Preparation of new visible-light sensitive photocatalyst activated with different hole-electron charge separations

• Project/Area Number: 21510082
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Environmental technology/Environmental materials
• Research Institution: University of Toyama
• Principal Investigator: TAKAHASHI Takakazu 富山大学, 大学院・理工学研究部, 准教授 (80019223)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 光触媒 / 二層膜 / 可視光 / スパッタ / 電荷分離

Research Abstract

We prepared new visible-light sensitive photocatalytic cells composed of both TiO_2/WO_3 and Pt nano-particles/WO_3 films. The cells were activated two different hole-electron charge separations. In this study, we also prepared another cell usedα-Fe_2O_3 instead of WO_3 because Fe is very cheap and lies under the ground in large quantities. Theα-Fe_2O_3 type cells is little inferior to the WO_3 type ones in the rate of the methanol decomposition. This is mainly due to the different decomposition mechanism because the intermediate products are different at both cases.

Research Products

• [Journal Article] Bubble-like CdSe nanoclusters sensitized TiO_2 nanotube arrays for improvement in solar cell (2011)
  • Author(s): M. F. Hossain, S. Biswas, Z. H. Zhang, T. Takahashi
  • Journal Title: Journal of Photochemistry and Photobiology A : Chemistry Volume: Vol.217 Pages: 68-75
  • Peer Reviewed
• [Journal Article] The effect of substrate temperature on the spray-deposited TiO_2 nanostructured films for dye-sensitized solar cells (2011)
  • Author(s): M. F. Hossain, T. Takahashi
  • Journal Title: Journal of Nanoscience and Nanotechnology Volume: Vol.11 Pages: 3222-3228
  • Peer Reviewed
• [Journal Article] The effect of substrate on the spray-deposited TiO_2 nanostructured films for dye-sensitized cells (2011)
  • Author(s): M.F.Hossain, T.Takahashi
  • Journal Title: Journal ofNanoscience and Nanotechnology Volume: Vol.11 Issue: 4 Pages: 3222-3228
  • DOI: 10.1166/jnn.2011.3596
  • Peer Reviewed
• [Journal Article] Microstructured ZnO photoelectrode grown on the sputter-deposited ZnO passivating-layer for improving the photovoltaic performances (2010)
  • Author(s): M. F. Hossain, T. Takahashi
  • Journal Title: Materials Chemistry and Physics Volume: Vol.124 Pages: 940-945
  • Peer Reviewed
• [Journal Article] Synthesis of thick TiO_2 nanotube arrays on transparent substrate (2010)
  • Author(s): S. Biswas, M. Shahjahan, M. F. Faruk and T. Takahashi
  • Journal Title: Elecctrochemistry Communications Volume: Vol.12 Pages: 668-671
  • Peer Reviewed
• [Journal Article] Fabrication of shape-controlledα-Fe_2O_3 nanostructures by sonoelectrochemical anodization for visible light photocatalytic application (2010)
  • Author(s): Z. H. Zhang, M. F. Hossain and T. Takahashi
  • Journal Title: Materials Letters Volume: Vol.64 Pages: 435-438
  • Peer Reviewed
• [Journal Article] Facing targets sputtering deposition of ZnO films with Pt ultra-thin layers for gas phase photocatalytic application (2010)
  • Author(s): Zhonghai Zhang, Md. Faruk Hossain, Takakazu Takahashi
  • Journal Title: Journal of Hazardous Materials Volume: Vol.176 Pages: 973-978
  • Peer Reviewed
• [Journal Article] Self-assembled hematite(α-Fe_2O_3) nanotube arrays for photoelectrocatalytic degradation of azo dye under simulated solar light irradiation (2010)
  • Author(s): Z. H. Zhang, M. F. Hossain, T. Takahashi
  • Journal Title: Applied Catalysis B : Environmental Volume: Vol.95 Pages: 423-429
  • Peer Reviewed
• [Journal Article] Photoelectrochemical water splitting on highly smooth and ordered TiO_2 nanotube arrays for hydrogen generation (2010)
  • Author(s): Z. H. Zhang, M. F. Hossain, T. Takahashi
  • Journal Title: International Journal of Hydrogen Energy Volume: Vol.35 Pages: 8528-8535
  • Peer Reviewed
