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Indexed by:期刊论文

Date of Publication:2011-05-01

Journal:JOURNAL OF NANOPARTICLE RESEARCH

Included Journals:SCIE、EI

Volume:13

Issue:5

Page Number:2147-2155

ISSN No.:1388-0764

Key Words:Chemical co-precipitation; Calcination; Specific surface area; 4-Chlorophenol; Photocatalytic degradation; Catalysts

Abstract: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.