7200

    • DOI

      10.1021/acscatal.8b01379

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Near Infrared Light Induced Plasmonic Hot Hole Transfer at a Nano-Heterointerface2018

    • Author(s)
      Z. Lian M. Sakamoto H. Matsunaga J. J. M. Vequizo A. Yamakata M. Haruta H. Kurata W. Ota T. Sato T. Teranishi
    • Journal Title

      Nat. Commun.

      Volume: 9 Issue: 1 Pages: 23141-7

    • DOI

      10.1038/s41467-018-04630-w

    • NAID

      120006488580

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nitrogen/fluorine-codoped rutile titania as a stable oxygen-evolution photocatalyst for solar-driven Z-scheme water splitting2018

    • Author(s)
      Miyoshi Akinobu、Vequizo Junie Jhon?M.、Nishioka Shunta、Kato Yuma、Yamamoto Muneaki、Yamashita Shunsuke、Yokoi Toshiyuki、Iwase Akihide、Nozawa Shunsuke、Yamakata Akira、Yoshida Tomoko、Kimoto Koji、Kudo Akihiko、Maeda Kazuhiko
    • Journal Title

      Sustainable Energy & Fuels

      Volume: 2 Issue: 9 Pages: 2025-2035

    • DOI

      10.1039/c8se00191j

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Undoped Layered Perovskite Oxynitride Li2LaTa2O6N for Photocatalytic CO2 Reduction with Visible Light2018

    • Author(s)
      Oshima, T.、 Ichibha, T、Qin K, S、Muraoka, K.、Vequizo, J. J. M.、Hibino, K.、Kuriki, R.、Yamashita, S.、Hongo, K.、Uchiyama, T.、Fujii, K.、Lu, D.、Maezono, R.、Yamakata, A.、Kato, H.、Kimoto, K.、Yashima, M.、Uchimoto, Y.、Kakihana, M.、Ishitani, O.、Kageyama, H.、Maeda, K.
    • Journal Title

      Angewandte Chemie International Edition

      Volume: 57 Issue: 27 Pages: 8154-8158

    • DOI

      10.1002/anie.201803931

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Characterization of silver species on graphitic carbon nitride nanosheets as promoters for photocatalytic carbon dioxide reduction under visible light with a ruthenium(II) complex2018

    • Author(s)
      Kazuhiko Maeda, Daehyeon An, Chandana Sampath Kumara Ranasinghe, Tomoki Uchiyama, Ryo Kuriki, Tomoki Kanazawa, Daling Lu, Shunsuke Nozawa, Akira Yamakata, Yoshiharu Uchimoto, Osamu Ishitani
    • Journal Title

      J. Mater. Chem. A

      Volume: 印刷中 Issue: 20 Pages: 9708-9715

    • DOI

      10.1039/c8ta03245a

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural Changes of Water Molecules during Photoelectrochemical Water Oxidation on TiO2 Thin Film Electrodes2018

    • Author(s)
      S. Chandana, R. Kumara, *A Yamakata
    • Journal Title

      Physical Chemistry and Chemical Physics

      Volume: 20 Issue: 5 Pages: 3388-3394

    • DOI

      10.1039/c7cp06646e

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Oxygen induced enhancement of NIR emission in brookite TiO2 powders: comparison with rutile and anatase TiO2 powders2018

    • Author(s)
      Vequizo Junie Jhon M.、Kamimura Sunao、Ohno Teruhisa、Yamakata Akira
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 20 Issue: 5 Pages: 3241-3248

    • DOI

      10.1039/c7cp06975h

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fabrication of robust TiO2 thin films by atomized spray pyrolysis deposition for photoelectrochemical water oxidation2018

    • Author(s)
      Ranasinghe Chandana Sampath Kumara、Vequizo Junie Jhon M.、Yamakata Akira
    • Journal Title

      Journal of Photochemistry and Photobiology A: Chemistry

      Volume: 358 Pages: 320-326

    • DOI

      10.1016/j.jphotochem.2017.09.006

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Role of CoOx cocatalyst on Ta3N5 photocatalysts studied by transient visible to mid-infrared absorption spectroscopy2018

    • Author(s)
      Vequizo Junie Jhon M.、Hojamberdiev Mirabbos、Teshima Katsuya、Yamakata Akira
    • Journal Title

      Journal of Photochemistry and Photobiology A: Chemistry

      Volume: 358 Pages: 315-319

    • DOI

      10.1016/j.jphotochem.2017.09.005

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Engaging the Flux-Grown La1-xSrxFe1-yTiyO3 Crystals in Visible-Light-Driven Photocatalytic Hydrogen Generation2017

    • Author(s)
      Hojamberdiev Mirabbos、Kawashima Kenta、Kumar Mahesh、Yamakata Akira、Yubuta Kunio、Gurlo Aleksander、Hasegawa Masashi、Domen Kazunari、Teshima Katsuya
    • Journal Title

      International Journal of Hydrogen Energy

      Volume: 42 Issue: 44 Pages: 27024-27033

    • DOI

      10.1016/j.ijhydene.2017.09.036

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Elucidating the impact of A-site cation change on photocatalytic H2 and O2 evolution activities of perovskite-type LnTaON2 (Ln = La and Pr)2017

