Carbon nanotube/polysulfone composite screen-printed electrochemical enzyme biosensors
Literature Information
Publication Date
2006-11-09
DOI
10.1039/B609137G
Impact Factor
4.616
Authors
Samuel Sánchez, Martin Pumera, Enric Cabruja, Esteve Fàbregas
View Original
Abstract
The fabrication, evaluation and attractive performance of multiwall carbon nanotube(MWCNT)/polysulfone biocomposite membrane modified thick-film screen-printed electrochemical biosensors are reported. The fabricated carbon nanotube/polysulfone (CNT/PS) strips combine the attractive advantages of carbon nanotube materials, polysulfone matrix and disposable screen-printed electrodes. Such thick-film carbon nanotubes/polysulfone sensors have a well defined performance, are mechanically stable, and exhibit high electrochemical activity. Furthermore, biocompatibility of CNT/PS composite allows easy incorporation of biological functional moiety of horseradish peroxidase by phase inversion technique. The comparison of graphite with MWCNT as conductor material is described in this paper. The proposed H2O2 biosensor exhibited a linear range (applied potential, −0.2 V) from 0.02 to 0.5 mM and a KMapp of 0.71 mM.
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