Nair Ranjith » Публикация
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Опубликовано
2011-03-23
Опубликовано на SciPeople2011-03-31 07:59:12
ЖурналEnvironmental Progress and Sustainable Energy
Impact of Ti-V Ratio on the Crystalline Phase/Visible Light Activity of TiV-Oxide Photocatalyst
Аннотация
TiV-oxide photocatalysts were synthesized through
sol–gel technique for different Ti:V ratio. They were characterized using XRD, SEM, EDAX, UV-Vis-DRS, photoluminescence, and FTIR studies. The systems with high Ti:V ratio showed a mixed phase while with low ratio a rutile phase. The sizes of the particles were between 20 and 30 nm showing an increase with change in phase from mixed to rutile. The reflectance spectrum showed a red-shift in the optical response covering a large portion of visible spectrum.Interestingly, both mixed and rutile phases showed visible light activity in the photodegradation of methylene blue under laboratory conditions. However,mixed-phase catalyst showed high activity in terms of rate of degradation and photonic efficiency.
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