Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 13, Issue 5, Pages 2147-2155Publisher
SPRINGER
DOI: 10.1007/s11051-010-9973-7
Keywords
Chemical co-precipitation; Calcination; Specific surface area; 4-Chlorophenol; Photocatalytic degradation; Catalysts
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Funding
- National Nature Science Foundation of China [20877013, 20837001]
- National High Technology Research and Development Program of China (863 Program) [2007AA061402]
- Major State Basic Research Development Program of China (973 Program) [2007CB613306]
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In this study, nanocrystalline CoFe2O4 particles with porous timber-like superstructure were synthesized by a modified chemical co-precipitation route with calcination temperatures of 573, 673, 773, 873, and 973 K, respectively. The structural properties of the samples were systematically investigated by X-ray powder diffraction, scanning electronic microscopy, energy-dispersive X-ray spectra, UV-Vis diffuse reflectance spectroscopy, and Fourier transform infrared spectroscopy techniques. The photo-induced charge separation in the samples was demonstrated by surface photovoltage (SPV) measurement. The photocatalytic performances of the CoFe2O4 samples were comparatively studied by the degradation of 4-chlorophenol under Xe lamp irradiation. The results indicated that the sample calcined at 673 K exhibited the highest photocatalytic efficiency among the five samples.
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