[Spectral studies on nano-sized titania photocatalysts prepared by different drying methods].
Nano-sized TiO2 photocatalysts were prepared by drying the ethanol gel of titanium tetrabutoxide through natural state, supercritical ethanol, supercritical carbon dioxide drying methods and characterized by XRD, FTIR spectroscopy, FT-Raman spectroscopy and fluorescent spectroscopy, respectively. We regard degradation of rhodamine B by photocatalyst as a model reaction, and compare photocatalytic activities of samples obtained. The experimental results show that different drying methods have strong effect on crystal structure, energy band structure, optical adsorption property, surface quality and photocatalytic activity, TiO2 photocatalyst prepared by supercritical carbon dioxide drying method has superior photocatalytic activity.
Ye
Zhao
Z
College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350002, China.
Zhang
Han-hui
HH
Pan
Hai-bo
HB
Pan
Hong-qing
HQ
D002384:Catalysis; D036103:Nanotechnology; D010777:Photochemistry; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D014025:Titanium / Q000737:chemistry*
C009495:titanium dioxide; D014025:Titanium