Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2011-05-01

Journal: JOURNAL OF NANOPARTICLE RESEARCH

Included Journals: EI、SCIE

Volume: 13

Issue: 5

Page Number: 2147-2155

ISSN: 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.