利用聚合物官能团对金属离子的配位作用,在电极表面原位制备了金属粒于.百先在玻碳电极(GCE)表面电沉积聚邻氨基苯甲酸(PoABA),再化学吸附铜离子(Cu2+),用水合肼还原得到单质铜(Cu0).采用扫描电子显微镜和能谱分析表征了聚邻氨基苯甲酸-铜(PoABA-Cu0)复合薄膜的表面形貌和元素构成,研究了PoABA-Cu0修饰电极的电化学性能,并以其检测了过氧化氢(H2O2).结果表明,电极表面被修饰上了一层PoABA-Cu0复合薄膜；制备的修饰电极对H2O2具有良好的电催化性能,在邻氨基苯甲酸的聚合圈数为10、Cu2的吸附时间为10 min、工作电压为-0.3 V时,该修饰电极对H2O2表现出了最佳的检测性能,其线性浓度范围为5.0 ×10-5～1.0×10-2 mol/L,灵敏度为96.3μA·L/(mmol· cm),检测限为5.0×10-5 mol/L,且具有较好的稳定性.
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