2012 Fiscal Year Final Research Report
Study of formation process of metal nanoparticles in solution and on metal oxides by in-situ spectroscopy
| Project/Area Number |
22360338
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Catalyst/Resource chemical process
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SHISHIDO Tetsuya 京都大学, 大学院・工学研究科, 准教授 (80294536)
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| Co-Investigator(Renkei-kenkyūsha) |
TERAMURA Kentaro 京都大学, 大学院・工学研究科, 講師 (80401131)
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| Project Period (FY) |
2010 – 2012
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| Keywords | ナノ粒子 / その場観察 / XAFS / 時間分解測定 |
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| Research Abstract |
The formation processes of metal nanoparticles in solution and on metal oxide were investigated by various characterization techniques, especially, in situ time-resolved XAFS (QXAFS and DXAFS) combined with Q-Mass spectroscopy. A series of XAFS spectra was analyzed to evaluate the change in local structure, electronic state, and dispersion of metal nanoparticles during their formation and growth process. We studied and developed several useful synthesis methods of metal nanoparticles.
1) wet chemical synthesis of gold nanoparticles using fast reduction
2) wet chemical synthesis of rhodium nanoparticles to control their morphology
3) photodeposition of metal nanoparticles on TiO_2
4) formation process of platinum and platinum -tin alloy nanoparticles on metal oxides by direct reduction without calcination. The X-ray absorption fine structure (XAFS) study revealed their unique formation mechanisms different from the conventional mechanisms.
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[Journal Article] In Situ Quick XAFS Study on the Formation Mechanism of Small Gold Nanoparticles Supported by Porphyrin-cored Tetradentate Passivants2011
Author(s)
Ohyama, Junya; Teramura, Kentaro; Higuchi, Yasuhiro; Shishido, Tetsuya; Hitomi, Yutaka; Aoki, K; Funabiki, Takuzo, Kodera, M; Kato, Kazuo; Tanida, Hajime; Uruga, Tomoya; Tanaka, Tsunehiro
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Journal Title
Physical Chemistry Chemical Physics
Volume: 13
Pages: 11128-11135
Peer Reviewed
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