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Generation and Capture of CO2 and CO in Graphite Oxide Stacks during Thermal Reduction

Published online by Cambridge University Press:  31 January 2011

Muge Acik ,
Rodolfo Guzman  and
Yves J Chabal
Muge Acik
Affiliation:
[email protected], University of Texas at Dallas, Materials Science and Engineering, Richardson, Texas, United States
Rodolfo Guzman
Affiliation:
[email protected], University of Texas at Dallas, Materials Science and Engineering, Richardson, Texas, United States
Yves J Chabal
Affiliation:
[email protected], University of Texas at Dallas, Materials Science and Engineering, Richardson, Texas, United States
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Abstract

Infrared spectroscopy is used to monitor the evolution of CO2 (2330-2350 cm-1) and CO (2050-2200 cm-1) generated during thermal reduction of graphite oxide. The appearance of CO2 at low temperatures (≤200°C) is associated with oxygen removal in species such as anhydrides, esters, lactols, carboxylic acids and lactones either at the edges or in the distorted basal plane of the GO sheets. At higher temperatures (250°C-750°C), release of CO is observed and may be due to decomposition of CO2 or oxygen-containing species like ethers, carbonyls, phenols or quinones. Observation of these gases is possible in multilayer GO because they are trapped in between the interlayer spacing of GO stacks for a time sufficient for detection.

Keywords

infrared (IR) spectroscopyannealingadsorption
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1205: Symposium L– Large-Area Electronics from Carbon Nanotubes, Graphene, and Related Noncarbon Nanostructures , 2009 , 1205-L01-05
Copyright
Copyright © Materials Research Society 2010

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