HRP/Cu自组装膜电极电催化还原亚硝酸根  

Electrocatalytic Reduction of Nitrite on Horseradish Peroxidase Self-assembled film Modified Copper Electrodes

作　　者：桑丽 王春涛[2] 方莉[1] 韩继红[1] 秦晓静[2] 

机构地区：[1]山西大学化学化工学院,太原030006 [2]太原师范学院化学系,太原030031

出　　处：《化学通报》2012年第7期637-641,共5页Chemistry

基　　金：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

摘　　要：本文采用自组装技术制备了HRP/Cu自组装膜修饰电极,并用循环伏安法、交流阻抗法研究了该电极在pH 5.0的磷酸盐缓冲溶液(PBS)中的直接电化学行为,以及pH对该自组装膜电极电催化还原NO2-的影响及其在不同浓度NO2-溶液中的电催化行为。结果表明,该自组装膜电极能够有效地电催化还原NO2-,且最佳pH范围为5.0～6.0;在pH 5.0的磷酸盐缓冲溶液中,当C(NO2-)≥2.0mmol/L时,HRP/Cu自组装膜电极对NO2-均表现出良好的电催化还原作用。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 NO2- concentration on catalytic effect were also studied. Results showed that the self- assembled film modified electrodes can electrocatalyze the reduction of NO2- 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 NO2- when C（ NO2- ） ≥2.0mmol/L.

关 键 词：自组装 辣根过氧化物酶 亚硝酸根 CU电极 

分 类 号：O643.3[理学—物理化学]