Synthesis and Characterization of TiO2 Doped ZnO Microtubes  

钛掺杂氧化锌微管的合成与表征

作　　者：李酽[1] 

机构地区：[1]中国民航大学理学院,天津300300

出　　处：《Chinese Journal of Chemical Physics》2010年第3期358-362,I0002,共6页化学物理学报（英文）

摘　　要：The TiO2-doped ZnO microtubes have been successfully fabricated via a wet chemical method, using zinc chloride and titanium sulphate as the starting materials. The assynthesized products were characterized by X-ray diffraction, field emission scanning electron microscopy and room temperature photoluminescence measurement. The photocatalytic activity in degrading methyl orange was measured with a UV-Vis spectrophotometer. The pure ZnO microtubes exhibit an exact hexangular hollow structure with a diameter of about 700 nm, a length of 3 μm and a wall thickness of about 40 nm. The TiO2-doped ZnO microtubes with TiO2/ZnO ratio less than 5% have the same dimension with the pure ZnO microtubes, a smooth column shape, not a hexangular structure. The growth of ZnO may be inhibited by the more Ti^4＋ doped into ZnO structure to achieve a small dimension or a multiphase. The crystallinity of ZnO microtubes decreases with increasing TiO2 content, and then a multiphase containing ZnO, Ti305 and TiO occur when the TiO2/ZnO ratio is more than 5%. The UV emission intensity of the TiO2-doped ZnO obviously increases and then tends to decrease with TiO2/ZnO ratio increasing. The photocatalytic properties of the TiO2-doped ZnO microtubes are very efficient in degrading organic dyes of methyl orange and are well identical with its PL properties and the crystallinity.

关 键 词：Zinc oxide Titanium oxide DOPING PHOTOCATALYSIS PHOTOLUMINESCENCE 

分 类 号：O[理学]