Title

Electrochemical Oxidation of Size-Selected Pt Nanoparticles Studied Using in Situ High-Energy-Resolution X-ray Absorption Spectroscopy

Authors

Authors

L. R. Merte; F. Behafarid; D. J. Miller; D. Friebel; S. Cho; F. Mbuga; D. Sokaras; R. Alonso-Mori; T. C. Weng; D. Nordlund; A. Nilsson;B. R. Cuenya

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

ACS Catal.

Keywords

Pt; PtOx; nanoparticle; electrocatalysis; HERFD-XAS; XANES; OXYGEN REDUCTION REACTION; FUEL-CELL CATALYSTS; PROTON-EXCHANGE; MEMBRANE; PARTICLE-SIZE; PLATINUM NANOPARTICLES; ELECTRONIC-PROPERTIES; DISPERSED PLATINUM; THERMAL-STABILITY; ELECTROCATALYSIS; SURFACE; Chemistry, Physical

Abstract

High-energy-resolution fluorescence-detected Xray absorption spectroscopy (HERFD-XAS) has been applied to study the chemical state of similar to 1.2 nm size-selected Pt nanoparticles (NPs) in an electrochemical environment under potential control. Spectral features due to chemisorbed hydrogen, chemisorbed O/OH, and platinum oxides can be distinguished with increasing potential. Pt electro-oxidation follows two competitive pathways involving both oxide formation and Pt dissolution.

Journal Title

Acs Catalysis

Volume

2

Issue/Number

11

Publication Date

1-1-2012

Document Type

Article

DOI Link

http://dx.doi.org/10.1021/cs300494f

Language

English

First Page

2371

Last Page

2376

WOS Identifier

WOS:000310723900018

ISSN

2155-5435

Recommended Citation

"Electrochemical Oxidation of Size-Selected Pt Nanoparticles Studied Using in Situ High-Energy-Resolution X-ray Absorption Spectroscopy" (2012). Faculty Bibliography 2010s. 3021.
https://stars.library.ucf.edu/facultybib2010/3021