Compositional dependence of the stability of AuCu alloy nanoparticles

Zhichuan Xu; Erica Lai; Yang Shao-Horn; Kimberly Hamad-Schifferli

doi:10.1039/c2cc31576a

Compositional dependence of the stability of AuCu alloy nanoparticles

Chem Commun (Camb). 2012 Jun 7;48(45):5626-8. doi: 10.1039/c2cc31576a. Epub 2012 Apr 24.

Authors

Zhichuan Xu¹, Erica Lai, Yang Shao-Horn, Kimberly Hamad-Schifferli

Affiliation

¹ Dept. of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA.

PMID: 22531479
DOI: 10.1039/c2cc31576a

Abstract

The oxidation of AuCu nanoparticles was studied as a function of composition and temperature. Oxidation rates at 110 °C were higher for NPs with higher Cu content, showing that Au stabilized the Cu. Electrochemistry measurements show that AuCu could be a promising catalyst for lowering the over potential of CO(2) reduction.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Alloys / chemistry*
Carbon Dioxide / chemistry
Catalysis
Copper / chemistry*
Electrochemical Techniques
Gold / chemistry*
Nanoparticles / chemistry*
Nanoparticles / ultrastructure
Oxidation-Reduction
Spectrophotometry
Temperature

Substances

Alloys
Carbon Dioxide
Gold
Copper