期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 93, 期 -, 页码 543-546出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2016.09.016
关键词
Hyperbranched; Chitosan nanoparticles; Chemically modified electrodes; Electrochemical characterizations
The present study reports, for the first time, the development and use of core-shell amino-terminated chitosan (Cs) hyperbranched nanoparticles (HBCs-NH2 NPs) as a novel natural polymer-based electrode modifier for efficient electrochemical systems. The electrochemical activity of the developed HBCs-NH2 NPs as compared to Cs NPs was identified by standard oxidation-reduction reactions of ferricyanide. The oxidation-reduction peaks height was about twofold higher than the response of Cs-modified electrode. On the other hand, NADH oxidation at the nanostructured surfaces confirmed the electrocatalytic activity where the oxidation of NADH appeared at a lower overpotential (from 805 mV to 635 mV vs Ag/AgCl). Eventually, a diffusion-controlled process was confirmed from the scan rate effect. (C) 2016 Elsevier B.V. All rights reserved.
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