Title of article
Glucose biosensor based on glucose oxidase and gold nanoparticles of different sizes covered by polypyrrole layer
Author/Authors
German، نويسنده , , Natalija and Ramanavicius، نويسنده , , Arunas and Voronovic، نويسنده , , Jaroslav and Ramanaviciene، نويسنده , , Almira، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2012
Pages
7
From page
224
To page
230
Abstract
Different glucose biosensors based on glucose oxidase (GOx) immobilised on bare carbon rod electrode (CR) modified with gold nanoparticles (Au-NPs) of (i) 3.5 nm (GOx/3.5Au-NPs/CR), (ii) 6 nm (GOx/6Au-NPs/CR) and (iii) 13 nm (GOx/13Au-NPs/CR) were investigated and compared with biosensors based on GOx immobilised on bare CR (GOx/CR). Enzymatic polymerisation of pyrrole was applied to increase linear detection range of biosensors. The influence of the formed polypyrrole layer on sensitivity and Michaelis–Menten kinetics of designed electrochemical biosensors was investigated. The linear glucose detection interval for GOx/CR and GOx/Au-NPs/CR electrodes was dependent on the duration of polymerisation.
Keywords
Gold nanoparticles , Glucose oxidase , Biosensor , Amperometry , Carbon rod electrode , Electron transfer
Journal title
Colloids and Surfaces A Physicochemical and Engineering Aspects
Serial Year
2012
Journal title
Colloids and Surfaces A Physicochemical and Engineering Aspects
Record number
1943157
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