Synthesis of carbon nano-materials by catalytic combustion technique

摘要

In this paper, the synthesis of Quasi-one-dimensional nano-structured materials by catalytic combustion process was reported, in which acetone and ethanol were employed as carbon sources, nickel nitrate, iron chloride, iron nitrate were used as the catalytic precursor, and copper plate and platinum filament were used as the substrates, respectively. In the experiments, the substrates coated with given catalytic precursors were placed into flames to synthesize carbon nano-materials. Here, the fuels provided carbon sources and hot environment for the formation of Quasi-one-dimensional nano-structured materials. The characterizations of the products obtained by catalytic combustion process were performed using scanning electron microscopy, high-resolution transmission electron microscopy and Raman spectroscopy. The results of characterization indicated that the pruducts consist of carbon nanofibers and nanotubes, the impact of catalytic precursors on yield and microstructure of the products was discussed based on the feature of the experiment; we also found that some carbon nanofibers would be prone to aggregate into carbon spheres with different morphologies, the formation mechanism of these spheres was discussed based on the feature of the substrates.