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Removal of phenanthrene in aqueous solution containing photon competitors by TiO2-C-Ag film supported on fiberglass.
González-Ramírez, Denisse Fabiola; Ávila-Pérez, Pedro; Torres-Bustillos, Luis G; Aguilar-López, Ricardo; Montes-Horcasitas, María C; Esparza-García, Fernando J; Rodríguez-Vázquez, Refugio.
Afiliación
  • González-Ramírez DF; a Department of Biotechnology and Bioengineering , Research Center and Advanced Studies of the National Polytechnic Institute , Mexico City , México.
  • Ávila-Pérez P; b National Institute of Nuclear Research, Direction of Technological Research , State of Mexico , México.
  • Torres-Bustillos LG; c Department of Bioprocesses, Interdisciplinary Professional Unit of Biotechnology , National Polytechnic Institute , Mexico City , México.
  • Aguilar-López R; a Department of Biotechnology and Bioengineering , Research Center and Advanced Studies of the National Polytechnic Institute , Mexico City , México.
  • Montes-Horcasitas MC; a Department of Biotechnology and Bioengineering , Research Center and Advanced Studies of the National Polytechnic Institute , Mexico City , México.
  • Esparza-García FJ; a Department of Biotechnology and Bioengineering , Research Center and Advanced Studies of the National Polytechnic Institute , Mexico City , México.
  • Rodríguez-Vázquez R; a Department of Biotechnology and Bioengineering , Research Center and Advanced Studies of the National Polytechnic Institute , Mexico City , México.
J Environ Sci Health A Tox Hazard Subst Environ Eng ; 52(8): 742-749, 2017 Jul 03.
Article en En | MEDLINE | ID: mdl-28394702
Surface interactions with pollutants and photons are key factors that affect the applications of TiO2 in environmental remediation. In this study, the solubilizing agents dimethylsulfoxide and polyoxyethylene sorbitan monooleate, which act as photon competitors, had no effect on the photocatalytic activity of TiO2-C-Ag film in phenanthrene (PHE) removal. Fiberglass with TiO2-C-Ag coating removed 91.1 ± 5.2 and 99.7 ± 0.4% of PHE in treatments using UVA (365-465 nm) and UVC (254 nm) irradiation, respectively. The use of fiberglass as a support increased the superficial area, thus allowing PHE sorption. C and Ag, which are electrically active impurities in TiO2, enhanced its photocatalytic activity and thus the attraction of the pollutant to its surface. The use of high-frequency UV light (UVC) decreased the amount of carbon species deposited on the TiO2CAg film surface. X-ray photoelectron spectroscopy of the TiO2-C-Ag film revealed extensive oxidation of the carbon deposited on the film under UVC light and loss of electrons from Ag clusters by conversion of Ag0 to Ag3+.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fenantrenos / Plata / Titanio / Contaminantes Químicos del Agua / Carbono / Purificación del Agua / Vidrio Idioma: En Revista: J Environ Sci Health A Tox Hazard Subst Environ Eng Asunto de la revista: TOXICOLOGIA Año: 2017 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fenantrenos / Plata / Titanio / Contaminantes Químicos del Agua / Carbono / Purificación del Agua / Vidrio Idioma: En Revista: J Environ Sci Health A Tox Hazard Subst Environ Eng Asunto de la revista: TOXICOLOGIA Año: 2017 Tipo del documento: Article Pais de publicación: Reino Unido