Growth Processes for Nanometer-Scale Au-Particles in Water-in Oil Microemulsions
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概要
- 論文の詳細を見る
Growth processes of gold particles prepared with the aid of microemulsions are studied focussing on the relationship between the produced particles and the structure of the microemulsion. The microemulsion was composed of sodium dioleylphosphate (SDOLP) or pentaethylene-glycol dodecylether (C12E5). It is found from the size and distribution of the produced particles that there are several retardation processes for Au-particle growth in the SDOLP system. The first retardation appears near the diameter dm of the original microemulsion droplets, followed by successive retardation in lower ranges of water-to-surfactant ratio Wo. The second retardation occurs around the diameter dnc of the natural curvature of the microemulsion droplets. Whereas, for larger Wo-values, the first and the second retardations occur around dnc and a diameter dms much larger than dnc. The size distribution of the produced particles is rather broad due to the wide gaps between dm, dnc and dms. In the C12E5-system, the size distribution was much broader than that in the SDOLP-system. This arises from the absence of the second retardation which restrains the particle growth of the maximum size. SDOLP can work as a stabilizer of the produced particles. This is caused by the peculiar nature of the microemulsion composed of SDOLP. Taking into account the above retardation mechanism, the size-distribution of Au-particles can be controlled, and Au-particles with sharper size-distribution can be prepared.
- 社団法人 化学工学会の論文
著者
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塩井 章久
同志社大学工学部
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塩井 章久
Department Of Chemistry And Chemical Engineering Yamagata University
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HARADA Makoto
Institute of Advanced Energy, Kyoto University
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SATO Yasuo
Institute of Advanced Energy, Kyoto University
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NONAKA Gen
Proctor & Gamble Far East Inc.
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SUZUKI Kiyoshi
Department of Materials Science, Fukui University
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ADACHI Motonari
Institute of Advanced Energy, Kyoto University
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KISHIDA Masahiro
Department of Chemical Engineering, Kyushu University
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SHIOI Akihisa
Institute of Advanced Energy, Kyoto University
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HARADA Toshio
Institute of Advanced Energy, Kyoto University
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原田 誠
Department Of Chemical Engineering And Materials Science Doshisha University
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篠本 滋
京都大学理学研究科
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篠本 滋
京大 大学院
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Nonaka Gen
Usaien Pharmaceutical Co. Ltd.
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Nonaka Gen
Procter And Gamble Far East Inc.
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水越 允治
皇學館大学
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Adachi Motonari
Institute Of Advanced Energy Kyoto University
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SHINOMOTO Shigeru
Department of Physics, Kyoto University
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Kishida Masahiro
Department Of Chemical Engineering Graduate School Of Engineering Kyushu University
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Kishida Masahiro
Department Of Chemical Engineering Kyushu University
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Harada Toshio
Institute Of Advanced Energy Kyoto University
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Suzuki Kiyoshi
Department Of Community Medical Service Ryukyu University Hospital
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Suzuki Kiyoshi
Department Of Materials Science Fukui University
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Harada Makoto
Institute Of Advanced Energy Kyoto University
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Sato Yasuo
Institute Of Advanced Energy Kyoto University
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