    • Author(s)
      Hojamberdiev Mirabbos、Bekheet Maged F.、Hart Judy N.、Vequizo Junie Jhon M.、Yamakata Akira、Yubuta Kunio、Gurlo Aleksander、Hasegawa Masashi、Domen Kazunari、Teshima Katsuya
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 19 Issue: 33 Pages: 22210-22220

    • DOI

      10.1039/c7cp03714g

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Interfacial Manipulation by Rutile TiO2 Nanoparticles to Boost CO2 Reduction into CO on a Metal-Complex/Semiconductor Hybrid Photocatalyst2017

    • Author(s)
      Keisuke Wada, Chandana Sampath Kumara Ranasinghe, Ryo Kuriki, Akira Yamakata, Osamu Ishitani, Kazuhiko Maeda
    • Journal Title

      ACS Appl. Mater. Interfaces

      Volume: 9 Issue: 28 Pages: 23869-23877

    • DOI

      10.1021/acsami.7b07484

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Trapping-Induced Enhancement of Photocatalytic Activity on Brookite TiO2 Powders: Comparison with Anatase and Rutile TiO2 Powders2017

    • Author(s)
      Vequizo Junie Jhon M.、Matsunaga Hironori、Ishiku Tatsuya、Kamimura Sunao、Ohno Teruhisa、Yamakata Akira
    • Journal Title

      ACS Catalysis

      Volume: 7 Issue: 4 Pages: 2644-2651

    • DOI

      10.1021/acscatal.7b00131

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solar-driven Z-scheme water splitting using tantalum/nitrogen co-doped rutile titania nanorod as an oxygen evolution photocatalyst2017

    • Author(s)
      A. Nakada, S. Nishioka, J. J. M. Vequizo, K. Muraoka, T. Kanazawa A. Yamakata, S. Nozawa, H. Kumagai, S. Adachi, O. Ishitani, K. Maeda
    • Journal Title

      Journal of Materials Chemistry A

      Volume: . Issue: 23 Pages: 11710-11719

    • DOI

      10.1039/c6ta10541f

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Cation-dependent restructure of the electric double layer on CO-covered Pt electrodes: Difference between hydrophilic and hydrophobic cations2017

    • Author(s)
      Yamakata Akira、Osawa Masatoshi
    • Journal Title

      Journal of Electroanalytical Chemistry

      Volume: 800 Pages: 19-24

    • DOI

      10.1016/j.jelechem.2016.12.034

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dynamics of Photogenerated Charge Carriers on Ni- and Ta-Doped SrTiO3 Photocatalysts Studied by Time-Resolved Absorption and Emission Spectroscopy2016

    • Author(s)
      Akira Yamakata, Masayuki Kawaguchi, Ryosuke Murachi, Masahiro Okawa, Itaru Kamiya
    • Journal Title

      J. Phys. Chem. C

      Volume: 120 Issue: 15 Pages: 7997-8004

    • DOI

      10.1021/acs.jpcc.6b01494

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Nature-Inspired, Highly Durable CO2 Reduction System Consisting of a Binuclear Ruthenium(II) Complex and an Organic Semiconductor Using Visible Light2016

    • Author(s)
      Ryo Kuriki, Hironori Matsunaga, Takuya Nakashima, Keisuke Wada, Akira Yamakata, Osamu Ishitani, Kazuhiko Maeda
    • Journal Title

      J. Am. Chem. Soc.

      Volume: 138 Issue: 15 Pages: 5159-5170

    • DOI

      10.1021/jacs.6b01997

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Enhancement of photoelectrochemical activity of SnS thin-film photoelectrodes using TiO2, Nb2O5, and Ta2O5metal oxide layers2016

    • Author(s)
      Vequizo Junie Jhon M.、Yokoyama Masanori、Ichimura Masaya、Yamakata Akira
    • Journal Title

      Applied Physics Express

      Volume: 9 Issue: 6 Pages: 067101-067101

    • DOI

      10.7567/apex.9.067101

    • NAID

      210000155729

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The contrasting effect of the Ta/Nb ratio in (111)-layered B-site deficient hexagonal perovskite Ba5Nb4?xTaxO15 crystals on visible-light-induced photocatalytic water oxidation activity of their oxynitride derivatives2016

    • Author(s)
      Hojamberdiev Mirabbos、Bekheet Maged F.、Zahedi Ehsan、Wagata Hajime、Vequizo Junie Jhon M.、Yamakata Akira、Yubuta Kunio、Gurlo Aleksander、Domen Kazunari、Teshima Katsuya
    • Journal Title

      Dalton Transactions

      Volume: 45 Issue: 31 Pages: 12559-12568

    • DOI

      10.1039/c6dt02095j

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 酸化チタン光触媒のキャリアーダイナミクス-粉末におけるアナターゼとルチルの特異的な挙動-2016

    • Author(s)
      山方啓
    • Journal Title

      光化学

      Volume: 47 Pages: 25-32

    • NAID

      40020839233

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photocatalytic property of metal ion added SrTiO3 to Overall H2O splitting2015

