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 language | English (US) |
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Pages (from-to) | 8794-8798 |
Number of pages | 5 |
Journal | Angewandte Chemie - International Edition |
Volume | 58 |
Issue number | 26 |
DOIs | |
State | Published - Jun 24 2019 |
Keywords
- electrocatalysis
- hot carriers
- localized surface plasmon resonance
- nanoparticles
- palladium–silver alloy
ASJC Scopus subject areas
- Catalysis
- General Chemistry