Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Removal of phenanthrene in aqueous solution containing photon competitors by TiO2–C–Ag film supported on fiberglass
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+.
Removal of phenanthrene in aqueous solution containing photon competitors by TiO2–C–Ag film supported on fiberglass
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+.
Removal of phenanthrene in aqueous solution containing photon competitors by TiO2–C–Ag film supported on fiberglass
González-Ramírez, Denisse Fabiola (Autor:in) / Ávila-Pérez, Pedro (Autor:in) / Torres-Bustillos, Luis G. (Autor:in) / Aguilar-López, Ricardo (Autor:in) / Montes-Horcasitas, María C. (Autor:in) / Esparza-García, Fernando J. (Autor:in) / Rodríguez-Vázquez, Refugio (Autor:in)
Journal of Environmental Science and Health, Part A ; 52 ; 742-749
03.07.2017
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Phenanthrene Removal from Aqueous Solution on Sesame Stalk‐based Carbon
| Online Contents | 2012
Photodegradation of phenanthrene by N-doped TiO2 photocatalyst
| Online Contents | 2009
Fiberglass Mesh Reinforced Rendering Mortar: Effect of Fiberglass Reinforcement
| Springer Verlag | 2023