Este artigo foi apresentado no evento 8th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications (SPEA), 2014

Agradecimentos: The authors wish to thank the Brazilian funding agencies CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico), CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior), FUNDECT (Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado...

Agradecimentos: The authors wish to thank the Brazilian funding agencies CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico), CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior), FUNDECT (Fundação de Apoio ao Desenvolvimento do Ensino, Ciência e Tecnologia do Estado de Mato Grosso do Sul) and INCT-EMA (Instituto Nacional de Ciência e Tecnologia de Estudos do Meio Ambiente). The authors also thank the Ministry of Science and Innovation of Spain (projects CTQ2011-26258 and NOVEDAR 2010 CSD2007-00055) and AGAUR (project 2009SGR 1466) for funds received

Abstract: Pure and B-doped TiO2 photocatalysts were synthesized by sol-gel method. Boric acid was used as boron source and titanium tetra-isopropoxide as TiO2 precursor. Nominal boron/titania proportions were in the range 0-9% (w/w). The powder was characterized by X-ray diffraction (XRD), scanning...

Abstract: Pure and B-doped TiO2 photocatalysts were synthesized by sol-gel method. Boric acid was used as boron source and titanium tetra-isopropoxide as TiO2 precursor. Nominal boron/titania proportions were in the range 0-9% (w/w). The powder was characterized by X-ray diffraction (XRD), scanning and transmission electron microscopy (SEM and TEM), UV-vis absorption spectra, BET specific surface area, X-ray photoelectron spectroscopy (XPS) and zeta potential. The ß-blockers are pharmaceuticals frequently detected in waters. Among these ß-blockers, metoprolol (MET) is one of the most commonly used for the treatment of a variety of cardiovascular diseases, thus being necessary the search for methods able to remove it. In this context, the photocatalytic reactivity of the synthesized catalysts was evaluated by its use in MET photodegradation using a solar simulator with xenon lamp as irradiation source. Results showed that the 5% (w/w) B-doped TiO2 exhibited greater photodegradation (70% MET removal) than pure TiO2 (48% MET removal). Some factors were responsible for the photocatalytic performance of B-doped TiO2 which include the high surface area, mesoporous structure, anatase-rutile crystalline structure, formation of Ti(III), introduction of boron as a B-O-Ti species and uniformity in particles surface size

CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ

COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES

FUNDAÇÃO DE APOIO AO DESENVOLVIMENTO DO ENSINO, CIÊNCIA E TECNOLOGIA DO ESTADO DE MATO GROSSO DO SUL - FUNDECT

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