Preparation and characterization of magnetic carbon nanomaterials bearing APTS–silica on their surface
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The formation of metal-encapsulated carbon nanomaterials by using metallic catalysts (iron, cobalt, and nickel) has been studied. Moreover, these materials were coated with silica surface modified by (3-Aminopropyl)-trimethoxysilane (APTS). Each intermediate structure was confirmed by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The surface morphology of silica-coated carbon nanomaterials was analyzed by scanning electron microscopy (SEM). The modified, APTS–silica surface was additionally characterized by Fourier transform infrared spectroscopy (FT-IR), elemental (EA), and thermogravimetric analysis (TGA).
KeywordsCementite Nickel Oxide Cobalt Oxide Nickel Catalyst Silane Coupling Agent
The authors are grateful to Dr. E. Borowiak-Paleń (Institute of Chemical and Environmental Engineering, West Pomeranian University of Technology, Szczecin) for the HRTEM images of iron sample after ethylene decomposition.