Synthesis of mesoporous nano-TiO_(2)doped with Sn by auto-assembly method and photo-catalytic property

查看全文 作　　者：ZHANG Meihong DING Shiwen WANG Zhenxing ZHANG [1]Yuzhuo 机构地区：[1]College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China 出　　处：《Science China Chemistry》索引2005年第48卷第5期,共6页 基　　金：supported by the Natural Science Foundation of Hebei Province,China(Grant No.200500097). 摘　　要：A series of mesoporous nano-TiO2 material doped with Sn are synthesized by a homogenous precipitation method aided by microwave heating, using TiCl4 and SnCl4 as raw materials, urea as precipitator, active carbon as templet, and soluble starch as anti- agglomer-ating reagent. XRD results show that the precursor exists in the amorphous phase, and trans-forms to anatase structure above 400℃. TEM results show that the particle is in spherical shape and the average diameter is 20 nm. EDS results show that the measuring value of compound is in accord with the actual value of the raw materials, and the doping uniformity is good. The photo-catalytic experimental results show that the highest photo-catalytic efficiency can be ob-tained when the content of Sn is 10% (mol pecent), and the decolorization rate of navy blue dye can be as high as 100% after being illuminated by sunlight for 70 min. The photo-catalytic reac-tion is a first-order kinetic reaction. 关 键 词：NANO-TIO2 DOPED with Sn, microwave synthesis, template control, HOMOGENOUS precipitation, MESOPOROUS material, photo-catalysis.