    • Author(s)
      Yoshihisa Sakata, Yoshiko Miyoshi, Tatsuya Maeda, Kohki Ishikiriyama, Yuki Yamazaki, Hayao Imamura, Yeilin Ham, Takashi Hisatomi, Jun Kubota, Akira Yamakata, Kazunari Domen
    • Journal Title

      Applied Catalysis A: General

      Volume: 印刷中 Pages: 227-232

    • DOI

      10.1016/j.apcata.2015.12.013

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Curious Behaviors of Photogenerated Charge Carriers at the Defects on Powder Photocatalysts2019

    • Author(s)
      Akira Yamakata
    • Organizer
      International Workshop on Crystalline Materials and Applications (IWCMA-2019)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高性能光触媒の設計を目指した反応機構の解明2019

    • Author(s)
      山方啓
    • Organizer
      中央大学理工学部 研究セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 各種助触媒担持による層状酸ハロゲン化物光触媒の水分解活性向上2019

    • Author(s)
      小川幹太, 中田明伸, 鈴木肇, 冨田修, 東正信, 山方啓, 佐伯昭紀, 阿部竜
    • Organizer
      第123回触媒討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] BiVO4光触媒へのボールミル処理効果2019

    • Author(s)
      奥野和哉, Junie Jhon M. Vequizo, 山方啓, 垣花眞人, 加藤英樹
    • Organizer
      第123回触媒討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 酸素分圧制御下で合成した不定比SrTiO3-δの光触媒活性への電子ドーピング効果2019

    • Author(s)
      西岡駿太, 兵頭潤次, Junie Jhon M. Vequizo, 山下俊介, 熊谷啓, 木本浩司, 山方啓, 山崎仁丈, 前田和彦
    • Organizer
      第123回触媒討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] How the Defects Affects the Photocatalytic Activity on Powder and Single Crystalline TiO22018

    • Author(s)
      Akira Yamakata
    • Organizer
      International Conference on Ceramic Materials and Components for Energy and Environmental Applications (CMCEE 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Defects Induced Enhancement of Ga2O3 Based Photocatalysts Studied by Time-Resolved Absorption Spectroscopy2018

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo, Yoshihisa Sakata
    • Organizer
      2018 International Symposium on Advancement and Prospect of Catalysis Science & Technology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The Role of Powder Defects for Efficient Photocatalytic Reactions2018

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo
    • Organizer
      The 22nd International Conference on Photochemical Conversion and Storage of Solar Energy (IPS-22)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Remarkable Activity Enhancement of Ca and Zn Doped Ga2O3 Photocatalysts Studied by Transient Absorption Spectroscopy2018

    • Author(s)
      Junie Jhon M. Vequizo, Shouta Ishiyama, Yoshihisa Sakata, Akira Yamakata
    • Organizer
      The 22nd International Conference on Photochemical Conversion and Storage of Solar Energy (IPS-22)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of Surface Defects on Powder Photocatalysts Studied by Time-resolved Visible to Mid-IR Absorption Spectroscopy2018

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo
    • Organizer
      International Workshop on Water Splitting: Challenges and Opportunity
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Synthesis of 2D perovskite oxynitride Li2LaTa2O6N and the photocatalytic performance for CO2 reduction2018

    • Author(s)
      Takayoshi Oshima, Kanemichi Muraoka, Junie Jhon M. Vequizo, Sunsuke Yamashita, Akira Yamakata, Koji Kimoto, Osamu Ishitani, Kazuhiko Maeda
    • Organizer
      The 8th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT8)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of electron doping with oxygen defect introduction on photocatalytic hydrogen/oxygen evolution activity of non-stoichiometric SrTiO3-δ2018

    • Author(s)
      Shunta Nishioka, Junji Hyodo, Junie Jhon M. Vequizo, Shunsuke Yamashita, Hiromu Kumagai, Koji Kimoto, Akira Yamakata, Yoshihiro Yamazaki, Kazuhiko Maeda
    • Organizer
      The 8th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT8)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Oxygen-doped Ta3N5 modified with a Ru(II) binuclear complex having the ability to reduce CO2 under a wide range of visible light2018

    • Author(s)
      Kanemichi Muraoka, Junie Jhon M. Vequizo, Akira Yamakata, Osamu Ishitani, Kazuhiko Maeda
    • Organizer
      The 8th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT8)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nitrogen/fluorine codoped rutile titanium(IV) oxide as a visible-light-driven photocatalyst for water oxidation2018

    • Author(s)
      Akinobu Miyoshi, Yuma Kato, Junie Jhon M. Vequizo, Shunsuke Yamashita, Shunsuke Nozawa, Akira Yamakata, Tomoko Yoshida, Koji Kimoto, Kazuhiko Maeda
    • Organizer
      The 8th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT8)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Photocatalytic CO2 reduction under visible light using carbon nitride and a binuclear Ru(II) complex2018

    • Author(s)
      Ryo Kuriki, Akira Yamakata, Osamu Ishitani, Kazuhiko Maeda
    • Organizer
      The 8th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT8)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Behavior of Photogenerated Charge Carriers on Highly Efficient Photocatalysts2018

