An EQCN assessment of electrocatalytic oxidation of methanol at nanostructured Au-Pt alloy nanoparticles

Jin Luo, Yongbing Lou, Mathew M. Maye, Chuan Jian Zhong, Maria Hepel

Research output: Contribution to journalArticle

50 Scopus citations

Abstract

Alloy nanocrystals encapsulated with alkyl dithiolates ("core-shell" nanoparticles) serve as an intriguing class of nanostructured catalysts. This paper reports the preliminary results of an electrochemical quartz-crystal nanobalance (EQCN) investigation of mass transport associated with the catalytic activation and methanol oxidation at nanostructured Au-Pt nanocrystals. It is demonstrated that the catalytic activation and oxidation of methanol are accompanied by mass fluxes across the nanostructured film. The mass transport involves oxidation-reduction of surface oxygenated species, methanol adsorption and oxidation, solvent breath and product release. The implication of the EQCN results to the understanding of the core-shell nanostructured catalytic mechanism is discussed.

Original languageEnglish (US)
Pages (from-to)172-176
Number of pages5
JournalElectrochemistry Communications
Volume3
Issue number4
DOIs
StatePublished - May 8 2001
Externally publishedYes

Keywords

  • Alloy nanoparticles
  • EQCN
  • Electrocatalytic
  • Methanol electrooxidation
  • Nanostructures

ASJC Scopus subject areas

  • Electrochemistry

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