Superhydrophilicity-assisted preparation of transparent and visible light activated N-doped titania film.
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.
Xu
Qing Chi
QC
School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore.
Wellia
Diana V
DV
Amal
Rose
R
Liao
Dai Wei
DW
Loo
Say Chye Joachim
SC
Tan
Timothy Thatt Yang
TT
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*
C009495:titanium dioxide; D014025:Titanium; D009584:Nitrogen