WO3·0．33H2O及其与石墨插层复合材料的光催化性能研究  

Photocatalytical performance research of WO_3·0.33H_2O/graphite intercalated nano-composites

作　　者：叶爱玲[1] 贺蕴秋[1] 陈小刚[1] 

机构地区：[1]同济大学材料科学与工程学院,无机非金属材料研究所,上海200092

出　　处：《功能材料》2009年第10期1670-1674,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50672066)

摘　　要：制备了WO3.0.33H2O及其插层石墨的复合材料(GIW),对材料进行了相应的表征,并比较了WO3.0.33H2O和石墨插层复合材料的光催化性能,发现WO3.0.33H2O石墨插层复合材料在紫外光下具有较之WO3.0.33H2O更优越的光催化性能。通过XRD、XPS、FT-IR、HRTEM等测试手段,分析了WO3.0.33H2O和GIW的晶相、微观结构,结果表明插层材料保持了WO3.0.33H2O的晶相,且WO3.0.33H2O被层状石墨包覆,有利于电子的转移;伏安循环法测试材料的氧化还原电位表明插层材料具有更负的导带位置。A novel photo catalyst WO3·0.33H2O/graphite intercalated nano-composite（GIW） was prepared via mixing tungsten, graphite oxide and H2O2 in a water bath below 100℃. The photo-catalyst samples were characterized by X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS）, FT-IR analysis, high resolution transmission electron microscope （HRTEM）, cyclic voltammetry （CV）. The UV-visible photo-activity was evaluated through the photo degradation of methyl orange in aqueous solution and a much higher efficiency of GIW. Results showed that the oxidation-reduction potential of GIW is higher than WO3·0.33H2O. The increased photo-activity is due to their different oxidation-reduction potentials. What＇s more, the layer-structural graphite of GIW improved its conductivity and slowed down the recombination of careers.

关 键 词：WO3·0.33H2O 石墨插层 光催化 能带 

分 类 号：TB34[一般工业技术—材料科学与工程]