Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 48, Issue -, Pages 270-278Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2014.12.034
Keywords
Iodate; Nitrite; Polyethyleneimine; Gold nanoparticles; Electrocatalytic reduction
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Funding
- Khorramabad Branch, Islamic Azad University
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The polyethyleneimine (PEI) wrapped multi-walled carbon nanotubes functionalized with a carboxylic acid group (CNTs-COOH) gold nanoparticle (AuNP)-modified gold (Au) electrode has been utilized as a platform to immobilize organoruthenium(II) complexes (ORC). The surface structure and composition of the sensor were characterized by scanning electron microscopy (SEM). Electrocatalytic reduction of iodate and nitrite on the surface of modified electrode was investigated with cyclic voltammetry, electrochemical impedance spectroscopy (EIS) and hydrodynamic voltammetry methods. The cyclic voltammetric results indicated the ability of AuNPs/PEI/CNT-COOH/ORC modified Au electrode to catalyze the reduction of this compound. AuNPs/PEI/CIVTs-COOH nanocomposite combined the advantages of PEI-well dispersed CNTs-COOH and in situ formed AuNPs. (C) 2014 Elsevier B.V. All rights reserved.
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