Development of Heteroelement-doped Titanium Oxide Photocatalysts and Monitoring of Electronic Levels and Active Structure

• Project/Area Number: 19550134
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Functional materials chemistry
• Research Institution: Chiba University
• Principal Investigator: YASUO Izumi Chiba University, 大学院・理学研究科, 准教授 (50251666)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2007: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 光触媒 / 酸化チタン / 可視光励起 / ドープ元素 / X線吸収微細構造 / 環境調和化学 / 状態選別 / メソ細孔体 / 可視光 / チタン酸化物 / ヘテロ元素 / 構造解析 / バナジウム / 硫黄 / 不純物準位

Research Abstract

酸化チタン(TiO_2)は紫外光照射により触媒作用を示すが、自然エネルギーとしての太陽光を活用するためには可視光照射で働くことが必要である。本研究では、3ナノメートルの均一細孔をもつTiO_2、TiO_2ナノチューブ、結晶性TiO_2にそれぞれ硫黄ドープすると可視光下エタノール酸化が促進されることを見出し、硫黄がアニオンとして含まれることを実証した。可視光により不純物硫黄準位からTiO_2伝導帯に電子励起されたため、より負側電位の反応が進むはずである。実際、難反応であるCO_2還元反応でメタノールを生成することを示した。

Research Products

• [Journal Article] Site Structure and Photocatalytic Role of Sulfur or Nitrogen-Doped Titanium Oxide with Uniform Mesopores under Visible Light (2009)
  • Author(s): Yasuo Izumi, Takaomi Itoi, Shuge Peng, Kazuki Oka, and Yoshiyuki Shibata
  • Journal Title: Journal of Physical Chemistry C 113(16) Pages: 6706-6718
  • Peer Reviewed
• [Journal Article] Effective removal of low concentrations of arsenic and lead and the monitoring of molecular removal mechanism at surface (2009)
  • Author(s): Yasuo Izumi
  • Journal Title: Environmental Research Journal 3(2/3) Pages: 205-217
• [Journal Article] Site Structure and Photocatalytic Role of Sulfur or Nitrogen-Doped Titanium Oxide with Uniform Mesopores under Visible Light (2009)
  • Author(s): Yasuo Izumi, Takaomi Itoi, Shung Peng, Kazuki Oka, Yoshiyuki Shibata
  • Journal Title: Journal of Physical Chemistry C (印刷中)
  • Peer Reviewed
• [Journal Article] Effective removal of low concentrations of arsenic and lead and the monitoring of molecular removal mechanism at surface (2009)
  • Author(s): Yasuo Izumi
  • Journal Title: Environmental Research Journal 3 Pages: 205-217
• [Journal Article] Specific Oxidative Dehydrogenation Reaction Mechanism over Vanadium(IV/III)Sites in TiO_2 with Uniform Mesopores under Visible Light (2008)
  • Author(s): Yasuo Izumi, Kazushi Konishi, and Hideaki Yoshitake
  • Journal Title: Bulletin of Chemical Society of Japan 81(10) Pages: 1241-1249
  • NAID: 10024330802
  • Peer Reviewed
• [Journal Article] Photo-oxidation over mesoporous V-TiO_2 catalyst under visible light monitored by vanadium Kβ5,2-selecting XANES spectroscopy (2008)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Tomohisa Miyajima, and Hideaki Yoshitake,
  • Journal Title: Materials Letters 62(6/7) Pages: 861-864
  • Peer Reviewed
• [Journal Article] State-sensitive monitoring of gold nanoparticle sites on titania and the interaction of the positive Au site with O_2 by Au Lα1-selecting X-ray absorption fine structure (2008)
  • Author(s): Yasuo Izumi, Diaa Mosbah Obaid, Kazushi Konishi, Dilshad Masih, Masafumi Takagaki, Yasuko Terada, Hajime Tanida, and Tomoya Uruga
  • Journal Title: Inorganica Chimica Acta 361(4) Pages: 1149-1156
  • Peer Reviewed
• [Journal Article] ナノ粒子構造解析技術の開発 (2008)
  • Author(s): 泉康雄
  • Journal Title: ポリファイル 45(528) Pages: 46-49
  • Peer Reviewed
• [Journal Article] On-reaction, state-selective vanadium Kb_(5, 2)-selecting XAFS elucidated oxidativedehydrogenation reaction mechanism undervisible light (2008)
  • Author(s): Yasuo Izumi, Kazushi Konishi, and Hideaki Yoshitake
