Magnetic CoFe2O4–Graphene Hybrids: Facile Synthesis, Characterization, and Catalytic Properties

This paper reports the synthesis of magnetic CoFe2O4–reduced 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–rGO hybrids were investigated by field em...

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Published inIndustrial & engineering chemistry research Vol. 51; no. 17; pp. 6044 - 6051
Main Authors Yao, Yunjin, Yang, Zeheng, Zhang, Dawei, Peng, Wenchao, Sun, Hongqi, Wang, Shaobin
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 02.05.2012
Subjects
Applied sciences
atmospheric deposition
Catalysis
catalysts
catalytic activity
Catalytic reactions
Chemical engineering
Chemistry
energy-dispersive X-ray analysis
engineering
Exact sciences and technology
Fourier transform infrared spectroscopy
General and physical chemistry
graphene oxide
magnetic materials
magnetism
nanoparticles
nitrogen
phenol
Reactors
scanning electron microscopy
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
thermogravimetry
transmission electron microscopy
X-ray diffraction
Catalytic reaction
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Summary:This paper reports the synthesis of magnetic CoFe2O4–reduced 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–rGO 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–desorption isotherm, and thermogravimetric analysis (TGA). Through an in situ chemical deposition and reduction, CoFe2O4–rGO hybrids with CoFe2O4 nanoparticles of 23.8 nm were produced. Catalytic testing showed CoFe2O4–rGO hybrids exhibited much better catalytic activity than CoFe2O4, which suggests rGO plays an important role in CoFe2O4–rGO hybrids for the decomposition of phenol. Moreover, the hybrid catalyst presents good magnetism and could be separated from solution by a magnet.
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ISSN:0888-5885
1520-5045
1520-5045
DOI:10.1021/ie300271p