Amperometric determination of nitric oxide at a carbon nanotube modified electrode with redox polymer coating

Junjie Fei, Shengshui Hu, Kwok Keung SHIU*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

A novel chemically modified electrode based on an osmium complex-containing redox polymer film coated on single-walled carbon nanotube (SWNT) modified glassy carbon electrode (GCE) has been described for the determination of nitric oxide. The results showed that the oxidation current increased significantly at the SWNT/redox polymer coated GCE, as compared to that observed on a bare GCE- and SWNT-modified GCE. Amperometric measurement was carried out at the potential of +0.80 V (vs. Ag|AgCl) and the current response to NO was found to be directly proportional to its concentration in the range from 2.0∈×∈10 -7 to 4.0∈×∈10 -5 M, and the detection limit was estimated to be 5.0∈×∈10 -8 M.

Original languageEnglish
Pages (from-to)519-523
Number of pages5
JournalJournal of Solid State Electrochemistry
Volume15
Issue number3
DOIs
Publication statusPublished - Mar 2011

Scopus Subject Areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry
  • Electrical and Electronic Engineering

User-Defined Keywords

  • Carbon nanotubes
  • Nitric oxide
  • Osmium complex
  • Redox polymer

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