Issue 6, 2017

Tuning of graphene oxide composition by multiple oxidations for carbon dioxide storage and capture of toxic metals

Abstract

Graphene oxide (GO) is a material used as a precursor for the synthesis of graphene and its derivatives. Chemical properties of graphene are strongly influenced by the chemical composition of the original GO. In this paper we would like to show that the amount as well as the type of functional groups can be significantly increased and controlled by multiple oxidations of GO. For this purpose we performed multiple oxidations using two chlorate methods (Staudenmaier and Hofmann) and a permanganate method (Hummers). The results show a possibility of tuning the composition of GO functionalities by multiple oxidations. The obtained results also show that the second and third subsequent reoxidation reactions significantly increase the amount of oxygen containing groups in GO, mainly carboxylic groups. The multiple oxidation of graphene oxide led to a significant increase of carbon storage capacity. The high concentration of oxygen functionalities led to an increase of sorption capacity by more than one order of magnitude.

Graphical abstract: Tuning of graphene oxide composition by multiple oxidations for carbon dioxide storage and capture of toxic metals

Supplementary files

Article information

Article type
Paper
Submitted
01 May 2016
Accepted
26 Dec 2016
First published
29 Dec 2016
This article is Open Access
Creative Commons BY-NC license

J. Mater. Chem. A, 2017,5, 2739-2748

Tuning of graphene oxide composition by multiple oxidations for carbon dioxide storage and capture of toxic metals

M. Nováček, O. Jankovský, J. Luxa, D. Sedmidubský, M. Pumera, V. Fila, M. Lhotka, K. Klímová, S. Matějková and Z. Sofer, J. Mater. Chem. A, 2017, 5, 2739 DOI: 10.1039/C6TA03631G

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