高等学校化学学报

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铂纳米颗粒修饰直立碳纳米管电极的葡萄糖生物传感器

赵琨, 宋海燕, 常竹, 庄淑萁, 何品刚, 方禹之   

  1. 华东师范大学化学系 上海200062
  • 收稿日期:2006-09-12 发布日期:2007-07-10
  • 通讯作者: 何品刚;方禹之 E-mail:pghe@chem.ecnu.edu.cn;yuzhi@online.sh.cn
  • 基金资助:

    国家自然科学基金(批准号:20675031);上海市科技委员会纳米专项基金(批准号:0552nm042);上海市浦江人才计划(批准号:06PJ14032)资助.

Glucose Biosensor Based on Pt Nanoparticles Modified Aligned Carbon Nanotubes Electrode

ZHAO Kun, SONG Hai-Yan, CHANG Zhu, ZHUANG Shu-Qi, HE Pin-Gang, FANG Yu-Zhi   

  1. Department of Chemistry, East China Normal University, Shanghai 200062, China
  • Received:2006-09-12 Published:2007-07-10
  • Contact: 何品刚;方禹之 E-mail:pghe@chem.ecnu.edu.cn;yuzhi@online.sh.cn
  • Supported by:

    国家自然科学基金(批准号:20675031);上海市科技委员会纳米专项基金(批准号:0552nm042);上海市浦江人才计划(批准号:06PJ14032)资助.

摘要:

基于Pt纳米颗粒修饰直立的碳纳米管电极制备了葡萄糖生物传感器.铂纳米颗粒是利用电位脉冲沉积法修饰到直立碳纳米管上的,可以增强电极对酶反应过程当中产生的过氧化氢的催化行为.用扫描电镜和透射电镜观察了直立碳纳米管在修饰Pt纳米颗粒前后的形态.该酶电极对葡萄糖的氧化表现出很好的响应,线性范围为1×10-5~7×10-3mol/L,响应时间小于5s,并且有很好的重现性. 

关键词: 直立碳纳米管 , 铂纳米颗粒 , 葡萄糖传感器 ,  , 直立碳纳米管, 铂纳米颗粒, 葡萄糖传感器

Abstract:

A sensitive amperometric glucose biosensor based on Platinum(Pt) nanoparticles modified aligned carbon nanotubes(ACNTs)electrode was investigated.Pt nanoparticles which could enhance the electrocataly-tic activity of the electrode for electrooxidating hydrogen peroxide produced with enzymatic reactions were electrocrystallized on 4-aminobenzene monolayer-grafted aligned carbon nanotubes electrode with a potential-step method.These Pt nanoparticles modified ACNTs surfaces were characterized with scanning electron microscopy(SEM) and transmission electron microscopy(TEM).The nano-scale Pt particles dispersed highly on ACNTs can be obtained.The enzyme electrode exhibitsan excellent response performance to glucose with a linear range from 1×10-5 to 7×10-3 mol/L and fast response time within 5 s.Furthermore,this glucose biosensor also has a good reproducibility.

Key words: Aligned carbon nanotubes, Pt nanoparticles, Glucose biosensor,  , Aligned carbon nanotubes, Pt nanoparticles, Glucose biosensor

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