Renewable manganous hexacyanoferrate-modified graphite organosilicate composite electrode and its electrocatalytic oxidation of L-cysteine |
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| Authors: | Peng Wang Xiaoyan Jing Wenyan Zhang Guoyi Zhu |
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| Affiliation: | (1) Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P.R. China,;(2) Department of Chemical Engineering, Harbin Engineering University, Harbin 150001, P.R. China, |
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| Abstract: | Manganous hexacyanoferrate (MnHCF) supported on graphite powder was dispersed into methyltrimethoxysilane-derived gels to yield a conductive composite, which was used as electrode material to construct a renewable three-dimensional MnHCF-modifed electrode. MnHCF acts as a catalyst, graphite powder ensures conductivity by percolation, the silicate provides a rigid porous backbone, and the methyl groups endow hydrophobicity and thus limit the wetting section of the modified electrode. Cyclic voltammetry was exploited to investigate the dependence of electrochemical behavior on supporting electrolytes containing various cations. The chemically modified electrode can electrocatalytically oxidize L-cysteine, and exhibits a distinct advantage of polishing in the event of surface fouling, as well as simple preparation, good chemical and mechanical stability, and good repeatability of surface renewal. Electronic Publication |
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| Keywords: | Manganous hexacyanoferrate Graphite organosilicate electrode Electrocatalytic oxidation L-Cysteine Sol-gel synthesis |
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