Electrochemical Properties of Functionalized Carbon Nanotubes and Their Applications in Analysis of 6-mercaptopurine

Authors

Bao-yi LU, School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China;
Yan-yan LAI, School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China;
Hong LI, School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China;

Abstract

The electrochemical behaviors and adsorption properties of single-walled carbon nanotubes such as SWNT,SWNT-COOH,and SWNT-OH and multi-walled carbon nanotubes including MWNT,MWNT-COOH,and MWNT-OH modified at a graphite electrode have been investigated by using [Fe(CN)6]3-anion and [Co(phen)3]3+ cation.It was shown that shows good redox reversibility of [Fe(CN)6]3-/4-reactions on the existed carbon nanotubes(CNT) modified electrode.Based on the strong adsorptive property of [Co(phen)3]3+ on the CNT surface,the [Co(phen)3]3+/CNT modified graphite electrode can be obtained by progressive potential sweeping and developed to monitor quantitatively 6-mercaptopurine(6-MP).The adsorption capacity of [Co(phen)3]3+ on the multi-walled carbon nanotubes is higher than that of single-walled carbon nanotubes.For the carbon nanotubes with carboxylic or hydroxyl functionalized groups(CNT-COOH or CNT-OH),the adsorbed intensity was weakened,where the adsorptive intensity on the CNT-COOH surface was better.In addition,there was an obvious interaction between [Co(phen)3]3+ and 6-MP.6-MP was detected by monitoring the reductive current values of the [Co(phen)3]3+-6-MP complex generated by the interaction of [Co(phen)3]3+ on the CNT modified graphite electrode with 6-MP.

Keywords

carbon nanotubes, 6-mercaptopurine, cobalt(III) complexes, electrochemical properties

DOI Link

https://doi.org/10.61558/2993-074X.1957

Publication Date

2009-02-28

Online Available Date

2009-02-28

Revised Date

2009-02-28

Received Date

2009-02-28

Recommended Citation

Bao-yi LU, Yan-yan LAI, Hong LI. Electrochemical Properties of Functionalized Carbon Nanotubes and Their Applications in Analysis of 6-mercaptopurine[J]. Journal of Electrochemistry, 2009 , 15(1): 67-73.
DOI: 10.61558/2993-074X.1957
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss1/16