Photoelectrocatalytical degradation of basic blue 41 dye using nanoporous semiconductor of Ti/TiO2
Nenhuma Miniatura disponível
Data
2009-01-01
Autores
Fraga, L. E. [UNESP]
Zanoni, M. V.B. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Resumo
The present work investigates the photoelectrocatalytical degradation Basic Blue 41 (BB 41) largely applied to dye synthetic fibers, using a semiconductor Ti/TiO2as photoanode. 100% of degradation of 8.33 10-5mol L-1dye in 0.1 mol L-1Na2SO4, pH 2 was obtained under current density of 0.40 mA cm-2and irradiation UV after 60 min of treatment and 80% of total organic carbon removal. The oxidation follows pseudo-first order reaction with initial rate constant of -0, 040 mim-1and a current efficiency of 51%. The results are superior the conventional photocatalysis in the same conditions without the polarization of the photoanode that takes to 65% of mineralization under initial rate constant -0, 024 min-1
Descrição
Palavras-chave
Basic blue 41, Dye treatment, Photocatalysis, Photoelectricatalysis, Ti/TiO2
Como citar
Ecletica Quimica, v. 34, n. 4, p. 27-36, 2009.