CdS/Fe_(2)S_(3)复合物的制备及其光芬顿催化降解环丙沙星  

Preparation of Fe-CdS and Photo-Fenton Catalytic Degradation of Ciprofloxacin

作　　者：杨在卿 倪晓玺 孙亚鑫 孙智慧 李成林 沈世高 刘菲[1] 徐东彦[1] Yang Zaiqing;Ni Xiaoxi;Sun Yaxin;Sun Zhihui;Li Chenglin;Shen Shigao;Liu Fei;Xu Dongyan(College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao266042,China)

机构地区：[1]青岛科技大学化工学院,山东青岛266042

出　　处：《山东化工》2023年第17期15-17,共3页Shandong Chemical Industry

基　　金：国家级大学生创新创业训练计划项目(202210426013)。

摘　　要：以硝酸铁、乙酸镉和硫化钠为原料,在室温下制备了不同Cd/Fe物质的量比的CdS/Fe_(2)S_(3)光芬顿催化剂。以环丙沙星作为目标有机污染物,在可见光条件下考察了Cd/Fe物质的量比、初始pH值以及催化剂投加量对有机物降解效率的影响。结果表明,在Cd/Fe物质的量比为8∶2、初始pH值为7、催化剂投加量为0.25 g/L的反应条件下,环丙沙星的降解率在60 min内可以达到95%。自由基捕获实验表明,在降解过程中,体系中产生的羟基自由基是主要的活性物种,光生空穴起着重要作用。CdS/Fe_(2)S_(3) photo-Fenton catalysts with different Cd/Fe molar ratios were prepared at room temperature with iron nitrate,cadmium acetate,and sodium sulphide as raw materials.The effects of Cd/Fe molar ratio,initial pH,and catalyst dosage on the photo-Fenton degradation efficiency of ciprofloxacin were investigated under visible light irradiation.The results showed that the degradation efficiency of ciprofloxacin could reach 95%within 60 min under the optimum reaction conditions of Cd/Fe molar ratio of 8∶2,initial pH value of 7,and catalyst dosage of 0.25 g/L.The radical capture experiments proved that the hydroxyl radical is the dominant active species during the degradation process,and photogenerated holes generated in the system play a very important role.

关 键 词：CdS/Fe_(2)S_(3) 光芬顿 环丙沙星 降解 

分 类 号：TQ426.8[化学工程] O643.3[理学—物理化学] X703[理学—化学]