Reconstruction of the carbon sp2 network in graphene oxide by low-temperature reaction with CO

Angeles Pulido; Patricia Concepción; Mercedes Boronat; Cristina Botas; Patricia Alvarez; Rosa Menendez; Avelino Corma

doi:10.1039/C1JM14514B

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Reconstruction of the carbon sp² network in graphene oxide by low-temperature reaction with CO†

Angeles Pulido,^a Patricia Concepción,^a Mercedes Boronat,^a Cristina Botas,^b Patricia Alvarez,^b Rosa Menendez^b and Avelino Corma*^a

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* Corresponding authors

^a Instituto de Tecnología Química, Universidad Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, Valencia, Spain
E-mail: acorma@itq.upv.es

^b Instituto Nacional del Carbón, CSIC, Apartado 73, Oviedo, Spain

Abstract

Low-temperature (−176 °C) CO adsorption on graphene oxide and partially reduced graphene oxide sheets was investigated in a combined IR spectroscopic and DFT study. The reactivity of the carbon vacancies in the network was observed to be extremely high, causing the CO molecules to dissociate in a barrier-less process that leads to the reconstruction of the sp²graphene network. After the adsorption of CO on the graphene oxide materials, the intensity of the FTIR bands is lower in the case of partially reduced graphene oxide sheets, indicating that there are fewer active sites available for CO interaction.

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Article information

DOI: https://doi.org/10.1039/C1JM14514B
Article type: Communication
Submitted: 12 Sep 2011
Accepted: 19 Oct 2011
First published: 07 Nov 2011

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J. Mater. Chem., 2012,22, 51-56

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Reconstruction of the carbon sp² network in graphene oxide by low-temperature reaction with CO

A. Pulido, P. Concepción, M. Boronat, C. Botas, P. Alvarez, R. Menendez and A. Corma, J. Mater. Chem., 2012, 22, 51 DOI: 10.1039/C1JM14514B

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Journal of Materials Chemistry