石墨烯/离子液体/壳聚糖/血红蛋白修饰玻碳电极检测过氧化氢  

Determination of Hydrogen Peroxide by Graphene/Ionic Liquid/Chitosan Nanocomposite Modified Electrode

作　　者：韩金土[1] 曹立新[2] 杨豪[1] 杨晓烔 王亚云[1] 

机构地区：[1]信阳师范学院化学化工学院,河南信阳464000 [2]河南质量工程职业学院食品化工系,河南平顶山467000

出　　处：《信阳师范学院学报（自然科学版）》2012年第3期360-363,386,共5页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：河南省高校科技创新人才基金项目(2010HASTIT025);河南省科技创新人才基金项目(104100510020)

摘　　要：将石墨烯、离子液体(1-丁基-3-甲基-咪唑四氟硼酸盐)与壳聚糖结合,制备了一种新型的石墨烯-离子液体/壳聚糖纳米复合膜修饰玻碳电极.用循环伏安法研究了血红蛋白在该修饰电极上的直接电化学行为.结果表明,血红蛋白在该纳米复合膜电极上对过氧化氢具有良好的催化性能.过氧化氢的电流响应信号与其浓度在0.1～500μmol/L范围内呈线性关系,检出限为0.02μmol/L(RSN=3),为过氧化氢检测提供了一种灵敏的新方法.A modified glassy carbon electrode was fabricated based on graphene/ionic liquid/chitosan-hemeglobin composite film modification. The direct electrochemical behavior of hemoglobin at the modified electrode was investiga- ted by cyclic vohametry. The experimental results showed that hemeglobin has good electrocatalytic activity for hydro- gen peroxide on the nanocomposite modified electrode. The linear range of H2 02 was 0.1 - 500 μmol/L. The limit of detection was 0.02 μmol/L （RsN = 3 ）. The electrochemical sensor was used to determinate H2 O2 with good stability and reproducibility.

关 键 词：石墨烯 血红蛋白 离子液体 过氧化氢 

分 类 号：O657.15[理学—分析化学]