Facile Preparation of Carbon Nanotubes and Graphene Sheets by a Catalyst-Free Refluxing Approach
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A facile catalyst-free one-step approach for the preparation of carbon nanotubes and graphene sheets at ambient pressure and ~ 230 ℃ has been developed. Carbon nanotubes and graphene sheets are prepared by reducing tetrachloroethylene with sodium in paraffin oil under reflux. The as-prepared products can be easily purified just by washing with common solvents. No metallic contaminants or other impurities exist in the products. The products show unique optical properties and may find various applications such as optical light attenuators and catalyst supports. This high yield and economical process presents a possible strategy for the large-scale production of carbon nanotubes and graphene sheets for future applications.
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Facile Preparation of Carbon Nanotubes and Graphene Sheets by a Catalyst-Free Refluxing Approach
)
Abstract
A facile catalyst-free one-step approach for the preparation of carbon nanotubes and graphene sheets at ambient pressure and ~ 230 ℃ has been developed. Carbon nanotubes and graphene sheets are prepared by reducing tetrachloroethylene with sodium in paraffin oil under reflux. The as-prepared products can be easily purified just by washing with common solvents. No metallic contaminants or other impurities exist in the products. The products show unique optical properties and may find various applications such as optical light attenuators and catalyst supports. This high yield and economical process presents a possible strategy for the large-scale production of carbon nanotubes and graphene sheets for future applications.
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Acknowledgements
The authors would like to acknowledge the financial support of Ministry of Science and Technology of the People's Republic of China (MOST, Project 2011CB933003) and the National Natural Science Foundation of China (NSFC, Projects 21125103 and 11179011).
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