Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 10, Issue 2, Pages 306-310Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2007.12.011
Keywords
horseradish peroxidase; direct electrochemistry; multiwalled carbon nanotubes; gold nanoparticles
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Horseradish peroxidase (HRP) was incorporated into multiwalled carbon nanotube/thionine/Au (MTAu) composite film by electrostatic interactions between positively charged HRP and negatively charged MTAu composite. The results of electrochemical impedance spectroscopy (EIS) confirmed adsorption of HRP on the surface of MTAu modified GC electrode. Moreover, the electrochemical results showed that HRP retained its bioactivity and bioelectrocatalytical activity, and also showed good direct electron transfer behavior on such a composite film. (c) 2007 Elsevier B.V. All rights reserved.
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