Observation of kinetic heterogeneity on highly ordered pyrolytic graphite using electrogenerated chemiluminescence

Observation of kinetic heterogeneity on highly ordered pyrolytic graphite using electrogenerated chemiluminescence
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利用电化学发光观察高度有序热解石墨的动力学异质性

DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
R. Engstrom
R. Engstrom
中科院分区：
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文献类型：
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作者：
Robert J. Bowling;R. McCreery;C. Pharr;R. Engstrom

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利用电致化学发光成像技术研究了高度有序热解石墨（HOPG）电极上的动力学不均匀性。鲁米诺在碱性过氧化氢中的反应与一个敏感的显微镜为基础的成像系统，以监测在HOPG表面上的各个区域的电子转移的过程。的能力，图像与时间分辨率提供了建设的地方伏安图，使平面和缺陷丰富的HOPG之间的动力学差异的估计可以得到。电化学预处理的基础平面HOPG产生的表面电化学类似于一个缺陷丰富的表面
Kinetic heterogeneity on highly ordered pyrolytic graphite (HOPG) electrodes was characterized by using electrogenerated chemiluminescence imaging. The reaction of luminol in alkaline peroxide was used with a sensitive microscope-based imaging system to monitor the course of electron transfer at various regions on the HOPG surface. The ability to image with temporal resolution provided for the construction of local voltammograms, so that estimates of kinetic differences between plane and defect-rich HOPG could be obtained. Electrochemical pretreatment of basal plane HOPG produced a surface electrochemically similar to a defect-rich surface