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Synergy between Plasmonic and Electrocatalytic Activation of Methanol Oxidation on Palladium–Silver Alloy Nanotubes
Author(s) -
Huang Lin,
Zou Jiasui,
Ye JinYu,
Zhou ZhiYou,
Lin Zhang,
Kang Xiongwu,
Jain Prashant K.,
Chen Shaowei
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201903290
Subject(s) - electrocatalyst , surface plasmon resonance , palladium , noble metal , catalysis , photochemistry , methanol , plasmon , alloy , materials science , nanoparticle , chemistry , chemical engineering , nanotechnology , inorganic chemistry , electrochemistry , electrode , optoelectronics , metallurgy , organic chemistry , engineering
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 Pd x Ag 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 Pd x Ag NTs.