Enhanced photocatalytic reduction of Hg(II) in aqueous medium by 2-aminothiazole-modified TiO2 particles


Autoria(s): Cristante, Valtair M.; Araujo, Adriana B.; Jorge, Sônia M. A.; Florentino, Ariovaldo O.; Valente, José P. S.; Padilha, Pedro M.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

27/05/2014

27/05/2014

08/06/2006

Resumo

This work describes the synthesis and characterization of 2-aminothiazole-modified titania and its application on Hg (II) photoreduction in aqueous medium. Infrared spectroscopy confirmed the chemical modification of the titania matrix. The number of 2-aminothiazole groups attached to the titania was determined by Kjeldahl's method. The photocatalytic experiments were carried out in a cylindrical photoreactor thermostatted at 298 K. The resulting modified photocatalyst 2-aminothiazole titania (TiAT) revealed an enhance in the Hg (II) photoreduction capacity at studied pH values (3, 7 and 9). In addition, sorption studies showed that the photocatalyst TiAT presented a lower equilibrium time and a higher sorption capacity of Hg(II) ion, demonstrating that sorption plays a fundamental role in the photoreduction mechanism. ©2006 Sociedade Brasileira de Química.

Formato

453-457

Identificador

http://dx.doi.org/10.1590/S0103-50532006000300004

Journal of the Brazilian Chemical Society, v. 17, n. 3, p. 453-457, 2006.

0103-5053

http://hdl.handle.net/11449/68919

10.1590/S0103-50532006000300004

S0103-50532006000300004

WOS:000237738400004

2-s2.0-33744733360

2-s2.0-33744733360.pdf

Idioma(s)

eng

Relação

Journal of the Brazilian Chemical Society

Direitos

openAccess

Palavras-Chave #2-aminothiazole #3- chloropropyltrimethoxysilane #Photocatalysis #TiO2
Tipo

info:eu-repo/semantics/article