Titania–Silica Materials for Enhanced Photocatalysis
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Título: | Titania–Silica Materials for Enhanced Photocatalysis |
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Autor/es: | Rico Santacruz, Marisa | Serrano, Elena | Marcì, Giuseppe | García-López, Elisa I. | Garcia-Martinez, Javier |
Grupo/s de investigación o GITE: | Laboratorio de Nanotecnología Molecular (NANOMOL) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica |
Palabras clave: | Organosilane | Photocatalysis | Propylene epoxidation | Sol–gel process | Titania-silica |
Área/s de conocimiento: | Química Inorgánica |
Fecha de publicación: | 7-dic-2015 |
Editor: | Wiley-VCH Verlag GmbH & Co. KGaA |
Cita bibliográfica: | Chemistry - A European Journal. 2015, 21(50): 18338–18344. doi:10.1002/chem.201502569 |
Resumen: | Mesoporous titania–organosilica nanoparticles comprised of anatase nanocrystals crosslinked with organosilica moieties have been prepared by direct co-condensation of a titania precursor, tetrabuthylortotitanate (TBOT), with two organosilica precursors, 1,4-bis(triethoxysilyl) benzene (BTEB) and 1,2-bis(triethoxysilyl) ethane (BTEE), in mild conditions and in the absence of surfactant. These hybrid materials show both high surface areas (200–360 m2 g−1) and pore volumes (0.3 cm3 g−1) even after calcination, and excellent photoactivity in the degradation of rhodamine 6G and in the partial oxidation of propene under UV irradiation, especially after the calcination of the samples. During calcination, there is a change in the TiIV coordination and an increase in the content of Si[BOND]O[BOND]Ti moieties in comparison with the uncalcined materials, which seems to be responsible for the enhanced photocatalytic activity of hybrid titania–silica materials as compared to both uncalcined samples and the control TiO2. |
Patrocinador/es: | The authors wish to thank the Spanish MINECO (Projects CTQ2014-60017-R and CTQ2011-28954-C02-01) for financial support. E.S. acknowledges financial support from Iberdrola Foundation (F.IBERDROLA14-01) and M.R. is grateful for a mobility grant for Ph.D. students from the UA (IUMA). |
URI: | http://hdl.handle.net/10045/53833 |
ISSN: | 0947-6539 (Print) | 1521-3765 (Online) |
DOI: | 10.1002/chem.201502569 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1002/chem.201502569 |
Aparece en las colecciones: | INV - NANOMOL - Artículos de Revistas |
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2015_Rico_etal_ChemEurJ_final.pdf | Versión final (acceso restringido) | 1,13 MB | Adobe PDF | Abrir Solicitar una copia |
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