Ag/CeO2/BiOBr材料的制备及其对卡马西平的降解研究  

Synthesis of Ag/CeO2/BiOBr for degradation of carbamazepine

作　　者：王娅乔 高生旺[2] 朱建超[2] 王国英[1] 夏训峰[2] 王丽君[2] Wang Yaqiao;Gao Shengwang;Zhu Jianchao;Wang Guoying;Xia Xunfeng;Wang Lijun(College of Environmental Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Chinese Research Academy of Environmental Sciences,Beijing 100012,China)

机构地区：[1]太原理工大学环境科学与工程学院,山西太原030024 [2]中国环境科学研究院,北京100012

出　　处：《工业水处理》2020年第9期59-64,共6页Industrial Water Treatment

基　　金：国家科技支撑计划(2014BAL02B02);山西省研究生教育改革研究课题(2018JG36);山西省研究生联合培养基地人才培养项目(2018JD18)。

摘　　要：通过共沉淀法和原位光沉积法成功制备了Ag/CeO2/BiOBr复合材料,采用XRD、SEM、BET、UV-vis DRS对其进行表征,并考察该材料用于光催化降解水溶液中卡马西平的效果。研究结果表明,与CeO2、BiOBr、CeO2/BiOBr相比,Ag/CeO2/BiOBr对可见光具有更强的吸收性能,180 min时对卡马西平的降解率可达83.64%。自由基捕获实验结果表明,催化剂降解卡马西平中起主要作用的活性基团是·O2-和h+。Ag的负载提高了光催化材料对可见光的利用效率,促进了光生载流子的分离,从而增强了其催化活性。循环实验结果表明,Ag/CeO2/BiOBr复合材料具有良好的稳定性,循环使用3次后仍具有较高催化活性。Ag/CeO2/BiOBr composite was successfully synthesized by coprecipitation method coupled with in-situ photodeposition method and characterized by XRD,SEM,BET and UV-vis DRS.The as-prepared samples were app-lied to photocatalytic degradation of carbamazepine in aqueous solution.The results indicated that Ag/CeO2/BiOBr composite showed stronger absorption characteristics in the visible-light region compared with CeO2,BiOBr and CeO2/BiOBr.After irradiation for 180 min,the degradation rate of carbamazepine was up to 83.64%.The radical trapping experiments revealed that·O2-and h+were the dominant active species involved in carbamazepine degradation.The loading of Ag improved the absorption rate of photocatalytic materials for visible light and the separation rate of pho-togenerated electron-hole pairs,which enhanced its catalytic activity.The cycle experiment showed that the Ag/CeO2/BiOBr composite had good stability,and it still maintained high catalytic activity after 3 cycle runs.

关 键 词：Ag/CeO2/BiOBr 卡马西平 光催化降解 

分 类 号：X703.1[环境科学与工程—环境工程]