Single-Entity Electrocatalysis at Electrode Ensembles Prepared by Template Synthesis
Single-Entity Electrocatalysis at Electrode Ensembles Prepared by Template Synthesis
复制标题
通过模板合成制备的电极整体的单实体电催化
DOI：
10.1149/1945-7111/ac44b8
复制
发表时间：
2021
影响因子：
3.9
通讯作者：
Baker, Lane A.
中科院分区：
文献类型：
--
作者：
Siepser, Natasha P.;Choi, Myung-Hoon;Alden, Sasha E.;Baker, Lane A.
通过Au模板合成制备的纳米电极集成体（NEEs）作为概念验证样品平台，通过扫描电化学细胞显微镜（SECCM）研究单个电沉积材料。在这个平台上，非导电膜支持不会影响每个电极记录的电催化活性。使用低密度模板膜导致电极被隔离，因为初始膜孔通常被显著（微尺度）距离分开。在阵列电极上电沉积催化纳米粒子和观察电催化活性证明适合于相关的SECCM伏安测绘和电子显微镜。NEEs适用于研究表面金氧化、肼氧化和析氢（析氢反应，HER），以及NEEs上的Pt粒子（Pt-NEEs）的HER。
Nanoelectrode ensembles (NEEs), prepared by Au template synthesis, are presented as a proof-of-concept sample platform to study individual electrodeposited materials by scanning electrochemical cell microscopy (SECCM). With this platform, the non-conductive membrane support does not contribute to the electrocatalytic activity recorded at each electrode. Use of low-density template membranes results in electrodes that are isolated because initial membrane pores are typically separated by significant (microscale) distances. Electrodeposition of catalytic nanoparticles onto the electrodes of the array and observation of electrocatalytic activity are demonstrated to be suitable for correlative SECCM voltammetric mapping and electron microscopy. Suitability of NEEs for studies of surface Au oxidation, hydrazine oxidation, and hydrogen evolution (hydrogen evolution reaction, HER), and at Pt particles on NEEs (Pt-NEEs) for HER is demonstrated.