Photocatalytic properties of BiOX(X=Cl,Br,and I)

被引：32
|
作者：
AN Huizhong DU Yi WANG Tianmin WANG Cong HAO Weichang ZHANG Junying Center of Condensed Matter and Materials Physics
机构：
来源：
Rare Metals | 2008年 / 03期
关键词：
photocatalysis; rhodamine B; isopropanol; O2; evolution; BiOCl; BiOBr; BiOI;
D O I：
暂无
中图分类号：
TG115 [金属的分析试验（金属材料试验）];
学科分类号：
080502 ;
摘要：
A novel series of photocatalysts,bismuth oxyhalide(BiOX,X =Cl,Br,and I),were synthesized by a hydrolysis method.The powder sam- pies were characterized by the use of X-ray diffraction(XRD),scanning electron microscope,and UV-Vis spectrophotometer.The XRD pattern showed that all the BiOX were well crystallized in the tetragonal structure.The band gaps of the sheet-shaped compounds BiOX(X= Cl,Br,and I)were 3.44,2.76,and 1.85 eV,respectively.BiOBr showed the highest photocatalytic activity in degrading rhodamine B(RhB) and evolving Ofor its proper valence band(VB).BiOI has no photocatalytic activity.BiOCl showed the highest activity in decomposing isopropanol because of electron-hole pair separation through trapping electrons by oxygen vacancies.
引用
收藏
页码：243 / 250
页数：8
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