FTIR probing of CO adsorption on silica-supported binary and ternary Pt-alloy nanoparticle catalysts

Derrick Mott, Lichang Wang, Jin Luo, Chuan Jian Zhong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The understanding of the surface properties of binary or ternary Pt-alloy nanoparticles is essential for manipulating their electrocatalytic properties. Carbon-supported binary or ternary Pt-alloy nanoparticles synthesized by reduction-encapsulation chemical methods have recently been shown to exhibit high electrocatalytic activity towards oxygen reduction reaction and methanol oxidation reaction. This paper reports findings of an FTIR investigation of CO adsorption on silica-supported PtFe, PtVFe, and PtNiFe nanoparticles (2-5 nm) with controlled multimetallic composition. The detection of CO stretching frequencies different from the monometallic counterparts has substantiated the surface bimetallic or trimetallic alloy properties. New insights into the correlation between alloy composition and surface binding properties are discussed, as supported by a computational modeling results. The findings have interesting implications to the design of binary or ternary Pt-alloy nanoparticles as highly-active electrocatalysts.

Original languageEnglish
Title of host publicationAmerican Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
Publication statusPublished - 2008 Dec 1
Externally publishedYes
Event236th National Meeting and Exposition of the American Chemical Society, ACS 2008 - Philadelpia, PA, United States
Duration: 2008 Aug 172008 Aug 21

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Other

Other236th National Meeting and Exposition of the American Chemical Society, ACS 2008
CountryUnited States
CityPhiladelpia, PA
Period08/8/1708/8/21

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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