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《Chemistry》 2012-07
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Electrocatalytic Reduction of Nitrite on Horseradish Peroxidase Self-assembled film Modified Copper Electrodes

Sang Li1,Wang Chuntao2*,Fang Li1*,Han Jihong1,Qin Xiaojing2(1School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006; 2Taiyuan Normal University,Taiyuan 030012)  
The copper electrodes were modified with self-assembled film of HRP.In phosphate buffer solution of pH 5.0,the direct electrochemical behavior of the electrodes was studied by cyclic voltammetry and AC impedance.The influences of pH and NO-2 concentration on catalytic effect were also studied.Results showed that the self-assembled film modified electrodes can electrocatalyze the reduction of NO-2 solution effectively,and the optimal pH range is 5.0 to 6.0.The prepared HRP/Cu electrodes showed favourable catalytic capacity in electrocatalytic reduction of NO-2 when C(NO-2)≥2.0mmol/L.
【Fund】: 山西省自然科学基金项目(2011011007-2);; 山西省教育厅高校科技开发项目(20101117)资助
【CateGory Index】: O643.3
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