Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 3, Pages 4173-4178Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.08.074
Keywords
Synthesis; Zn2SnO4; ZnAl2O4; ZuFe(2)O(4); Photocatalysis
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Funding
- CAPES (Brazil)
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Ternary zinc spinel oxides such as Zn2SnO4, ZnAl2O4 and ZnFe2O4 were synthesized and characterized, and their activities in the photodegradation of phenol molecules were investigated. Zn2SnO4, ZnAl2O4 and ZnFe2O4 powders were synthesized by hydrothermal, metal chitosan complexation and solvothermal routes, respectively. The face-centered cubic spinel structure of each material was confirmed by powder X-ray diffractometry (XRD) and its porous structure by N-2 adsorption-desorption isotherms. The characterization of spinels was complemented with Fourier transform infrared spectroscopy (FUR) and X-rays fluorescence (XRF), revealing the formation of spinel structures with high purity. The photocatalytic activity in the degradation of phenol was observed only with Zn2SnO4 oxide. Mineralization degree of phenol molecules by Zn2SnO4 photocatalyst determined by total organic carbon analysis (TOC) reached 80% at 360 min under sunlight. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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