Artículos de revistas
Synthesis And Characterization Of B-doped Tio2 And Their Performance For The Degradation Of Metoprolol
Registro en:
Synthesis And Characterization Of B-doped Tio2 And Their Performance For The Degradation Of Metoprolol. Elsevier Science Bv, v. 252, p. 27-34 SEP-2015.
0920-5861
WOS:000355215200006
10.1016/j.cattod.2014.09.030
Autor
Cavalcante
Rodrigo Pereira; Dantas
Renato Falcao; Bayarri
Bernardi; Gonzalez
Oscar; Gimenez
Jaime; Esplugas
Santiago; Machulek Junior
Amilcar
Institución
Resumen
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 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 beta-blockers are pharmaceuticals frequently detected in waters. Among these beta-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. (C) 2014 Elsevier B.V. All rights reserved. 252
27 34 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) FUNDECT (Fundacao de Apoio ao Desenvolvimento do Ensino, Ciencia e Tecnologia do Estado de Mato Grosso do Sul) INCT-EMA (Instituto Nacional de Ciencia e Tecnologia de Estudos do Meio Ambiente) Ministry of Science and Innovation of Spain [CTQ2011-26258, CSD2007-00055] AGAUR [2009SGR 1466] Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)