无机材料学报2012，Vol.27Issue(7)：687-692,6.DOI:10.3724/SP.J.1077.2012.11490
γ-Bi2O3/TiO2复合纤维的制备及光催化性能
Preparation and Photocatalytic Properties of γ-Bi2O3/TiO2 Composite Fibers
摘要
Abstract
Heterostructured γ-Bi2O3/TiO2 composite fibers were prepared via combination of solvothermal method and electrospinning technique. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscope (EDS), transmission electron microscope (TEM), high-resolution transmission electron microscope (HRTEM) and UV-Vis absorption spectra were used to characterize heterostructured γ-Bi2O/TiO2 composite fibers. The photocatalytic properties of the heterostructured samples were evaluated by degrading rhodamine B (RB) under visible light irradiation. The results showed that γ-Bi2O3 nanosheets could evenly grow on the TiO2 fibers surface and thus heterostructured γ-Bi2O/TiO2 composite fibers were successfully obtained. The absorption range of the as-obtained heterostructured samples were extended to the visible light region. Moreover, the presence of γ-Bi2O3 nanostructures/TiO2 fibers heterostructures was beneficial to separation of photo-generated electrons and holes which enhanced the system's quantum efficiency. In comparison with that of pure TiO2 nanofibers, the γ-Bi2O/TiO2 heterostructures have enhanced photocatalytic efficiency under visible light irradiation, and the decolorizing efficiency of RB solution can reach 87.8%.关键词
静电纺丝/溶剂热法/γ-Bi2O3/TiO2复合纤维/光催化Key words
electrospinning/ solvothermal method/ ?-Bi2O3/TiO2 composite fibers/ photocatalytic degradation分类
化学化工引用本文复制引用
李跃军,曹铁平,邵长路,王长华..γ-Bi2O3/TiO2复合纤维的制备及光催化性能[J].无机材料学报,2012,27(7):687-692,6.基金项目
国家自然科学基金(50572014,50972027) （50572014,50972027）
教育部新世纪优秀人才支持计划(NCET-05-0322) （NCET-05-0322）
吉林省科技发展计划(201205034) （201205034）
