Article (Scientific journals)
Sol-gel syntheses of photocatalysts for the removal of pharmaceutical products in water
Belet, Artium; Wolfs, Cédric; Mahy, Julien et al.
2019In Nanomaterials, 9, p. 126
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Keywords :
TiO2; photocatalysis; sol-gel process; thin films; pharmaceutical products
Abstract :
[en] A screening study on seven photocatalysts was performed to identify the best candidate for pharmaceutical products degradation in water. Photocatalysts were deposited as thin films through a sol-gel process and subsequent dip-coating on glass slides. The efficiency of each photocatalyst was assessed through the degradation of methylene blue first, and then, through the degradation of fifteen different pharmaceutical products. Two main types of synthesis methods were considered: aqueous syntheses, where the reaction takes place in water, and organic syntheses, where reactions take place in an organic solvent and only a stoichiometric amount of water is added to the reaction medium. Photocatalysts synthesized via aqueous sol-gel routes showed relatively lower degradation efficiencies; however, the organic route required a calcination step at high temperature to form the photoactive crystalline phase, while the aqueous route did not. The best performances for the degradation of pharmaceuticals arose when Evonik P25 and silver nanoparticles were added to TiO2, which was synthesized using an organic solvent. In the case of methylene blue degradation, TiO2 modified with Evonik P25 and TiO2 doped with MnO2 nanoparticles were the two best candidates.
Disciplines :
Chemical engineering
Materials science & engineering
Author, co-author :
Belet, Artium ;  Université de Liège - ULiège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Wolfs, Cédric ;  Université de Liège - ULiège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces
Mahy, Julien  ;  Université de Liège - ULiège > Department of Chemical Engineering > Department of Chemical Engineering
Poelman, Dirk
Vreuls, Christelle ;  Université de Liège - ULiège > Department of Chemical Engineering > Department of Chemical Engineering
Gillard, Nathalie
Lambert, Stéphanie  ;  Université de Liège - ULiège > Department of Chemical Engineering > Department of Chemical Engineering
Language :
English
Title :
Sol-gel syntheses of photocatalysts for the removal of pharmaceutical products in water
Publication date :
20 January 2019
Journal title :
Nanomaterials
eISSN :
2079-4991
Publisher :
MDPI AG, Basel, Switzerland
Volume :
9
Pages :
126
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 January 2019

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