MIL-53(Fe)光催化材料制备及其降解水中盐酸四环素的研究  

Preparation of MIL-53(Fe)Photocatalytic Material and Degradation of Tetracycline Hydrochloride in Water

作　　者：张莹 刘冰[1] 郭华 Zhang Ying;Liu Bing;Guo Hua(Xiangyang Polytechnic,Xiangyang 441050,China)

机构地区：[1]襄阳职业技术学院,湖北襄阳441050

出　　处：《广东化工》2024年第9期59-60,43,共3页Guangdong Chemical Industry

基　　金：湖北省自然科学基金项目(2022CFB856)。

摘　　要：目的:制备新型光催化材料高效降解水中盐酸四环素。方法:采用溶剂热法制备Fe基MOF材料MIL-53(Fe),利用XRD、FT-IR、XPS、SEM、UV-Vis DRS、BET等方法对材料进行表征,并研究其降解盐酸四环素的光催化活性、影响因素和机理。结果:在可见光下,当降解时间为180 min、盐酸四环素质量浓度为20 mg/L、材料的加入量为0.2 g/L时,盐酸四环素的降解率为98%。结论:研究发现,降解过程中催化剂的加入量和溶液初始pH值均对降解效果有较大影响。催化降解机理研究发现,降解过程中超氧自由基(·O_(2)^(-))起主要作用,空穴(h+)起次要作用,羟基自由基(·OH)无作用。材料的稳定性评价研究发现,5次循环降解后材料稳定性良好。Objective:To prepare a new photocatalytic material for the efficient degradation of tetracycline hydrochloride in water.Methods:MIL-53(Fe)was prepared by solvothermal method and characterized by XRD,FT-IR,XPS,SEM,UV-Vis DRS,BET,etc.The photocatalytic activity,influencing factors and mechanism of degradation of tetracycline hydrochloride were investigated.Results:Under visible light,the degradation rate of tetracycline hydrochloride was 99%when the degradation time was 180 min,the mass concentration of tetracycline hydrochloride was 20 mg/L and the amount of material was 0.2 g/L.Conclusion:The addition of catalysts in the process of degradation showed that both the dosage and the initial pH value of the solution had great influence on the degradation effect.Superoxide free radical(·O_(2)^(-))plays a major role in the catalytic mechanism,hole(h+)plays a secondary role,and hydroxyl free radical(·OH)has no role.The stability of the material was evaluated.The material stability was good after 5 cycle degradation.

关 键 词：盐酸四环素 光催化 MIL-53(Fe) 可见光 

分 类 号：TQ[化学工程]