Facile fabrication of GCE/Nafion/Ni composite, a robust platform to detect hydrogen peroxide in basic medium via oxidation reaction

Md Fahamidul Islam, Md Tarikul Islam, Md Mahmudul Hasan, Mohammed M. Rahman, Yuki Nagao, Mohammad A. Hasnat*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Nickel particles alone can oxidize hydrogen peroxide but confronts extreme stability problem which imparts a barrier to act as sensor. The porous Nafion bed on glassy carbon electrode (GCE) surface provides the sureness of incorporating of Ni particles which was further exploited as an electrochemical sensor for H2O2 detection through oxidative degradation process. The simple electrochemical incorporation of Ni particles along the pores of Nafion improves the stability of the sensor significantly. The oxidative pathway of hydrogen peroxide on GCE/Nafion/Ni was probed by analyzing mass transfer dependent linear sweep voltammograms both in static and rotating modes along with chronoamperometry. An electron transfer step determines the overall reaction rate with k°= 2.72 × 10−4 cm s−1, which is supported by the values of transfer coefficient (β) in between (0.68–0.75). Sensing performance was evaluated by recording differential pulse voltammograms (DPVs) with the linear detection limit (LOD) of 1.8 μM and linear dynamic range (LDR) of 5–500 μM. Real samples from industrial sources were successfully quantified with excellent reproducibility mark GCE/Nafion/Ni electrode as an applicable sensor.

Original languageEnglish
Article number123202
JournalTalanta
Volume240
DOIs
Publication statusPublished - 2022 Apr 1
Externally publishedYes

Keywords

  • Hydrogen peroxide oxidation
  • Hydrogen peroxide sensor
  • Kinetics
  • Nafion binder
  • Nickel catalyst

ASJC Scopus subject areas

  • Analytical Chemistry

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