Preparation of Monodispersed Cu Nanoparticles by Microwave-Assisted Alcohol Reduction

• Nakamura Takashi

  Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University

• Tsukahara Yasunori

  Graduate School of Engineering, Osaka University

• Sakata Takao

  Research Center for Ultra-High Voltage Electron Microscopy, Osaka University

• Mori Hirotaro

  Research Center for Ultra-High Voltage Electron Microscopy, Osaka University

• Kanbe Yumi

  Tokai Rubber Industries Ltd.

• Bessho Hisami

  Tokai Rubber Industries Ltd.

• Wada Yuji

  Department of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University Graduate School of Engineering, Osaka University

抄録

Copper (Cu) nanoparticles were prepared via a microwave-assisted alcohol reduction process. We have succeeded in selectively preparing monodispersed Cu nanoparticles with or without surface plasmon absorption. Monodispersed Cu nanoparticles with average sizes of 5–6 nm (with the surface plasmon absorption) and 2–3 nm (without the surface plasmon absorption) were prepared using copper(II) octanoate and copper(II) myristate, respectively, as the copper precursors by reduction with alcohols under microwave-heating at 443 K for 20 min. Noteworthy, Cu₂O and CuO were not observed in the electron diffraction patterns of the prepared Cu nanoparticles, demonstrating chemical stability of the nanoparticles against oxidation in air. When using a long-chain carboxylate as an organic moiety bearing a short alkyl chain (copper(II) octanoate), the rate of the reduction was faster than long one (copper(II) myristate). The activation energies for the reduction of Cu²⁺ using copper(II) octanoate and copper(II) myristate were estimated to be 115 and 124 kJ mol⁻¹, respectively. We have shown that the length of the alkyl chain contained in the copper precursors, heating temperature, and microwave-irradiation time are important for rapidly preparing monodispersed Cu nanoparticles.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 80 (1), 224-232, 2007

  公益社団法人 日本化学会

キーワード

• General Chemistry

詳細情報

• CRID: 1390001204143220608
• NII論文ID: 130004152191
• NII論文ID: 10018708889
• NII書誌ID: AA00580132
• DOI: 10.1246/bcsj.80.224
• ISSN: 13480634
• ISSN: 00092673
• NDL書誌ID: 8603758
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8603758
• Web Site: https://academic.oup.com/bcsj/article-pdf/80/1/224/56267895/bcsj.80.224.pdf
• 本文言語コード: en
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