Magnetic CoFe2O4鈥揋raphene Hybrids: Facile Synthesis, Characterization, and Catalytic Properties

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• 作者：Yunjin Yao ; Zeheng Yang ; Dawei Zhang ; Wenchao Peng ; Hongqi Sun ; Shaobin Wang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：May 2, 2012
• 年：2012
• 卷：51
• 期：17
• 页码：6044-6051
• 全文大小：468K
• 年卷期：v.51,no.17(May 2, 2012)
• ISSN：1520-5045

文摘

This paper reports the synthesis of magnetic CoFe₂O₄鈥搑educed graphene oxide (rGO) hybrids and the catalytic performance in heterogeneous activation of peroxymonosulfate (PMS) for decomposition of phenol. The surface morphologies and structures of the CoFe₂O₄鈥搑GO hybrids were investigated by field emission scanning electron microscopy (SEM), energy-dispersive X-ray spectrometer (EDS), transmission electron microscopies(TEM), powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), nitrogen adsorption鈥揹esorption isotherm, and thermogravimetric analysis (TGA). Through an in situ chemical deposition and reduction, CoFe₂O₄鈥搑GO hybrids with CoFe₂O₄ nanoparticles of 23.8 nm were produced. Catalytic testing showed CoFe₂O₄鈥搑GO hybrids exhibited much better catalytic activity than CoFe₂O₄, which suggests rGO plays an important role in CoFe₂O₄鈥搑GO hybrids for the decomposition of phenol. Moreover, the hybrid catalyst presents good magnetism and could be separated from solution by a magnet.