Electrochemical Study of Graphene and its Oxidized Form

Authors

  • K.F. Chong UMP

Abstract


Two types of graphene samples were electrochemically studied namely the as-synthesized graphene sample and the oxidized graphene sample. The electrochemical response was evaluated using Fe(CN)63-/4-, and  Ru(NH3)62+/3+. The comparison was made based on the apparent heterogeneous electron transfer rate constant, and charge transfer resistance. Both graphene samples demonstrate extremely low background current which is the excellent criterion in designing biosensor. The introduction of higher carbon-oxygen functionalities on oxidized graphene exhibits lower electron transfer rate constant as compared to the as-synthesized graphene. Furthermore, oxidized graphene sample shows the excellent properties in resisting biofouling of -nicotinamide adenine dinucleotide (NADH) and achieves detection limit of 10 nM. It shows that the oxygen functionalities on graphene surface renders it to be an excellent candidate for sensitive biosensor. 

Downloads

Published

2012-06-30

How to Cite

Chong, K. (2012). Electrochemical Study of Graphene and its Oxidized Form. Journal of Engineering and Technology (JET), 3, 57–68. Retrieved from https://jet.utem.edu.my/jet/article/view/214

Issue

Vol. 3 (2012): JOURNAL OF ENGINEERING AND TECHNOLOGY

Section

Articles

License

Thank you for your interest in submitting your manuscript to the Journal of Engineering and Technology (JET).

JET publishes only original works. Manuscripts must not be previously published or under consideration by any other publications. Papers published in JET may not be published again in whole or in part without permission. Please review these guidelines for researching, writing, formatting and submitting your manuscript. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0).

Those submitting manuscripts should be carefully checked to ensure that all works contributed to the manuscript are acknowledged. The list of authors should include all those who can legitimately claim authorship. Manuscript should only be submitted for consideration once consent is given by all contributing authors using Transfer of Copyright form.