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论文类型：期刊论文

发表时间：2010-11-15

发表刊物：CHEMICAL ENGINEERING JOURNAL

收录刊物：SCIE、EI、Scopus

卷号：165

期号：1

页面范围：64-70

ISSN号：1385-8947

关键字：Chemical co precipitation; Calcination; Ag loading; Specific surface photovoltage; Photocatalytic degradation

摘要：Porous and brick-like NiFe2O4 nanoparticles were synthesized by a modified chemical co-precipitation route with calcination temperatures 01 773 K 873 K and 973 K respectively The Ag/NiFe2O4 catalyst was prepared based on the porous NiFe2O4 by the incipient wetness impregnation strategy which showed excellent photoelectric property and catalytic activity The structural properties of these samples were systematically investigated by X-ray powder diffraction (XRD) scanning electronic microscopy (SEM) energy-dispersive X-ray spectra (EDX) UV-vis diffuse reflectance spectroscopy (DRS) and Fourier transform infrared spectroscopy (FT-IR) techniques The photo-induced charge separation in the samples was demonstrated by surface photovoltage (SPV) measurement The photocatalytic degradation of toluene by the Ag/NiFe2O4 and NiFe2O4 samples was comparatively studied under xenon lamp irradiation The results indicate that the Ag/NiFe2O4 sample calcined at 773 K exhibited the highest efficiency for the degradation of toluene (C) 2010 Elsevier B V All rights reserved