Electrochemical grafting of poly(2,5-dimethoxy aniline) onto multiwalled carbon nanotubes nanocomposite modified electrode and electrocatalytic oxidation of ascorbic acid

Dhanusuraman Ragupathy, Jung Je Park, Soo Chool Lee, Jae Chang Kim, Palanisamy Gomathi, Min Kwan Kim, So Min Lee, Han Do Ghim, Annamalai Rajendran, Sang Hak Lee, Kyung Moon Jeon

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19 Scopus citations

Abstract

A modified electrode was fabricated by grafting poly(2,5-dimethoxyaniline) (PDMA) onto multiwalled carbon nanotubes (MWNTs) and used for the electrocatalytic oxidation of ascorbic acid (AA). Cyclic voltammetry was used to fabricate the modified electrode and demonstrate the electroactivity of MWNT-g-PDMA-ME towards AA. Field emission scanning electron microscopy (FESEM) of MWNT-g-PDMA-ME revealed the combined presence of MWNT and PDMA. The MWNT-g-PDMA-ME exhibited excellent performance for AA at 320 mV with a high sensitivity (12.78 μA/mM) and linear concentration range of 1 to 5 mM (correlation coefficient of 0.9991). Differential pulse voltammetry (DPVs) showed that MWNT-g-PDMA-ME experiences negligible interference from other electro-active components.

Original languageEnglish
Pages (from-to)764-769
Number of pages6
JournalMacromolecular Research
Volume19
Issue number8
DOIs
StatePublished - Aug 2011

Keywords

  • 2,5-dimethoxyaniline
  • Ascorbic acid
  • Electroactivity
  • Grafting
  • MWNT

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