不同结构导向剂制备WO_(3)及其光催化降解土霉素  

Preparation of WO 3 with different structure guiding agents and its photocatalytic degradation of oxytetracycline

作　　者：赵美花[1] 温靖经 严明乐 刘艺佳 陈晓珊 蒋芃 Zhao Mei-hua;WEN Jing-jing;YAN Ming-le;LIU Yi-jia;CHEN Xiao-shan;JIANG Peng(School of Civil Engineering,Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《广州大学学报（自然科学版）》2023年第3期19-25,共7页Journal of Guangzhou University:Natural Science Edition

基　　金：国家自然科学基金资助项目(52170128)。

摘　　要：光催化降解难降解有机污染物是一种高效且经济的方法。文章采用一步水热法并添加不同的结构导向剂制备氧化钨(WO_(3))光催化剂,以土霉素为目标污染物来评价其光催化活性,利用X-射线衍射仪(XRD)、X-射线光电能谱(XPS)、场发射扫描电镜(SEM)、透射电子显微镜(TEM)、比表面积分析(BET)、光致发光光谱(PL)等表征手段研究结构导向剂对其晶体生长、形貌和光催化效率的影响,并测试了其可见光降解土霉素的效率。结果表明,WO_(3)-NaCl样品的三维花状微球结构增加了其比表面积,使其具有最大的吸附性能。WO_(3)-NaCl具有最佳的光催化活性,可见光照射120 min对土霉素的降解效率达到60%,这可以归因为吸附与降解的协同作用提高了其对土霉素的去除率。The photocatalytic degradation of refractory organic pollutants is an efficient and economical method.In this paper,WO_(3)photocatalyst was prepared by a one-step hydrothermal method with different structure directing agents.Oxytetracycline was used as the target pollutant to evaluate its photocatalytic activity.The effect of structure directing agents on crystal growth was studied by XRD,XPS,SEM,TEM,BET,and PL spectroscopy.The influence on photocatalytic efficiency of oxytetracycline was also studied.The results show that the three-dimensional flower like microsphere structure of WO_(3)NaCl sample increases its specific surface area,making it have the largest adsorption performance.WO_(3)NaCl has the best photocatalytic activity,and the degradation efficiency of oxytetracycline reaches 60%in 120 minutes under visible light irradiation,which can be attributed to the synergistic effect of adsorption and degradation to improve the removal rate of oxytetracycline.

关 键 词：WO_(3) 结构导向剂 可见光 光催化 土霉素 

分 类 号：O657.3[理学—分析化学]