高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (5): 811.

• 研究快报 • 上一篇    下一篇

α-环糊精复合碳纳米管电极对异构体的电催化行为

王宗花1,2, 罗国安1, 肖素芳1,2, 王歌云1   

  1. 1. 清华大学化学系, 北京 100084;
    2. 青岛大学化学系, 青岛 266071
  • 收稿日期:2002-12-11 出版日期:2003-05-24 发布日期:2003-05-24
  • 通讯作者: 罗国安(1946年出生),男,教授,博士生导师,从事生命分析化学方面的研究.E-mail:galuo@chem.tsinghua.edu.cn E-mail:galuo@chem.tsinghua.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:20075015)

Electrocatalitic Behavior of Nitrophenol Isomers at α-Cyclodextrin Incorporated Carbon Nanotubes-coated Electrode

WANG Zong-Hua1,2, LUO Guo-An1, XIAO Su-Fang1,2, WANG Ge-Yun1   

  1. 1. Department of Chemistry, Tsinghua University, Beijing 100084, China;
    2. Department of Chemistry, Qingdao University, Qingdao 266071, China
  • Received:2002-12-11 Online:2003-05-24 Published:2003-05-24

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摘要： 对异构体的测定与分离一直是化学家感兴趣的课题.硝基酚在环境样品检测中的重要性促进了其定性定量测定方法的发展.Umezawa等基于亲脂性的脂肪胺和杂环芳香胺类,首次制成了用于中性化合物的电位传感器;Piotrowski等制备出杯[4]吡咯液膜电极,此电极对p-硝基酚有选择性,并进一步研究了杯[4]吡咯的对称性对该修饰电极的灵敏度和选择性的影响.我们将碳纳米管(CNT).

关键词: 碳纳米管, &alpha, -环糊精, 修饰电极, 硝基酚异构体, 电化学行为

Abstract: In this article, based on providing a new interfacial architecture that involves carbon nanotubes (CNT) and a-cyclodextrin(a-CD), we constructed a novel modified electrode by casting a-CDincorporated carbon nanotubes on the graphite surface to form a functional stereoscopic interfacial layer. The modified electrodes first showed a favorable behavior toward the reduction of nitrophenol isomers. The attractiveness of this modified electrode is the capitalization on the best properties of the two components of the system, such as the electronic and catalytic properties of the CNT and the molecular recognition ability of the a-CD. The selective determination of p-nitrophenol could be obtained by the separation of its reductive peak from that of other nitophenol isomers. Adifferent pulse voltammetric technique for measurement of p-nitrophenol over the range of 1 × 10-6to 3 × 10-4mol/Lhas been developed. The detection limit was 2×10-7mol/L.

Key words: Carbon nanotube, a-Cyclodextrin, Modified electrode, Nitrophenol isomers, Electrocatalytic behavior

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