Bernardes, Arthur AlaimBulhosa, Maria Carolina SalumGonçalves, Fábio FerreiraD'Oca, Marcelo Gonçalves MontesWolke, Silvana InêsSantos, João Henrique Zimnoch dos2012-01-172012-01-172011BERNARDES, Arthur Alaím et al. Materiais SIO2 - TIO2 para a degradação fotocatalítica de Diuron. Química Nova, São Paulo, v. 34, n. 8, p.1343-1348, 2011. Disponível em: <www.scielo.br/pdf/qn/v34n8/09.pdf>. Acesso em: 05 jan. 2012.http://repositorio.furg.br/handle/1/1757SiO2-TiO2 materials prepared by sol-gel method were evaluated in the photocatalytic degradation of diuron. The materials were prepared with and without surfactant cetyltrimethylammonium chloride at different temperatures (25, 50 and 100 oC). The samples were characterized by N2 adsorptiondesorption measurements, scanning electron microscopy, X-ray diffraction, ultraviolet-visible diffuse reflectance spectroscopy and infrared diffuse reflectance spectroscopy. The results showed that the materials synthesized with the surfactant had higher surface areas and band-gap values similar to anatase. All materials were more active than the commercial catalyst P-25 and better performance was achieved using the surfactant in the material synthesis.poropen accessPhotocatalysisSol-gel methodDiuronarticle