Electrochemical Sensing of Ascorbic Acid, Hydrogen Peroxide and Glucose by Bimetallic (Fe, Ni)−CNTs Composite Modified Electrode

Sayed Tayyab Raza Naqvi, Bahareh Shirinfar, Dilshad Hussain, Saadat Majeed*, Muhammad Naeem Ashiq, Yasin Aslam, Nisar Ahmed

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

4 Citations (Scopus)
75 Downloads (Pure)

Abstract

In this research, bimetallic supported CNT modified electrode (Fe,Ni/CNTs/GCE) has been developed for sensitive, stable and highly elctroactive sensing of glucose, ascorbic acid and hydrogen peroxide. Transition metals such as Iron (Fe) and Nickel (Ni) offer high electrical and thermal conductance, high active surface-to-volume ratio and presence of d-band electrons gives enhanced electrocatalytic behavior. While, CNTs provide high surface area, stability and excellent conductivity. Synthesized material is characterized by SEM, EDS, XRD and FTIR to access morphology, elemental composition and structure. This unique combination is employed for the electrochemical sensing of ascorbic acid, glucose and hydrogen peroxide and different experimental parameters are optimized. Fe,Ni/CNTs/GCE shows good sensing efficiency at pH 7.4 which is ideally suitable for variety of analytes. The modified electrode also show good reproducibility and sensitivity under optimized conditions and can be reused upto 30 cycles without compromising the efficiency. With good linearity, reproducibility and limit of detection, this material possess significant potential as non-enzymatic biosensor for variety of analytes.

Original languageEnglish
Pages (from-to)851-857
Number of pages7
JournalElectroanalysis
Volume31
Issue number5
Early online date24 Apr 2019
DOIs
Publication statusPublished - 1 May 2019

Keywords

  • Ascorbic acid
  • Bimetallic nanocomposite
  • Carbon nanotubes
  • Electrochemical sensing
  • Glucose
  • Hydrogen peroxide

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