Issue 21, 2010
From the journal:

Physical Chemistry Chemical Physics

Peroxide-like intermediate observed at hydrogen rich condition on Pt(111) after interaction with oxygen

Janay B. MacNaughton,a   Lars-Åke Näslund,a   Toyli Anniyev,a   Hirohito Ogasawaraa  and  Anders Nilsson*a  

* Corresponding authors

a Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, USA
E-mail: nilsson@slac.stanford.edu
Fax: +1 650 926 4100
Tel: +1 650 926 3300

Abstract

Hydrogen peroxide has been found to form as a byproduct during fuel cell operation, which is linked to the degradation of the ion exchange membrane resulting in a shorter lifetime of the fuel cell. Using O 1s X-ray photoelectron spectroscopy and X-ray absorption spectroscopy we investigated the molecular oxygen adsorption on hydrogenated Pt(111) and found that adsorbed hydrogen promotes the formation of a hydrogen peroxide-like intermediate. Polarization dependent X-ray absorption spectroscopy reveals that the O–O molecular axis is close to parallel and the OH group is perpendicular to the surface.

Graphical abstract: Peroxide-like intermediate observed at hydrogen rich condition on Pt(111) after interaction with oxygen

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Article information

DOI
https://doi.org/10.1039/B926409B
Article type
Paper
Submitted
14 Dec 2009
Accepted
19 Mar 2010
First published
12 Apr 2010

Phys. Chem. Chem. Phys., 2010,12, 5712-5716

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Peroxide-like intermediate observed at hydrogen rich condition on Pt(111) after interaction with oxygen

J. B. MacNaughton, L. Näslund, T. Anniyev, H. Ogasawara and A. Nilsson, Phys. Chem. Chem. Phys., 2010, 12, 5712 DOI: 10.1039/B926409B

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