✦ LIBER ✦

Amperometric Glucose Biosensor Based on Platinum Nanoparticles Combined Aligned Carbon Nanotubes Electrode

✍ Scribed by Kun Zhao; Shuqi Zhuang; Zhu Chang; Haiyan Songm; Liming Dai; Pingang He; Yuzhi Fang

Publisher: John Wiley and Sons
Year: 2007
Tongue: English
Weight: 167 KB
Volume: 19
Category: Article
ISSN: 1040-0397
DOI: 10.1002/elan.200603823

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A sensitive amperometric glucose biosensor based on platinum nanoparticles (PtNPs) combined aligned carbon nanotubes (ACNTs) electrode was investigated. PtNPs which can enhance the electrocatalytic activity of the electrode for electrooxidating hydrogen peroxide by enzymatic reaction were electrocrystallized on 4‐aminobenzene monolayer‐grafted ACNTs electrode by potential‐step method. These PtNPs combined ACNTs' (PtNPs/ACNTs) surfaces were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The highly dispersed PtNPs on ACNTs can be obtained. The enzyme electrode exhibits excellent response performance to glucose with linear range from 1×10^−5^–7×10^−3^ mol L^−1^ and fast response time within 5 s. Furthermore, this glucose biosensor also has good reproducibility. It is demonstrated that the PtNPs/ACNTs electrode with high electrocatalytic activity is a suitable basic electrode for preparing enzyme electrodes.

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