Department of Chemistry, University of Washington , Seattle, Washington 98195-1700, United States.
J Am Chem Soc. 2014 Jun 25;136(25):8879-82. doi: 10.1021/ja503656a. Epub 2014 Jun 11.
Here we report the use of fast-scan cyclic voltammetry (FSCV) to study transient collision and immobilization events of single electrocatalytic metal nanoparticles (NPs) on an inert electrode. In this study, a fast, repetitive voltage signal is continuously scanned on an ultramicroelectrode and its faradaic signal is recorded. Electrocatalytically active metal NPs are allowed to collide and immobilize on the electrode resulting in the direct recording of the transient voltammetric response of single NPs. This approach enables one to obtain the transient voltammetric response and electrocatalytic effects of single catalytic NPs as they interact with an inert electrode. The use of FSCV has enabled us to obtain chemical information, which is otherwise difficult to study with previous amperometric methods.
在这里，我们报告了使用快速扫描循环伏安法（FSCV）来研究单个电催化金属纳米粒子（NPs）在惰性电极上的瞬态碰撞和固定事件。在这项研究中，在超微电极上连续扫描快速、重复的电压信号，并记录其法拉第信号。使电催化活性金属 NPs 碰撞并固定在电极上，从而直接记录单个 NPs 的瞬态伏安响应。这种方法可以使我们获得单个催化 NPs 与惰性电极相互作用时的瞬态伏安响应和电催化效应。使用 FSCV 使我们能够获得化学信息，而这是以前的安培法难以研究的。
