Bi4Ti3O12/Ag/AgCl复合纤维的制备及可见光催化性能  

Synthesis of Bi4Ti3O12/Ag/AgCl Composite Nanofibers and Its Visible Light Photocatalysis

作　　者：孙蒙 刘俊[1] 张聪苗 何昭懿 朱文耀 袁彬 惠倩 邱磊 崔雯娜 常梦洁[1] SUN Meng;LIU Jun;ZHANG Congmiao;HE Zhaoyi;ZHU Wenyao;YUAN Bin;HUI Qian;QIU Lei;CUI Wenna;CHANG Mengjie(College of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China)

机构地区：[1]西安科技大学材料科学与工程学院,西安710054

出　　处：《人工晶体学报》2020年第3期468-472,479,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(21501140)。

摘　　要：本文合成了钛酸铋/银/氯化银(Bi4Ti3O12/Ag/AgCl,BTO/Ag/AgCl)复合纳米纤维,并研究了其可见光催化性能。通过静电纺丝技术和高温煅烧制备了BTO纳米纤维,采用沉淀-光照还原法在BTO纳米纤维表面负载了Ag/AgCl纳米颗粒获得BTO/Ag/AgCl复合纤维。结果表明,BTO和Ag/AgCl均具有良好的结晶性能,BTO/Ag/AgCl比单纯的BTO纳米纤维具有更强的可见光吸收。光催化测试表明,由于Ag/AgCl对可见光吸收的增加,以及与BTO间形成的半导体异质结,BTO/Ag/AgCl复合纳米纤维对染料RhB的光催化降解效率均高于纯的BTO纳米纤维,经100 min光照后可由29%提高到80%。Bi4Ti3O12/Ag/AgCl(BTO/Ag/AgCl)composite nanofibers were prepared and their visible light photocatalysis activities were studied.BTO nanofibers were prepared by electrostatic spinning and calcined at high temperature.BTO/Ag/AgCl composite fibers were prepared by chemical deposition and photoreduction modification of Ag/AgCl nanoparticles on BTO nanofiber surface.The results show that both of BTO and Ag/AgCl are highly crystallized.The BTO/Ag/AgCl shows enhanced visible light absorption than pure BTO nanofiber.Photocatalysis performance shows due to the enhanced visible light absorption and p-n junction between Ag/AgCl and BTO,BTO/Ag/AgCl composite nanofibers show enhanced visible light photocatalysis performance than BTO fibers.The degradation efficiency can be improved from 29%to 80%after 100 min visible light irradiation.

关 键 词：钛酸铋 银/氯化银 纳米纤维 可见光催化 

分 类 号：O611.4[理学—无机化学]