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

Bulletin of materials science

Ratnesh Pandey¹  Seema Awasthi¹  O N Srivastava¹  Himanshu Raghubanshi¹  Kalpana Awasthi¹  Rajesh Kumar¹  T P Yadav¹  Devinder Singh¹ 

[1] Centre of Nanoscience and Nanotechnology, Department of Physics, Banaras Hindu University, Varanasi 221 005, India$$Centre of Nanoscience and Nanotechnology, Department of Physics, Banaras Hindu University, Varanasi 221 005, IndiaCentre of Nanoscience and Nanotechnology, Department of Physics, Banaras Hindu University, Varanasi 221 005, India$$

关键词: Carbon nanotube;    graphitic nanofibres;    graphene;    CNTsâ€�?�polymer composite;    polyacrylamide.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 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 oilâ€�?�ferrocene solution at 850°C under an Ar atmosphere. We also report the synthesis of carbon nitrogen (Câ€�?�N) nanotubes using castor oilâ€�?�ferroceneâ€�?�ammonia precursor. The as-grown CNTs and Câ€�?�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)â€�?�polymer (polyacrylamide (PAM)) composites. The MWNTsâ€�?�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 MWNTsâ€�?�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 MWNTsâ€�?�PAM composites. Graphene samples were prepared by thermal exfoliation of graphite oxide. XRD analysis confirms the formation of graphene.

【 授权许可】

Unknown