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Transparent visible light activated C-N-F-codoped TiO2 films for self-cleaning applications
Xu, Qing-Chi( Nanyang Technol Univ, Sch Chem & Biomed Engn) ; Wellia, Diana V.( Nanyang Technol Univ, Sch Chem & Biomed Engn) ; Sk, Mahasin Alam( Nanyang Technol Univ, Sch Chem & Biomed Engn) ; Lim, Kok Hwa( Nanyang Technol Univ, Sch Chem & Biomed Engn) ; Loo, Joachim Say Chye(Nanyang Technol Univ, Sch Mat Sci & Engn) ; Liao, Dai Wei ; Liao DW(廖代伟) ; Amal, Rose(Univ New S Wales, Sch Chem Sci & Engn) ; Tan, Timothy Thatt Yang( Nanyang Technol Univ, Sch Chem & Biomed Engn)
2009-12
关键词Self-cleaning TiO2 Visible light Carbon Nitrogen Fluorine
英文摘要The current work reports a potential technology for fabricating visible light activated doped TiO2 coatings for self-cleaning applications. Transparent C-N-F-codoped TiO2 films with enhanced visible light photocatalytic activity and non-light activated superwettability were successfully prepared by a simple layer-by-layer dip-coating method using TiO2 sol and NH4F methanol solution as precursors. The current coating method prevents the reactions of F- ions with the glass substrate and hence resulting in a uniform and transparent coating. It also creates TiO2 coating with high surface roughness without an additional pore-inducing agent and generates non-irradiated superhydrophilic surface. Contact angles of the C-N-F-codoped TiO2 films were 2.3-3.1 degrees in the absence of any illumination and they rose slowly in the dark (<1.8 degrees in 30 days). The C-N-F-codoped TiO2 films showed strong visible-light absorption and enhanced photocatalytic activity for stearic acid decomposition under visible light irradiation, which was 5 times higher than that of C-doped TiO2 film. Our DFT calculations also showed that increasing N:F doping ratio leads to band gap narrowing of TiO2. (C) 2009 Elsevier B.V. All rights reserved.; Nanyang Technological University AcRF Tier 1 [RG29/07]; NTU
语种英语
出版者ELSEVIER SCIENCE SA
内容类型期刊论文
源URL[http://dx.doi.org/doi:10.1016/j.jphotochem.2009.12.017]  
专题化学化工-已发表论文
推荐引用方式
GB/T 7714
Xu, Qing-Chi,Wellia, Diana V.,Sk, Mahasin Alam,et al. Transparent visible light activated C-N-F-codoped TiO2 films for self-cleaning applications[J],2009.
APA Xu, Qing-Chi.,Wellia, Diana V..,Sk, Mahasin Alam.,Lim, Kok Hwa.,Loo, Joachim Say Chye.,...&Tan, Timothy Thatt Yang.(2009).Transparent visible light activated C-N-F-codoped TiO2 films for self-cleaning applications..
MLA Xu, Qing-Chi,et al."Transparent visible light activated C-N-F-codoped TiO2 films for self-cleaning applications".(2009).
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