Hydrothermal Synthesis and Photocatalytic Properties of Nano Bi2WO6/TiO2 Powers
Using Bi(NO3)3·5H2O,Na2WO4·2H2O and Ti·(OC4H9)4 as the main raw materials,different alcohol solvent as medium,hexamethylene tetramine as sink set agent,tungsten bismuth and titanium dioxide composite powder were prepared by hydrothermal synthesis.It was characterized by XRD and DRS.The methyl orange imitated sewage,we study the impacts of calcinations temperature,catalyst amount,concentration,illumination time and pH on photocatalytic performance of Bi2WO6/TiO2 samples under visible light.The results showed that calcinations temperature 400 ℃ was the best,because the forbidden band gap decreased with temperature increased,but phase transition or decomposition exothermic of the samples would occurre at higher than 400 degree.The Bi2WO6/TiO2 prepared under acidic condition had only 2.41 eV as the smallest forbidden band gap of the samples.
Bi2WO6 TiO2 Hydrothermal method Photocatalytic
CHEN Haifeng YAN Ting
Department ot Materials & Chemistry, Huzhou Teachers College
国际会议
广州
英文
473-476
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）