Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/96127
Title: Surfactants show both large positive and negative effects on observed electron transfer rates at thermally reduced graphenes
Authors: Wong, Colin Hong An
Pumera, Martin
Issue Date: 2012
Source: Wong, C. H. A., & Pumera, M. (2012). Surfactants show both large positive and negative effects on observed electron transfer rates at thermally reduced graphenes. Electrochemistry Communications, 22, 105-108.
Series/Report no.: Electrochemistry communications
Abstract: The use of surfactants is ubiquitous in the production of graphene and its analogs as well as their stabilization in solution due to their hydrophobicity causing significant aggregation in aqueous media. Several redox probes ([Fe(CN)6]4−/3−, [Ru(NH3)6]2+/3+, Feaq2+/3+) were employed to assess the effect of various surfactants on the electrochemical responses of glassy carbon (GC) as well as thermally reduced graphene oxide (TRGO) modified GC electrodes. Anionic (sodium cholate, sodium dodecyl sulfate) as well as cationic (cetrimonium bromide) surfactants were used in this investigation. The presence of these surfactants was shown to have varying influences on peak-to-peak separation (ΔE) and faster/slower observed heterogeneous electron transfer (HET) values depending on the nature of the probe as well as type of surfactant. Careful consideration of control experiments is recommended to aid in determining a material's electrochemical performance.
URI: https://hdl.handle.net/10356/96127
http://hdl.handle.net/10220/10847
ISSN: 1388-2481
DOI: 10.1016/j.elecom.2012.06.007
Rights: © 2012 Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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