Synthesis and characterization of TiO2 chemically modified by Pd(II) 2-aminothiazole complex for the photocatalytic degradation of phenol
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Data
2008-03-05
Autores
Cristante, Valtair M. [UNESP]
Prado, Alexandre G. S.
Jorge, Sonia M. A. [UNESP]
Valente, Jose P. S. [UNESP]
Florentino, Ariovaldo O. [UNESP]
Padilha, Pedro M. [UNESP]
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Editor
Elsevier B.V. Sa
Resumo
An investigation was made into the photocatalytic activity of in situ synthesized TiO2 chemically modified by Pd(II) 2-aminothiazole complex for phenol degradation at different pH values. At longer reaction times, the bare titania presented far poorer pbotoactivity than the modified catalysts in the entire range of pH studied. The catalyst complexed with Pd(II) was more efficient than the metal-free Pd, irrespective of pH and reaction time, suggesting that metal plays an important role. A cooperative mechanism is proposed, involving the possible photoactivation of both TiO2 and sensitizer. (C) 2007 Elsevier B.V. All rights reserved.
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Pd(II) 2-aminothiazole, TiO2, phenol photodegradation, photosensitization
Como citar
Journal of Photochemistry and Photobiology A-chemistry. Lausanne: Elsevier B.V. Sa, v. 195, n. 1, p. 23-29, 2008.