Temperature and environment effects on the graphene oxide reduction via electrical conductivity studies

0525366 - ÚJF 2021 RIV NL eng J - Článek v odborném periodiku
Silipigni, L. - Salvato, G. - Fazio, B. - Di Marco, G. - Proverbio, E. - Cutroneo, Mariapompea - Torrisi, Alfio - Torrisi, L.
Temperature and environment effects on the graphene oxide reduction via electrical conductivity studies.
Journal of Materials Science-Materials in Electronics. Roč. 31, č. 14 (2020), s. 11847-11854. ISSN 0957-4522. E-ISSN 1573-482X
Institucionální podpora: RVO:61389005
Klíčová slova: graphene oxide * thermal reduction * Raman spectra
Obor OECD: Coating and films
Impakt faktor: 2.478, rok: 2020
Způsob publikování: Omezený přístup
https://doi.org/10.1007/s10854-020-03738-4

In this article, we report a study carried out to understand how changes in environment and temperature, in which the graphene oxide (GO) film reduction occurs, alter the electrical properties of the resulting films. In fact, it is possible to improve the GO reduction efficiency by choosing suitable environment and temperature. To this purpose, three different environments (high vacuum, air and nitrogen) and three dissimilar temperatures (177 degrees C, 300 degrees C and 600 degrees C) have been chosen, as suggested by differential scanning calorimetry (DSC) measurements. Among the investigated thermally reduced graphene oxide films, the ones treated at 600 degrees C in nitrogen have shown to possess higher electrical conductivity. Such an enhanced electrical conductivity can be attributed to reduction of oxygen functional groups and restoration of sp(2)carbon network, as confirmed by Raman spectra.
Trvalý link: http://hdl.handle.net/11104/0309528