Tin dioxide; Sol-gel; Alkali metals; Photocatalysis; Aromatic compounds
Abstract :
[en] In order to improve the photocatalytic properties of tin dioxide, crystallized powders of SnO(2) photocatalysts doped by alkali metals (Li, Na and K) were synthesized by sol-gel process. The physical properties of these materials were characterized by X-ray diffraction, nitrogen adsorption-desorption, Scanning electron microscopy and Ultraviolet-visible diffuse reflection spectroscopy. The photocatalytic tests under UV radiation conducted on four aromatic compounds (phenol, paranitrophenol, pentachlorophenol and benzoic acid) showed that tin dioxide modified by sodium possesses good photocatalytic activity; The Li-doped SnO(2) is moderately active, while modification by potassium does not improve this activity. (C) 2011 Elsevier B.V. All rights reserved.
Disciplines :
Materials science & engineering Chemical engineering
Author, co-author :
Benhebal, Hadj
Chaib, Messaoud
Léonard, Angélique ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Procédés et développement durable
Lambert, Stéphanie ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Génie catalytique
Crine, Michel ; Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires
Language :
English
Title :
Synthesis, characterization and photocatalytic properties of alkali metals doped tin dioxide
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