Growth of few layer graphene from commercial C2 hydrocarbons at low temperature and controlled surface functionalization. Issue 4 (2nd April 2016)

• Record Type: Journal Article
• Authors: Khajehmandali, Saeid; Angaji, Mahmoud Torabi; Rashidi, Ali Morad
• Is Part Of: Fullerenes, nanotubes and carbon nanostructures. Volume 24:Issue 4(2016)
• Page Start: 253
• Page End: 259
• Publication Date: 2016-04-02
• Subjects: Graphene -- C2 Hydrocarbons -- CVD -- Low temperature -- Functionalization; Fullerenes -- Periodicals; Nanotubes -- Periodicals; Nanostructures -- Periodicals; 546.6812
• DOI: 10.1080/1536383X.2016.1140649
• Languages: English
• ISSNs: 1536-383X

Abstract

ABSTRACT: Graphene is mostly grown from methane on copper foils at a high temperature about 1000°C. In this research, a commercial ethylene-acetylene-ethane mixture was used as a clean precursor for graphene synthesis on nickel foils in a chemical vapor deposition reactor at 750°C. Furthermore, controlled functionalization of graphene sheets was achieved via hydrothermal oxidation at moderate pressure and temperature using nitric acid. Broadened 2D band and G band frequencies in Raman spectra indicated that pristine graphene (PG) was of high quality with low defects. X-ray diffraction results confirmed that PG has five layers. Transmission electron microscopy and N2 adsorption-desorption analyses affirmed that the graphene is of a good quality, large surface area (562 m 2 /g) and small pore size. Fourier transform infrared spectroscopy confirmed functionalization process performance. Thermogravimetric analysis affirmed that the thermal stability of PG was drastically decreased after the functionalization process.