Abstract
Ethanol has been found superior precursor for carbon nanotubes growth with lesser amount of amorphous carbon impurities. In this study, attention has been focused to determine the influence of Alcoholic Catalytic Chemical Vapor Deposition (ACCVD) reaction time on the growth and quality of CNTs via cobalt based catalyst. Effects of different reaction times on synthesis of CNTs were investigated by using characterization techniques like Scanning Electron Microscopy, EDX, X-Ray Diffraction and Raman Spectroscopy. Our results demonstrated that higher reaction times had significant enhancing effects on the yield of grown CNTs up to a critical reaction time and after that CNTs yield decreased. Quality of grown CNTs for 60 minutes was better than other reaction times. ACCVD reaction times also had a noticeable effect on the diameter of grown CNTs. Diameter of grown CNT has decreased continuously with the increase of reaction time from 60 to 150 minutes. The synthesized CNTs were a mixture of SWCNTs and MWCNTs..
Keywords
Alcoholic catalytic chemical Vapor deposition (ACCVD), Ball milling, Ethanol, Carbon nanotubes (CNTs).
Citation
GHUZANFAR SAEED, MUHAMMED UMER FAROOQ, Investigating the effects of CVD reaction time on the growth of carbon nanotubes, Optoelectronics and Advanced Materials - Rapid Communications, 7, 9-10, September-October 2013, pp.707-711 (2013).
Submitted at: Aug. 1, 2012
Accepted at: Sept. 18, 2013