  • Journal Title: Photon Factory Activity Report 2007 25B Pages: 15-15
  • Peer Reviewed
• [Journal Article] Can the photo-catalytic reactivity of semiconductor TiO_2 be predicted based on local site information of Ti K-edge X-ray absorption (2008)
  • Author(s): Yasuo Izumi
  • Journal Title: Photon Factory Activity Report 2007 25B Pages: 41-41
  • Peer Reviewed
• [Journal Article] Photo-oxidation over mesoporous V-TiO_2 catalyst under visible light monitored by vanadium Kβ_<5.2>-selecting XANES spectroscopy (2008)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Tomohisa Miyajima, Hideaki Yoshitake
  • Journal Title: Materials Letters 62 Pages: 861-864
  • Peer Reviewed
• [Journal Article] Specific Oxidative Dehydrogenation Reaction Mechanism over Vanadium(IV/III) Sites in TiO_2 with Uniform Mesopores under Visible Light (2008)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Hideaki Yoshitake
  • Journal Title: Bulletin of Chemical Society of Japan 81 Pages: 1241-1249
  • NAID: 10024330802
  • Peer Reviewed
• [Journal Article] State-sensitive monitoring of gold nanoparticle sites on titania and the interaction of the positive Au site with O_2 by Au Lα_1-selecting X-ray absorption fine structure (2008)
  • Author(s): Yasuo Izumi, Diaa Mosbah Obaid, Kazushi Konishi, Dilshad Masih, Masafumi Takagaki, Yasuko Terada, Hajime Tanida, Tomoya Uruga
  • Journal Title: Inorganica Chimica Acta 361 Pages: 1149-1156
  • Peer Reviewed
• [Journal Article] ナノ粒子構造解析技術の開発 (2008)
  • Author(s): 泉康雄
  • Journal Title: ポリファイル 45 Pages: 46-49
• [Journal Article] Photo-oxidation over mesoporous V-TiO_2catalyst under visble light monitored by vanadium Kβ_5.2-selecting XANES spectroscopy (2008)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Tomohisa Miyajima, Hideaki Yoshitake
  • Journal Title: Materials Letters 62(6/7) Pages: 861-864
  • Peer Reviewed
• [Journal Article] X-ray Absorption Fine Structure Combined with X-ray Fluorescence Spectroscopy.Monitoring of Vanadium Site in MesoporousTitania Excited under Visible Light by Selective Detection of the Vanadium Kβ_<5,2> Fluorescence (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Diaa Mosbah Obaid, Tomohisa Miyajima, Hideaki Yoshitake
  • Journal Title: Analytical Chemistry 79(18) Pages: 6933-6940
  • Peer Reviewed
• [Journal Article] Selective Butanol Synthesis over Rhodium-Molybdenum Catalysts Supported in Ordered Mesoporous Silica (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Masayasu Tsukahara, Diaa Mosbah Obaid, and Ken-ichi Aika
  • Journal Title: Journal of Physical Chemistry C 111(27) Pages: 10073-10081
  • Peer Reviewed
• [Journal Article] State-sensitive Monitoring of Active andPromoter Sites. Applications to Au/titania and Pt-Sn/silica Catalysts by XAFS Combined with X-ray Fluorescence Spectrometry (2007)
  • Author(s): Yasuo Izumi, Dishad Masih, Jean-Pierre Candy, Hideaki Yoshitake, Yasuko Terada, Hajime Tanida, and Tomoya Uruga
  • Journal Title: X-Ray Absorption Fine Structure 13th International Conference Vol.882 Pages: 588-590
  • Peer Reviewed
• [Journal Article] X-ray Absorption Fine Structure Combined with X-ray Fluorescence Spectrometry. Part 18. Tin Site Structure of Pt-Sn Catalyst (2007)
  • Author(s): Yasuo Izumi, Dilshad Masih, Eric Roisin, Jean-Pierre Candy, Hajime Tanida, and Tomoya Uruga
  • Journal Title: Materials Letters 61(18) Pages: 3833-3836
  • Peer Reviewed
