ZnO electrodeposition onto gold from recordable compact discs and its use as photocatalyst under solar irradiation

AUTOR(ES)

Silva, L. J. Venturini da, Foletto, E. L., Dorneles, L. S., Paz, D. S., Frantz, T. S., Gündel, A.

FONTE

Braz. J. Chem. Eng.

DATA DE PUBLICAÇÃO

2013-03

RESUMO

A ZnO film was electrodeposited onto a gold substrate obtained from a recordable compact disc and tested as photocatalyst in degradation of dye in aqueous solution. X-ray diffractometry and atomic force microscopic analysis showed a pure ZnO phase with particle sizes in the nanometric scale. The results showed that the photocatalytic activity of the film is significant, with more than 90 % degradation of the dye in under 6 h sunlight irradiation. The photocatalytic process in sunlight follows first-order kinetics.

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