| Project/Area Number |
22510116
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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 |
Nanomaterials/Nanobioscience
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| Research Institution | Anan National College of Technology |
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Principal Investigator |
YOSHIDA Takehito 阿南工業高等専門学校, 機械工学科, 教授 (20370033)
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| Co-Investigator(Kenkyū-buntansha) |
UMEZU Ikurou 甲南大学, 理工学部, 教授 (30203582)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | ナノ材料創製 / パルスレーザーアブレーション / 酸窒化物半導体 / 可視光応答化 / 光触媒 |
|---|
| Research Abstract |
We have tried nano-downsizing for photocatalyst particles using reactive pulsed laser ablation as a thermally non-equilibrium process, aiming at increase of photocatalytic activities. Wurtzite nanocrystalline GaN was successfully synthesized, even though inert N2 was introduced as a reactive background gas. In TiO2, It was clarified that crystal structures (rutile or anatase) as well as assembly morphologies of TiO2 nanocrystallites, can be controlled by varying process parameters (eg. gas pressure). The relation between the process parameters and the formed crystal structures was explained from the cooling process of the ablated species. Photocatalytic activities of the TiO2 nanocrystallites increased with recovering crystallinities, by rapid thermal annealing.
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