2016 Fiscal Year Final Research Report
Synthesis of visible light responsive metal-ion-doped TiO2 photocatalyst
| Project/Area Number |
26410242
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Yamaguchi University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 可視光応答型光触媒 / 金属イオンドープ / 環境浄化技術 / 有機塩素化合物 |
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| Outline of Final Research Achievements |
Titanium dioxide modified with Pt(IV), Cr(III) or Cu(II) ion was prepared under various conditions by using sol-gel method and the photocatalytic activity was evaluated for the degradation of 4-chlorophenol in water under visible light irradiation. For comparison, Cu or Cr-grafted TiO2 was also synthesized by a simple impregnation method. In the case of Cu(II) ion, the impregnation method is more advantageous than the sol-gel method. The photocatalytic activity of Cu-grafted TiO2 decreases linearly as the number-density of Cu(II) increases on the TiO2 surface. On the other hand, Pt and Cr ions can be doped in TiO2 by the sol-gel method and their photocatalytic activities are much higher than Cu- or Cr-grafted TiO2. We have clarified that the presence of Pt or Cr ion with different valence states in TiO2 increases the photocatalytic activity.
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| Free Research Field |
光化学
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