多壁碳纳米管修饰电极对3,4-二羟基苯乙酸的电催化作用  

Electrocatalytic Oxidation of 3,4-Dihdroxyphenylacetic Acid at Modified Glass Carbon Electrode of Multi-Wall Nanotubes

作　　者：沈家庭[1] 李将渊[1] 王玉春[1] 唐自龙[1] 

机构地区：[1]西华师范大学化学系,四川南充637002

出　　处：《西华师范大学学报（自然科学版）》2004年第2期185-188,共4页Journal of China West Normal University(Natural Sciences)

摘　　要：制备了多壁碳纳米管修饰电极,实验发现该电极对3,4 二羟基苯乙酸(DOPAC)有明显的电催化作用,其氧化电位负移105mV,峰电流显著增加,实验表明DOPAC浓度在5.0×10-6-2.0×10-3moL/dm3范围内,其浓度与峰电流有良好的线性关系,检测下限达2.0×10-6moL/dm3,一些常见的共存物质对其测定无干扰,且稳定性和重现性好.The preparation and electrochemical behaviors of electrode modified by multi-wall carbon nanotubes have been described in this paper. The electrode has strong electrocatalytic effect on the oxidation of DOPAC.The anodic peak potential of catechol shifts negatively by 105mV. The peak current is proportional to the DOPAC content ration in the range of 5.0×10^(-6)-2.0×10^(-3) moL/dm^3,and the detect limit can reach 2.0×10^(-6) moL/dm^3.The modified electrode shows good stability and reproductibility.

关 键 词：多壁碳纳米管修饰电极 3 4-二羟基苯乙酸 电化学催化 羧基化 纳米材料 

分 类 号：TB383[一般工业技术—材料科学与工程] O646.54[理学—物理化学]