Synthesis of Carbon Onions with High Purity by Chemical Vapor Deposition

Lei Shan Chen; Cun Jing Wang

doi:10.4028/www.scientific.net/AMR.641-642.43

Paper Titles

Effect of Coal Dust on Coalbed Methane Wells Productivity
p.26

Heterogeneous Fenton System Dynamic Decolorization of Simulated Dye Wastewater
p.30

Action of Flow Rate of Mobile Phase in Chromatography
p.35

Modification of Well-Aligned Carbon Nanotubes Grown on AAO Template by Chemical Vapor Depostion
p.39

Synthesis of Carbon Onions with High Purity by Chemical Vapor Deposition
p.43

Controlled Synthesis of Carbon Spheres Using Iron Catalyst Supported on Aluminum Hydroxide
p.47

Controlled Growth of Nao-Carbon Metarials Based on Anodic Aluminum Oxide Nanotemplate
p.51

Sythesis of Molecularly Imprinted Polymers for the Binding and Recognition of Nonylphenol
p.55

Experimental Research on the Mineral Processing of a Certain Refractory Limonite Ore in Xinjiang
p.60

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Synthesis of Carbon Onions with High Purity by Chemical Vapor Deposition

Abstract:

Nano-carbon materials were synthesized by decomposing acetylene at 400 °C using iron supported on alumina as catalyst. The catalysts contain about 0.3 and 5.2 wt% iron. The products were refluxed in concentrated HCl at 80°C for 36 h in order to remove the catalyst support. The samples were examined by transmission electron microscopy and X-ray diffraction. The results show that carbon onions surrounding Fe3C core were obtained using the catalyst containing 0.3 wt% iron and these carbon onions had a structure of stacked graphitic fragments, with diameters in the range 15-50 nm.