Authors: K.-H. Lee, A.K. Sra, H.-S. Jang, B.J. Lee, L. Overzeta, D.J. Yang, G.S. Lee
Affilation: The University of Texas at Dallas, United States
Pages: 167 - 170
Keywords: carbon nanotubes, bimetallic, growth
In this poster, we will discuss about a simple efficient way of producing bimetallic FePt, FeCo alloy nanoparticles that are used as catalysts for continuous growth of forests of MWCNTs by PECVD or thermal CVD process. The synthesis of Fe, FePt, FeCo nanocrystals was carried out using the bottom-up polyol process. Growth of MWCNTs forests was accomplished by PECVD for Fe and Fe-Pt and by thermal CVD for Fe-Co. Microscopy analysis indicates that the diameters of the CNTs are about 10-20 nm while height of the forest varies from 30 m for Fe to 5 m for Fe-Pt and 80-100 m for Fe-Co. The main advantage of using Fe-Pt was ability to regrow CNTs without any catalyst reconditing. The advantage of using Fe-Co nanoparticles is the increase in the CNT forest height to 80-100 m. Addition of Co prevents the catalyst from poisoning and enhances the growth of the CNT forests.