Heteroatom-enriched porous carbon/nickel oxide nanocomposites as enzyme-free highly sensitive sensors for detection of glucose

Vediyappan Veeramani, Rajesh Madhu, Shen Ming Chen, Pitchaimani Veerakumar, Chin Te Hung, Shang Bin Liu

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

An eco-friendly synthesis of heteroatom-enriched activated carbon (HAC)-nickel oxide (NiO) nanocomposites invoking a simple electrochemical strategy is reported. The structure and surface properties of the synthesized HAC/NiO materials were characterized by a variety of different analytical and spectroscopic techniques, viz. elemental and thermal analyses, physisorption, X-ray diffraction, Raman spectroscopy, field emission-scanning and transmission electron microscopy, and X-ray photoelectron spectroscopy. The electrochemical properties were probed by cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. The HAC/NiO-modified electrodes exhibited remarkable sensitivity (1722 μA μM-1 cm-2) and excellent detection limit (55 nM) for detection of glucose with desirable selectivity, stability, reproducibility, and tolerance to interference, even for practical analysis of real samples. The unique properties and remarkable electrochemical performances possessed by such facilely prepared HAC/NiO nanocomposite materials render their prospective applications as cost-effective, non-enzymatic glucose sensors.

Original languageEnglish
Pages (from-to)1384-1390
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume221
DOIs
Publication statusPublished - Aug 24 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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