Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 576, Issue -, Pages 5-12Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.04.092
Keywords
Perovskite; Hollow; Low temperature; Colloids template; Photodegradation
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Funding
- National Natural Science Foundation of China [21071002, 21275006]
- Anhui Provincial Education Department [KJ2013A029]
- Natural Science Foundation of Anhui Province [11040606Q02, 11040606M34]
- 211 project of Anhui University
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Hollow perovskite-type LaCoO3 was successfully fabricated by surface-ion adsorption method utilizing the carbonaceous colloids as template under relatively low calcination temperature. Carbonaceous colloids not only acted as templates but also offered internal heat source during calcination process. The impact of calcined temperature and time on the structure and morphology of the product were studied and the possible formation process of perovskite-type LaCoO3 hollow spheres was illustrated. The obtained product was characterized by SEM, TEM, XRD, TG-DSC, ICP-OES, BET and UV-visible absorption spectra. The photocatalytic activities for degradation of methylene blue, methyl orange and neutral red were tested. The good photocatalytic degradation activity of the three different dyes and the band gap of 2.07 eV make it a promising candidate material for photocatalytic applications. (C) 2013 Elsevier B.V. All rights reserved.
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