Long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion

Abstract Nanomaterials are intended for industrial applications, for that purpose scalability needs to be addressed, therefore an important issue comes to the picture: storage. Graphene oxide (GO) is of great interest for practical applications in optoelectronics, chemical sensors, supercapacitor el...

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Autores principales:	Ulises Antonio Méndez‐Romero, Miguel Angel Velasco‐Soto, Liliana Licea‐Jiménez, Jesús González‐Hernández, Sergio Alfonso Pérez‐García
Formato:	article
Lenguaje:	EN
Publicado:	Wiley-VCH 2021
Materias:	chemical properties chemical self‐reduction, graphene oxide kinetics, metastable compounds, storage stability Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/1557d5dc861f498489268cd5b548839b
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spelling	oai:doaj.org-article:1557d5dc861f498489268cd5b548839b2021-11-10T13:30:46ZLong‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion2688-401110.1002/nano.202000274https://doaj.org/article/1557d5dc861f498489268cd5b548839b2021-11-01T00:00:00Zhttps://doi.org/10.1002/nano.202000274https://doaj.org/toc/2688-4011Abstract Nanomaterials are intended for industrial applications, for that purpose scalability needs to be addressed, therefore an important issue comes to the picture: storage. Graphene oxide (GO) is of great interest for practical applications in optoelectronics, chemical sensors, supercapacitor electrodes, among others. GO properties are related to its O/C ratio and its precise control allows fine tuning of properties such as conductivity, chemical reactivity and band gap. Nevertheless, GO has a critical storage restriction, due to its chemical self‐reduction, that is, the oxygen loss not only alters its properties, but also promotes aggregation through time. In this work, the impact of storage conditions on GO properties was studied by comparing two systems: a solid sample and a liquid dispersion, which were analyzed during the course of 3 years. For this purpose, stability, O/C ratio and optical band‐gap of the stored samples were analyzed through time by means of zeta potential, X‐ray photoelectron spectroscopy (XPS) and UV‐Vis. Results show the difference in stability between the samples due to oxygen loss in the GO structure, confirmed by XPS. Moreover, optical band‐gap shows that the solid sample decreases its value around 64% compared to the liquid dispersion.Ulises Antonio Méndez‐RomeroMiguel Angel Velasco‐SotoLiliana Licea‐JiménezJesús González‐HernándezSergio Alfonso Pérez‐GarcíaWiley-VCHarticlechemical propertieschemical self‐reduction, graphene oxidekinetics, metastable compounds, storage stabilityMaterials of engineering and construction. Mechanics of materialsTA401-492ENNano Select, Vol 2, Iss 11, Pp 2168-2175 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	chemical properties chemical self‐reduction, graphene oxide kinetics, metastable compounds, storage stability Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	chemical properties chemical self‐reduction, graphene oxide kinetics, metastable compounds, storage stability Materials of engineering and construction. Mechanics of materials TA401-492 Ulises Antonio Méndez‐Romero Miguel Angel Velasco‐Soto Liliana Licea‐Jiménez Jesús González‐Hernández Sergio Alfonso Pérez‐García Long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion
description	Abstract Nanomaterials are intended for industrial applications, for that purpose scalability needs to be addressed, therefore an important issue comes to the picture: storage. Graphene oxide (GO) is of great interest for practical applications in optoelectronics, chemical sensors, supercapacitor electrodes, among others. GO properties are related to its O/C ratio and its precise control allows fine tuning of properties such as conductivity, chemical reactivity and band gap. Nevertheless, GO has a critical storage restriction, due to its chemical self‐reduction, that is, the oxygen loss not only alters its properties, but also promotes aggregation through time. In this work, the impact of storage conditions on GO properties was studied by comparing two systems: a solid sample and a liquid dispersion, which were analyzed during the course of 3 years. For this purpose, stability, O/C ratio and optical band‐gap of the stored samples were analyzed through time by means of zeta potential, X‐ray photoelectron spectroscopy (XPS) and UV‐Vis. Results show the difference in stability between the samples due to oxygen loss in the GO structure, confirmed by XPS. Moreover, optical band‐gap shows that the solid sample decreases its value around 64% compared to the liquid dispersion.
format	article
author	Ulises Antonio Méndez‐Romero Miguel Angel Velasco‐Soto Liliana Licea‐Jiménez Jesús González‐Hernández Sergio Alfonso Pérez‐García
author_facet	Ulises Antonio Méndez‐Romero Miguel Angel Velasco‐Soto Liliana Licea‐Jiménez Jesús González‐Hernández Sergio Alfonso Pérez‐García
author_sort	Ulises Antonio Méndez‐Romero
title	Long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion
title_short	Long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion
title_full	Long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion
title_fullStr	Long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion
title_full_unstemmed	Long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion
title_sort	long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion
publisher	Wiley-VCH
publishDate	2021
url	https://doaj.org/article/1557d5dc861f498489268cd5b548839b
work_keys_str_mv	AT ulisesantoniomendezromero longtermevolutionofthechemicalandstructuralstabilityofgrapheneoxideafterstorageassolidandasaqueousdispersion AT miguelangelvelascosoto longtermevolutionofthechemicalandstructuralstabilityofgrapheneoxideafterstorageassolidandasaqueousdispersion AT lilianaliceajimenez longtermevolutionofthechemicalandstructuralstabilityofgrapheneoxideafterstorageassolidandasaqueousdispersion AT jesusgonzalezhernandez longtermevolutionofthechemicalandstructuralstabilityofgrapheneoxideafterstorageassolidandasaqueousdispersion AT sergioalfonsoperezgarcia longtermevolutionofthechemicalandstructuralstabilityofgrapheneoxideafterstorageassolidandasaqueousdispersion
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Long‐term evolution of the chemical and structural stability of graphene oxide after storage as solid and as aqueous dispersion

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