石墨烯/铜修饰电极催化还原过氧化氢  

Graphene / Copper Modified Electrode for Catalytic Reduction of Hydrogen Peroxide

作　　者：徐雯[1] 陈子君[1] 

机构地区：[1]黄山学院化学化工学院,安徽黄山245041

出　　处：《绍兴文理学院学报》2015年第9期37-40,共4页Journal of Shaoxing University

基　　金：安徽高校省级自然科学研究项目(KJ2013B268);黄山学院科研基金资助(2010xkj016)

摘　　要：利用滴涂法制备石墨烯修饰电极，再利用循环伏安法制备石墨烯／铜修饰电极，并研究了该修饰电极对过氧化氢的电催化还原性能．研究结果表明，在pH=7．0的磷酸缓冲溶液中，此修饰电极对H2O2的还原过程具有极好的催化效果．在该修饰电极上，H：02的还原电流在浓度为5．0×10^-7～1．0×10^-5mol／L和1．0×10^-5-5．0×10^-3mol／L范围内分段呈良好的线性关系，检出限低至1×10^-7mol／L，可用于微量过氧化氢的测定．Graphene-modified electrode was prepared by drops of coating, then the stable electroactive thin film of copper nanoparticles was deposited on the surface of grapheme-modified electrode using cyclic vohammetry, and the electrocatalytic performance of hydrogen peroxide at the modified electrode was studied. In pH = 7.0 phosphate buffer solution, the composite filim shows excellent electrocalytic activity for the reduction of H2O2. The reduction current is well- proportional to the concentration of H2O2over the range of 5.0× 10^-7 1.0×10^-5mol/L and 1. 0 × 10^-5 - 5. 0 × 10^-3mol/L, and when the detection limit of hydroquinone is estimated to be 1.0 × 10^-7 mol/L, it can be used for the determination of trace hydrogen peroxide .

关 键 词：石墨烯 铜 修饰电极 过氧化氢 

分 类 号：O646.54[理学—物理化学]