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197Au Mössbauer Study of Bimetallic Nanoparticles Prepared by Sonochemical Technique

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Abstract

By ultrasonic wave irradiation, the metallic ions in aqueous solution are reduced to metallic nanoparticles. Using the mixture solution of Au and Pd ions, core(Au)–shell(Pd) structured nanoparticles are prepared. 197Au Mössbauer spectra of core–shell structured nanoparticles contains two components, one is pure Au component due to the inner part of the Au core and the other is the positive isomer shift component due to the alloy layer at the interface of Au core and Pd shell. The thickness of the alloy layer is 0.5∼0.7 nm.

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Authors and Affiliations

  1. Research Reactor Institute, Kyoto University, Kumatori, Osaka, 590-0494, Japan

    Yasuhiro Kobayashi, Shinji Kiao & Makoto Seto

  2. Research Institute for Advanced Science and Technology, Osaka Prefecture University, Sakai, Osaka, 599-8570, Japan

    Hiroe Takatani, Mioko Nakanishi & Ryuichiro Oshima

Authors
  1. Yasuhiro Kobayashi
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  2. Shinji Kiao
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  3. Makoto Seto
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  4. Hiroe Takatani
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  5. Mioko Nakanishi
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  6. Ryuichiro Oshima
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Kobayashi, Y., Kiao, S., Seto, M. et al. 197Au Mössbauer Study of Bimetallic Nanoparticles Prepared by Sonochemical Technique. Hyperfine Interactions 156, 75–79 (2004). https://doi.org/10.1023/B:HYPE.0000043208.68127.74

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  • DOI: https://doi.org/10.1023/B:HYPE.0000043208.68127.74

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