Issue 1, 2018
From the journal:

Journal of Analytical Atomic Spectrometry

A feasibility study of “range-extended” EXAFS measurement at the Pt L3-edge of Pt/Al2O3 in the presence of Au2O3†

Hiroyuki Asakura, ORCID logo *ab   Naomi Kawamura, ORCID logo c   Masaichiro Mizumaki,c   Kiyofumi Nitta,c   Kenji Ishii, ORCID logo d   Saburo Hosokawa, ORCID logo ab   Kentaro Teramura ORCID logo ab  and  Tsunehiro Tanaka ORCID logo *ab  

* Corresponding authors

a Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Kyotodaigaku Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
E-mail: asakura@moleng.kyoto-u.ac.jp, tanakat@moleng.kyoto-u.ac.jp

b Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, 1-30 Goryo-Ohara, Nishikyo-ku, Kyoto 615-8245, Japan

c Japan Synchrotron Radiation Research Institute, SPring-8, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan

d Synchrotron Radiation Research Center, National Institutes for Quantum and Radiological Science and Technology, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan

Abstract

A feasibility study of a “range-extended” EXAFS measurement was conducted on the Pt L3-edge of Pt/Al2O3 in the presence of Au2O3. The Pt L3-edge EXAFS spectrum of the Pt/Al2O3 sample was successfully obtained without any interference at the Au L3-edge by means of high energy resolution fluorescence detection (HERFD) of the Pt Lα1 line with a Bragg type X-ray emission analyser crystal. A newly observed significant enhancement of the EXAFS oscillation amplitude was discussed on the points of the core-hole lifetime width and X-ray energy width. We also successfully obtained reasonable physical parameters by a conventional EXAFS curve fitting on the HERFD-EXAFS data. The HERFD-EXAFS technique can broaden the scope of application of EXAFS spectroscopy for complicated samples with many different elements.

Graphical abstract: A feasibility study of “range-extended” EXAFS measurement at the Pt L3-edge of Pt/Al2O3 in the presence of Au2O3

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Article information

DOI
https://doi.org/10.1039/C7JA00309A
Article type
Paper
Submitted
07 Sep 2017
Accepted
27 Oct 2017
First published
27 Oct 2017

J. Anal. At. Spectrom., 2018,33, 84-89

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A feasibility study of “range-extended” EXAFS measurement at the Pt L3-edge of Pt/Al2O3 in the presence of Au2O3

H. Asakura, N. Kawamura, M. Mizumaki, K. Nitta, K. Ishii, S. Hosokawa, K. Teramura and T. Tanaka, J. Anal. At. Spectrom., 2018, 33, 84 DOI: 10.1039/C7JA00309A

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