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

Development of Analytical Method for Energy-resolved Distribution of Electron Traps for Identification and Detailed Analysis of Metal-oxide Powders

Research Project

Project/Area Number 18H03923
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 36:Inorganic materials chemistry, energy-related chemistry, and related fields
Research InstitutionHokkaido University

Principal Investigator

Ohtani Bunsho  北海道大学, 触媒科学研究所, 教授 (80176924)

Co-Investigator(Kenkyū-buntansha) 高島 舞  北海道大学, 触媒科学研究所, 助教 (10772345)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥40,040,000 (Direct Cost: ¥30,800,000、Indirect Cost: ¥9,240,000)
Fiscal Year 2020: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
Fiscal Year 2019: ¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Fiscal Year 2018: ¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Keywords電子トラップ / 光音響分光法 / エネルギー分布 / 同定 / 純度 / 粒子混合均一性 / ワイドバンドギャップ / 短波長紫外線光源 / 薄膜試料 / 逆二重励起光音響分光法 / エネルギー密度分布 / 高感度化 / 標準試料 / 八面体形状アナタース酸化チタン / くりかえし再現性 / 一致度 / 試料充填法 / 換算係数 / 測定エネルギー範囲拡大 / 高忠実化 / エネルギー分布解析 / 金属酸化物
Outline of Final Research Achievements

The basic principle of reversed double-beam photoacoustic spectroscopy (RDB-PAS), enabling the measurement of energy-resolved distribution of vacant electronic states, electron traps, in the most of semiconducting metal oxides and carbon nitride, was clarified to extend the application of this method. Based on the measurement principle of RDB-PAS, the instrumental setup and measurement were improved and modified to obtain the results of conditions high-fidelity. The measurements were made on the wide range of samples to establish the quantitative measurements identicalness, similarity and differentness of sample pairs without using conventional analytical techniques and to characterize amorphous (non crystalline) and structures of solid samples, which have not been analyzed by the conventional techniques.

Academic Significance and Societal Importance of the Research Achievements

従来,分子状の有機化合物にのみ要求されてきた「同定」という概念が,逆二重励起光音響分光法による測定結果をつかって無機固体物質にも適用できることをしめした.これは,従来の分析手法では不可能な,アモルファス(非晶質)と表面構造を巨視的(マクロスコピック)かつ定量的に評価できたことにもとづく.本手法で「ほぼ同一」と判定された試料は,あらゆる物性,特性あるいは反応性がほぼおなじであることから,同定の妥当性がしめされた.また,無機固体物質にはなかった「純度」についても同様に定量できることをしめした.さらに,異種粒子間の相互作用が測定結果にあたえる影響を利用して,粒子の混合の均一性の評価も可能である.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (47 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (11 results) Journal Article (21 results) (of which Int'l Joint Research: 16 results,  Peer Reviewed: 21 results,  Open Access: 5 results) Presentation (14 results) (of which Int'l Joint Research: 12 results,  Invited: 13 results) Book (1 results)

  • [Int'l Joint Research] The Pennsylvania State University(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Northeast Normal University(中国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Universitas Jember(インドネシア)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] VISTEC(タイ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Jagiellonian University(ポーランド)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Khon Kaen University(タイ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Manchester Metropolitan University(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 南ポメラニア工科大学/ヤゲウォ大学/グダンスク工科大学(ポーランド)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] ミラノ大学/トリノ大学(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] マエジョ大学(タイ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] マレーシア工科大学(マレーシア)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Do Particles Interact Electronically-Proof of Interparticle Charge-transfer Excitation between Adjoined Anatase and Rutile Particles2021

    • Author(s)
      Shen Yang、Nitta Akio、Takashima Mai、Ohtani Bunsho
    • Journal Title

      Chemistry Letters

      Volume: 50 Issue: 1 Pages: 80-83

    • DOI

      10.1246/cl.200636

    • NAID

      130007965990

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cubic Cu2O nanoparticles decorated on TiO2 nanofiber heterostructure as an excellent synergistic photocatalyst for H2 production and sulfamethoxazole degradation2021

    • Author(s)
      Sekar Karthikeyan、Chuaicham Chitiphon、Vellaichamy Balakumar、Li Wei、Zhuang Wei、Lu Xiaohua、Ohtani Bunsho、Sasaki Keiko
    • Journal Title

