中文摘要：

在离子液体1-甲基咪唑-三氟乙酸中用循环伏安法（CV）电聚合苯胺制得离子液体掺杂聚苯胺膜修饰玻碳电极（IL-PANI/GCE）,进一步在其表面原位电沉积纳米铜粒子,构制用于测定H2O2的新型离子液体掺杂聚苯胺/纳米铜（nano-Cu/IL-PANI/GCE）电化学传感器.用扫描电镜（SEM）、循环伏安法（CV）和电化学阻抗谱法（EIS）表征此修饰电极,并讨论了其对H2O2的电催化还原机制.在0.1 mol/L NaOH溶液和-0.35 V电位下,用电流法测定了H2O2的含量,在20～1.12 mmol/L浓度范围内线性关系良好；检出限为0.1 μmol/L,响应时间约为3 s.

英文摘要：

A film consisting of a room temperature ionic liquid 1-methylimidazolium trifluoroacetate and polyaniline （IL-PANI） was electro-polymerized on glassy carbon electrode （GCE）, then a novel electrochemical sensor for the detection of hydrogen peroxide （H202 ） was constructed based on immobilizing copper nanoparticles （nano-Cu） on IL-PANI/GCE. The electrochemical activity and the electrocatalytical behavior of the sensor were characterized by cyclic voltammetry （CV） and electrochemical impedance spectroscopy （EIS）. Amperometry was used for the determination of H202 at a potential of -0.35 V versus Ag/AgC1 in a 0.10 mol/L sodium hydroxide solution, with a linear range from 20μmol/L to 1.12mmol/L, a detection limit of 0. 1 μmol/L, and a response time of around 3 s. The nano-Cu/IL-PANI/GCE exhibited good electrocatalytic properties for the electrochemical reduction of H2O2.