摘要
制备了金纳米粒子/碳纳米管复合膜修饰的玻碳电极(GNP/CNT/GC),研究该电极上对苯二酚的电化学行为。结果表明:复合膜修饰玻碳电极综合了碳纳米管和金纳米粒子的电催化活性,提高了对苯二酚电化学反应的可逆性,增强了电化学信号,与空白玻碳电极相比,氧化电流增加6倍;对苯二酚在GNP/CNT/GC电极上的电化学反应:低浓度(5×10^(-5)mol/L)时对苯二酚的电极反应受扩散过程控制,而高浓度(5×10^(-4)mol/L)时对苯二酚的电极反应受吸附过程控制。此外还研究了碳纳米管用量,复合膜的层数,扫速等条件对电化学响应信号的影响。
A gold nanoparticle/carbon nanotube modified glassy carbon electrode was prepared and used to study the electrochemical behaviors of hydroquinone. The results show that gold nanoparticle/carbon nanotube modified electrode exhibits synergistic electrochemical catalytic effects of carbon nanotube and gold nanoparticles on the electrochemical reactions of hydroquinone. The reversibility of the electrochemical reaction of hydroquinone was greatly improved and the intensity of electrochemical current of hydroquinone at the modified electrode was increased 6-times compared with that at a bare electrode. In low concentration range （5×10^-5 mol/L）, electrochemical reaction was controlled by diffusion process, while in high concentration range （5 ×10^-4 mol/L ）, electrochemical reaction was controlled by adsorption process. Furthermore, the effect of the amount of carbon nanotube, the layers of composite film, and the scan rate were also studied.
出处
《安徽工业大学学报（自然科学版）》
CAS
2010年第3期281-283,共3页
Journal of Anhui University of Technology（Natural Science）
基金
安徽省教育厅自然科学基金资助项目(KJ2008B161)
关键词
金纳米粒子
碳纳米管
修饰电极
对苯二酚
gold nanoparticle
carbon nanotube
modified electrode
hydroquinone
