Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/96733
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMoo, James Guo Shengen
dc.contributor.authorAmbrosi, Adrianoen
dc.contributor.authorBonanni, Alessandraen
dc.contributor.authorPumera, Martinen
dc.date.accessioned2013-08-05T04:35:32Zen
dc.date.accessioned2019-12-06T19:34:23Z-
dc.date.available2013-08-05T04:35:32Zen
dc.date.available2019-12-06T19:34:23Z-
dc.date.copyright2012en
dc.date.issued2012en
dc.identifier.citationMoo, J. G. S., Ambrosi, A., Bonanni, A.,& Pumera, M. (2012). Inherent Electrochemistry and Activation of Chemically Modified Graphenes for Electrochemical Applications. Chemistry - An Asian Journal, 7(4), 759-770.en
dc.identifier.issn1861-4728en
dc.identifier.urihttps://hdl.handle.net/10356/96733-
dc.description.abstractGraphene research is currently at the frontier of electrochemistry. Many different graphene-based materials are employed by electrochemists as electrodes in sensing and in energy-storage devices. Because the methods for their preparation are inherently different, graphene materials are expected to exhibit different electrochemical behaviors depending on the functionalities and density of defects present. Electrochemical treatment of these “chemically modified graphenes” (CMGs) represents an easy approach to alter surface functionalities and consequently tune the electrochemical performance. Herein, we report a preliminary electrochemical characterization of four common chemically modified graphenes, namely: graphene oxide, graphite oxide, chemically reduced graphene oxide, and thermally reduced graphene oxide. These CMGs were compared with graphite as a reference material. Cyclic voltammetry was used to ascertain the chemical functionalities present and to understand the potential ranges in which the materials were electroactive. Electrochemical treatment with either an oxidative or a reductive fixed potential were then carried out to activate these chemically modified graphenes. The effects of such electrochemical treatments on their electrocatalytic properties were then investigated by cyclic voltammetry in the presence of well-known redox probes, such as [Fe(CN)6]4−/3−, Fe3+/2+, [Ru(NH3)6]2+/3+, and ascorbic acid. Thermally reduced graphene oxide exhibited the best electrochemical behavior amongst all of the CMGs, with the fastest rate of heterogeneous electron transfer (HET) and the lowest overpotentials. These findings will have far-reaching consequences for the evaluation of different CMGs as electrode materials in electrochemical devices.en
dc.language.isoenen
dc.relation.ispartofseriesChemistry - an Asian journalen
dc.titleInherent electrochemistry and activation of chemically modified graphenes for electrochemical applicationsen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen
dc.identifier.doi10.1002/asia.201100852en
item.fulltextNo Fulltext-
item.grantfulltextnone-
Appears in Collections:SPMS Journal Articles

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.