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Systematic evaluation of different types of graphene oxide in respect to variations in their in-plane modulus

Title data

Feicht, Patrick ; Siegel, Renée ; Thurn, Herbert ; Neubauer, Jens W. ; Seuss, Maximilian ; Szabo, Tamás ; Talyzin, Alexandr V. ; Halbig, Christian E. ; Eigler, Siegfried ; Kunz, Daniel A. ; Fery, Andreas ; Papastavrou, Georg ; Senker, Jürgen ; Breu, Josef:
Systematic evaluation of different types of graphene oxide in respect to variations in their in-plane modulus.
In: Carbon. Vol. 114 (April 2017) . - pp. 700-705.
ISSN 0008-6223
DOI: https://doi.org/10.1016/j.carbon.2016.12.065

Official URL: Volltext

Abstract in another language

Graphene oxide samples prepared in various laboratories following a diversity of synthesis protocols based on Brodie's (BGO) and Hummers/Offeman's (HGO) methods were compared in respect of their in plane moduli. A simple wrinkling method allowed for a spatial resolution <1.5 pm by converting the wrinkling frequency. Quite surprisingly, a drastic variation of the in-plane moduli was found spanning the range from 600 GPa for the best BGO types, which is in the region of chemically derived graphene, all the way down to less than 200 GPa for HGO types. This would suggest that there are no two equal GO samples and GO should not be regarded a compound but rather a class of materials with very variable physical properties. While large differences between Brodie's and Hummers/Offeman's types might have been expected, even within the group of Hummers/Offeman's types pronounced differences are observed that, based on C-13 solid-state NMR, were related to over-functionalization versus over-oxidation. (C) 2017 Elsevier Ltd. All rights reserved.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: ISI:000393249600079
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Chair Physical Chemistry II - Univ.-Prof. Dr. Andreas Fery
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry III
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry III > Chair Inorganic Chemistry III - Univ.-Prof. Dr. Jürgen Senker
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 540 Chemistry
Date Deposited: 11 Sep 2017 08:40
Last Modified: 18 Mar 2021 07:55
URI: https://eref.uni-bayreuth.de/id/eprint/39541