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo
    • Organizer
      The 8th Advanced Functional Materials and Devices (AFMD 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ソルボサーマル反応をベースとした光触媒コンポジットの合成と活性向上2018

    • Author(s)
      小松田紫央, 朝倉裕介, Junie Jhon M. Vequizo, 山方啓, 殷シュウ
    • Organizer
      (公社) 日本セラミックス協会 第31回秋季シンポジウム 特定セッション 水溶液プロセスが可能にするセラミックス合成
    • Related Report
      2018 Annual Research Report
  • [Presentation] 時間分解分光測定を利用した高活性光触媒の反応機構解明2018

    • Author(s)
      山方啓, Junie Jhon M. Vequizo
    • Organizer
      (公社) 日本セラミックス協会 第31回秋季シンポジウム 特定セッション 先進的な構造科学と分析技術
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Synthesis of nitrogen/fluorine codoped rutile TiO2 photocatalyst and its application for Z-scheme water splitting2018

    • Author(s)
      Akinobu Miyoshi, Junie Jhon M. Vequizo, Shunta Nishioka, Shunsuke Yamashita, Akihide Iwase, Shunsuke Nozawa, Akira Yamakata, Koji Kimoto, Akihiko Kudo, Kazuhiko Maeda
    • Organizer
      2018年光化学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Dynamics of photocarriers in reduced TiO2 studied by transient visible to mid-IR absorption spectroscopy2018

    • Author(s)
      Junie Jhon M. Vequizo, Fumiaki Amano, Akira Yamakata
    • Organizer
      2018年光化学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 光触媒粒子における電子のトラップ過程と蓄積過程2018

    • Author(s)
      山方啓, Junie Jhon M. Vequizo, 岡村翔, 白木恭平
    • Organizer
      第12回分子科学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 金属酸窒化物光触媒における光励起キャリアーの過渡吸収2018

    • Author(s)
      山方啓, Junie Jhon M. Vequizo, Mirabbos Hojamberdiev, Shanshan Chen, 手島勝弥, 堂免一成
    • Organizer
      第122回触媒討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Impact of Cocatalyst on the Dynamics of Photocarriers in Ga2O3 Powders Studied by Time-Resolved Absorption Spectroscopy2018

    • Author(s)
      Junie Jhon M. Vequizo, Shouta Ishiyama, Yoshihisa Sakata, Akira Yamakata
    • Organizer
      第122回触媒討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Electron Transfer to Water Molecules on Rh-loaded Ga2O3 Photocatalysts2018

    • Author(s)
      Junie Jhon M. Vequizo, Shoya Tsuboi, Shouta Ishiyama, Yoshihisa Sakata, Akira Yamakata
    • Organizer
      グリーン電子素子・材料研究センター 最終年度シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] 過渡吸収分光測定を用いた光触媒粒子の光励起ダイナミクス2018

    • Author(s)
      山方啓
    • Organizer
      第49回中部化学関係学協会支部連合秋季大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] ポンププローブ法による界面ダイナミクス2018

    • Author(s)
      山方啓
    • Organizer
      2018年電気化学会関東支部セミナー 先端計測技術による電極界面分析の新展開
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 高活性光触媒の実現を目指した新しい分光測定技術の開発2018

    • Author(s)
      山方啓
    • Organizer
      第11回ワークショップ 固体材料合成および評価技術の新展開
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Time-resolved Absorption Study on the Behavior of Photogenerated Electrons and Holes in Highly Active Photocatalysts2018

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo
    • Organizer
      Functional Ceramics forum for the upcoming Annual Materials Science Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Curious Behavior of Photogenerated Electrons and Holes in Single-crystalline and Powder Photocatalysts2018

    • Author(s)
      Akira Yamakata
    • Organizer
      Research Seminar at National Chung Hsing University
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Time-Resolved Visible to mid-IR Absorption Study of Photodynamics on Powder Photocatalysts2018

    • Author(s)
      Akira Yamakata
    • Organizer
      Research Seminar at National Chiao Tung University
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 超高活性Ga2O3系水分解光触媒の光励起ダイナミクス2018

    • Author(s)
      山方啓, Junie Jhon M. Vequizo, 石山翔太, 酒多喜久
    • Organizer
      表面・界面スペクトロスコピー2018
    • Related Report
      2018 Annual Research Report
  • [Presentation] 時間分解分光測定による高活性光触媒反応のメカニズム解明2018

    • Author(s)
      山方啓
    • Organizer
      熊本大学工学部研究セミナー
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Trapping-Induced Enhancement of Photocatalytic Activity on TiO2 Powders2018

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo
    • Organizer
      International Congress on Pure & Applied Chemistry (ICPAC) 2018
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Oxygen-Doped Ta3N5 as a Building Block for Z-scheme CO2 Reduction with a Binuclear Ru(II) Complex Workable under a Wide Range of Visible Light2018

    • Author(s)
      Kanemichi Muraoka, Junie Jhon M. Vequizo, Akira Yamakata, Osamu Ishitani, Kazuhiko Maeda
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Improvement of photocatalytic activity under visible light irradiation by composite with Cu/WO3 and Cu/N-TiO2.2018

