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Investigation of cation (Sn2+) and anion (N3−) substitution in favor of visible light photocatalytic activity in the layered perovskite K2La2Ti3O10 by Vinod Kumar; Govind; S. Uma is a Environmental Science article available to read on EtoBox.
What is Investigation of cation (Sn2+) and anion (N3−) substitution in favor of visible light photocatalytic activity in the layered perovskite K2La2Ti3O10 about?
Noticeable lowering of the energy gaps have been achieved for the layered perovskite K 2 La 2 Ti 3 O 10 as a result of the attempts made to incorporate Sn 2+ and N 3-ions. Incorporation of Sn 2+ ions was carried out by the ion-exchange reaction of K 2 La 2 Ti 3 O 10 with aqueous tin(II) chloride solution. Nitrogen incorporation was attempted by the solid state reaction of the parent oxide with urea around 400 • C in air. The resultant oxides have been characterized by power X-ray diffraction, UV-visible diffuse reflectance spectroscopy, and Fourier transform infrared spectroscopy. Room temperature ion-exchange was sufficient to introduce Sn 2+ ions with the resulting product of composition (Sn 0.45 K 0.2 H 0.9 )La 2 Ti 3 O 10 •H 2 O. Visible light absorption was observed with the absorption edge red shift of ∼100 nm from that of the parent K 2 La 2 Ti 3 O 10 . The lowering of the band gap was as expected by the contribution of Sn 5s orbitals to the O 2p orbitals in the formation of the valence band. Nitridation using urea resulted not only in nitrogen doping but with the additional sensitization by the presence of carbon nitride (CN) polymers, which again resulted in visible light
Who reads Investigation of cation (Sn2+) and anion (N3−) substitution in favor of visible light photocatalytic activity in the layered perovskite K2La2Ti3O10?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Vinod Kumar; Govind; S. Uma
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-3894)
- Published
- 2011
- Language
- EN
- Field
- Environmental Science (Physical Sciences)