Combustion synthesis and photocatalytic properties of magnetically separable Zn1-x Cd x S/ gamma -Fe2O3 composites

Magnetically separable Zn1-x Cd x S/ gamma -Fe2O3 (x=0-1) photocatalysts were synthesized by a one-step combustion method. The structures, morphologies, absorbance, optical and photocatalytic properties of the samples were studied by X-ray powder diffraction, scanning electron microscopy, transmissi...

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Bibliographic Details
Published in:Materials letters 2014-09, Vol.130, p.94-96
Main Authors: Liu, Jianxiu, Zhang, Dafeng, Pu, Xipeng, Dong, Daoyou, Cai, Peiqing, Seo, Hyo Jin
Format: Article
Language:English
Subjects:
Absorbance
Cadmium
Combustion
Combustion synthesis
Energy bands
Magnetic properties
Photocatalysis
Scanning electron microscopy
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Summary:Magnetically separable Zn1-x Cd x S/ gamma -Fe2O3 (x=0-1) photocatalysts were synthesized by a one-step combustion method. The structures, morphologies, absorbance, optical and photocatalytic properties of the samples were studied by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, ultraviolet-visible spectrophotometry and photoluminescence. The experimental results show that the formation of hexagonal Zn1-x Cd x S and gamma -Fe2O3 and the combination of them were one-pot achieved. The Cd2+ content has a significant influence on the absorbance of visible light and fluorescence properties. The magnetic properties of samples ensure the magnetic separation by using a magnet. CdS/ gamma -Fe2O3 shows the best photocatalytic performance compared with other samples, ascribed to its small energy band gap and matching energy band structure between CdS and gamma -Fe2O3. Moreover, no obvious deterioration was observed in the stability tests.
ISSN:0167-577X
DOI:10.1016/j.matlet.2014.05.094