Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 26, Pages 8794-8798Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201903290
Keywords
electrocatalysis; hot carriers; localized surface plasmon resonance; nanoparticles; palladium-silver alloy
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Funding
- National Natural Science Foundation of China [51602106]
- Guangdong Innovative and Entrepreneurial Research Team Program [2016ZT06N569]
- National Science Foundation [NSF CHE-1455011]
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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.
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