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Synthesis and Characterization of TiO2 Doped ZnO Microtubes
Yan Li*
Author NameAffiliationE-mail
Yan Li* College of Science, Civil Aviation University of China, Tianjin 300300, China liyan199@163.com 
Abstract:
The TiO2-doped ZnO microtubes have been successfully fabricated via a wet chemicalmethod, using zinc chloride and titanium sulphate as the starting materials. The as-synthesized products were characterized by X-ray diffraction, field emission scanning electronmicroscopy and room temperature photoluminescence measurement. The photocatalytic ac-tivity 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 Ti4+ 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, Ti3O5 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 effcient in degrading organic dyes of methyl orange and are well identical with its PL properties and the crystallinity.
Key words:  Zinc oxide, Titanium oxide, Doping, Photocatalysis, Photoluminescence
FundProject:
Synthesis and Characterization of TiO2 Doped ZnO Microtubes
李酽*
摘要:
以氯化锌和硫酸钛为原料,通过湿化学法成功制备了钛掺杂氧化锌微米管. 以粉末X射线衍射仪、场发射扫描电子显微镜、光致发光系统对样品进行了表征. 结果表明,未经掺杂的氧化锌微管具有良好的六方中空结构. 在TiO2/ZnO比率小于5%时,钛掺杂和未掺杂氧化锌管具有相近的尺度,外表光滑,近于圆柱形. 当TiO2/ZnO比率大于5%时,生成一种由ZnO, Ti3O5和TiO组成的多相混合物. 钛掺杂氧化锌在光催化降解甲基橙溶液效果明显.
关键词:  氧化锌,氧化钛,掺杂,光催化,光致发光
DOI:10.1088/1674-0068/23/03/358-362
分类号: