Preparation and Electrochemical Properties of Manganese Hexacyanoferrate Modified Glassy Carbon Electrode  

作　　者：刘有芹 颜芸 沈含熙 

机构地区：[1]Department of Applied Chemistry, College of Sciences, South China Agricultural University, Guangzhou, Guangdong 510642, China [2]Department of Chemistry, Nankai University, Tianjin 300071, China

出　　处：《Chinese Journal of Chemistry》2005年第9期1165-1172,共8页中国化学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （No. 20075012） the and the President Science Foundation of South China Agricultural University （No. K05053）.

摘　　要：A thin film of manganese hexacyanoferrate （MnHCF） was electrochemically formed on a glassy carbon （GC） electrode to prepare a chemically modified electrode （CME）. The mechanism of film formation of MnHCF and its growth process were investigated in detail by cyclic voltammetry. The results show that the stoichiometric composition of MnHCF is Mn^ⅢFe^Ⅲ（CN）6, an analogue of prussian yellow. There exist three clear-cut stages in the whole modification process and the last stage is indispensable to the fabrication of homogenized, stable MnHCF film and must last for an appropriate time. The surface morphology of MnHCF/GC electrode was characterized by scanning electron microscopy （SEM）, which further verified the effective deposition of MnHCF film on GC. The kinetic constants of MnHCF/GC electrode process were also evaluated. The resulting MnHCF film modified electrode presented good stability and high electrocatalytic activity toward the oxidation of H2O2, indicating that MnHCF film possesses function of catalase and can be expected for analytical purposes.A thin film of manganese hexacyanoferrate （MnHCF） was electrochemically formed on a glassy carbon （GC） electrode to prepare a chemically modified electrode （CME）. The mechanism of film formation of MnHCF and its growth process were investigated in detail by cyclic voltammetry. The results show that the stoichiometric composition of MnHCF is Mn^ⅢFe^Ⅲ（CN）6, an analogue of prussian yellow. There exist three clear-cut stages in the whole modification process and the last stage is indispensable to the fabrication of homogenized, stable MnHCF film and must last for an appropriate time. The surface morphology of MnHCF/GC electrode was characterized by scanning electron microscopy （SEM）, which further verified the effective deposition of MnHCF film on GC. The kinetic constants of MnHCF/GC electrode process were also evaluated. The resulting MnHCF film modified electrode presented good stability and high electrocatalytic activity toward the oxidation of H2O2, indicating that MnHCF film possesses function of catalase and can be expected for analytical purposes.

关 键 词：manganese hexacyanoferrate modified electrode film growth mechanism ELECTROCATALYSIS 

分 类 号：O646.22[理学—物理化学]