dc.contributor.authorEng, Alex Yong Sheng
dc.contributor.authorSofer, Zdenek
dc.contributor.authorŠimek, Petr
dc.contributor.authorKosina, Jiri
dc.contributor.authorPumera, Martin
dc.date.accessioned2014-03-27T08:30:41Z
dc.date.available2014-03-27T08:30:41Z
dc.date.copyright2013en_US
dc.date.issued2013
dc.identifier.citationEng, A. Y. S., Sofer, Z., Šimek, P., Kosina, J., & Pumera, M. (2013). Highly hydrogenated graphene through microwave exfoliation of graphite oxide in hydrogen plasma : towards electrochemical applications. Chemistry - A European Journal, 19(46), 15583-15592.en_US
dc.identifier.issn0947-6539en_US
dc.identifier.urihttp://hdl.handle.net/10220/19007
dc.description.abstractHydrogenated graphenes exhibit a variety of properties with potential applications in devices, ranging from a tunable band gap to fluorescence, ferromagnetism, and the storage of hydrogen. We utilize a one-step microwave-irradiation process in hydrogen plasma to create highly hydrogenated graphene from graphite oxides. The procedure serves the dual purposes of deoxygenation and concurrent hydrogenation of the carbon backbone. The effectiveness of the hydrogenation process is investigated on three different graphite oxides (GOs), which are synthesized by using the Staudenmaier, Hofmann, and Hummers methods. A systematic characterization of our hydrogenated graphenes is performed using UV/Vis spectroscopy, SEM, AFM, Raman spectroscopy, FTIR spectroscopy, X-ray photoelectron spectroscopy (XPS), combustible elemental analysis, and electrical conductivity measurements. The highest hydrogenation extent is observed in hydrogenated graphene produced from the Hummers-method GO, with a hydrogen content of 19 atomic % in the final product. In terms of the removal of oxygen groups, microwave exfoliation yields graphenes with very similar oxygen contents despite differences in their parent GOs. In addition, we examine the prospective application of hydrogenated graphenes as electrochemical transducers through a cyclic voltammetry (CV) study. The highly hydrogenated graphenes exhibit fast heterogeneous electron-transfer rates, suggestive of their suitability for electrochemical applications in electrodes, supercapacitors, batteries, and sensors.en_US
dc.language.isoenen_US
dc.relation.ispartofseriesChemistry - a European journalen_US
dc.rights© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.en_US
dc.subjectDRNTU::Science::Chemistry::Physical chemistry::Electrochemistry
dc.titleHighly hydrogenated graphene through microwave exfoliation of graphite oxide in hydrogen plasma : towards electrochemical applicationsen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.identifier.doihttp://dx.doi.org/10.1002/chem.201303164


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record