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Journal of Nanomaterials
Volume 2015, Article ID 650682, 6 pages
http://dx.doi.org/10.1155/2015/650682
Research Article

CO2 Storage Properties of Nanostructured Carbons by a Microwave Plasma Reactor

School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK

Received 18 June 2015; Accepted 29 September 2015

Academic Editor: Sami-ullah Rather

Copyright © 2015 Mi Tian and Congxiao Shang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nanostructured carbon was successfully produced by methane cracking in a relatively low-energy cold plasma reactor designed in-house. A followed thermal treatment was carried out to further enhance its porosity. The modified plasma carbon was then employed for CO2 adsorption at 25°C. The as-synthesized plasma carbon and the modified carbon were characterized by BET surface area/pore size analyzer, Raman spectra, and transmission electron microscopy (TEM). The results show thermal modification pronouncedly improves BET surface area and porosity of PC due to opening up of accessible micro-/mesopores in the graphitic structure and by the removal of amorphous carbons around the graphite surface. The modified PC displays a higher adsorption capacity at 25°C than that of the commercial activated carbon reported. The low hydrogen storage capacity of the modified PC indicates that it can be considered for CO2 removal in syngas.