Immobilized organoruthenium(II) complexes onto polyethyleneimine-wrapped carbon nanotubes/in situ formed gold nanoparticles as a novel electrochemical sensing platform.
Mater Sci Eng C Mater Biol Appl
; 48: 270-8, 2015 Mar.
Article
em En
| MEDLINE
| ID: mdl-25579923
ABSTRACT
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/CNTs-COOH nanocomposite combined the advantages of PEI-well dispersed CNTs-COOH and in situ formed AuNPs.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Polietilenoimina
/
Rutênio
/
Nanotubos de Carbono
/
Nanopartículas
/
Técnicas Eletroquímicas
Idioma:
En
Revista:
Mater Sci Eng C Mater Biol Appl
Ano de publicação:
2015
Tipo de documento:
Article