Rapid, Microwave-Assisted, and One-Pot Synthesis of Magnetic Palladium-CoFe2 O4 -Graphene Composite Nanosheets and Their Applications as Recyclable Catalysts
作者： Xiaofeng Lu , Liu Yang , Xiujie Bian , Danming Chao , Ce Wang
关键词: Materials science 、 Graphene 、 Sodium borohydride 、 Composite number 、 Inorganic chemistry 、 Nanomaterial-based catalyst 、 Fourier transform infrared spectroscopy 、 Nanoparticle 、 X-ray photoelectron spectroscopy 、 Palladium 、 General Materials Science 、 General chemistry 、 Condensed matter physics
摘要: Here, a microwave-assisted approach has been demonstrated to rapidly prepare magnetic Pd–CoFe2O4–graphene (GE) composite nanosheets in ethylene glycol (EG) solvent. The generation of both Pd and CoFe2O4 nanoparticles is accompanied with the reduction process graphene oxide (GO) by EG. surface morphologies chemical composition are characterized transmission electron microscopy (TEM), energy-dispersive X-ray spectrometer (EDS), powder diffraction (XRD), photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) measurements. as-prepared Pd–CoFe2O4–GE exhibit remarkable catalytic activity towards 4-nitrophenol sodium borohydride (NaBH4) at room temperature. apparent kinetic rate constant (K app) this reaction could reach about 11.0 × 10−3 s−1. Moreover, component exhibits property, which make nanocatalysts separated from suspension system. conversion 4-aminophenol 87.2% after four cycles. This work presents simple, rapid, versatile method fabricate metal spinel-type complex oxides on GE nanosheets, providing new opportunity for their applications recyclable reaction.
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