• Acriflavine immobilized onto polyethyleneimine-wrapped carbon nanotubes/gold nanoparticles as an eletrochemical sensing platform

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      http://www.ias.ac.in/article/fulltext/jcsc/128/02/0257-0268

    • Keywords

       

      Hydrogen peroxide; polyethyleneimine; gold nanoparticles; electrocatalytic reduction.

    • Abstract

       

      Multi-walled carbon nanotubes wrapped by polyethyleneimine (PEI) and functionalized with a carboxylic acid group (CNT-COOH) were deposited with gold nanoparticles (AuNPs) which has been utilized as a platform to immobilize poly(acriflavine)(PAF) and used as modified electrode (AuNPs/PEI/CNTCOOH/PAF). Electrocatalytic reduction of hydrogen peroxide(H2O2) on the surface of the modified electrode was investigated by cyclic voltammetry and electrochemical impedance spectroscopy (EIS) methods. The cyclic voltammetric results indicated the ability of modified Au electrode to catalyze the reduction of H2O2. AuNPs/PEI/CNT-COOH nanocomposite combined the advantages of PEI, well dispersed CNT-COOH and in situ formed AuNPs, endowed with high stability to the enzyme-free sensor.

    • Author Affiliations

       

      Azadeh Azadbakht1 Amirreza Abbasi2

      1. Department of Chemistry, Faculty of Science, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
      2. Faculty of Chemistry, Razi University, 67194, Kermanshah, Islamic Republic of Iran
    • Dates

       
  • Journal of Chemical Sciences | News

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