Issue 27, 2014

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

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

Supplementary files

Article information

Article type
Paper
Submitted
17 ม.ค. 2557
Accepted
08 เม.ย. 2557
First published
09 เม.ย. 2557

Phys. Chem. Chem. Phys., 2014,16, 13748-13754

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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