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Title

Effect of TiO2-Pd and TiO2-Ag on the photocatalytic oxidation of diclofenac, isoproturon and phenol

AuthorsEspino-Estévez, M. R.; Fernández-Rodríguez, Cristina; González-Díaz, Óscar M.; Araña, J.; Espinós, J.P. ; Doña-Rodríguez, J. M.
KeywordsTiO2–Ag
Phenol
Isoproturon
Diclofenac
Photodeposition
iO2–Pd
Issue Date2016
PublisherElsevier
CitationChemical Engineering Journal 298: 82- 95 (2016)
AbstractThe effects of silver and palladium metals on the photocatalytic degradation of diclofenac sodium salt (DCF), isoproturon (IP) and phenol (PHL) in water over lab-made TiO synthesized following a sol-gel method were investigated. Silver and palladium catalysts were prepared by photodeposition at 1 wt.% of loading metal. The resulting materials were characterized through BET, XRD, TEM, SEM, XPS and DRS-UV-Vis. The photodeposition test conditions of both metals determined their final oxidation state, with reduced particles of palladium and silver as well as silver oxides found on the catalysts. The results showed that the type of metal had different effects on the photodegradation mechanism depending on the nature of the pollutants. Accordingly, the highest degradation rate for IP and DCF was obtained when using the catalyst photodeposited with palladium and for PHL the catalyst photodeposited with silver. The photodegradation intermediates of PHL, DCF and IP were also identified.
URIhttp://hdl.handle.net/10261/148648
DOI10.1016/j.cej.2016.04.016
Identifiersdoi: 10.1016/j.cej.2016.04.016
issn: 1385-8947
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