TiO₂@LaBO₃ 型复合材料的制备及其光催化降解水体抗生素污染效果研究

打开文本图片集

Abstract：Toaddressthe technicalchallnges inremediatingdoxycyclinehydrochloride（DOX）contaminationinwaterbodies，this study synthesized T IiO2@LaBO3 0 B=Mn ，Fe， Co） heterojunction photocatalysts via the sol-gel method，focusing on theregulatory efectsofperovskiteB-siteelementsubstitutiononmaterialperformance，andsynergisticallenhanced the photocatalytic oxidation process with peroxymonosulfate （PMS）.Results demonstrated that when Feoccupied the B-site， TiC ）2@LaFe（Δ）3 achieved a photocatalytic degradation efficiency of 98.04% （2 h） for 0.03 g ： L-1DOX solution under optimized conditions （tetrabutyl titanate （TBOT） dosage：9 mL，PMS concentration： 0.5 ·L-1），significantlyoutperforming Mn （20 g （90.31% andCo （78.97% ）systems.This enhancement was attributed to the synergistic effects of Fe3+ electron transfer and interfacial chargeseparationwithinthe heterojunction.Cycling experiments confirmed thatthecatalyst retained over 82% （204号 eficiencyafterfourreusecycles，indicateditsstablecrystalographicstructure.Thisresearchprovidestheoreticalinsights fordesigning eficientheterojunctioncatalystsforantibioticdegradationandvalidatestheirpotential inwastewatertreat

mentapplications. Keywords： titanium dioxide;perovskite;photocatalysis

近年来，全球范围内抗生素的滥用与不当排放导致水体中抗生素残留问题日益严峻。（剩余8020字）