人工晶体学报, 2020, 49 (3): 468, 网络出版: 2020-06-15
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
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%。
Abstract
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.
孙蒙, 刘俊, 张聪苗, 何昭懿, 朱文耀, 袁彬, 惠倩, 邱磊, 崔雯娜, 常梦洁. Bi4Ti3O12/Ag/AgCl复合纤维的制备及可见光催化性能[J]. 人工晶体学报, 2020, 49(3): 468. SUN Meng, LIU Jun, ZHANG Congmiao, HE Zhaoyi, ZHU Wenyao, YUAN Bin, HUI Qian, QIU Lei, CUI Wenna, CHANG Mengjie. Synthesis of Bi4Ti3O12/Ag/AgCl Composite Nanofibers and Its Visible Light Photocatalysis[J]. Journal of Synthetic Crystals, 2020, 49(3): 468.