• [Journal Article] Photo-oxidation of Ethanol on Mesoporous Vanadium-Titanium Oxide Catalysts and the Relation to Vanadium(IV)and(V)Sites (2007)
  • Author(s): Dilshad Masih, Hideaki Yoshitake, and Yasuo Izumi
  • Journal Title: Applied Catalysis A 325(2) Pages: 276-282
  • Peer Reviewed
• [Journal Article] Optimization of an Iron Intercalated Montmorillonite Preparation for the Removal of Arsenic at Low Concentrations (2007)
  • Author(s): Dilshad Masih, Yasuo Izumi, Ken-ichi Aika, and Yoshimi Seida
  • Journal Title: Engineering in Life Sciences 7(1) Pages: 52-60
  • Peer Reviewed
• [Journal Article] State-sensitive monitoring of vanadium catalyst sites excited under visible light by V Kβ_(5, 2)-selecting XAFS (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Tomohisa Miyajima, and Hideaki Yoshitake
  • Journal Title: PhotonFactory Activity Report 2006 24B Pages: 25-25
  • Peer Reviewed
• [Journal Article] Feasibility of vanadium Kβ_(5, 2)-selecting XAFS for the application to vanadium catalysts excited under visible light (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Tomohisa Miyajima, and Hideaki Yoshitake
  • Journal Title: Photon Factory Activity Report 2006 24B Pages: 20-20
  • Peer Reviewed
• [Journal Article] Photo-oxidation of Ethanol on Mesoporous Vanadium-Titanium Oxide Catalsts and the Relation to Vanadium(IV)and (V)Sites (2007)
  • Author(s): Dilshad Masih, Hideaki Ybshitake, Yasuo Izumi
  • Journal Title: Applied Cataiysis A 325(2) Pages: 276-282
  • Peer Reviewed
• [Journal Article] X-ray Absorption Fine Structure Combined with X-ray Fluorescence Spectroscopy.Monitoring of Vanadium Site in Mesoporous Titania Eixcied under Visible Light by Selective Detectbn of the Vanadlum Kβ_5.2 Fluorescence (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Dlaa Mosbah Obaid, Tomohisa Miyajima, Hideaki Yoshitake
  • Journal Title: Analytical Chemistty 79(18) Pages: 6933-6940
  • Peer Reviewed
• [Journal Article] Feasibility of vanadium Kβ_5.2-selecting XAFS for the application to vanadium catalsts excited under visible light (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Tomohisa Miyajima, Hideaki Yoshitake
  • Journal Title: Photon Factory Activity Repor 2006 24B Pages: 20-20
  • Peer Reviewed
• [Journal Article] State-sensitive monitorlng of vanadium catalyst sites exclted under visiblelight by Kβ_5.2-selectin XAFS (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Tomohisa Miyajima, Hideaki Yoshitake
  • Journal Title: Photon Faotory Aotivity Report 2006 24B Pages: 25-25
  • Peer Reviewed
• [Presentation] 可視光下メソ酸化チタンの酸素還元反応を促進する硫黄ドープ法とそのサイト構造・作用機構 (2009)
  • Author(s): 柴田慶之、泉康雄
  • Organizer: 日本化学会第89春季年会
  • Place of Presentation: 船橋(2M2-51)
  • Year and Date: 2009-03-28
• [Presentation] 可視光下メソ酸化チタンの酸素還元反応を促進する硫黄ドープ法とそのサイト構造・作用機構 (2009)
  • Author(s): 柴田慶之, 泉康雄
  • Organizer: 日本化学会第89回春季年会
  • Place of Presentation: 船橋
  • Year and Date: 2009-03-28
• [Presentation] 高エネルギー分解能蛍光分光により状態選別したXAFS測定 (2009)
  • Author(s): 泉康雄
  • Organizer: PF研究会蛍光XAFS研究の現状と進展
  • Place of Presentation: つくば
  • Year and Date: 2009-03-11
• [Presentation] チタンK吸収端XAFSを用いてヘテロドープTiO_2の可視光励起触媒反応性を占えるか? (2008)
  • Author(s): 泉康雄、彭淑鴿、柴田慶之
  • Organizer: 第11回XAFS討論会
  • Place of Presentation: 姫路
  • Year and Date: 2008-08-07
• [Presentation] Development and monitoring of mesoporous titania doped with -vanadium or anions for selective ethanol oxidation under visible light (2008)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Dilshad Masih, Hideaki Yoshitake
