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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