Synthesis of nano-carbon (nanotubes,nanofibres, graphene) materials |
| |
Authors: | Kalpana Awasthi Rajesh Kumar Himanshu Raghubanshi Seema Awasthi Ratnesh Pandey Devinder Singh T P Yadav O N Srivastava |
| |
Affiliation: | (1) School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA |
| |
Abstract: | In the present study, we report the synthesis of carbon nanotubes (CNTs) using a new natural precursor: castor oil. The CNTs
were synthesized by spray pyrolysis of castor oil-ferrocene solution at 850°C under an Ar atmosphere. We also report the synthesis
of carbon nitrogen (C-N) nanotubes using castor oil-ferrocene-ammonia precursor. The as-grown CNTs and C-N nanotubes were
characterized through scanning and transmission electron microscopic techniques. Graphitic nanofibres (GNFs) were synthesized
by thermal decomposition of acetylene (C2H2) gas using Ni catalyst at 600°C. As-grown GNFs reveal both planar and helical morphology. We have investigated the structural
and electrical properties of multi-walled CNTs (MWNTs)-polymer (polyacrylamide (PAM)) composites. The MWNTs-PAM composites
were prepared using as purified, with ball milling and functionalized MWNTs by solution cast technique and characterized through
SEM. A comparative study has been made on the electrical property of these MWNTs-PAM composites with different MWNTs loadings.
It is shown that the ball milling and functionalization of MWNTs improves the dispersion of MWNTs into the polymer matrix.
Enhanced electrical conductivity was observed for the MWNTs-PAM composites. Graphene samples were prepared by thermal exfoliation
of graphite oxide. XRD analysis confirms the formation of graphene. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|