      Applied Catalysis B: Environmental

      Volume: 294 Pages: 120221-120221

    • DOI

      10.1016/j.apcatb.2021.120221

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Combined Spectroscopic Methods of Determination of Density of Electronic States: Comparative Analysis of Diffuse Reflectance Spectroelectrochemistry and Reversed Double-Beam Photoacoustic Spectroscopy2021

    • Author(s)
      Kobielusz Marcin、Nitta Akio、Macyk Wojciech、Ohtani Bunsho
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Issue: 11 Pages: 3019-3025

    • DOI

      10.1021/acs.jpclett.1c00262

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The role of the shell in core-shell-structured La-doped NaTaO3 photocatalysts2021

    • Author(s)
      Sudrajat Hanggara、Kitta Mitsunori、Ito Ryota、Yoshida Tomoko、Katoh Ryuzi、Ohtani Bunsho、Ichikuni Nobuyuki、Onishi Hiroshi
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 23 Issue: 14 Pages: 8868-8879

    • DOI

      10.1039/d1cp00375e

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Direct Amorphous-structure Analysis: How are Surface/Bulk Structure and Activity of Titania Photocatalyst Particles Changed by Milling?2021

    • Author(s)
      Chen Guangyi、Takashima Mai、Ohtani Bunsho
    • Journal Title

      Chemistry Letters

      Volume: 50 Issue: 4 Pages: 644-648

    • DOI

      10.1246/cl.200825

    • NAID

      130008025781

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A promising Zn-Ti layered double hydroxide/Fe-bearing montmorillonite composite as an efficient photocatalyst for Cr(VI) reduction: Insight into the role of Fe impurity in montmorillonite2021

    • Author(s)
      Chuaicham Chitiphon、Xiong Yihuang、Sekar Karthikeyan、Chen Weinan、Zhang Li、Ohtani Bunsho、Dabo Ismaila、Sasaki Keiko
    • Journal Title

      Applied Surface Science

      Volume: 546 Pages: 148835-148835

    • DOI

      10.1016/j.apsusc.2020.148835

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Energy-resolved distribution of electron traps for O/S-doped carbon nitrides by reversed double-beam photoacoustic spectroscopy and the photocatalytic reduction of Cr(VI)2020

    • Author(s)
      Chuaicham, C.; Karthikeyan, S.; Ohtani, B.; Sasaki, K.
    • Journal Title

      Chem. Commun.

      Volume: 56 Issue: 26 Pages: 3793-3796

    • DOI

      10.1039/c9cc09988c

    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Elucidation of the electron energy structure of TiO2(B) and anatase photocatalysts through analysis of electron trap density2020

    • Author(s)
      Nagakawa Haruki、Ochiai Tsuyoshi、Ma He、Wang Changhua、Zhang Xintong、Shen Yang、Takashima Mai、Ohtani Bunsho、Nagata Morio
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 31 Pages: 18496-18501

    • DOI

      10.1039/d0ra02587a

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Water-Splitting Activity of La-Doped NaTaO3 Photocatalysts Sensitive to Spatial Distribution of Dopants2020

    • Author(s)
      Sudrajat Hanggara、Kitta Mitsunori、Ito Ryota、Nagai Sota、Yoshida Tomoko、Katoh Ryuzi、Ohtani Bunsho、Ichikuni Nobuyuki、Onishi Hiroshi
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 124 Issue: 28 Pages: 15285-15294

    • DOI

      10.1021/acs.jpcc.0c03822

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Enhanced Solar Photothermal Catalysis over Solution Plasma Activated TiO22020

    • Author(s)
      Yu Fei、Wang Changhua、Li Yingying、Ma He、Wang Rui、Liu Yichun、Suzuki Norihiro、Terashima Chiaki、Ohtani Bunsho、Ochiai Tsuyoshi、Fujishima Akira、Zhang Xintong
    • Journal Title

      Advanced Science

      Volume: 7 Issue: 16 Pages: 2000204-2000204

    • DOI

      10.1002/advs.202000204

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Crystallization of well-defined anatase nanoparticles in SBA-15 for the photocatalytic decomposition of acetic acid2020

    • Author(s)
      Vibulyaseak Kasimanat (Guy)、Ohtani Bunsho、Ogawa Makoto
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 54 Pages: 32350-32356

