Preparation of Surface-modified TiO2 Nanoflower Film as Efficient Visible-active Photocatalysts
The TO2 films were synthesized on Ti substrates by a novel method. Titanium metal was directly oxidized by hydrogen peroxide to generate a rough amorphous film and then hydrothermal process transformed the film to crystalline nanoflower TiO2 film. The obtained film can be modified by calcination with urea and the modified film can keep the nanoflower structure. According to the XPS data, the urea-induced modification is surface-modification rather than Ndoping. Compared to the un-modifird film, the response scope of the modified film extends to the visible light region. Photocatalytic activity of films were investigated by degrading methyl orange (MO) under visible light. As a result, 47％ of MO was decomposed by modified film in 3 hours.
titanium titania hydrogen peroxide urea nanoflower visible-active photocatalysts
Yahui Wu Mingce Long Chao Chen
State Key Laboratory of Urban Water Resource and Environment,and School of Civil and Environmental E School of Environmental Science and Engineering,Shanghai Jiao Tong University,Dong Chuan Road 800,Sh
国际会议
the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)
三亚
英文
406-411
2011-03-25（万方平台首次上网日期，不代表论文的发表时间）