• [Journal Article] Gas phase photocatalytic activity of ultrathin Pt layer coated onα-Fe_2O_3 films under visible light illumination (2010)
  • Author(s): Z. H. Zhang, M. F. Hossain, Takayuki Miyazaki, T. Takahashi
  • Journal Title: Environmental Science and Technology Volume: Vol.44 Pages: 4741-4746
  • Peer Reviewed
• [Journal Article] Facing-tatgets sputtering deposition of ZnO films with Pt ultra-thin layers for gas-phase photocatalytic application (2010)
  • Author(s): Z.H.Zhang, M.F.Hossain, T.Takahashi
  • Journal Title: Journal of Hazardous Materials Volume: Vol.176 Pages: 973-978
  • Peer Reviewed
• [Journal Article] Self-assembled hematite (α-Fe_2O_3) nanotube arrays for photoelectrocatalytic degradation of azo dye under simulated solar light irradiation (2010)
  • Author(s): Z.H.Zhang, M.F.Hossain, T.Takahashi
  • Journal Title: Applied Catalysis B : Environmental Volume: Vol.95 Pages: 423-429
  • Peer Reviewed
• [Journal Article] Investigation of photocatalytic activity of TiO_2/WO_3 bilayered thin films with various amounts of WO_3 exposed surface (2009)
  • Author(s): S. Biswas, M. F. Hossain, M. Shahjahan, K. Takahashi, T. Takahashi, A. Fujishima
  • Journal Title: J. Vac. Sci. Technol. A Volume: Vol.27 Pages: 880-884
  • Peer Reviewed
• [Journal Article] Structural, optical and photocatalytic properties of ZnO : Al nano-wall structure deposited on glass substrate by spray pyrolysis (2009)
  • Author(s): M. Shahjahan, K. R. Khan, M. F. Hossain, S. Biswas, T. Takahashi
  • Journal Title: J. Vac. Sci. Technol. A Volume: Vol.27 Pages: 885-888
  • Peer Reviewed
• [Journal Article] Investigation of photocatalytic activity of TiO_2/WO_3 bilayered thin films with various amounts of WO_3 exposed surface (2009)
  • Author(s): S.Biswas, M.F.Hossain, M.Shahjahan, K.Takahashi, T.Takahashi, A.Fujishima
  • Journal Title: J.Vac.Sci.Technol.A Vol.27 Pages: 880-884
  • Peer Reviewed
• [Journal Article] Structural, optical and photocatalytic properties of ZnO:Al nano-wall structure deposited on glass substrate by spray pyrolysis (2009)
  • Author(s): M.Shahjahan, K.R.Khan, M.F.Hossain, S.Biswas, T.Takahashi
  • Journal Title: J.Vac.Sci.Technol.A Vol.27 Pages: 885-888
  • Peer Reviewed
• [Journal Article] Nanorods and nanolipsticks structured ZnO photoelectrode for dye-sensitized solar cells (2009)
  • Author(s): M.F.Hossain, T.Takahashi, S.Biswas
  • Journal Title: Electrochemistry Communications Vol.11 Pages: 1756-1759
  • Peer Reviewed
• [Presentation] Coating effect of platinum ultra-thin layer on iron oxide films for visible light photocatalyst (2009)
  • Author(s): T.Takahashi, T.Miyazaki
  • Organizer: the E-MRS 2009 Spring Meeting
  • Place of Presentation: Strasbourg (France)
  • Year and Date: 2009-06-08
• [Presentation] Coating effect of platinum ultra-thin layer on iron oxide films for visible light photocatalyst (2009)
  • Author(s): T. Takahashi, T. Miyazaki
  • Organizer: The E-MRS 2009 Spring Meeting
  • Place of Presentation: Strasbourg(France)
• [Presentation] Photocatalytic activity of the sputter-deposited ZnO films with Pt ultra-thin layers (2009)
  • Author(s): T. Takahashi, T. Arakawa
  • Organizer: The E-MRS 2009 Spring Meeting
  • Place of Presentation: Strasbourg(France)
• [Presentation] Sputter-deposition of iron oxide films with platinum ultra-thin layer for visible light photocatalyst (2009)
  • Author(s): T. Takahashi, T. Miyazaki
  • Organizer: The 10^<th> International Symposium on Sputtering and Plasma Processes
  • Place of Presentation: Kanazawa(Japan)
• [Presentation] Study of photocatalytic activity in the ZnO film with Pt ultra-thin layer prepared by sputtering technique (2009)
  • Author(s): T. Takahashi, T. Arakawa
  • Organizer: The 10^<th> International Symposiumon Sputtering and Plasma Processes
  • Place of Presentation: Kanazawa(Japan)