摘 要:银纳米颗粒和铜纳米颗粒都具有比表面积大和表面活性中心数目多等纳米金属所具有的众多特性。银纳米颗粒显现出优异的物理、化学和生物学性能,在电学、光学和催化等众多方面具有良好的性能,并且银纳米颗粒的强大的抗菌活性在生物研究发面应用广泛。铜纳米颗粒具有较高的活性和选择性。在实验中,采用恒电位沉积的方法制备银纳米颗粒和铜纳米颗粒修饰的玻碳电极。通过控制电沉积时间和电压等条件,然后用循环伏安法对不同条件下制得的修饰电极进行表征,并根据CV曲线图选择合适的电极制备条件。结果表明已修饰的电极具有优于裸玻碳电极的良好的电化学性能,可用于进一步的实践应用。 关键词:银纳米颗粒;铜纳米颗粒;玻碳电极;电沉积 7288
Research Glassy Carbon Electrode Modified Nano-silver
Abstract: Silver nanoparticles and copper nanoparticles articles have many characteristics of nano metal such as large specific surface area and much more surface active center .Silver nanoparticles show the physical,chemical and biological properties, and it has a good performance in the electrical, optical and catalytic,and silver nanoparticles have powerful antibacterial activity in biological research and it is been widely used.Copper nanoparticles have a better activity and selectivity. Preparation of the glassy carbon electrode with silver nanoparticles or copper nanoparticles modified, by constant potential deposition , eduction of silver nitrate and copper sulfate modified glassy carbon electrode. In the experiment, we control the electrodeposition time and voltage conditions, and then use cyclic voltammetry under different conditions modified electrodes were characterized, and according to the CV curve to select suitable condition of the electrode. The results showed that the electrode modified electrochemical performance, which can be used for further applications .is better than the bare glassy carbon electrode.
Key Words: Silver nanoparticles; copper nanoparticles; glassy carbon electrode; electrodeposition.
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