Please use this identifier to cite or link to this item:
|標題:||Photocatalysis and Catalytic Properties of Nano-sized N-TiO2 Catalyst Synthesized by Sol-gel Methods|
|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.|
|Appears in Collections:||期刊論文|
Show full item record
TAIR Related Article
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.