• 文献标题:   Growth of graphene sheets under an oxyacetylene flame without a catalyst
  • 文献类型:   Article
  • 作  者:   GUO LJ, PENG J
  • 作者关键词:   graphene, flame synthesi, microstructure, transmission electron microscopy, raman
  • 出版物名称:   NEW CARBON MATERIALS
  • ISSN:   1007-8827 EI 1872-5805
  • 通讯作者地址:   Northwestern Polytech Univ
  • 被引频次:   1
  • DOI:   10.1016/S1872-5805(17)60015-X
  • 出版年:   2017

▎ 摘  要

High quality graphene sheets that had a low I-D/I-G and a high 2D intensity in Raman spectra were prepared by a catalyst-free acetylene flame method. The sheets were grown vertically on the surface of carbon particles to form a petal-like morphology. A high temperature, high pressure and short residence time of the flame intensified the decomposition and cyclization reaction's of acetylene, leading to the formation of graphene sheets in the gas phase. The turbulent flame and the gases released during the formation of the graphene sheets from carbon nuclei could be responsible for their petal-like morphology instead of an onion-like structure.