双极纳米电极阵列实现单个铂纳米颗粒上氢气析出反应的电致化学发光成像
Electrochemiluminescence Imaging Hydrogen Evolution Reaction on Single Platinum Nanoparticles Using a Bipolar Nanoelectrode Array
Received date: 2021-02-14
Revised date: 2021-03-24
Online published: 2021-03-27
秦祥 , 李仲秋 , 潘建斌 , 李剑 , 王康 , 夏兴华 . 双极纳米电极阵列实现单个铂纳米颗粒上氢气析出反应的电致化学发光成像[J]. 电化学, 2021 , 27(2) : 157 -167 . DOI: 10.13208/j.electrochem.201251
A high-density (5.7 × 108 cm-2) nanoelectrode array with the electrode diameter of 200 nm and the interelectrode distance of 450 nm were fabricated. The nanoelectrode array consisted of gold nanowires embedded in a porous anodic aluminum oxide (AAO) matrix, having regular nanoelectrode distribution and highly uniform nanoelectrode size. The gold nanoelectrode array was used as a closed bipolar nanoelectrode array combined with electrochemiluminescence (ECL) method to map the electrocatalytic activity of platinum nanoparticles toward hydrogen evolution reaction (HER) by modifying the catalysts on single nanoelectrodes. Results show that HER on single bipolar nanoelectrodes could be imaged with the sub-micrometer spatial resolution. The present approach offers a platform to image local electrochemical activity of electrocatalytic materials, energy materials and cellular processes with high spatial resolution.
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