Preparation of FeCeO by ultrasonic impregnation method for heterogeneous Fenton degradation of diclofenac

Abstract

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.

Evaluation of the Efficiency of Detection and Capture of Manganese in Aqueous Solutions of FeCeOx Nanocomposites Doped with Nb2O5

“…In recent years, special attention has been paid to nanocomposites based on metal oxides or ferrites, interest in which is due to the high potential for their use as catalysts, the basis for carriers of drugs, sensors and adsorbents of pollutants, and waste water treatment [ 1 , 2 , 3 , 4 , 5 ]. The wide range of their application is based on the possibility of obtaining nanostructured composites with large specific surface area, functional groups, and resistance to degradation [ 6 , 7 ]. Magnetic characteristics such as coercivity and saturation magnetization in turn allow the use of nanoparticles for purification of aqueous media by adsorption of contaminants on its surface and subsequent removal from solution by magnetic separation [ 8 , 9 , 10 ].…”

“…Among the variety of metal oxide nanocomposites and nanoparticles FeCeO x structures of the type have great potential in photocatalysis, biomedicine, purification of aqueous media, etc. [ 7 , 8 , 9 , 10 , 11 , 12 ]. Methods for preparing FeCeO x nanostructures are quite numerous, and in most of them multiphase amorphous-like structures are obtained, which makes their own adjustments for their application [ 13 , 14 , 15 ].…”

A High-Efficiency CuO/CeO2 Catalyst for Diclofenac Degradation in Fenton-Like System

“…Especially, CeO 2 can enhance the catalytic property of catalyst for its unique structure and redox property. CeO 2 has abundant oxygen vacancy defects and Ce 4+ /Ce 3+ redox couple (Chong et al, 2016), so it has high oxygen storage capacity, which is beneficial for catalytic reaction.…”

A review of carbon-based and non-carbon-based catalyst supports for the selective catalytic reduction of nitric oxide

“…Different preparation methods have been carried out by modifying the current SCR catalyst to achieve high NO selectivity in the NH 3 -SCR system. Impregnation is one of the most commonly used techniques due to its simplicity [30]. This method starts with the inclusion of metals (Zn, Cu, Ni, Co, Fe or Mn) into the catalyst support material.…”