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Synthesis of Ceramic Nanoparticles via Ultrasonic Route
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- Enomoto Naoya
- Department of Applied Chemistry, Kyushu University, Japan
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- Kumagai Akihiro
- Department of Applied Chemistry, Kyushu University, Japan
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- Yamada Kosuke
- Department of Applied Chemistry, Kyushu University, Japan
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- Aso Ryota
- Department of Applied Chemistry, Kyushu University, Japan
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- Hojo Junichi
- Department of Applied Chemistry, Kyushu University, Japan
Description
Several types of ceramic nanoparticles syntheses using power or subtle ultrasound are presented. Magnetite particles were precipitated from Fe(OH)2 alkaline solution. Sonochemical effects on oxidation and dissolution-precipitation are investigated. We found a unique formation of nanoparticles under a cleaner-type sonication. Carbon nanoparticles were prepared from a sonochemical polymerization of benzene-derivatives in the presence of solid particles. At an intensive sonication, graphite nanoparticles were likely to form. While at a moderate and long sonication in the presence of zinc metal particles, it was found that plate-like particles were grown. In the presence of Co and Ni particles, needle-like particles were frequently formed. Subtle irradiation of ultrasound is called soft sonication. Here we pay our attention to the starting solution for preparing nanoparticles; that is, soft sonication was applied before chemical reactions to modify the structure of the starting solutions for the synthesis of spherical silica. Soft sonication enhanced the aging of starting solutions, monodispersibility of spheres, and final sphere size. From this point of view, we suspect that water and ethanol may not be well mixed at atomic level.
Journal
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- Asian Pacific Confederation of Chemical Engineering congress program and abstracts
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Asian Pacific Confederation of Chemical Engineering congress program and abstracts 2004 (0), 939-939, 2004
The Society of Chemical Engineers, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680709201920
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- NII Article ID
- 130005053039
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- Text Lang
- en
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed