Enhancement of electrocatalytic activity of octahedral Au@Pt core-shell nanoparticles by the surface plasmon excitation
Enhancement of electrocatalytic activity of octahedral Au@Pt core-shell nanoparticles by the surface plasmon excitation
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DOI：
10.1117/12.2274899
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发表时间：
2017-04
期刊：
影响因子：
--
通讯作者：
T. Kameyama;Kentaro Sato;T. Torimoto
中科院分区：
文献类型：
--
作者：
T. Kameyama;Kentaro Sato;T. Torimoto
采用电化学方法将未充放电沉积在Au核上的Cu单层置换为Pt单层，成功制备了八面体Au核Pt壳（Au@Pt）纳米粒子。可见光照射Au@Pt纳米粒子固定电极，增大了氧还原反应的阴极电流，表明八面体Au核粒子局域表面等离子体共振峰的光激发增强了Pt壳层的电催化活性。
Octahedral Au-core Pt-shell (Au@Pt) nanoparticles were successfully prepared via a galvanic replacement of Cu monolayer underpotentially deposited on Au core with a Pt monolayer. The visible light irradiation to Au@Pt nanoparticles-immobilized electrodes enlarged a cathodic current of oxygen reduction reaction (ORR), suggesting that the electrocatalytic activity of Pt shell layer was enhanced by the photoexcitation of localized surface plasmon resonance peak of octahedral Au-core particles.