Visible Light Photocatalytic Properties of Metastable γ-Bi_2O_3 with Different Morphologies  

作　　者：Weichang Hao Yuan Gao Xi Jing Wen Zou Yan Chen Tianmin Wang 

机构地区：[1]Center of Materials Physics and Chemistry,Beihang University [2]Institute for Superconducting and Electronic Materials,University of Wollongong

出　　处：《Journal of Materials Science & Technology》2014年第2期192-196,共5页材料科学技术（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.51072012 and51272015)

摘　　要：The metastable γ-Bi2O3 photocatalysts with different morphologies were fabricated by means of a chemical precipitation method. The microstructure of as-prepared samples was characterized by X-ray diffraction, transmission electron microscopy and ultraviolet-visible diffusion reflectance spectroscopy. The photocatalytic performance of Bi2O3 powder was evaluated using rhodamine B as a model pollutant under visible light irradiation. The visible light photocatalytic activity of Bi2O3 with different morphologies is as follows, nanorod 〉 nanorod/nanoflake 〉 N doped TiO2 〉 irregular particle 〉 agglomerated particle. The γ-Bi2O3 shows the best photocatalytic performance and it can effectively degrade 97% RhB within 60 min.The metastable γ-Bi2O3 photocatalysts with different morphologies were fabricated by means of a chemical precipitation method. The microstructure of as-prepared samples was characterized by X-ray diffraction, transmission electron microscopy and ultraviolet-visible diffusion reflectance spectroscopy. The photocatalytic performance of Bi2O3 powder was evaluated using rhodamine B as a model pollutant under visible light irradiation. The visible light photocatalytic activity of Bi2O3 with different morphologies is as follows, nanorod 〉 nanorod/nanoflake 〉 N doped TiO2 〉 irregular particle 〉 agglomerated particle. The γ-Bi2O3 shows the best photocatalytic performance and it can effectively degrade 97% RhB within 60 min.

关 键 词：γ-Bi2O3 Visible light Photocatalytic properties MORPHOLOGY 

分 类 号：TQ135.32[化学工程—无机化工]