| Project/Area Number |
13650845
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
触媒・化学プロセス
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
YAMASHITA Hiromi Osaka Prefecture University, Department of Applied Chemistry, 工学研究科, 助教授 (40200688)
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| Co-Investigator(Kenkyū-buntansha) |
ZHANPEISOV Nurbosyn Osaka Prefecture University, Department of Applied Chemistry, 工学研究科, 助手 (10326275)
MATSUOKA Masaya Osaka Prefecture University, Department of Applied Chemistry, 工学研究科, 助手 (80305648)
ANPO Masakazu Osaka Prefecture University, Department of Applied Chemistry, 工学研究科, 教授 (70094498)
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| Project Period (FY) |
2001 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2002: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2001: ¥1,800,000 (Direct Cost: ¥1,800,000)
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| Keywords | Photocalyst / Titanium oxide / Degradation / Ion beam / Purification / Thin film / Ion implantation / Visible light |
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| Research Abstract |
The metal ion-implantation of titanium dioxide (TiO_2) with metal ions (V^+, Mn^+, Fe^+) at high energy acceleration and the subsequent calcination of these metal ion-implanted Ti_2 in oxygen at around 725 K resulted in a definite shift in the absorption spectra toward visible light regions. These catalysts exhibited photocatalytic reactivity for degradation of 2-propanol diluted in water under visible light irradiation (l> 450 nm). XAFS studies have revealed that the implanted metal ions are located at the lattice positions of Ti^<4+> in TiO_2 after the calcination. These spectroscopic studies show that the substitution of Ti ions in TiO_2 lattice with implanted metal ions is important to modify TiO_2 to be able to adsorb visible light and operate as photocatalysts under visible light irradiation.
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