Solution combustion synthesis of CeO₂powders and its application in water treatment

Abstract

CeO 2 powders were synthesized via a solution combustion method. The product was characterized by X-ray diffraction scanning electron microscope, and BET surface area analysis. The results indicated that the CeO 2 powders present a foaming state with a surface area of 28.17 m 2 g -1 . The adsorption performance of the CeO 2 powders was tested toward the removal of typical pollutants of Cr(VI) and Congo red (CR). The results showed that the adsorption of Cr(VI) and CR onto CeO 2 powders followed the Langmuir isotherm model and pseudosecond-order kinetics, with an adsorption capacity of 5.69 mg g -1 and 35.51 mg g -1 , respectively.

Bandgap engineering approach for designing CuO/Mn3O4/CeO2 heterojunction as a novel photocatalyst for AOP-assisted degradation of Malachite green dye

“…3 a. In the CeO 2 phase (JCPDS 65–2975), diffraction from planes (111), (200), (220), (311), (400), (331), and (442) produced peaks at 28.54°, 33.08°, 47.48°, 56.34°, 69.42°, 76.70°, and 88.43°, respectively 34 , 35 . These peaks matched well with the previously reported JCPDS file number 65–2975 and were compatible with the cubic system with a face-centered lattice structure of CeO 2 nanomaterial.…”

“…2 below was employed to evaluate photodegradation kinetics: C 0 and C denote MG concentrations at t = 0 and t = t, and k is the pseudo-first-order reaction rate constant (in min −1 ). 220), (311), (400), (331), and (442) produced peaks at 28.54°, 33.08°, 47.48°, 56.34°, 69.42°, 76.70°, and 88.43°, respectively 34,35 . These peaks matched well with the previously reported JCPDS file number 65-2975 and were compatible with the cubic system with a face-centered lattice structure of CeO 2 nanomaterial.…”