Highly dispersed CeO_(2-x)nanoparticles with rich oxygen vacancies enhance photocatalytic performance of g-C_(3)N_(4)toward methyl orange degradation under visible light irradiation

作     者：Xuejun Xu Tianhua Huang Yisheng Xu Huawen Hu Shuang Liao Xiaohong Hu Dongchu Chen Min Zhang Xuejun Xu;Tianhua Huang;Yisheng Xu;Huawen Hu;Shuang Liao;Xiaohong Hu;Dongchu Chen;Min Zhang

作者机构：School of Materials Science and Hydrogen EnergyFoshan UniversityFoshan 528000China Guangdong Key Laboratory for Hydrogen Energy TechnologiesFoshan 528000China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2022年第40卷第8期

页      面：1255-1263页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Project supported by the Guangdong Provincial Education Department Special Project of Key Research Areas(2020ZDZX2066) the Innovation Team of Universities of Guangdong Province(2020KCXTD011) the Engineering Research Center of Universities of Guangdong Province(2019GCZX002) the Guangdong Key Laboratory for Hydrogen Energy Technologies(2018B030322005) Guangdong Basic and Applied Basic Research Foundation(2019A1515110586,2019A1515110534) 

主　　题：CeO_(2-x) G-C_(3)N_(4) Heterojunctions Oxygen vacancies Rare earths 

摘      要：CeO_(2)/g-C_(3)N_(4)photocatalysts have attracted tremendous attention in the photocatalytic degradation of organic *** design and construction of highly active CeO_(2)/g-C_(3)N_(4)photocatalysts without harsh conditions are still ***,highly dispersed CeO_(2-x)nanoparticles with rich oxygen vacancies were successfully precipitated on the surface of g-C_(3)N_(4)under mild *** fabricated CeO_(2-x)/g-C_(3)N_(4)exhibits remarkable activity and stability for photocatalytic degradation of MO *** optimal rate constant of MO degradation over CeO_(2-x)/g-C_(3)N_(4)is about 0.031 min^(-1),which is three times higher than that of g-C_(3)N_(4).A negligible activity decrease is observed after three cycling *** enhanced catalytic performance can be ascribed to the excellent dispersion of CeO_(2-x)with rich oxygen vacancies that benefit O_(2)adsorption and visible light *** addition,the proper band alignment between CeO_(2-x)and gC_(3)N_(4)is conducive to the highly efficient separation of photogenerated electron-hole pairs.