A non-enzymatic hydrogen peroxide sensor based on poly(vinyl alcohol)-multiwalled carbon nanotubes-platinum nanoparticles hybrids modified glassy carbon electrode

Yuxin Fang, Di Zhang, Xia Qin, Zhiying Miao, Shigehiro Takahashi, Jun Ichi Anzai, Qiang Chen

Research output: Contribution to journalArticlepeer-review

87 Citations (Scopus)

Abstract

The present work describes an effective strategy to fabricate a highly sensitive and fast response sensor for non-enzymatic hydrogen peroxide (H 2O 2) determination. Platinum nanoparticles (PtNPs) were electrodeposited onto the multiwalled carbon nanotubes (MWCNTs) which were non-covalently functionalized by freezing-thawing poly(vinyl alcohol) (PVA). The PVA-solubilized MWCNTs could form uniform film on a glassy carbon (GC) electrode, which was considered as a promising support for electrodeposition of metal particles. The PVA-MWCNTs-PtNPs hybrids showed an excellent electrocatalytic activity and offered a significant decrease in the overvoltage for H 2O 2 reduction, as a result of synergic action of PtNPs and MWCNTs. The PVA-MWCNTs-PtNPs hybrids modified sensor exhibited a wide linear range of 0.002-3.8 mM, a remarkable sensitivity of 122.63 μA mM -1 cm -2 at a low potential of 0 mV, a lower detection limit of 0.7 μM at the signal-to-noise ratio of 3, and a fast response time (within 5 s). Additionally, it showed an excellent reproducibility, long-term stability and anti-interference performance. The current work could provide a feasible approach and potential platform to fabricate a variety of non-enzymatic amperometric sensors.

Original languageEnglish
Pages (from-to)266-271
Number of pages6
JournalElectrochimica Acta
Volume70
DOIs
Publication statusPublished - 2012 May 30

Keywords

  • Electrodeposition
  • Hydrogen peroxide sensor
  • Multiwalled carbon nanotubes
  • Platinum nanoparticles
  • Poly(vinyl alcohol)

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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