  • Organizer: 14th International Congress on Catalysis, Seoul
  • Year and Date: 2008-07-15
• [Presentation] 可視光励起エタノール脱水バナジウム触媒各反応条件でのその場分光観測と触媒作用機構 (2008)
  • Author(s): 小西和司・泉康雄・吉武英昭
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 東京
  • Year and Date: 2008-03-27
• [Presentation] 可視光励起工タノール脱水バナジウム触媒各反応条件でのその場分光観測と触媒作用機構 (2008)
  • Author(s): 小西 和司, 泉 康雄, 吉武 英昭
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 東京
  • Year and Date: 2008-03-27
• [Presentation] ナノ環境触媒-構造と機能の魅力 (2008)
  • Author(s): 泉康雄
  • Organizer: 日本化学会関東支部千葉地区主催講演会
  • Place of Presentation: 千葉
  • Year and Date: 2008-02-29
• [Presentation] 可視光励起メソポーラスV-TiO_2触媒を用いたエタノールの光酸化反応機構とその触媒再生の検討 (2007)
  • Author(s): 小西和司・泉康雄・吉武英昭
  • Organizer: 日本化学会第1回関東支部大会
  • Place of Presentation: 東京
  • Year and Date: 2007-09-27
• [Presentation] 可視光励起メソポーラスV-Tio2触媒を用いた工タノールの光酸化反応機構とその触媒再生の検討 (2007)
  • Author(s): 小西 和司, 泉 康雄, 吉武 英昭
  • Organizer: 日本化学会第1回関東支部大会
  • Place of Presentation: 東京
  • Year and Date: 2007-09-27
• [Presentation] メソポーラスV-TiO_2光触媒の開発とその場選択分光観測 (2007)
  • Author(s): 泉康雄, 小西和司, 吉武英昭
  • Organizer: 第100回触媒討論会
  • Place of Presentation: 札幌(49(6))
  • Year and Date: 2007-09-17
• [Presentation] メソポーラスv-TiO2光触媒の開発とその場選択分光観測 (2007)
  • Author(s): 泉 康雄, 小西 和司, 吉武 英昭
  • Organizer: 第100回触媒討論会
  • Place of Presentation: 札幌
  • Year and Date: 2007-09-17
• [Presentation] Development and Monitoring of Mesoporous Vanadium Catalysts under Visible Light (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Dilshad Masih, Hideaki Yoshitake, Development
  • Organizer: 3rd International Conference on Environmental Science and Technology, The American Academy of Sciences
  • Place of Presentation: Houston, Texas
  • Year and Date: 2007-08-07
• [Presentation] Development and Monitoring of Mesoporous Vanadium Catalystsunder Vlsible Light (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Dilshad Masih, Hideaki Yoshitake
  • Organizer: 3rd International Conference on Environmental Science and Technology
  • Place of Presentation: ヒューストン、米国
  • Year and Date: 2007-08-07
• [Presentation] Selective Spectroscopy to Correlate Local Nano-structure with Nano-catalysis (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Dilshad Masih, Hideaki Yoshitake Tomoya Uruga
  • Organizer: NanoSMat(International Conference on Surfaces, Coatings and Nanostructured Materials)
  • Place of Presentation: Alvor, Portugal
  • Year and Date: 2007-07-11
• [Presentation] Selective Spectroscopy to Correlate Local Nano-structure with Nano-catalysis (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Dilshad Masih, Hideaki Yoshitake, Tromoya Uruga
  • Organizer: International Confererce on Surfaces, Coatings, and Nanostructured Materials
  • Place of Presentation: アルガルヴェ、ポルトガル
  • Year and Date: 2007-07-11
• [Book] SPring-8 Research Frontiers 2007 (2008)
  • Author(s): Yasuo Izumi
  • Publisher: Why Gold Becomes Active When in Form of Dispersed 3 nm Particles? Reaction Intermediate Detected at Spring-8
• [Book] Proceedings of 3rd International Conference on Environmental International Conference on Environmental Science and Technology Science and Technology (2007)
  • Author(s): Yasuo Izumi, Kazushi Konishi, Dilshad Masih, Hideaki Yoshitake
  • Publisher: Development and Monitoring of Mesoporous Vanadium Catalysts under Visible Light
• [Remarks]
  • URL: http://www2.odn.ne.jp/yizumi/Papers/2009JPC.html
• [Remarks]
  • URL: http://www2.odn.ne.jp/yizumi/Pages/Topics.html