Journal
ULTRASONICS SONOCHEMISTRY
Volume 32, Issue -, Pages 231-240Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2016.03.019
Keywords
FeCeOx; Ultrasonic; Impregnation; Diclofenac; Like-Fenton
Categories
Funding
- Fundamental Research Funds for Central Universities
- Research Funds of Renmin University of China [14XLNQ02, 15XNLD04]
- National Natural Science Foundation of China [51478274]
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FeCeOx has been successfully synthesized by ultrasonic impregnation method and applied in diclofenac removal in heterogeneous Fenton process. The effects of ultrasonic density, impregnation time, mole ratio of Fe and Ce and calcination temperature were investigated. Nitrogen adsorption/desorption, SEM, XRD, HRTEM, Raman and XPS analyses were characterized. Stability and reusability of FeCeOx were evaluated. The results indicated that 83% degradation efficiency of diclofenac was achieved by FeCeOx under the optimum preparation conditions. Fe ions were distributed uniformly in crystal structure and the solid solution structure of FeCeOx with a lattice constriction was formed. Exposed crystalline plane (200) with a relatively high surface energy may be the main reason to provide high catalytic activity of FeCeOx. Oxygen vacancies took part in catalytic process and a portion of them were oxidized after reaction. FeCeOx showed an excellent chemical stability and reusability in heterogeneous Fenton process. (C) 2016 Elsevier B.V. All rights reserved.
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