Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/69297
標題: Photocatalysis and Catalytic Properties of Nano-sized N-TiO2 Catalyst Synthesized by Sol-gel Methods
作者: Lin, Y.T.
Weng, C.H.
Tzeng, T.W.
關鍵字: Nitroen-doped TiO2
nanoparticles
solar photocatalysis
calcination
temperature
ethylene
n-doped tio2
mesoporous titania
nitrogen
oxidation
nanoparticles
powders
films
期刊/報告no:: Journal of Advanced Oxidation Technologies, Volume 13, Issue 3, Page(s) 297-304.
摘要: Nitrogen-doped TiO2 nanoparticles were prepared by sol-gel method and characterized by XRD, BET, TG-DTA, FE-SEM, DLS, DRS, and XAS. UV-vis diffuse reflectance spectra showed that nitrogen doped TiO2 exhibited obvious absorption in visible light range. With increasing calcination temperature, (1) the nitrogen adsorption-desorption isotherms shifted from a combination of types I and IV to type V; (2) the hysteresis loops shifted to the region of higher relative pressure, and the areas of the hysteresis loop decreased; (3) the pore size increased and pore volume decreased; (4) the absorbance increased; (5) the peak at 396.4 eV (O-Ti-N linkages within the crystalline lattice) increased; (6) calcination temp. > 600 degrees C, the peak at 396.4 eV decreased. With the increase in calcination temperature, the photocatalytic activity increased at first and then decreased. When the calcination temperature was at 600 degrees C, the photo-degradation rate was the highest. The substitutional N, the crystalline phase and the size of N-doped TiO2 are the predominant factors to improve the photocatalytic activity of C2H4 degradation.
URI: http://hdl.handle.net/11455/69297
ISSN: 1203-8407
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