Effect of heat treating process on phase transformation and photocatalytic activity of Zn-doped nano-titania

Micro & nano letters

article

Tana Bao¹  Xiao Tian¹  Gerile Naren¹  Tegus Ojiyed¹ 

[1]College of Physics and Electronic Information, Inner Mongolia Normal University

[2]Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University

关键词: X-ray diffraction;    sol-gel processing;    semiconductor growth;    solid-state phase transformations;    sintering;    nanofabrication;    nanoparticles;    zinc;    semiconductor materials;    transmission electron microscopy;    semiconductor doping;    titanium compounds;    heat treatment;    photocatalysis;    gels;    crystal microstructure;    heat treating process;    phase transformation;    photocatalytic activity;    Zn-doped nanotitania;    nanopowders;    sintering temperature;    powder X-ray diffraction;    high-resolution transmission electron microscopy;    zinc-doped TiO2 gels;    microstructure;    photochemical reactions instrument;    anatase-rutile transition;    temperature 700.0 degC;    temperature 400.0 degC;    TiO2Zn;    TiO2;   

DOI  :  10.1049/mnl.2019.0729

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The undoped titanium dioxide (TiO 2 ) and zinc-doped TiO 2 gels were prepared by sol–gel method. The nano-TiO 2 powders were prepared by controlling the sintering temperature. The phase compositions of the sintered samples were analysed by powder X-ray diffraction; the microstructure was analysed by high-resolution transmission electron microscope; the photocatalytic activity was analysed by photochemical reactions instrument. The combined action of Zn 2+ doping and heat treatment on phase transformation and photocatalytic performance of TiO 2 were analysed. The results show that, when the Zn ion doping amount is within 1–5 mol%, it promotes the conversion of anatase to rutile transition as the presence of ZnTiO 3. The photocatalytic performance of TiO 2 sintered at 700°C is better than sintered at 400°C.

【 授权许可】

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