    • Author(s)
      Takeshi Ohwaki, Akira Yamakata, Junie Jhon M. Vequizo, Tomoya IIhoshi
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Synthesis and photocatalytic activity of a layered perovskite oxynitride Li2LaTa2O6N2018

    • Author(s)
      Takayoshi Oshima, Kanemichi Muraoka, Junie Jhon M. Vequizo, Shunsuke Yamashita, Akira Yamakata, Koji Kimoto, Osamu Ishitani, Kazuhiko Maeda
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] C3N4の光励起キャリアダイナミクスと錯体触媒への電子移動過程の観察2018

    • Author(s)
      栗木亮, Chandana Sampath Kumara Ranasinghe, 山方啓, 石谷治, 前田和彦
    • Organizer
      第121回触媒討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Photocatalytic Activity of Oxygen Deficient SrTiO3-d Prepared by Reduced Atmosphere Calcination2017

    • Author(s)
      Shunta Nishioka, Junji Hyodo, Akira Yamakata, Yoshihiro Yamazaki, Kazuhiko Maeda
    • Organizer
      16th Korea-Japan Symposium on Catalysis & 3rd International Symposium of Institute for Catalysis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Behavior of Photogenerated Charge Carriers in BiVO4 Based Heterojunctions2017

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      16th Korea-Japan Symposium on Catalysis & 3rd International Symposium of Institute for Catalysis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamics of Photocarriers in Ga2O3-based Photocatalyst Studied by Transient Absorption Spectroscopy2017

    • Author(s)
      Junie Jhon M. Vequizo, Shouta Ishiyama, Yoshihisa Sakata, Akira Yamakata
    • Organizer
      16th Korea-Japan Symposium on Catalysis & 3rd International Symposium of Institute for Catalysis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Water Splitting and CO2 Fixation on Visible-Light-Responsive Rutile TiO2-based Photocatalysts2017

    • Author(s)
      Kazuhiko Maeda, Akinobu Nakada, Koki Ishimaki, Junie Jhon M. Vequizo, Akira Yamakata, Osamu Ishitani
    • Organizer
      16th Korea-Japan Symposium on Catalysis & 3rd International Symposium of Institute for Catalysis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Difference in the Behavior of Photogenerated Electrons and Holes on Anatase and Rutile TiO2 Powders2017

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo, Hironori Matsunaga
    • Organizer
      16th Korea-Japan Symposium on Catalysis & 3rd International Symposium of Institute for Catalysis
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Behaviors of Photogenerated Electrons and Holes in Photoelectrochemical Interfaces2017

    • Author(s)
      Akira Yamakata
    • Organizer
      International Symposium on Pure & Applied Chemistry (ISPAC) 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Reaction dynamics at the liquid/solid soft-interfaces2017

    • Author(s)
      Akira Yamakata
    • Organizer
      KAKENHI International Symposium on “Studying the Function of Soft Molecular Systems”
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 金属酸窒化物複合アニオン型光触媒のキャリアーダイナミクス2017

    • Author(s)
      山方啓
    • Organizer
      新学術領域研究 (平成28-32年度) 複合アニオン化合物の創製と新機能 第2回トピカル会議 (機能)
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Effects of the Preparation Methods of Na ion Doped SrTiO3 to the Photocatalytic Property of Overall H2O Splitting2017

    • Author(s)
      Kohki Ishikiriyama, Yosuke Goto, Takashi Hisatomi, Toshiya Yokogawa, Akira Yamakata, Yoshihisa Sakata, Kazunari Domen
    • Organizer
      13th European Congress on Catalysis (EUROPACAT 2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influences of the Metal Ion Addition to Ga2O3 to the Photocatalytic Property of Overall H2O Splitting2017

    • Author(s)
      Shota Ishiyama, Shiqi Zhang, Akira Yamakata, Toshiya Yokogawa, Yoshihisa Sakata
    • Organizer
      13th European Congress on Catalysis (EUROPACAT 2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of hybrid photocatalysts for visible-light CO2 reduction using carbon nitride and a binuclear Ru(II) complex2017

    • Author(s)
      Ryo Kuriki, Akira Yamakata, Osamu Ishitani, Kazuhiko Maeda
    • Organizer
      2017年光化学討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Fabrication of Highly Efficient TiO2 Photoanodes by Atomized Spray Pyrolysis Deposition2017

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      2017年光化学討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Dynamics of Photocarriers in Metal Ion Doped Ga2O3 Photocatalysts Studied by Transient Absorption Spectroscopy2017

    • Author(s)
      Junie Jhon M. Vequizo, Shouta Ishiyama, Yoshihisa Sakata, Akira Yamakata
    • Organizer
      2017年光化学討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 金属イオン添加Ga2O3光触媒のH2O完全分解反応に対する光触媒特性2017

    • Author(s)
      石山翔太, 横川俊哉, 山方啓, 酒多喜久
    • Organizer
      第120回触媒討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] コバルト酸化物を担持した酸化チタンのキャリアーダイナミクス2017

    • Author(s)
      汪雨濃, Junie Jhon M. Vequizo, 岡崎めぐみ, 前田和彦, 山方啓
    • Organizer
      第120回触媒討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Behavior of Photogenerated Charge Carriers in SnO2/BiVO4/CoOx Heterostructure Studied by Transient Absorption Spectroscopy2017

