Structure and photocatalytic performance of K1−3x M x TiNbO5 (M = Fe, Ce) for ethyl mercaptan

Structure and photocatalytic performance of K1−3x M x TiNbO5 (M = Fe, Ce) for ethyl mercaptan Layered photocatalytic material K1−3x M x TiNbO5 (M = Fe, Ce) was prepared by the ion exchange of KTiNbO5 with M(NO3)3. The structure and spectral response of the as-prepared samples were characterized by powder X-ray diffraction (XRD), laser Raman spectroscopy (LRS) and UV-vis diffuse reflectance spectroscopy (UV-vis DRS). Photocatalytic activity was evaluated by oxidizing ethyl mercaptan under natural light and UV light irradiation. Results indicated that the spectral response feature and photocatalytic oxidation activity were directly affected by the feature of the interlayer cations, including the Coulomb force field and electronic configuration. It could be related with a significant interaction between the interlayer cations and the terminal N=O (N = Nb, Ti) bond in the NO6, octahedral unit in the laminate structure. Compared to K1−3x Fe x TiNbO5, K1−3x Nb x TiNbO5 shows a higher photocatalytic oxidation activity due to it has good adsorption ability for ethyl mercaptan and higher valance band potential. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Structure and photocatalytic performance of K1−3x M x TiNbO5 (M = Fe, Ce) for ethyl mercaptan

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Publisher
Pleiades Publishing
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427214100139
Publisher site
See Article on Publisher Site

Abstract

Layered photocatalytic material K1−3x M x TiNbO5 (M = Fe, Ce) was prepared by the ion exchange of KTiNbO5 with M(NO3)3. The structure and spectral response of the as-prepared samples were characterized by powder X-ray diffraction (XRD), laser Raman spectroscopy (LRS) and UV-vis diffuse reflectance spectroscopy (UV-vis DRS). Photocatalytic activity was evaluated by oxidizing ethyl mercaptan under natural light and UV light irradiation. Results indicated that the spectral response feature and photocatalytic oxidation activity were directly affected by the feature of the interlayer cations, including the Coulomb force field and electronic configuration. It could be related with a significant interaction between the interlayer cations and the terminal N=O (N = Nb, Ti) bond in the NO6, octahedral unit in the laminate structure. Compared to K1−3x Fe x TiNbO5, K1−3x Nb x TiNbO5 shows a higher photocatalytic oxidation activity due to it has good adsorption ability for ethyl mercaptan and higher valance band potential.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Jan 23, 2015

References

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