Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 9, Issue 12, Pages 2812-2816Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2007.09.021
Keywords
magnetic assembly; carbon nanotubes; Fe2O3 nanoparticles; electrochemistry
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A novel electrochemical nanostructured biosensor based on carbon nanotubes (CNTs) has been constructed by magnetic assembly method. The magnetic multi-walled carbon nanotubes (M-MWNTs) were prepared by introducing Fe2O3 nanoparticles into the nanotubes. Thus the multilayered functional platform could be assembled with the aid of magnetic field. The horseradish peroxidase (HRP) was employed as a model enzyme to demonstrate the final performance of the nanostructured biosensor. SEM, UV-vis spectroscopy and electrochemical techniques were used for characterization of assembly process. The resulting three-dimensional M-MWNTs/HRP multilayer films have showed satisfactory stability, biocompatibility and electrochemical properties. (C) 2007 Elsevier B.V. All rights reserved.
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