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Surface photovoltage properties and photocatalytic activities of nanocrystalline CoFe(2)O(4) particles with porous superstructure fabricated by a modified chemical coprecipitation method

Authors Zhu, Zhengru
Li, Xinyong
Zhao, Qidong
Shi, Yong
Li, Hong
Chen, Guohua View this author's profile
Issue Date 2011
Source Journal of nanoparticle research , v. 13, (5), May 2011, p. 2147-2155
Summary In this study, nanocrystalline CoFe(2)O(4) 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 CoFe(2)O(4) 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.
ISSN 1388-0764
Language English
Format Article
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