Synthesis and photocatalytic properties of SiO2/CdO/CdS nanocomposite materials

Synthesis and photocatalytic properties of SiO2/CdO/CdS nanocomposite materials SiO2/CdO/CdS composites were synthesized in two stages. In the first stage, a SiO2/CdO composite with a large specific surface area (130–160 m2 g−1) was produced by the sol-gel method. In the composite, crystalline CdO nanoparticles with cubic lattice and crystallite sizes of 8–15 nm were formed in mesoporous amorphous SiO2. In the second stage, powders of this composite were kept in an aqueous solution saturated with H2S. As a result, oxygen was substituted with sulfur in CdO particles absorbed on the SiO2 surface and CdS or CdO@CdS particles were formed, whereas in closed pores or those covered with a SiO2 layer, CdO particles remained unchanged. Te photocatalytic activity of the resulting SiO2/CdO/CdS composite was demonstrated for the example of decomposition of Nile Blue dye under irradiation with UV (λ = 365 nm) and visible light and generation of hydrogen under irradiation of a 10: 1 water-methanol mixture with light at λ = 400 nm. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Synthesis and photocatalytic properties of SiO2/CdO/CdS nanocomposite materials

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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/S1070427214110044
Publisher site
See Article on Publisher Site

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