Synergy between Plasmonic and Electrocatalytic Activation of Methanol Oxidation on Palladium–Silver Alloy Nanotubes

Lin Huang, Jiasui Zou, Jin Yu Ye, Zhi You Zhou, Zhang Lin, Xiongwu Kang, Prashant K. Jain, Shaowei Chen

Research output: Contribution to journalArticle

Abstract

Localized surface plasmon resonance (LSPR) excitation of noble metal nanoparticles has been shown to accelerate and drive photochemical reactions. Here, LSPR excitation is shown to enhance the electrocatalysis of a fuel-cell-relevant reaction. The electrocatalyst consists of PdxAg alloy nanotubes (NTs), which combine the catalytic activity of Pd toward the methanol oxidation reaction (MOR) and the visible-light plasmonic response of Ag. The alloy electrocatalyst exhibits enhanced MOR activity under LSPR excitation with significantly higher current densities and a shift to more positive potentials. The modulation of MOR activity is ascribed primarily to hot holes generated by LSPR excitation of the PdxAg NTs.

Original languageEnglish (US)
Pages (from-to)8794-8798
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number26
DOIs
StatePublished - Jun 24 2019

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Keywords

  • electrocatalysis
  • hot carriers
  • localized surface plasmon resonance
  • nanoparticles
  • palladium–silver alloy

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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