title: Superhydrophilicity-assisted preparation of transparent and visible light activated N-doped titania film.
abstract: A novel and environmental friendly method was developed to prepare transparent, uniform, crack-free and visible light activated nitrogen doped (N-doped) titania thin films without the use of organic Ti precursors and organic solvents. The N-doped titania films were prepared from heating aqueous peroxotitanate thin films deposited uniformly on superhydrophilic uncoated glass substrates. The pure glass substrates were superhydrophilic after being heated at 500 degrees C for 1 h. Nitrogen concentrations in the titania films were adjusted by changing the amount of ammonia solution. The optimal photocatalytic activity of the N-doped titania films was about 14 times higher than that of a commercial self-cleaning glass under the same visible light illumination. The current reported preparative technique is generally applicable for the preparation of other thin films.
authors.affiliation: School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore.
authors.forename: Qing Chi
authors.initials: QC
authors.lastname: Xu
authors.forename: Diana V
authors.initials: DV
authors.lastname: Wellia
authors.forename: Rose
authors.initials: R
authors.lastname: Amal
authors.forename: Dai Wei
authors.initials: DW
authors.lastname: Liao
authors.forename: Say Chye Joachim
authors.initials: SC
authors.lastname: Loo
authors.forename: Timothy Thatt Yang
authors.initials: TT
authors.lastname: Tan
mesh_terms: D002384:Catalysis; D006863:Hydrogen-Ion Concentration; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D014025:Titanium; D009584:Nitrogen