无机材料学报2024，Vol.39Issue(3)：321-329,中插5-中插8,13.DOI:10.15541/jim20230408
II/Z型Bi2MoO6/Ag2O/Bi2O3异质结可见光催化降解四环素
II/Z-type Bi2MoO6/Ag2O/Bi2O3 Heterojunction for Photocatalytic Degradation of Tetracycline under Visible Light Irradiation
摘要
Abstract
Construction of heterojunction can effectively suppress the swift recombination of photogenerated electrons and holes in photocatalyst.In this study,a II/Z-type Bi2MoO6/Ag2O/Bi2O3 heterojunction photocatalyst was synthesized using a solvothermal method combined with calcination.Various techniques were ultilized to examine the composition,morphology and photoelectrochemical properties of the as-prepared materials.The findings revealed that the optimal composition of the composite material was 25%ABOBM(with a mass ratio of Ag2O/Bi2O3 and Bi2MoO6 of 1:4).Under visible light irradiation,the degradation efficiency of tetracycline(TC)by 25%ABOBM reached 85.6%,which was significantly higher than that of Ag2O/Bi2O3 and Bi2MoO6,and maintained its good stability after three cycles of experiments.The enhanced photocatalytic performance of 25%ABOBM is attributed to the formation of heterojunctions and the unique morphologies among Ag2O,Bi2O3 and Bi2MoO6.Both h+ and ·O2-are significant contributors,while ·OH and 1O2 have secondary roles in the degradation process of TC,as indicated by free radical capture experiment and electron paramagnetic resonance spectroscopy(EPR).Furthermore,the related photocatalytic mechanisms were explored,and the potential degradation pathways of TC were analyzed using liquid chromatography-mass spectrometry(LC-MS).This study offers a novel approach to the preparation of photocatalysts with dual heterojunctions and demonstrates their application in the degrading organic pollutants.关键词
Bi2MoO6/Ag2O/Bi2O3/光催化降解/四环素/异质结Key words
Bi2MoO6/Ag2O/Bi2O3/photocatalytic degradation/tetracycline/heterojunction分类
化学化工引用本文复制引用
叶茂森,王耀,许冰,王康康,张胜楠,冯建情..II/Z型Bi2MoO6/Ag2O/Bi2O3异质结可见光催化降解四环素[J].无机材料学报,2024,39(3):321-329,中插5-中插8,13.基金项目
陕西省重点研发计划(2023-YBGY-502) （2023-YBGY-502）
陕西省秦创原"科学家+工程师"团队建设项目(2023KXJ-185) （2023KXJ-185）
西安市碑林区科技计划项目(GX2318) （GX2318）
陕西省教育厅专项研究项目(18JK0443)Key R&D Plan of Shaanxi Province(2023-YBGY-502) （18JK0443）
QinChuangYuan"Scientist + Engineer"Team Construction Project of Shaanxi Province(2023KXJ-185) （2023KXJ-185）
Science and Technology Plan Project of Beilin District in Xi'an(GX2318) （GX2318）
Special research Project of Education Department of Shaanxi Province(18JK0443) （18JK0443）
