Photocatalytic properties of BiOX(X=Cl,Br,and I)
来源期刊：Rare Metals2008年第3期
论文作者：AN Huizhong DU Yi WANG Tianmin WANG Cong HAO Weichang ZHANG Junying Center of Condensed Matter and Materials Physics,School of Science,Beihang University,Beijing ,China
文章页码：243 - 250
摘 要：<正>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 O2 for 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.
摘要：<正>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 O2 for 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.
关键词：
