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Open AccessArticle

A Demonstration of Pt L3-Edge EXAFS Free from Au L3-Edge Using Log–Spiral Bent Crystal Laue Analyzers

Institute for Catalysis, Hokkaido University, Hokkaido 001-0021, Japan
Institute for Molecular Science, Aichi 444-8585, Japan
Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
Innovation Research Center for Fuel Cells, The University of Electro-Communications, Tokyo 182-8585, Japan
Japan Synchrotron Radiation Research (JASRI), Hyogo 679-5148, Japan
Authors to whom correspondence should be addressed.
Catalysts 2018, 8(5), 204;
Received: 30 March 2018 / Revised: 30 April 2018 / Accepted: 8 May 2018 / Published: 13 May 2018
(This article belongs to the Special Issue Nanomaterials for Environmental Purification and Energy Conversion)
Pt-Au nanostructures are important and well-studied fuel cell catalysts for their promising catalytic performance. However, a detailed quantitative local structure analysis, using extended X-ray absorption fine structure (EXAFS) spectroscopy, have been inhibited by interference between Pt and Au L3-edges. In this paper, Pt L3-edge XAFS analysis, free of Au L3 edge, is demonstrated for a Pt-Au reference sample using a low-cost log–spiral bent crystal Laue analyzer (BCLA). This method facilitates the EXAFS structural analysis of Pt-Au catalysts, which are important to improve fuel cell catalysts. View Full-Text
Keywords: Pt-Au; XAFS; BCLA Pt-Au; XAFS; BCLA
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Wakisaka, Y.; Kido, D.; Uehara, H.; Yuan, Q.; Takakusagi, S.; Uemura, Y.; Yokoyama, T.; Wada, T.; Uo, M.; Sakata, T.; Sekizawa, O.; Uruga, T.; Iwasawa, Y.; Asakura, K. A Demonstration of Pt L3-Edge EXAFS Free from Au L3-Edge Using Log–Spiral Bent Crystal Laue Analyzers. Catalysts 2018, 8, 204.

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