Abstract
In this paper, we demonstrate the seeded growth of graphene under a plasma chemical vapor deposition condition. First, we fabricate graphene nanopowders (~5 nm) by ball-milling commercial multi-wall carbon nanotubes. The graphene nanoparticles were subsequently subject to a direct current plasma generated in a 100 Torr 10%CH4 - 90%H2 gas mixture. The plasma growth enlarged, over one hour, the nuclei to graphene sheets larger than one hundred nm2 in area. Characterization by electron and X-ray diffraction, high-resolution transmission electron microscopy images provide evidence for the presence of monolayer graphene sheets.
Highlights
In this paper, we demonstrate the seeded growth of graphene under a plasma chemical vapor deposition condition
We have shown that multi-wall carbon nanotubes (MWNTs) are composed of AA9 stacked graphene helices where width is of the order of a few nanometers[18], unlike the conventional view of the structure of MWNTs: a tubule comprising concentrically nested graphene sheets[19]
We fabricate graphene nanopowders (GNPs) with a size of,5 nm by ball-milling commercial MWNTs, and demonstrate that the GNPs used as nuclei grow to monolayer graphene sheets under a plasma chemical vapour deposition (CVD) condition
Summary
We demonstrate the seeded growth of graphene under a plasma chemical vapor deposition condition. We fabricate graphene nanopowders (,5 nm) by ball-milling commercial multi-wall carbon nanotubes. We have shown that multi-wall carbon nanotubes (MWNTs) are composed of AA9 stacked graphene helices where width is of the order of a few nanometers[18], unlike the conventional view of the structure of MWNTs: a tubule comprising concentrically nested graphene sheets[19]. This observation suggests that shortening helical graphitic materials, exhibiting a high aspect ratio (,1,000), may form nano-scale monolayer graphene. We fabricate graphene nanopowders (GNPs) with a size of ,5 nm by ball-milling commercial MWNTs, and demonstrate that the GNPs used as nuclei grow to monolayer graphene sheets under a plasma CVD condition
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
