Fabrication of poly (Solid Red A) modified carbon nano tube paste electrode and its application for simultaneous determination of epinephrine, uric acid and ascorbic acid

J. G. Manjunatha, Mohamad Deraman, N. H. Basri, I. A. Talib

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

In this study, a stable electroactive thin film of poly(Solid Red A) has been deposited on the surface of a carbon nano tube paste electrode by cyclic voltammetric technique in an pH 7 phosphate buffer solution (PBS) containing Solid Red A. A higher catalytic activity was obtained for electrocatalytic oxidation of ascorbic acid (AA), epinephrine (EP), and uric acid (UA) in pH 7 PBS at over oxidized poly (Solid Red A) film modified carbon nano tube paste electrode (PSRA/MCNTPE) due to an enhanced peak current and well-defined peak separations compared with both bare carbon nano tube paste electrode (BCNTPE) and PSRA/MCNTPE. The electrode surfaces were characterized by field emission scanning electron microscopy (FESEM). Individual and simultaneous determination of AA, EP, and UA were carried out by cyclic voltammetry and differential pulse voltammetry. The reduction peak current was proportional to the EP and UA concentrations in the range of 2.0 × 10−6–9.0 × 10−6 M and 7.0 × 10−6–2 × 10−5 M, respectively. The modified electrode showed good sensitivity, selectivity, stability, and was employed for the determination of EP and UA in real samples.

Original languageEnglish
Pages (from-to)149-158
Number of pages10
JournalArabian Journal of Chemistry
Volume11
Issue number2
DOIs
Publication statusPublished - 1 Feb 2018

Fingerprint

Ascorbic acid
Ointments
Uric Acid
Epinephrine
Ascorbic Acid
Carbon
Fabrication
Electrodes
Acids
Buffers
Phosphates
Electron tubes
Voltammetry
Field emission
Cyclic voltammetry
Catalyst activity
Thin films
Oxidation
Scanning electron microscopy

Keywords

  • Ascorbic acid
  • Carbon nanotubes paste electrode
  • Cyclic voltammetry
  • Epinephrine
  • Poly(Solid Red A)
  • Uric acid

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Fabrication of poly (Solid Red A) modified carbon nano tube paste electrode and its application for simultaneous determination of epinephrine, uric acid and ascorbic acid. / Manjunatha, J. G.; Deraman, Mohamad; Basri, N. H.; Talib, I. A.

In: Arabian Journal of Chemistry, Vol. 11, No. 2, 01.02.2018, p. 149-158.

Research output: Contribution to journalArticle

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