摘要
采用微波合成法制备了Bi2S3/g-C3N4复合光催化剂,利用X射线衍射(XRD)、傅里叶红外光谱(FT-IR)、X射线光电子能谱(XPS)、紫外可见-漫反射吸收光谱(Uv-vis)、物理吸附仪(BET)等对其进行了表征,以罗丹明B(RhB)为目标化合物对其光催化性能进行了评价。结果表明,与纯Bi2S3和g-C3N4相比,复合样品的禁带宽度变小,比表面积增大,光生载流子的复合效率降低,显著提高了其光催化降解RhB的效率。复合样品5-CNBS对RhB的降解率达99%以上,分别是纯g-C3N4和Bi2S3单体对RhB降解效率的1.59倍和4.95倍。
Bi 2S 3/g-C 3N 4 composite photocatalyst was prepared by microwave synthesis. The samples were characterized by XRD, FT-IR, XPS, Uv-vis, BET and so on. Its photocatalytic performance was evaluated by RhB target compound. Compared with pure Bi 2S 3 and g-C 3N 4, the band gap of the composite samples become smaller, and the specific surface area increases, and the composite efficiency of photogenic carriers decreases, which significantly improves the efficiency of photocatalytic degradation of RhB. The degradation rate of RhB in the composite sample 5-CNBS is more than 99%, which is 1.59 times and 4.95 times that of pure g-C 3N 4 and Bi 2S 3 monomers, respectively.
作者
任秋燕
傅敏
吴晓璐
汪成
季雨晴
REN Qiu-yan;FU Min;WU Xiao-lu;WANG Cheng;JI Yu-qing(College of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,China;Chongqing Key Laboratory of Catalysis and New Environmental Materials,Chongqing 400067,China)
出处
《人工晶体学报》
EI
CAS
北大核心
2019年第8期1462-1468,共7页
Journal of Synthetic Crystals
基金
重庆市高校优秀成果转化资助项目(KJZH17122)
重庆市社会民生科技创新专项(cstc2016shmszx20012)
关键词
硫化铋
氮化碳
光催化
异质结
bismuth sulfide
carbon nitride
photocatalytic
heterojunction
