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将血红蛋白和季铵化聚乙烯吡啶按一定比例混合,滴涂在表面修饰了纳米铂的玻碳电极上,成功制备了性能良好的过氧化氢传感器.通过采用循环伏安法(CV)和计时电流法考察了该传感器的电化学性质.最佳实验条件下,其峰电流值与H2O2浓度在3.5×10-6~3.15×10-3mol/L成良好的线性关系,检测下限为1.5×10-6mol/L(S/N=3),相关系数为0.999 2.实验证明该电极对过氧化氢具有响应快,灵敏度高、线性范围宽和稳定性好的性能.
The hemoglobin and quaternized polyvinylpyridine were mixed in a certain proportion and dropped onto the glassy carbon electrode with nano-platinum surface modification to prepare a good performance hydrogen peroxide sensor.By adopting cyclic voltammetry (CV) and timing The electrochemical method was used to investigate the electrochemical properties of the sensor.Under the best experimental conditions, the peak current value was in good linear relationship with the concentration of H2O2 in the range of 3.5 × 10-6 ~ 3.15 × 10-3mol / L with the detection limit of 1.5 × 10 -6 mol / L (S / N = 3) with a correlation coefficient of 0.999 2. The results show that the electrode has a fast response to hydrogen peroxide, high sensitivity, wide linear range and good stability.