    • DOI

      10.1039/d0ra04528d

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Optically Transparent Colloidal Dispersion of Titania Nanoparticles Storable for Longer than One Year Prepared by Sol/Gel Progressive Hydrolysis/Condensation2020

    • Author(s)
      Sano Keito、Kuttassery Fazalurahman、Shimada Tetsuya、Ishida Tamao、Takagi Shinsuke、Ohtani Bunsho、Yamakata Akira、Honma Tetsuo、Tachibana Hiroshi、Inoue Haruo
    • Journal Title

      ACS Applied Materials & Interfaces

      Volume: 12 Issue: 40 Pages: 44743-44753

    • DOI

      10.1021/acsami.0c12951

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fabrication and characterization of ternary sepiolite/g-C3N4/Pd composites for improvement of photocatalytic degradation of ciprofloxacin under visible light irradiation2020

    • Author(s)
      Chuaicham Chitiphon、Pawar Radheshyam Rama、Karthikeyan Sekar、Ohtani Bunsho、Sasaki Keiko
    • Journal Title

      Journal of Colloid and Interface Science

      Volume: 577 Pages: 397-405

    • DOI

      10.1016/j.jcis.2020.05.064

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Importance of ZnTiO3 phase in ZnTi-mixed metal oxide photocatalysts derived from layered double hydroxide2020

    • Author(s)
      Chuaicham, C.; Karthikeyan, S.; Song, J. T.; Ishihara, T.; Ohtani, B.; Sasaki, K.
    • Journal Title

      ACS Appl. Mater. Interfaces

      Volume: 12 Issue: 8 Pages: 9169-9180

    • DOI

      10.1021/acsami.9b18785

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Characterisation and properties of visible light-active bismuth oxide-titania composite photocatalysts2019

    • Author(s)
      Ratova, M.; Tosheva, L.; Kelly, P. J.; Ohtani, B.
    • Journal Title

      Sust. Mater. Tech.

      Volume: 22 Pages: e00112-e00112

    • DOI

      10.1016/j.susmat.2019.e00112

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Correlation of the Photocatalytic Activities of Cu, Ce and/or Pt-Modified Titania Particles with their Bulk and Surface Structures Studied by Reversed Double Beam Photoacoustic Spectroscopy2019

    • Author(s)
      Unwiset, P.; Chen, G.; Ohtani, B.; Chayakul Chanapattharapol, K.
    • Journal Title

      Catalysts

      Volume: 9 Issue: 12 Pages: 1010-1022

    • DOI

      10.3390/catal9121010

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Identification and characterization of titania photocatalyst powders using their energy-resolved distribution of electron traps as a fingerprint2019

    • Author(s)
      Nitta Akio、Takashima Mai、Takase Mai、Ohtani Bunsho
    • Journal Title

      Catalysis Today

      Volume: 321-322 Pages: 2-8

    • DOI

      10.1016/j.cattod.2017.12.020

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effects of energetics with {001} facet-dominant anatase TiO2 scaffold on electron transport in CH3NH3PbI3 perovskite solar cells2019

    • Author(s)
      Maitani Masato M.、Tateyama Akito、Boix Pablo P.、Han Guifang、Nitta Akio、Ohtani Bunsho、Mathews Nripan、Wada Yuji
    • Journal Title

      Electrochimica Acta

      Volume: 300 Pages: 445-454

    • DOI

      10.1016/j.electacta.2019.01.102

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Influence of TiO2 structure on its photocatalytic activity towards acetaldehyde decomposition2019

    • Author(s)
      Tryba B.、Jafari S.、Sillanp M.、Nitta A.、Ohtani B.、Morawski A.W.
    • Journal Title

      Applied Surface Science

      Volume: 470 Pages: 376-385

    • DOI

      10.1016/j.apsusc.2018.11.137

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reversed double-beam photoacoustic spectroscopy of metal-oxide powders for estimation of their energy-resolved distribution of electron traps and electronic-band structure2018

    • Author(s)
      Nitta Akio、Takashima Mai、Murakami Naoya、Takase Mai、Ohtani Bunsho
    • Journal Title

      Electrochimica Acta

      Volume: 264 Pages: 83-90

    • DOI

      10.1016/j.electacta.2017.12.160

    • NAID

      120006796028

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hydrothermal synthesis and photocatalytic activities of stabilized bismuth vanadate/bismuth tungstate composites2018

