SÍNTESE E CARACTERIZAÇÃO DE COMPÓSITOS ORGÂNICO-INORGÂNICOS MACROPOROSOS PARA O SENSORIAMENTO DE H2O2

AUTOR(ES)

Santos, Juliana L., Gonçales, Vinicius R., Cintra, Elaine P., Torresi, Susana I. Córdoba de

FONTE

Quím. Nova

DATA DE PUBLICAÇÃO

2015-02

RESUMO

Electrodes modified with poly(5-amino-1-naphthol)/Prussian blue (poly(5-NH2-1-NAP)/PB) hybrid films are able to electrochemically reduce H2O2 in medium containing an excess of Na+ cations. This is an important advantage for biosensing applications over electrodes in which only conventionally (electro) deposited Prussian blue is present. Consequently, the aim of this work was to examine the application of templates of ordered arrays of colloidal poly(styrene) spheres (800, 450 and 100 nm in diameter) to produce inverse opal structures of poly(5-NH2-1-NAP)/PB hybrid platforms, in an effort to study the influence of the increase in surface area/volume ratio and higher exposition of the mediator active sites on material performance during H2O2 determination employing the different sized porous structures. Moreover, since the accentuated hydrophilic character of poly(5-NH2-1-NAP)/PB also allows H2O2 electrochemical reduction in inner active sites, issues concerning the amount of mediator electrodeposited on the electrode were also reflected in the observed results.

Documentos Relacionados

• Aplicação de contatos organico-inorganicos para caracterização de semicondutores
• Filmes híbridos orgânico-inorgânicos baseados em óleo de mamona funcionalizado
• Membranas polimericas preparadas a partir de materiais hibridos organico-inorganicos
• Filmes híbridos orgânico-inorgânicos a partir de óleo de soja funcionalizado
• Síntese de um silsesquioxano derivado do ácido tereftálico e seu uso na preparação de híbridos orgânico-inorgânicos fluorescentes