Publicação

Enzyme immobilization on Ag nanoparticles/polyaniline nanocomposites.

Detalhes bibliográficos
Resumo:	The performance of the modified electrodes toward urea hydrolysis was investigated via amperometric measurements, revealing a fast increase in cathodic current with a well-defined peak upon addition of urea to the electrolytic solution. The cathodic currents for the ITO/PAni/PVA–AgNP/urease electrodes were significantly higher than for the ITO/PAni/urease electrodes. The friendly environment provided by the ITO/PAni/PVA–AgNP electrode to the immobilized enzyme promoted efficient catalytic conversion of urea into ammonium and bicarbonate ions. Using the Michaelis–Menten kinetics equation, a KM app of 2.7mmolL−1 was obtained, indicating that the electrode architecture employedmay be advantageous for fabrication of enzymatic devices with improved biocatalytic properties.
Autores principais:	Crespilho, Frank Nelson
Outros Autores:	Iost, Rodrigo Michelin; Travain, Silmar Antonio; Oliveira Junior, Osvaldo Novais de; Zucolotto, Valtencir
Assunto:	Silver nanocomposite Urease Polyaniline Enzyme immobilization Bioelectrochemistry
Ano:	2015
País:	Brasil
Tipo de documento:	artigo
Tipo de acesso:	unknown
Instituição associada:	IBICT
Idioma:	inglês
Origem:	Oasisbr

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