Facile preparation of Carbon nanotubes and graphene sheets by a catalyst-free refluxing approach
Carbon nanotubes, graphene sheets, catalyst free synthesis, refluxing
ABSTRACT A facile catalyst-free one-step approach for the preparation of carbon nanotubes and graphene sheets at ambient pressure and ~ 230 oC 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.
Tsinghua University Press
Jinyong Wang,Li Wei,Fei Peng,Yan Li, Facile preparation of Carbon nanotubes and graphene sheets by a catalyst-free refluxing approach. NanoRes.2012, 5(9): 640–645