▎ 摘　　要

The marginal members of the carbon allotropes containing a significant amount of hydrogen atoms are of interest because they show a variety of interesting properties lacking pure carbon materials. They consist of many fractions of highly condensed aromatic rings and are characterized by the atomic ratio of hydrogen-to-carbon ([H]/[C]). A finite part of a graphite sheet is often called "graphene". The graphenes terminated by hydrogen atoms like highly condensed aromatic rings may be called "hydro-graphene". In this paper, we carried out the structural analysis of six kinds of "hydro-graphene" materials prepared by the pyrolysis of three different raw materials at 550 and 650degreesC. The TEM results are consistent with the XRD analysis and clearly indicate the size of the crystallite structure and unique interlayer distance in each hydro-graphene material. These methods may be effective for the design of various kinds of hydro-graphenes and preferable applications of these materials. (C) 2004 Elsevier B.V. All rights reserved,