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Impact of Ti‐V ratio on the crystalline phase/visible light activity of TiV‐oxide photocatalyst
Author(s) -
Nair Ranjith G.,
Tripathi A.M.,
Samdarshi S.K.
Publication year - 2012
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.10539
Subject(s) - rutile , photodegradation , photocatalysis , visible spectrum , materials science , methylene blue , phase (matter) , photoluminescence , fourier transform infrared spectroscopy , mixed oxide , oxide , nuclear chemistry , analytical chemistry (journal) , catalysis , chemical engineering , chemistry , optoelectronics , metallurgy , chromatography , organic chemistry , engineering
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. © 2011 American Institute of Chemical Engineers Environ Prog, 2012