Synthesis of Carbon Onions Including Fe3C by Chemical Vapor Deposition Using an Iron Catalyst Supported on Sodium Chloride

Lei Shan Chen; Cun Jing Wang; Gai Rong Chen

doi:10.4028/www.scientific.net/AMM.184-185.1294

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 184-185Synthesis of Carbon Onions Including Fe3C by...

Synthesis of Carbon Onions Including Fe₃C by Chemical Vapor Deposition Using an Iron Catalyst Supported on Sodium Chloride

Abstract:

Carbon onions including Fe3C were synthesized by the catalytic decomposition of acetylene at 400 °C using iron supported on sodium chloride as catalyst. The samples were examined by high resolution transmission electron microscopy, energy dispersive spectroscopy, and X-ray diffraction. The results show that carbon onions including Fe3C core with a structure of stacked graphitic fragments and diameters in the range 15-50 nm were obtained. When the product was further heat-treated under vacuum at 1100 °C, carbon onions with a clear concentric graphitic layer structure were obtained.