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

1
Institute for Catalysis, Hokkaido University, Hokkaido 001-0021, Japan
2
Institute for Molecular Science, Aichi 444-8585, Japan
3
Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
4
Innovation Research Center for Fuel Cells, The University of Electro-Communications, Tokyo 182-8585, Japan
5
Japan Synchrotron Radiation Research (JASRI), Hyogo 679-5148, Japan
*
Authors to whom correspondence should be addressed.
Catalysts 2018, 8(5), 204; https://doi.org/10.3390/catal8050204
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)
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Abstract

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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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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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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