Enhanced photoactivity of antimony phosphates by substitution of H+, Cu2+ and N3− in the K3Sb3P2O14·xH2O crystal lattice

Enhanced photoactivity of antimony phosphates by substitution of H+, Cu2+ and N3− in the... Substitutional doping of framework heteroatoms in photocatalysis is one of the approaches for harvesting visible light. Tunnel structure potassium antimony phosphate (K3Sb3P2O14·xH2O) and Cu2+, H+ , and N3- substituted K3Sb3P2O14·xH2O were prepared. These materials were characterized by powder X-ray diffraction, energy dispersive spectra, infrared spectra, and UV–Vis diffuse reflectance spectra. All these compositions were crystallized in the rhombohedral crystal lattice with $$R\overline{3} m$$ R 3 ¯ m space group. The absorption edges of doped compositions were shifted to longer wavelength region considerably upon substitution of Cu2+, H+ , and N3−. The photocatalytic activity of these materials was tested against the degradation of methyl violet. The higher visible light photocatalytic activity of doped K3Sb3P2O14·xH2O compositions compared to parent material was discussed. N3−-doped K3Sb3P2O14·xH2O photocatalyst is stable even after the fourth cycle of photodegradation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Enhanced photoactivity of antimony phosphates by substitution of H+, Cu2+ and N3− in the K3Sb3P2O14·xH2O crystal lattice

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-015-2402-x
Publisher site
See Article on Publisher Site

Abstract

Substitutional doping of framework heteroatoms in photocatalysis is one of the approaches for harvesting visible light. Tunnel structure potassium antimony phosphate (K3Sb3P2O14·xH2O) and Cu2+, H+ , and N3- substituted K3Sb3P2O14·xH2O were prepared. These materials were characterized by powder X-ray diffraction, energy dispersive spectra, infrared spectra, and UV–Vis diffuse reflectance spectra. All these compositions were crystallized in the rhombohedral crystal lattice with $$R\overline{3} m$$ R 3 ¯ m space group. The absorption edges of doped compositions were shifted to longer wavelength region considerably upon substitution of Cu2+, H+ , and N3−. The photocatalytic activity of these materials was tested against the degradation of methyl violet. The higher visible light photocatalytic activity of doped K3Sb3P2O14·xH2O compositions compared to parent material was discussed. N3−-doped K3Sb3P2O14·xH2O photocatalyst is stable even after the fourth cycle of photodegradation.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jan 14, 2016

References

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