Paper Title :Removal of Aromatic Hydrocarbon Pollutants Using Visible Light-Activated Titania Codoped with Nitrogen and Iron
Author :Wan-Kuen Jo, Joon Yeob Lee, Yeong Gyeong Kim, Migyeong Kim, Dong Jin Kim
Article Citation :Wan-Kuen Jo ,Joon Yeob Lee ,Yeong Gyeong Kim ,Migyeong Kim ,Dong Jin Kim ,
(2017 ) " Removal of Aromatic Hydrocarbon Pollutants Using Visible Light-Activated Titania Codoped with Nitrogen and Iron " ,
International Journal of Advances in Science, Engineering and Technology(IJASEAT) ,
pp. 67-71,
Volume-5, Issue-4, Spl. Iss-1
Abstract : N- and Fe-codoped TiO2 composites (N-Fe-TiO2) with different mixing proportions were synthesized using a
facile sol-gel process, and the improvement in their performance was evaluated for the decomposition of gaseous
monocyclic aromatic hydrocarbons under visible light illumination. The synthesized samples were characterized using X-ray
diffraction techniques, energy-dispersive X-ray analysis, Fourier transform infrared spectroscopy, and UV-visible
spectroscopy. The photocatalytic activity of two N-Fe-TiO2 samples with suitable TiO2:N:Fe proportions were superior to
those of N doped TiO2 (N-TiO2) samples, which were in turn higher than those of pure TiO2. Specifically, the average
decomposition efficiencies of N-Fe-TiO2-0.1 for benzene, toluene, ethyl benzene, and o-xylene were 25%, 82%, 97%, and
~100%, respectively, while the respective values for N-TiO2 were 19%, 52%, 73%, and 78%. In addition, the average
efficiencies of pure TiO2 were ~0%, 4%, 13%, and 32%, respectively. The photocatalytic activity of the N-Fe-TiO2 samples
increased as the Fe contents decreased, while it increased with increasing retention time. However, the reaction rates of
benzene, toluene, ethyl benzene, and o-xylene decreased, as the retention time increased. Over all, the N-Fe-TiO2 composites
with optimal mixing proportions could be efficiently applied for the degradation of monocyclic aromatic hydrocarbons under
visible light illumination.
Keywords - Gas phase, Optimal ratio, N,Fe-Doped, Degradation rate.
Type : Research paper
Published : Volume-5, Issue-4, Spl. Iss-1
DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-10074
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Copyright: © Institute of Research and Journals
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Published on 2018-01-24 |
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