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A novel electrochemical method for the analysis of hydrogen peroxide with the use of a glassy carbon electrode modified by a prussian blue/copper-gold bimetallic nanoparticles hybrid film

机译:普鲁士蓝/铜金双金属纳米粒子杂化膜修饰的玻碳电极用于分析过氧化氢的新型电化学方法

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摘要

A novel Prussian blue/copper-gold bimetallic nanoparticles hybrid film modified electrode was prepared by electrochemical deposition on a glassy carbon electrode (PB/Cu-AuNPs/GCE). Morphology and electrochemistry of this electrode were studied by UV-vis spectroscopy, scanning electron microscopy, X-ray diffraction, cyclic voltammetry and electrochemical impedance spectroscopy. The sensor showed significantly better electrocatalytic activity for the reduction of hydrogen peroxide in comparison with the single PB/GCE and PB/AuNPs/GCE. This was attributed to the synergistic effect of PB and Cu-Au bimetallic nanoparticles. Also, the sensor demonstrated an overall high level of performance for the analysis of H2O2 in the concentration range from 0.002 to 0.84mM.
机译:通过在玻璃碳电极(PB / Cu-AuNPs / GCE)上进行电化学沉积,制备了一种新型的普鲁士蓝/铜-金双金属纳米颗粒杂化膜修饰电极。通过紫外可见光谱,扫描电子显微镜,X射线衍射,循环伏安法和电化学阻抗谱研究了该电极的形态和电化学。与单个PB / GCE和PB / AuNPs / GCE相比,该传感器在还原过氧化氢方面表现出明显更好的电催化活性。这归因于PB和Cu-Au双金属纳米颗粒的协同作用。而且,该传感器在浓度范围为0.002至0.84mM的H2O2分析中表现出总体上较高的性能。

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