Solvent-driven electron trapping and mass transport in reduced graphites to access perfect graphene
Vecera P, Holzwarth J, Mundloch U, Edelthalhammer K, Peterlik H, Hauke F, Hirsch A (2016)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2016
Journal
Publisher: Nature Publishing Group: Nature Communications
Book Volume: 7
Article Number: 12411
DOI: 10.1038/ncomms12411
Abstract
Herein, we report on a significant discovery, namely, the quantitative discharging of reduced graphite forms, such as graphite intercalation compounds, graphenide dispersions and graphenides deposited on surfaces with the simple solvent benzonitrile. Because of its comparatively low reduction potential, benzonitrile is reduced during this process to the radical anion, which exhibits a red colour and serves as a reporter molecule for the quantitative determination of negative charges on the carbon sheets. Moreover, this discovery reveals a very fundamental physical-chemical phenomenon, namely a quantitative solvent reduction induced and electrostatically driven mass transport of K + ions from the graphite intercalation compounds into the liquid. The simple treatment of dispersed graphenides suspended on silica substrates with benzonitrile leads to the clean conversion to graphene. This unprecedented procedure represents a rather mild, scalable and inexpensive method for graphene production surpassing previous wet-chemical approaches.
Authors with CRIS profile
Philipp Vecera
Lehrstuhl für Organische Chemie II
Johannes Holzwarth
Lehrstuhl für Organische Chemie II
Udo Mundloch
Lehrstuhl für Organische Chemie II
Konstantin Edelthalhammer
Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope
Frank Hauke
Zentralinstitut für Neue Materialien und Prozesstechnik
Andreas Hirsch
Lehrstuhl für Organische Chemie II
Involved external institutions
Austria (AT)How to cite
APA:
Vecera, P., Holzwarth, J., Mundloch, U., Edelthalhammer, K., Peterlik, H., Hauke, F., & Hirsch, A. (2016). Solvent-driven electron trapping and mass transport in reduced graphites to access perfect graphene. Nature Communications, 7. https://dx.doi.org/10.1038/ncomms12411
MLA:
Vecera, Philipp, et al. "Solvent-driven electron trapping and mass transport in reduced graphites to access perfect graphene." Nature Communications 7 (2016).
BibTeX: Download