一种新的光催化剂Bi_(36)Fe_2O_(57)的合成及光催化性能研究  

Synthesis and photocatalytic performance of a new photocatalyst Bi_(36)Fe_2O_(57)

作　　者：王康康[1] 王晓昌[1] 谢会东[1] 

机构地区：[1]西安建筑科技大学理学院,陕西西安710055

出　　处：《应用化工》2011年第12期2084-2086,2125,共4页Applied Chemical Industry

基　　金：国家自然科学基金重点项目(51021140002);中国博士后基金(20100481324)

摘　　要：报道了一种新型光催化剂Bi36Fe2O57的一种改进的共沉淀合成方法,对不同条件下制备的产物进行了X射线衍射物相分析、扫描电镜形貌分析和光催化性能测试。物相分析表明,缓冲溶液在制备单相Bi36Fe2O57粉体中起着重要作用。紫外可见漫反射谱图表明,Bi36Fe2O57粉体的禁带宽度约为2.06 eV,中性缓冲溶液条件下合成的Bi36Fe2O57产物结晶性好,在金卤灯下照射3 h,对甲基橙的降解率可达82.7%,在紫外灯下照射2.5 h降解率达到99.3%。A new photocatalyst,Bi36Fe2O57 was synthesized by an improved copreeipitation method. As- prepared products under different conditions were analyzed by X-ray powder diffraction, scanning electron microscope and photocatalytic tests. Phase analysis results showed that buffer solutions played an important role in the preparation of single phase of Bi36Fe2O57. UV-Vis diffuse spectra showed that the band gap of Bi36Fe2O57 was 2.06 eV. The degradation percent of methyl orange by Bi36Fe2O57 prepared by neutral buffer solution reached 82.7% under metal halide light irradiation for 3 h, and 99.3% under UV light irradiation for 2.5 h

关 键 词：Bi36Fe2O57 共沉淀法 光催化 缓冲溶液 

分 类 号：TQ420.62[化学工程] O611.4[理学—无机化学]