    • Author(s)
      Ketwong Pradudnet、Takashima Mai、Nitta Akio、Pookmanee Pusit、Ohtani Bunsho
    • Journal Title

      Journal of Environmental Chemical Engineering

      Volume: 6 Issue: 2 Pages: 2048-2054

    • DOI

      10.1016/j.jece.2018.01.062

    • NAID

      120006820163

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Novel Approach of Efficient-Photocatalyst Design Based on Electron Trap-Distribution Analysis2021

    • Author(s)
      Ohtani, B.
    • Organizer
      2020 Regional Conference of Environmental Engineering (RCENVE 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Attempts for Identification and Detailed Characterization of Metal-oxide Powders2021

    • Author(s)
      Ohtani, B.
    • Organizer
      Hokkaido Indonesian Student Association Webinar: Materials Chemistry for Better Future
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 電子トラップ密度のエネルギー分布解析にもとづく光機能性材料の同定と精密評価2021

    • Author(s)
      大谷文章
    • Organizer
      電気化学会第88回大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Novel Approach of Efficient-Photocatalyst Design Based On Electron Trap-distribution Analysis2020

    • Author(s)
      Ohtani, B.
    • Organizer
      Pacific-Rim Meeting on Electrochemical and Solid State Science (PRiME2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design, Preparation and Detailed Characterization of Photocatalysts Based on Energy-resolved Distribution of Electron Traps2020

    • Author(s)
      Ohtani, B.
    • Organizer
      Symposium on Photocatalyst and Photocatalysis (Symphosis 2020)
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Identification and Characterization of Metal-oxide Materials Using Newly Developed Reversed Double-beam Photoacoustic Spectroscopy2019

    • Author(s)
      Ohtani, B.
    • Organizer
      The 24th Topical Meeting of International Society of Electrochemistry (ISE)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Interfacial charge-transfer excitation at an anatase-rutile junction: A hypothesis2019

    • Author(s)
      Ohtani, B.; Shen, Y.; Nitta, A.; Takashima, M.
    • Organizer
      235th ECS Meeting
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of Heterogeneous Photocatalysis Based on Energy-resolved Distribution of Electron Traps: Novel Approach beyond the Band-Structure Model2019

    • Author(s)
      Ohtani, B.
    • Organizer
      7th International Conference on Semiconductor Photochemistry (SP7)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Identification of photocatalyst material using newly developed reversed double-beam photoacoustic spectroscopy2019

    • Author(s)
      Ohtani, B.
    • Organizer
      Workshop - Photocatalysis-advances in water and environmental remediation
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Design of Heterogeneous Photocatalysis Based on Energy-resolved Distribution of Electron Traps2019

    • Author(s)
      Ohtani, B.
    • Organizer
      The 3rd International Symposium on Recent Progress of Energy and Environmental Photocatalysis (Photocatalysis 3)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Identification and Characterization of Metal-Oxide Powders with Energy-Resolved Density of Electron Traps Measured By Reversed Double-Beam Photoacoustic Spectroscopy2018

    • Author(s)
      Ohtani, B.; Nitta, A.; Takase, M.; Takashima, M.
    • Organizer
      233rd ECS Meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Role of Electron Traps in Photocatalysis: Identification and Characterization of Metal Oxide Particulate Photocatalysts2018

    • Author(s)
      Ohtani, B.
    • Organizer
      CIMTEC 2018: 8th Forum on New Materials
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 「参照ニオビアの総合評価-電子トラップのエネルギー分布解析2018

    • Author(s)
      大谷文章・村上雄馬・長尾昌紀・佐々木未希・村山恭子・高島舞
    • Organizer
      第37回参照触媒討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Identification and Characterization of Metal-oxide Particles with Energy-resolved Distribution of Electron Traps2018

    • Author(s)
      Ohtani, B.; Nitta, A.; Murakami, Y.; Takase, M.; Takashima, M.
    • Organizer
      EMN Meeting on Titanium-Oxides
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] 光触媒が一番わかる2019

    • Author(s)
      高島舞・大谷文章
    • Total Pages
      175
    • Publisher
      技術評論社
    • ISBN
      9784297106171
    • Related Report
      2019 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi