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采用一种温和且有效的方法,将聚丙烯酸非共价修饰到碳纳米管上,并以其为模板,在碳纳米管上原位均匀的生长铜纳米粒子,制备了铜/聚丙烯酸/碳纳米管(Cu/PAA/CNT)纳米复合材料,并以此材料构建了一种新型的非酶H2O2传感器,研究了其对H2O2的电催化行为。结果表明:铜纳米粒子较均匀的生长在碳纳米管上,制备的纳米复合材料修饰到电极表面对H2O2表现出良好的电流响应,可实现对H2O2的灵敏测定,其响应电流与H2O2的浓度在1.9×10-6～8.0×10-4mol/L范围内呈良好的线性关系,检测限达6.3×10-7mol/L。
A mild and effective method was used to non-covalently modify polyacrylic acid onto carbon nanotubes. Using this as a template, copper nanoparticles were uniformly grown on carbon nanotubes in situ and copper / polyacrylic acid / carbon (Cu / PAA / CNT) nanocomposites were synthesized. A novel non-enzymatic H2O2 sensor was constructed and the electrocatalytic activity of H2O2 was studied. The results show that the copper nanoparticles grow uniformly on the carbon nanotubes. The prepared nanocomposites modified to the electrode surface show a good current response to H2O2, which can achieve a sensitive determination of H2O2. The response current and H2O2 concentration in the 1.9 × 10-6 ~ 8.0 × 10-4mol / L showed a good linear relationship between the detection limit of 6.3 × 10-7mol / L.