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      第120回触媒討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Effects of Metal Ion-Doping on Ga2O3 Photocatalysts Studied by Transient Absorption Spectroscopy2017

    • Author(s)
      Junie Jhon M. Vequizo, Shouta Ishiyama, Yoshihisa Sakata, Akira Yamakata
    • Organizer
      第120回触媒討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 金属イオンをドープしたGa2O3の光励起ダイナミクス2017

    • Author(s)
      山方啓, Junie Jhon M. Vequizo, 石山翔太, 酒多喜久
    • Organizer
      第11回分子科学討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Transient Absorption Study of Photogenerated Charge Carriers in Electrochemical Systems2017

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      スマートエネルギー技術研究センター 第10回シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] Effects of Surface Modification on Powder Photocatalysts Studied by Transient Absorption Spectroscopy2017

    • Author(s)
      Junie Jhon M. Vequizo, Chandana Sampath Kumara Ranasinghe, Shouta Ishiyama, Yoshihisa Sakata, Akira Yamakata
    • Organizer
      スマートエネルギー技術研究センター 第10回シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] 超高活性Ga2O3系水分解光触媒の反応機構2017

    • Author(s)
      山方啓
    • Organizer
      スマートエネルギー技術研究センター 第10回シンポジウム
    • Related Report
      2017 Annual Research Report
  • [Presentation] Impact of Metal Ion Doping on Ga2O3 Photocatalysts Studied by Transient Absorption Spectroscopy2017

    • Author(s)
      Junie Jhon M. Vequizo, Akira Yamakata
    • Organizer
      2017 ASEAN Conference on Advanced Functional Materials and Nanotechnology (ASEAN-AFMN)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mechanism of Photocatalytic Reactions on TiO2 Powders2017

    • Author(s)
      Akira Yamakata
    • Organizer
      19th SPVM National Physics Conference, 2017 ASEAN Conference on Advanced Functional Materials and Nanotechnology (ASEAN-AFMN), and 5th International Meeting on Complex Systems (IMCS)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Carrier Dynamics on TiO2 Powders Studied by Time-Resolved IR Absorption Spectroscopy2017

    • Author(s)
      Pei-Hsuan Hung, Junie Jhon M. Vequizo, Akira Yamakata, Wenjea J. Tseng
    • Organizer
      6th International Symposium on Advanced Ceramics and Technology for Sustainable Energy Applications toward a Low Carbon Society (ACTSEA 2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Trapping States and Behavior of Photocarriers in Brookite TiO2 Powders Studied by Transient Absorption and Emission Spectroscopies2017

    • Author(s)
      Junie Jhon M. Vequizo, Hironori Matsunaga, Teruhisa Ohno, Akira Yamakata
    • Organizer
      The 6th Toyota RIKEN International Workshop 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Behaviors of Electrons and Holes in Photocatalysts Studied by Time-resolved Visible to Mid-IR Absorption Spectroscopy2017

    • Author(s)
      Akira Yamakata
    • Organizer
      International Conference on Photochemistry and Its Applications (ICPA 2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Behaviors of Photogenerated Electrons and Holes on TiO2 Powder Photocatalysts2017

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo, Hironori Matsunaga
    • Organizer
      The 22nd International Conference on Semiconductor Photocatalysis and Solar Energy Conversion (SPASEC-22)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Principal Difference in the Behaviors of Photogenerated e- and h+ in Anatase and Rutile TiO2 Powders2017

    • Author(s)
      Akira Yamakata
    • Organizer
      東京大学第5回伊藤国際学術研究センター会議 (IIRC5) -Forefront of Molecular Dynamics at Surfaces and Interfaces: From a single molecule to catalytic reaction-
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 酸素空孔濃度および電子濃度を制御したSrTiO3における光触媒特性 -欠陥化学と光化学反応-2017

    • Author(s)
      兵頭潤次, 西岡駿太, 熊谷啓, 前田和彦, Junie Jhon M. Vequizo, 山方啓, 山崎仁丈
    • Organizer
      第43回固体イオニクス討論会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Photodynamics of Brookite TiO2 Photocatalyst Studied by Time-resolved Vis to mid-IR Absorption Spectroscopy2017

    • Author(s)
      Junie Jhon M. Vequizo, Hironori Matsunaga, Sunao Kamimura, Teruhisa Ohno, Akira Yamakata
    • Organizer
      Artificial Photosynthesis: Faraday Discussion
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Behavior of photogenerated electrons and holes at the defects on anatase and rutile TiO2 powders studied by transient absorption spectroscopy from visible to mid-IR region2017

    • Author(s)
      Akira Yamakata, Junie Jhon M. Vequizo, Hironori Matsunaga
    • Organizer
      2017 International Conference on Artificial Photosynthesis (ICARP2017)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光励起キャリアーの動きとエネルギー制御2017

    • Author(s)
      山方啓
    • Organizer
      JSTさきがけ 「光エネルギーと物質変換」 第3期研究者研究成果報告会
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Visible-light-driven photocatalytic CO2 reduction reaction using hybrid with an organic semiconductor and a Ru(II) binuclear complex2017

