摘要
采用水解沉淀法、溶液燃烧法、溶剂热合成法、离子热法制备BiOBr,通过X-射线衍射、扫描电镜、荧光光谱仪及紫外可见分光光度计对所制备的BiOBr的性能进行表征。结果表明:4种方法制备的BiOBr均为四方相晶体,水解沉淀法制备的BiOBr是由片状颗粒聚集成花状大尺寸颗粒,电子与空穴的结合程度较轻,禁带宽度为2.79 eV,在氙灯照射下光催化性能最好,光照30 min后对罗丹明B的降解率达到了100%;而离子热法制备的BiOBr,颗粒尺寸最大,电子与空穴的结合程度高,禁带宽度也最大,光催化性能相比而言也最差,氙灯照射30 min后对对罗丹明B的降解率仅为57.78%。
BiOBr was prepared by hydrolysis precipitation method,solution combustion method,solvent thermal synthesis method and ion thermal method.The phase,morphology,luminescence properties and UV-Vis absorption of the prepared biobr were characterized by X-ray diffraction,scanning electron microscope,fluorescence spectrometer and UV-Vis spectrophotometer;Rhodamine B was used to simulate wastewater to study the photocatalytic performance of BiOBr.The results showed that the BiOBr prepared by the four methods were tetragonal crystals.The BiOBr prepared by hydrolysis precipitation method was composed of flake particles into flower shaped large-size particles.The combination degree of electrons and holes was light,and the band gap width was 2.79 ev.The photocatalytic performance was the best under xenon lamp irradiation.After 30 minutes of illumination,the degradation rate of Rhodamine B reached 100%,and the BiOBr prepared by ion thermal method had the largest particle size,high binding degree between electrons and holes,the largest band gap and the worst photocatalytic performance.The degradation rate of Rhodamine B after 30 min irradiation with xenon lamp was only 57.78%.
作者
王秋芹
杨锐锐
汪竹苗
韩林松
刘丙豹
黄晓晨
Wang Qiuqin;Yang Ruirui;Wang Zhumiao;Han Linsong;Liu Bingbao;Huang Xiaochen(Anhui Provincial Engineering Laboratory of Silicon-based Materials,Bengbu University,Bengbu,Anhui 233030,China)
出处
《湖北工程学院学报》
2022年第6期22-26,共5页
Journal of Hubei Engineering University
基金
安徽省高校科学研究重大项目(KJ2021ZD0141)
蚌埠学院校级重点科研项目(2022ZR01zd)
安徽省大学生创新创业训练项目(S202011305051)
关键词
BiOBr
水解沉淀法
溶液燃烧法
溶剂热合成法
离子热法
BiOBr
hydrolysis precipitation method
solution combustion method
solvothermal synthesis
ion thermal method
