Morphology control of 3D-networked boron-doped diamond nanowires and its electrochemical properties

Seung Koo Lee, Min Jung Song, Dae-Soon Lim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

3D-networked boron-doped diamond (BDD) nanowire was synthesized using an electrostatic self-assembly technique and a chemical vapor deposition process. This BDD nanowire was a BDD-CNT core-shell hybrid nanostructure and applied as an active electrode material on electrochemical sensor. Because electrochemical sensing performance is generally affected by its surface structure and interface characteristics, the deposition time was controlled to identify the optimal morphology. As the deposition time increased, the BDD-CNT nanostructures became thicker, while their porosity and electron transfer resistance were smaller. The electrochemical properties of the BDD based electrodes were investigated by cyclic voltammetry and electrochemical impedance spectroscopy. The BDD-CNT electrodes had the significantly higher sensitivity and wider linear range than the BDD electrode due to large surface area and low electron transfer resistance. The BDD-CNT 40 electrode exhibited a highest sensitivity (275.27 μA/mM∙cm2). Therefore, the 3D-networked BDD nanostructures can be applied for electrochemical detection of various analytes as a promising electrode material.

Original languageEnglish
Pages (from-to)140-145
Number of pages6
JournalJournal of Electroanalytical Chemistry
Volume820
DOIs
Publication statusPublished - 2018 Jul 1

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Keywords

  • Boron-doped diamond nanowire
  • Core-shell hybrid
  • Electrochemical sensor
  • Electrostatic self-assembly technique
  • Glucose

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

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