10.1007/s40097-016-0201-6

Non-covalent functionalization of CVD-grown graphene with Au nanoparticles for electrochemical sensing application

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  • Indrajit Shown*1,
  • Abhijit Ganguly1,
  1. Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, TW
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Published in Issue 04-08-2016

How to Cite

Shown, I., & Ganguly, A. (2016). Non-covalent functionalization of CVD-grown graphene with Au nanoparticles for electrochemical sensing application. Journal of Nanostructure in Chemistry, 6(4 (December 2016). https://doi.org/10.1007/s40097-016-0201-6
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Abstract

Abstract Graphene is an one-atom thick two-dimensional (2D) transparent carbon sheet which has aroused potential interest for the ultrafast high-sensitive electronic device application. Functionalization of 2D graphene is one of the important aspects to manipulate its intrinsic properties achieving the requisite aptness for its booming applications. Here, a novel strategy for the noncovalent surface functionalization of 2D graphene layer has been proposed utilizing self-assemble monolayers (SAM) of 1,4-benzenedimethanethiol (BDMT) that can further anchor gold nanoparticles (AuNPs) on the graphene surface. Raman spectroscopy and contact angle measurements confirm the SAM modification on graphene surface. AFM and XPS verify the anchoring of AuNPs on the graphene surface. Furthermore, the AuNPs-anchored BDMT-modified graphene (AuNPs/BDMT/G) electrode is explored for highly sensitive electrochemical detection of H 2 O 2 , exhibiting an impressive detection limit of 1.8 μM (signal-to-noise ratio of 3). Graphical abstract

Keywords

  • Graphene,
  • Noncovalent functionalization,
  • Self-assemble monolayer,
  • Nanoparticles,
  • Hydrogen peroxide biosensors,
  • Electrochemical sensor
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