%0 Journal Article
%T ELECTROANALYTICAL APPLICATIONS OF CARBOXYL-MODIFIED CARBON NANOTUBE FILM ELECTRODES
%A CGHu[]
%A WLWang[]
%A KJLiao[]
%A WZhu[]
%A <br>C.G. Hu
%A W.L. Wang
%A K.J. Liao and W.Zhu
%J 金属学报(英文版)
%D 2003
%I 
%X The electrochemical behavior of a carboxyl-modified carbon nanotube films was investigated to explore its possibility in electroanalytical applicaton. Cyclic voltammetry of quinone was conducted in 1mol/L Na2SO4, which showed a stable, quasi-reversible voltammetric response for quinone / hydroquinone, and the anodic and the cathodic peak potentials were 0.657V and -0.029V (vs. SCE) at a scan rate of 0.1V.s-1, respectively. Both anodic and cathodic peak currents depended linearly on the square root of the scan rate over the range of 0.01-0.5V.s-1, which suggested that the process of the electrode reactions was diffusion-controlled. Carboxyl-modified carbon nanotube electrodes made it possible to determine low level of dopamine selectively in the presence of a large excess of ascorbic acid in acidic media using derivative voltammetry. The results obtained were discussed in details. This work demonstrates the potential of carboxyl-modified carbon nanotube electrodes for electroanalytical applications.
%K carbon nanotube
%K electrochemistry
%K carboxyl modification
%K dopamine<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=C19B08D052F5FD8445F4BB80A1A5D7BF&aid=E89A85433D7F8676217B23E5B803C53A&yid=D43C4A19B2EE3C0A&vid=7801E6FC5AE9020C&iid=E158A972A605785F&sid=F50A8B5513721E1C&eid=E39A3F4E3A67639B&journal_id=1006-7191&journal_name=金属学报(英文版)&referenced_num=2&reference_num=18