    • Author(s)
      Ryo Kuriki Akira Yamakata Osamu Ishitani Kazuhiko Maeda
    • Organizer
      日本化学会第97春季年会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Time-resolved Absorption Study on the Behavior of Photogenerated Charge Carriers in Visible-Light Active Photoelectrochemical Systems2017

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      「スマートエネルギー技術研究センター」 第9回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] Enhancement of Photocatalytic Activity in BiVO4 Based Visible Active Photoanodes2017

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      先進触媒開発研究センター 第1回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] Photodynamics of Anatase, Rutile and Brookite TiO2 Powders Studied by Transient Absorption Spectroscopy2017

    • Author(s)
      Junie Jhon M. Vequizo, Hironori Matsunaga, Akira Yamakata, Teruhisa Ohno
    • Organizer
      「スマートエネルギー技術研究センター」 第9回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] Distinctive Behavior of Photocarriers in TiO2 Powders (Anatase, Rutile, and Brookite) Studied by Transient Absorption Spectroscopy2017

    • Author(s)
      Junie Jhon M. Vequizo, Hironori Matsunaga, Akira Yamakata, Teruhisa Ohno
    • Organizer
      先進触媒開発研究センター 第1回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] 半導体光触媒の光励起ダイナミクス2017

    • Author(s)
      山方啓
    • Organizer
      先進触媒開発研究センター 第1回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] フェムト秒時間分解分光法による単結晶と粉末TiO2の光励起キャリアの挙動とエネルギー状態2017

    • Author(s)
      松永大典, Junie Jhon M. Vequizo, 山方啓
    • Organizer
      先進触媒開発研究センター 第1回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] Caイオンを添加したGa2O3のH2O完全分解反応に対する光触媒特性2017

    • Author(s)
      石山翔太 張仕麒 横川俊哉 山方啓 酒多喜久
    • Organizer
      第119回触媒討論会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Time-resolved IR absorption study of photogenerated charge carrier dynamics in BiVO4/SnO2 and BiVO4/CoOX hetero junctions2016

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      4th Conference on Sri Lanka - Japan Collaborative Research - 2016 (SLJCR2016)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamics of Photocarriers of Brookite TiO2 Studied by Spectroscopic Techniques: A Comparison with Anatase and Rutile TiO2 Photocatalysts2016

    • Author(s)
      Junie Jhon M. Vequizo, Hironori Matsunaga, Teruhisa Ohno, Akira Yamakata
    • Organizer
      第26回日本MRS年次大会
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamics of Photocarriers of Metal Nitrides/Oxynitrides Studied by Transient Absorption Spectroscopy: Controlling the Effects of Defects2016

    • Author(s)
      Junie Jhon M. Vequizo, Akira Yamakata, Mirabbos Hojamberdiev, Kenta Kawashima, Hajime Wagata, Kunio Yubuta, Shuji Oishi, Kazunari Domen, Katsuya Teshima
    • Organizer
      2016 International Conference on Materials Science and Nanotechnology (ICMSN)
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Behavior of Photogenerated Electrons and Holes on Anatase and Rutile TiO2 Powders2016

    • Author(s)
      Akira Yamakata
    • Organizer
      Collaborative Conference on 3D and Materials Research (CC3DMR) 2016
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Curious Behaviors of Photogenerated e- and h+ in Anatase and Rutile TiO2 Powders2016

    • Author(s)
      Akira Yamakata
    • Organizer
      IKM International Symposium on Pure & Applied Chemistry (ISPAC) 2016
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Transient Absorption Study of Photogenerated Charge Carriers in Electrochemical Systems2016

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      第118回触媒討論会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 柔らかな固液界面における化学反応ダイナミクス -TiO2 光電極における光励起ダイナミクス-2016

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      新学術領域研究 柔らかな分子系 第4回公開シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] Photogenerated Electron-Hole Dynamics in BiVO4 Based Photoelectrodes2016

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      「スマートエネルギー技術研究センター」 第8回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] Behaviors of Photogenerated Electrons and Holes in SnO2/BiVO4/CoOx Heterojunctions2016

    • Author(s)
      Chandana Sampath Kumara Ranasinghe, Akira Yamakata
    • Organizer
      第16回日本表面科学会中部支部 学術講演会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Transient Absorption and FT-IR Analysis of the Carrier Dynamics of TiO2 Photocatalysts2016

    • Author(s)
      Junie Jhon M. Vequizo Hironori Matsunaga Shou Okamura Teruhisa Ohno Akira Yamakata
    • Organizer
      第36回表面科学学術講演会
    • Related Report
      2016 Annual Research Report
  • [Presentation] Dynamics of Photocarriers of Brookite TiO2 Photocatalyst Studied by Transient Absorption and Emission Spectroscopy2016

    • Author(s)
      Junie Jhon M. Vequizo, Hironori Matsunaga, Shou Okamura, Teruhisa Ohno, Akira Yamakata
    • Organizer
      「スマートエネルギー技術研究センター」 第8回シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] Transient Visible to Mid-IR Absorption Spectroscopic Analysis of the Dynamics of Photocarriers in Metal Nitride/Oxynitride Photocatalysts2016

