A computational and experimental study of the cyclic voltammetry response of partially blocked electrodes, part III:: interfacial liquid-liquid kinetics of aqueous vitamin B12s with random arrays of femtolitre microdroplets of dibromocyclohexane

被引：33

作者：

Davies, TJ ^{[1
]}

Brookes, BA ^{[1
]}

Compton, RG ^{[1
]}

机构：

[1] Univ Oxford, Phys & Theoret Chem Lab, Oxford OX1 3QZ, England

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2004年 / 566卷 / 01期

关键词：

partially blocked electrodes; finite difference methods; modified electrodes; microdroplets randomly arranged ensembles; vitamin B-12;

D O I：

10.1016/j.jelechem.2003.11.026

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The cyclic voltammetric response of electrodes modified with catalytically reactive microdroplets is modelled using finite difference simulations and a method is presented for the determination of kinetic parameters for the coupled heterogeneous reaction. The method is first applied to investigate the liquid-liquid reaction between pure trans-1,2-dibromocyclohexane (DBCH) microdroplets, deposited on the Surface of a basal plane pyrolytic graphite electrode, and vitamin B 12, in aqueous solution. Second, cyclic voltammetry on electrodes modified with micro-droplets of DBCH diluted in dodecane is employed to determine the apparent bimolecular interfacial rate constant for the initial step in the DBCH(oil)B-12s (aq) reaction. The results are compared and contrasted with a previous SECM/ITIES study of a similar reaction. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：193 / 216

页数：24

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