摘要
采用溶剂热法合成了单斜白钨矿型钒酸铋(m-BiVO_(4))催化材料,采用XRD、BET、SEM、TEM等对其进行了表征。研究发现m-BiVO_(4)的形貌和晶面可以通过反应溶液的pH进行调控,在pH=7条件下制备出了具有(010)晶面择优暴露的m-BiVO_(4)(BVO-010)。以盐酸金霉素(CTC-HCl)、土霉素(OTC)、四环素(TC)和盐酸四环素(TCN)溶液为目标污染物,评价了制备材料的光催化降解性能。结果发现,与主要暴露热力学稳定的(-121)面的m-BiVO_(4)(BVO-121)相比,BVO-010的降解性能明显提高,光照150 min后对CTC-HCl、OTC、TC和TCN的降解率分别为77.9%、79.2%、63.6%和73.9%,可用于处理含抗生素类药物的污水。
The monoclinic scheelite bismuth vanadate(m-BiVO_(4)) catalytic material was synthesized by a solvothermal method and characterized by XRD,BET,SEM,TEM,etc.It was found that the morphology and crystal facet of BiVO_(4) could be controlled by the pH value of the reaction solution,and m-BiVO_(4) with preferentially exposed(010) facet(BVO-010) was prepared at pH =7.With chlortetracycline hydrochloride(CTC-HCl),oxytetracycline(OTC),tetracycline(TC) and tetracycline hydrochloride(TCN) solutions as target pollutants,the degradation performance of the samples was evaluated.It was disclosed that compared to m-BiVO_(4) that mainly exposed the thermodynamically more stable(-121) facets(BVO-121),BVO-010 exhibited more outstanding photocatalytic performance,and the degradation rates of CTC-HCl,OTC,TC,and TCN were77.9%,79.2%,63.6%,and 73.9%,respectively after 150 min illumination,which was expected to treat wastewater containing antibiotic drugs.
作者
史苏琦
张守臣
张迪嘉
宁桂玲
叶俊伟
SHI Suqi;ZHANG Shouchen;ZHANG Dijia;NING Guiling;YE Junwei(State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《无机盐工业》
CAS
CSCD
北大核心
2021年第11期114-121,共8页
Inorganic Chemicals Industry
基金
国家自然科学基金项目(U1808210,U1607101)
中央高校基本科研业务费(DUT20LK37)。
