日用化学工业（中英文）2025，Vol.55Issue(4)：472-480,9.DOI:10.3969/j.issn.2097-2806.2025.04.009
改性尖晶石催化盐酸四环素降解性能及机理研究
Study on the catalytic degradation of tetracycline hydrochloride by modified spinel and its mechanism
摘要
Abstract
Spinel photocatalysts have environmental friendliness and excellent stability,which have broad application potential in the photocatalytic degradation of antibiotic wastewater.In this work,Cr-doped ZnAl2O4 spinel photocatalyst was prepared by hydrothermal method.The crystal structure,microstructure and spectral properties of the catalyst were characterized by XRD,SEM,EDS,FTIR and PL.Tetracycline hydrochloride was used as the degradation object.The catalytic performance of Cr-doped ZnAl2O4 spinel photocatalyst was investigated under xenon lamp irradiation.The results showed that the ZnAl2O4 spinel prepared by hydrothermal method was of normal spinel structure.The morphology of ZnAl2O4 was irregular blocks of 180-400 nm with porous structure.The lattice structure of ZnAl2O4 was not changed after Cr doping,and Cr was uniformly distributed in ZnAl2O4.The band gap width of Zn0.4Cr0.6Al2O4 was only 2.87 eV,and the photoluminescence intensity of Zn0.4Cr0.6Al2O4 was significantly reduced.The highest percentage of degradation of tetracycline hydrochloride catalyzed by Zn0.4Cr0.6Al2O4 samples at 180 min irradiation was 96.02%,and the degradation percentage was increased to 97.95%at pH 3.The degradation percentage could still maintain above 90%after 5 cycles of testing,indicative of excellent reusability.关键词
ZnAl2O4尖晶石/Cr掺杂/盐酸四环素/光催化/重复使用Key words
ZnAl2O4 spinel/Cr doping/tetracycline hydrochloride/photocatalysis/reuse分类
化学引用本文复制引用
岑凤,李俊..改性尖晶石催化盐酸四环素降解性能及机理研究[J].日用化学工业（中英文）,2025,55(4):472-480,9.基金项目
2024年度广西职业教育教学改革研究重点项目(GXGZJG2024A018) （GXGZJG2024A018）
