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影响因子：4.1

DOI码：10.1021/acsomega.4c02280

发表刊物：ACS Omega

摘要：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.

论文类型：期刊论文

文献类型：J

卷号：9

期号：14

页面范围：16868-16875

是否译文：否

收录刊物：SCI

发布期刊链接：https://pubs.acs.org/doi/full/10.1021/acsomega.4c02280

第一作者：Xin Zhao

第一作者：Yishuai Jing

通讯作者：Jiaming Song

合写作者：Zhonghua Dai

合写作者：Yuanbo Chu

合写作者：Zhenyu Liu

合写作者：Yu Cong