SrBi2O4; doping; sol-gel; photocatalysis; Congo red
Abstract :
[en] The aim of this work is to synthesize photocatalysts usable in the decomposition processes of organic pollutants under visible irradiation. In this context, pure and zinc-doped SrBi2O4 spinel oxide powders were synthesized by sol-gel process. Physical and chemical properties of the calcination nanoproducts were characterized by XRD, FTIR spectroscopy, BET surface area and SEM. Congo red was selected as a model dye to evaluate the photocatalytic activity of the materials. The formation of spinel structure was confirmed by XRD and infrared spectroscopy. The nanometric size of the crystallites undergoes a decrease following the incorporation of zinc ions. On the other hand, all powders display very low specific surfaces between 0.1429 and 0.3549 (1-3%) was favorable to boost the activity of SrBi2O4 which gave an 84% degradation of the dye after 3 hours of irradiation.
Disciplines :
Materials science & engineering Chemical engineering
Author, co-author :
Rabiaa, H; Department of Chemistry, Faculty of Matter Sciences, University of Tiaret, Tiaret, Algeria
Benhebal, H; Department of Chemistry, Faculty of Matter Sciences, University of Tiaret, Tiaret, Algeria
Sebbah, O; Synthesis and Catalysis Laboratory, University of Tiaret, Tiaret, Algeria
Kadi, S; Biodiversity, Health and Valorization of Biological Resources Laboratory, Department of Biology, University of Tiaret, Tiaret, Algeria
Lellou, S; Biodiversity, Health and Valorization of Biological Resources Laboratory, Department of Biology, University of Tiaret, Tiaret, Algeria
Farcy, Antoine ; Université de Liège - ULiège > Chemical engineering ; Department of Chemical Engineering Nanomaterials, Catalysis and Electrochemistry, University of Li ge, Belgium
Mahy, Julien ; Université de Liège - ULiège > Department of Chemical Engineering > Génie chimique - Nanomatériaux et interfaces ; Department of Chemical Engineering Nanomaterials, Catalysis and Electrochemistry, University of Li ge, Belgium
Lambert, Stéphanie ; Université de Liège - ULiège > Department of Chemical Engineering ; Department of Chemical Engineering Nanomaterials, Catalysis and Electrochemistry, University of Li ge, Belgium
Language :
English
Title :
Zn-doped SrBi2O4 nanopowders prepared by sol-gel method and their photocatalytic properties
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