▎ 摘　　要

Silicon carbide nanowires (SCNs) were synthesized on graphene sheets by a simple heat treatment using a mixture of Si powders and commercial graphene sheets with Fe catalyst addition. A series of analytical techniques were employed to investigate the as-grown SCNs. The SCNs were confirmed to be the cubic beta-sic and grew along their preferred direction perpendicular to (111). Most of the SCNs with the average length of about 10 mu m and diameter of 60 nm lay on the graphene sheets. A few SCNs of several micrometers in length show twisted morphology. Solid liquid solid (SLS) and vapor liquid solid (VLS) mechanisms were proposed which interpret the SCNs' growth process on the graphene sheets and match the nucleation, growth of SCNs very well. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.