Synthesis of nano-carbon (nanotubes, nanofibres, graphene) materials

被引：55

作者：

Awasthi K. ^{[1
]}

Kumar R. ^{[1
]}

Raghubanshi H. ^{[1
]}

Awasthi S. ^{[1
]}

Pandey R. ^{[1
]}

Singh D. ^{[1
]}

Yadav T.P. ^{[1
]}

Srivastava O.N. ^{[1
]}

机构：

[1] Centre of Nanoscience and Nanotechnology, Department of Physics, Banaras Hindu University

来源：

Bulletin of Materials Science | 2011年 / 34卷 / 4期

关键词：

Carbon nanotube; CNTs-polymer composite; Graphene; Graphitic nanofibres; Polyacrylamide;

D O I：

10.1007/s12034-011-0170-9

中图分类号：

学科分类号：

摘要：

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. © Indian Academy of Sciences.

引用

页码：607 / 614

页数：7

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