Co/Fe₃O₄@Zeolite磁性催化剂的结构和活化降解盐酸四环素性能  

Structure and Activation Performance of Co/Fe3O4@Zeolite Magnetic Catalyst for Degradation of Tetracycline Hydrochloride

作　　者：赵军 张丽亭[1,2] 武琳馨 任明杰 张占群 陈芳明 李建军 

机构地区：[1]安徽理工大学材料科学与工程学院,安徽 淮南 [2]安徽康达检测技术有限公司,安徽 芜湖

出　　处：《化学工程与技术》2025年第1期12-20,共9页Hans Journal of Chemical Engineering and Technology

基　　金：芜湖市科技计划项目(2023kx12);安徽高校协同创新项目(GXXT-2022-083);安徽省教育厅新时代育人工程项目(2023xscx070)。

摘　　要：本研究采用高能球磨法制备了钴掺杂磁性沸石(Co/Fe3O4@Zeolite)磁性催化剂,并将其用于活化过一硫酸盐(PMS)降解盐酸四环素(TCH)。利用XRD、VSM、SEM和EDS等表征对Co/Fe3O4@Zeolite复合催化剂的形貌和结构进行测试,结果表明Co/Fe3O4均匀地包覆在Zeolite的表面,并且催化剂具有较好的磁性可通过磁铁进行有效的磁分离便于循环利用。通过进行不同的反应体系对比,不同PMS用量、催化剂用量、pH值、循环实验、共存阴离子实验和自由基猝灭实验来评估Co/Fe3O4@Zeolite复合催化剂的催化性能。结果表明,在催化剂添加量为0.40 g/L、PMS添加量为2.0 mmol/L、pH为7时,催化剂的催化效果最好,50 mg/L的TCH去除率可达到98.8%。溶液中共存的阴离子如CO32−、SO42−、Cl−和HPO42−对催化剂的影响较小。经过5次循环实验,TCH的降解率仍能保持在80%以上,表明催化剂具有良好的循环稳定性。自由基猝灭实验表明1O2、O2·−和SO4·−在TCH的降解过程中起主导作用。In this study, cobalt doped magnetic zeolite (Co/Fe3O4@Zeolite) magnetic catalyst was prepared by high energy ball milling and used to activate peroxymonosulfate (PMS) to degrade tetracycline hydrochloride (TCH). The morphology and structure of Co/Fe3O4@Zeolite composite catalyst were tested by XRD, VSM, SEM and EDS. The results showed that Co/Fe3O4 was uniformly coated on the surface of Zeolite. Moreover, the catalyst has good magnetic properties and can be effectively separated by magnets to facilitate recycling. The catalytic performance of Co/Fe3O4@Zeolite composite catalyst was evaluated by comparing different reaction systems, different PMS dosage, catalyst dosage, pH value, cycling experiment, coexistence anion experiment and free radical quenching experiment. The results showed that when the addition of catalyst was 0.40 g/L, the addition of PMS was 2.0 mmol/L and pH was 7, the catalytic effect was the best, and the TCH removal rate of 50 mg/L could re

关 键 词：沸石 过一硫酸盐 盐酸四环素 高级氧化 

分 类 号：O64[理学—物理化学]