高等学校化学学报2001，Vol.22Issue(2)：206-211,6.
应用扫描电化学显微镜研究水/1,2-二氯乙烷界面上离子诱导的电子转移反应
Scanning Electrochemical Microscopy Study of Electron Transfer Across the Water/1,2-Dichloroethane Interface Induced by Common Ions
摘要
Abstract
In this work, we report the reverse electron transfer reaction between TCNQ in 1,2-dichloroethane(DCE) and ferrocyanide in water. This process is a thermodynamic unfavorable reaction and the reverse electron transfer reaction can only be obtained by scanning electrochemical microscopy(SECM) in the presence of suitable potential-determining ions, which govern the interfacial potential difference. In our case, the potential determining ions are tetrabutylammonium ion(TBA+) and tetraphenylarsonium ion(TPAs+). The effects of the concentrations of TBA+ and TPAs+ in two phases and other parameters have been studied in detail. The apparent heterogeneous rate constants(kf) were obtained under different values of Kp(Kp=cwi/coi) for both cases by fitting the SECM approach curves with theoretical ones and the results showed that they were controlled by the interfacial potential differences. The relationship between apparent heterogeneous rate constants and the interfacial potential differences obeys Butler-Volmer theory.关键词
扫描电化学显微镜/微电极/液/液界面/电子转移分类
化学化工引用本文复制引用
张志全,佟月红,孙鹏,邵元华..应用扫描电化学显微镜研究水/1,2-二氯乙烷界面上离子诱导的电子转移反应[J].高等学校化学学报,2001,22(2):206-211,6.基金项目
国家杰出青年基金 （）