    • Author(s)
      Junie Jhon M. Vequizo Akira Yamakata Mirabbos Hojamberdiev Kenta Kawashima Hajime Wagata Kunio Yubuta Shuji Oishi Kazunari Domen Katsuya Teshima
    • Organizer
      第118回触媒討論会
    • Related Report
      2016 Annual Research Report
  • [Presentation] ブルッカイト酸化チタンのキャリアーダイナミクス2016

    • Author(s)
      Junie Jhon M. Vequizo 松永大典 山方啓 横野照尚
    • Organizer
      第35回光がかかわる触媒化学シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] 有機半導体と金属錯体との複合体を光触媒とした可視光駆動型CO2還元光触媒反応2016

    • Author(s)
      栗木亮 松永大典 中島拓哉 山方啓 石谷治 前田和彦
    • Organizer
      第118回触媒討論会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 半導体光触媒の光励起ダイナミクス2016

    • Author(s)
      山方啓
    • Organizer
      第2回 「半導体による太陽光-水素エネルギー変換技術研究会」
    • Related Report
      2016 Annual Research Report
  • [Presentation] 時間分解分光測定を利用した金属微粒子を担持した光触媒のキャリアーダイナミクス2016

    • Author(s)
      山方啓
    • Organizer
      第36回表面科学学術講演会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 新しい分光技術を利用した光触媒反応の機構解明2016

    • Author(s)
      山方啓
    • Organizer
      山口大学 光・エネルギー研究センターシンポジウム 光科学が生み出す新しい世界-光制御と分光技術の最前線-
    • Related Report
      2016 Annual Research Report
  • [Presentation] 時間分解可視赤外分光法を用いた粉末酸化チタンのキャリアーダイナミクス2016

    • Author(s)
      山方啓, Junie Jhon M. Vequizo, 松永大典
    • Organizer
      第10回分子科学討論会2016
    • Related Report
      2016 Annual Research Report
  • [Presentation] フェムト秒時間分解分光法を用いたTiO2 粉末と単結晶のキャリアダイナミクス2016

    • Author(s)
      山方啓, Junie Jhon M. Vequizo, 松永大典
    • Organizer
      2016年光化学討論会
    • Related Report
      2016 Annual Research Report
  • [Presentation] フェムト秒時間分解分光法による酸化チタン光触媒のキャリアダイナミクス2016

    • Author(s)
      松永大典, Junie Jhon M. Vequizo, 山方啓
    • Organizer
      2016年電気化学会北海道支部・東海支部合同シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] フェムト秒時間分解分光測定を用いた光触媒のキャリアダイナミクス2016

    • Author(s)
      松永大典, Junie Jhon M. Vequizo, 山方啓
    • Organizer
      第36回表面科学学術講演会
    • Related Report
      2016 Annual Research Report
  • [Presentation] フェムト秒時間分解分光測定を用いた酸化チタン表面欠陥におけるキャリアダイナミクス2016

    • Author(s)
      松永大典, Junie Jhon M. Vequizo, 山方啓
    • Organizer
      第16回日本表面科学会中部支部 学術講演会
    • Related Report
      2016 Annual Research Report
  • [Presentation] 柔らかな固液界面における化学反応ダイナミクス -フェムト秒時間分解分光法による光触媒の光励起ダイナミクス-2016

    • Author(s)
      松永大典 山方啓
    • Organizer
      新学術領域研究 柔らかな分子系 第4回公開シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] 酸素欠陥濃度を制御した不定比SrTiO3-δの水分解光触媒活性2016

    • Author(s)
      西岡駿太 兵頭潤次 山方啓 山崎仁丈 前田和彦
    • Organizer
      第35回光がかかわる触媒化学シンポジウム
    • Related Report
      2016 Annual Research Report
  • [Presentation] 酸素欠損型不定比SrTiO3-δの水分解光触媒活性2016

    • Author(s)
      西岡駿太 兵頭潤次 山方啓 山崎仁丈 前田和彦
    • Organizer
      第118回触媒討論会
    • Related Report
      2016 Annual Research Report
  • [Book] エネルギー変換型光触媒;コラム 9 「時間分解過渡吸収分光法によるキャリアダイナミクスの解明」2017

    • Author(s)
      日本化学会、久富 隆史、久保田 純、堂免 一成;山方啓 (コラム執筆)
    • Total Pages
      136
    • Publisher
      共立出版
    • ISBN
      9784320044623
    • Related Report
      2017 Annual Research Report
  • [Book] 『光触媒/光半導体を利用した人工光合成 ~最先端科学から実装技術への発展を目指して~』第3編第5章2017

    • Author(s)
      山方啓 (章著)
    • Total Pages
      238
    • Publisher
      ㈱エヌ・ティー・エス
    • Related Report
      2016 Annual Research Report
  • [Patent(Industrial Property Rights)] 構造物及びその製造方法2018

    • Inventor(s)
      山方啓
    • Industrial Property Rights Holder
      山方啓
    • Industrial Property Rights Type
      特許
    • Filing Date
      2018
    • Related Report
      2017 Annual Research Report
    • Overseas

URL: 

Published: 2016-04-21   Modified: 2022-08-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi