Journal
CERAMICS INTERNATIONAL
Volume 39, Issue 8, Pages 8633-8640Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.04.040
Keywords
TiO2; Fe2O3; Composite hollow microspheres; Template-assisted hydrothermal synthesis; Photocatalytic activity
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Funding
- National Natural. Science Foundation of China [51275213, 51102116]
- Jiangsu National Nature Science Foundation [BK2011534, BK2011480]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Open Project of Key Laboratory of Tribology of Jiangsu Province [Kjsmcx2011002, Kjsmcx1005]
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Novel alpha-Fe2O3/TiO2 composite hollow spheres were successfully synthesized by a template-assisted precipitation reaction using urea as a precipitating agent and carbon spheres as templates in a mixed solvent of water and ethanol, and then calcined at 400 degrees C for 4 h. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, nitrogen adsorption desorption isotherms, and vibrating sample magnetometer. The influence of calcination temperature and the molar ratio of titanium to iron (R) on the photocatalytic activity of the samples was investigated. The results indicated that the composite spheres show magnetic characteristics at room temperature and good photocatalytic activity under visible-light irradiation compare to the single-component alpha-Fe2O3 particles. This method can be further applied to synthesize nanocomposites of magnetic metal oxide and other metal oxide. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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