摘要
采用水热法合成铁酸铋(BiFeO3)光催化剂,通过X射线衍射、扫描电镜、紫外-可见漫反射光谱等对BiFeO3进行结构和性能表征。以此BiFeO3为光催化剂在可见光辐射下对黄腐酸进行光催化降解,探究催化剂的用量、溶液的pH值、黄腐酸浓度等因素对降解的影响。结果表明,当催化剂用量为0.080 g、pH=3.0、黄腐酸浓度为50 mg·L^-1、反应6 h,黄腐酸的降解率达到95.0%,说明BiFeO3在可见光辐射下能有效光催化降解黄腐酸。
BiFeO3 powder photocatalyst was synthesized by hydrothermal method. The structure and properties of BiFeO3 were characterized by X-ray diffraction,scanning electron microscopy and ultraviolet-visible diffuse reflectance spectroscopy. With BiFeO3 as a photocatalyst,visible-light photocatalytic degradation of fulvic acid(FA) solution was carried out. The effects of catalyst dosage,pH value and concentration of FA on degradation were investigated. The results showed that the degradation efficiency reached 95.0% in 6 h when the amount of catalyst is 0.08 g,pH =3.0,and the concentration of FA solution 50 mg·L-1. This indicates that the prepared BiFeO3 can catalyze the degradation of FA solution under visible light irradiation.
作者
李冬雯
刘守清
LI Dongwen;LIU Shouqing(School of Chemistry,Biology and Materials Engineering,SUST,Suzhou 215009,China;Jiangsu Key Laboratory of Environmental Functional Materials,Suzhou 215009,China)
出处
《苏州科技大学学报（自然科学版）》
CAS
2020年第3期50-55,共6页
Journal of Suzhou University of Science and Technology（Natural Science Edition）
基金
国家自然科学基金资助项目(21576175)
苏州科技大学研究生创新项目(SKSJ18_013)。
关键词
铁酸铋
可见光
黄腐酸
光催化
BiFeO3
visible light
fulvic acid
photocatalysis
