人工晶体学报2017，Vol.46Issue(12)：2386-2392,7.
Bi3Ti4O12/α-Bi2O3/TiO2复合光催化剂的制备及其可见光催化活性研究
Preparation and Visible Light Photocatalytic Activity of Bi3Ti4O12/α-Bi2 O3/TiO2 Composite Photocatalyst
摘要
Abstract
Bi3 Ti4 O12/α-Bi2 O3/TiO2 composite photocatalyst was prepared by using industrial titanium dioxide (TiO2) and Bismuth nitrate pentahydrate (Bi(NO3)3 · 5H2O) as raw materials.Sample's structures were characterized by XRD , XPS, FT-IR, UV-vis, PL spectrum, etc.The results show that the Bi3 Ti4 O12/α-Bi2 O3/TiO2 heterojunction structure is formed .The band gap decreases , the absorption band edge is red shifted , and the photocatalytic efficiency is obviously improved .The photocatalytic activity was tested for the degradation of methylene blue solution under visible light irradiation .The results show that the photocatalytic activity of La doped TiO 2/g-C3 N4 composite photocatalyst is remarkable when the ratio of commercial titanium dioxide and Bismuth nitrate pentahydrate is 1:2.5, the calcination temperature was 600 ℃and the calcination time was 5 h.Irradiated by 12 W LED with 180 min, the degradation rate of MB reaches 96.8％.关键词
Bi3Ti4O12/α-Bi2O3/TiO2复合光催化剂/亚甲基蓝/光催化Key words
Bi3 Ti4 O12/α-Bi2 O3/TiO2 composite photocatalyst/methylene/photocatalysis分类
化学化工引用本文复制引用
王瑞琪,徐海燕,吴四维,傅敏..Bi3Ti4O12/α-Bi2O3/TiO2复合光催化剂的制备及其可见光催化活性研究[J].人工晶体学报,2017,46(12):2386-2392,7.基金项目
重庆市教委项目(KJ120713,KJ1600624) （KJ120713,KJ1600624）
重庆市社会民生科技创新专项(cstc2016shmszx20012) （cstc2016shmszx20012）
重庆市高校优秀成果转化资助项目( KJZH17122 ) （ KJZH17122 ）
