Impact Factor7.8

DOI number:10.1016/j.psep.2023.01.076

Journal:Process Saf. Environ.

Abstract:Recently, rare earth (RE) elements and their oxides have been attracting more and more attention in the field of photocatalytic degradation. Due to the unique 4 f electronic structure and optical properties, the RE element, europium (Eu), together with its oxides, are often used for surface modification of other photocatalysts. Nevertheless, the photocatalytic degradation property of europium oxide has been rarely reported. In this study, we synthesized Eu2O3 nanoparticles via chemical precipitation and calcination processes, and performed surface modification by using surfactants as polyvinyl pyrrolidone (PVP) and hexadecyl trimethyl ammonium bromide (CTAB). Compared with pure Eu2O3 nanoparticles and those synthesized with PVP, photocatalytic degradation efficiencies of Eu2O3 nanoparticles synthesized with surfactant CTAB for degrading rhodamine B dye demonstrated to be improved by 16% and 12%, respectively. The ultraviolet-visible diffuse reflectance spectra measurements indicate that CTAB can increase the bandgap of Eu2O3 due to the reduction of oxygen defects. Photoluminescence spectra demonstrate that the surfactant would affect the luminescence of Eu3+ and carrier redistribution of energy levels.

Indexed by:Journal paper

Document Type:J

Volume:171

Issue:1

Page Number:888

Translation or Not:no

Date of Publication:2023-03-01

Included Journals:SCI

Links to published journals:https://www.sciencedirect.com/science/article/pii/S0957582023000873

First Author:Yishuai Jing

Correspondence Author:Xin Zhao

Correspondence Author:Jiaming Song

All the Authors:Tianxin Kang

All the Authors:Peng Hu

All the Authors:Haibo Fan

All the Authors:Feng Teng