Enhanced photocatalytic activity of TiO2 assisted by Nb, N and S multidopants
作者： Sachin G. Ghugal , Suresh S. Umare , Rajamma Sasikala
DOI: 10.1016/J.MATERRESBULL.2014.10.006
关键词: Absorption edge 、 Photodegradation 、 Inorganic chemistry 、 Doping 、 Visible spectrum 、 Dopant 、 Anatase 、 Materials science 、 Methyl orange 、 Photocatalysis
摘要: Abstract A novel visible light active photocatalyst is synthesized by doping TiO 2 with multiple dopants like Nb, N and S. exists as anatase phase the particle size in range of 10–25 nm. significant red shift absorption edge increased shown multidoped compared to undoped . The tri-doped has highest activity for photodegradation methyl orange shows order: 0.6NbNS–TiO > P25 > 0.6Nb–TiO > NS–TiO > pristine enhanced photocatalytic due reduction band gap enhancement lifetime photogenerated charge carriers. This catalyst found be stable only a marginal decrease observed upto 3 cycles. Experiments quenchers suggest that all super oxide, hydroxyl radicals holes are species oxidation reaction.
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