Glucose Biosensor Based on Pt Nanoparticles Modified Aligned Carbon Nanotubes Electrode

Chem. J. Chinese Universities

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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

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.

Abstract

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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ZHAO Kun, SONG Hai-Yan, CHANG Zhu, ZHUANG Shu-Qi, HE Pin-Gang, FANG Yu-Zhi. Glucose Biosensor Based on Pt Nanoparticles Modified Aligned Carbon Nanotubes Electrode[J]. Chem. J. Chinese Universities.

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Glucose Biosensor Based on Pt Nanoparticles Modified Aligned Carbon Nanotubes Electrode

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