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论文类型：期刊论文

发表时间：2011-05-01

发表刊物：JOURNAL OF NANOPARTICLE RESEARCH

收录刊物：SCIE、EI

卷号：13

期号：5

页面范围：2147-2155

ISSN号：1388-0764

关键字：Chemical co-precipitation; Calcination; Specific surface area; 4-Chlorophenol; Photocatalytic degradation; Catalysts

摘要：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.