TY - GEN
T1 - FTIR probing of CO adsorption on silica-supported binary and ternary Pt-alloy nanoparticle catalysts
AU - Mott, Derrick
AU - Wang, Lichang
AU - Luo, Jin
AU - Zhong, Chuan Jian
PY - 2008/12/1
Y1 - 2008/12/1
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:77955896095
SN - 9780841269941
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
T2 - 236th National Meeting and Exposition of the American Chemical Society, ACS 2008
Y2 - 17 August 2008 through 21 August 2008
ER -