功能化碳纳米管的电化学性质及在6-巯基嘌呤分析检测中的应用

doi:10.61558/2993-074X.1957

摘要/Abstract

摘要： 采用修饰单壁碳纳米管(SWNT、SWNT-COOH或SWNT-OH)及多壁碳纳米管(MWNT、MWNT-COOH或MWNT-OH)的石墨电极研究配位阴离子[Fe(CN)6]3-和配位阳离子[Co(phen)3]3+的电化学行为与吸附性能,借助[Co(phen)3]3+在碳纳米管(CNT)的强吸附特性制备[Co(phen)3]3+/CNT/C修饰电极,以其应用于6-MP的分析检测.结果表明:1)在CNT修饰电极上[Fe(CN)6]3-/4-呈现很好的氧化还原可逆性,而[Co(phen)3]3+则显示明显的吸附控制特征.2)[Co(phen)3]3+在多壁碳纳米管修饰电极上的吸附量较单壁碳纳米管大,但经羧基化或羟基化后,吸附量减小,而且在羧基化表面的吸附量较羟基化的大.3)[Co(phen)3]3+与6-MP间存在明显的相互作用,其配位产物的还原峰电流与6-MP浓度呈线性关系.

关键词: 碳纳米管, 6-巯基嘌呤, [Co(phen)3]3+, 电化学性质

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.

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

中图分类号:

陆宝仪, 赖艳艳, 李红, . 功能化碳纳米管的电化学性质及在6-巯基嘌呤分析检测中的应用[J]. 电化学（中英文）, 2009, 15(1): 67-73.

LU Bao-yi, LAI Yan-yan, LI Hong. Electrochemical Properties of Functionalized Carbon Nanotubes and Their Applications in Analysis of 6-mercaptopurine[J]. Journal of Electrochemistry, 2009, 15(1): 67-73.

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链接本文: https://electrochem.xmu.edu.cn/CN/10.61558/2993-074X.1957

https://electrochem.xmu.edu.cn/CN/Y2009/V15/I1/67

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