石油化工高等学校学报2024，Vol.37Issue(5)：56-64,9.DOI:10.12422/j.issn.1006-396X.2024.05.007
g-C3N4/Co3O4的制备及其光催化降解四环素研究
Preparation of g-C3N4/Co3O4 and Its Photocatalytic Degradation of Tetracycline
摘要
Abstract
The use of solar photocatalytic degradation of pollutants is one of the most promising technologies to solve water pollution problems and achieve solar energy conversion.By changing the amount of g-C3N4 added,g-C3N4/Co3O4 catalysts with different g-C3N4 mass fractions are prepared based on the calcination method with cobalt nitrate hexahydrate(Co(NO3)2·6H2O)and urea(NH4CNO)as raw materials.The samples are analyzed and characterized using X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS)and ultraviolet visible absorption spectroscopy(UV-vis DRS).To speculate on the active species of the catalyst,capture agent experiments are conducted on it.The results indicate that the synergistic effect between g-C3N4 and Co3O4 can improve the transfer and separation efficiency of charge carriers at the interface between the two phases.Under visible light,the degradation effect of 10%g-C3N4/Co3O4 is the best,with a degradation rate of 66.50%,which is higher than the degradation effect of single Co3O4(degradation rate of 35.90%).The active species of the catalyst are mainly superoxide radicals(·O-2)and holes(h+).After compounding with g-C3N4,the drawbacks of Co3O4 electron hole pair,such as too fast recombination and a deficient energy level structure,are improved,providing ideas for the degradation of organic pollutants in the future.关键词
光催化/四氧化三钴/四环素/异质结/石墨氮化碳Key words
Photocatalysis/Cobalt tetroxide/Tetracycline/Heterojunction/Graphite nitride carbon分类
化学化工引用本文复制引用
马馨月,陈雷,王芳芳,陈常东..g-C3N4/Co3O4的制备及其光催化降解四环素研究[J].石油化工高等学校学报,2024,37(5):56-64,9.基金项目
国家留学基金委公派访学学者面上项目(CSC202008210025) （CSC202008210025）
教育部"春晖计划"合作科研项目(No.2020703-8) （No.2020703-8）
辽宁省教育厅项目(LJKMZ20220736). （LJKMZ20220736）
