3D Graphene Foam as a Monolithic and Macroporous Carbon Electrode for Electrochemical Sensing

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Xiaochen Dong
  • Xuewan Wang
  • Lianhui Wang
  • Hao Song
  • Wei Huang
  • Peng Chen

Detail(s)

Original languageEnglish
Pages (from-to)3129-3133
Journal / PublicationACS Applied Materials and Interfaces
Volume4
Issue number6
Online published11 May 2012
Publication statusPublished - 27 Jun 2012
Externally publishedYes

Abstract

Graphene, a single-atom-thick monolayer of sp2 carbon atoms perfectly arranged in a honeycomb lattice, is an emerging sensing material because of its extraordinary properties, such as exceptionally high specific surface area, electrical conductivity, and electrochemical potential window. In this study, we demonstrate that three-dimensional (3D), macroporous, highly conductive, and monolithic graphene foam synthesized by chemical vapor deposition represents a novel architecture for electrochemical electrodes. Being employed as an electrochemical sensor for detection of dopamine, 3D graphene electrode exhibits remarkable sensitivity (619.6 μA mM -1 cm-2) and lower detection limit (25 nM at a signal-to-noise ratio of 5.6), with linear response up to ∼25 μM. And the oxidation peak of dopamine can be easily distinguished from that of uric acid - a common interferent to dopamine detection. We envision that the graphene foam provides a promising platform for the development of electrochemical sensors as well as other applications, such as energy storage and conversion.

Research Area(s)

  • 3D electrode, dopamine, electrochemical detection, graphene, nanomaterials, sensors

Citation Format(s)

3D Graphene Foam as a Monolithic and Macroporous Carbon Electrode for Electrochemical Sensing. / Dong, Xiaochen; Wang, Xuewan; Wang, Lianhui et al.

In: ACS Applied Materials and Interfaces, Vol. 4, No. 6, 27.06.2012, p. 3129-3133.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review