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Issue 27, 2014
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In situ back-side illumination fluorescence XAFS (BI-FXAFS) studies on platinum nanoparticles deposited on a HOPG surface as a model fuel cell: a new approach to the Pt-HOPG electrode/electrolyte interface

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Abstract

We measured the in situ polarization-dependent X-ray absorption fine structure of platinum nanoparticles (PtNPs) deposited on a flat highly oriented pyrolytic graphite (HOPG) substrate under electrochemical conditions using a back-side illumination method. In this method, the thin HOPG substrate with PtNPs deposited on one side was used as a window for incident and fluorescent X-rays, as well as an electrode. A bent crystal Laue analyzer (BCLA) was applied to the extraction of the Pt Lα fluorescent X-ray signals from strong scattered X-rays. Pt L3 edge XAFS spectra were observed for various electrode potentials and polarization directions.

Graphical abstract: In situ back-side illumination fluorescence XAFS (BI-FXAFS) studies on platinum nanoparticles deposited on a HOPG surface as a model fuel cell: a new approach to the Pt-HOPG electrode/electrolyte interface

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Supplementary files

Article information


Submitted
17 Jan 2014
Accepted
08 Apr 2014
First published
09 Apr 2014

Phys. Chem. Chem. Phys., 2014,16, 13748-13754
Article type
Paper
Author version available

In situ back-side illumination fluorescence XAFS (BI-FXAFS) studies on platinum nanoparticles deposited on a HOPG surface as a model fuel cell: a new approach to the Pt-HOPG electrode/electrolyte interface

H. Uehara, Y. Uemura, T. Ogawa, K. Kono, R. Ueno, Y. Niwa, H. Nitani, H. Abe, S. Takakusagi, M. Nomura, Y. Iwasawa and K. Asakura, Phys. Chem. Chem. Phys., 2014, 16, 13748
DOI: 10.1039/C4CP00265B

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