Impact Factor4.1

DOI number:10.1021/acsomega.4c02280

Journal:ACS Omega

Abstract:As a wide-bandgap rare-earth oxide, Eu2O3 was often utilized as an auxiliary material of other photocatalysts because its photocatalytic performance was limited by the luminescence characteristics of Eu3+ and low light utilization. In this study, we improved the photocatalytic degradation performance of the Eu2O3 nanoparticles by doping with Fe cations. The Eu2O3 nanoparticles with different Fe-doping concentrations (1, 3, and 5%, noted as EF1.0, EF3.0, and EF5.0, respectively) were synthesized via chemical precipitation and calcination methods. It was found that doping could reduce Eu2O3’s bandgap, which probably originated from the introduction of oxygen vacancies with lower energy levels than the conduction band of Eu2O3. Compared with the undoped Eu2O3 nanoparticles with a removal efficiency of 22% for degrading rhodamine B dye within 60 min, the photocatalytic degradation efficiencies of EF1.0, EF3.0, and EF5.0 were demonstrated to be improved to 42, 48, and 33%, respectively, and EF3.0’s performance was the best. The enhanced photocatalytic performance of the doped samples was related to the oxygen vacancies acting as capture centers for electrons, such that the photogenerated electron–hole pairs were efficiently separated and the redox reactions on the surface of the nanoparticles were enhanced accordingly. Additionally, the enhanced light absorption and broadened spectral band further improved EF3.0’s degradation efficiency.

Indexed by:Journal paper

Document Type:J

Volume:9

Issue:14

Page Number:16868-16875

Translation or Not:no

Date of Publication:2024-03-27

Included Journals:SCI

Links to published journals:https://pubs.acs.org/doi/full/10.1021/acsomega.4c02280

First Author:Xin Zhao

First Author:Yishuai Jing

Correspondence Author:Jiaming Song

All the Authors:Zhonghua Dai

All the Authors:Yuanbo Chu

All the Authors:Zhenyu Liu

All the Authors:Yu Cong