A Series of Bi-based Oxychlorides as Efficient Photocatalysts

摘要：

　　A series of layered-structure Bi-based oxychlorides such as BiOCl,Bi3O4Cl,Na0.5Bi1.5O2Cl,Bi4NbO8Cl and MBiO2Cl (M=Ca,Sr,Ba,Cd,Pb) used as efficient photocatalysts.Among them,Bi3O4Cl (Eg =2.79 eV),Na0.5Bi1.5O2Cl (Eg =3.03 eV),Bi4NbO8Cl (Eg =2.38 eV) and PbBiO2Cl (Eg =2.45 eV) are visible-light-responsive.The powders synthesized by solid state reactions were characterized by X-ray diffraction (XRD) and UV-Vis diffuse reflection spectrum.Their photocatalytic activities were evaluated by the degradation of methyl orange.The results generally show that the UV-induced photocatalytic performances of the novel oxychloride catalysts are better than or comparable to that ofanatase TiO2.The high photocatalytic performance of Bi-based oxychlorides is mainly ascribed to the presence of strong internal static electric fields between layers.

关键词： Photocatalysis Oxychloride TiO2 Methyl orange

作者: Xin-Ping Lin Fu-Qiang Huang Wen-Deng Wang Zhi-Chao Shan Jian-Lin Shi

作者单位: State Key Laboratory of High Performance Ceramics and Superfine Microstructures,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,P.R.China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1503-1506

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）