Preparation of Poly-(p-aminobenzoic acid)/Multiwall Carbon Nanotubes Composite Film Modified Glassy Carbon Electrode and Application to Detect Catechol and Hydroquinone Simultaneously

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  • QU Jianying
    Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University
  • LOU Tongfang
    Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University
  • KANG Shiping
    Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University
  • DU Xueping
    Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University

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  • Preparation of Poly-(<i>p</i>-aminobenzoic acid)/Multiwall Carbon Nanotubes Composite Film Modified Glassy Carbon Electrode and Application to Detect Catechol and Hydroquinone Simultaneously

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The electrochemical reaction of catechol (CC) and hydroquinone (HQ) was investigated at poly-(p-aminobenzoic acid) (p-ABA)/multiwall carbon nanotubes (MWCNTs) composite film modified glassy carbon (GC) electrode via cyclic voltammetry (CV). Separation of the peak potentials for CC and HQ was about 105 mV in 0.1 mol/L H2SO4, which makes it suitable for simultaneous determination of these compounds. Under optimized conditions, the oxidation current of CC and HQ have been enhanced linearly with the concentration in the range of 1 × 10−5–1 × 10−3 mol/L (r = 0.9979) and 1 × 10−5–1 × 10−3 mol/L (r = 0.9948), with the detection limit of CC and HQ 4 × 10−6 and 2.7 × 10−6 mol/L, respectively. The proposed method has been applied to determine CC and HQ simultaneously with good results, which shows excellent stability and reproducibility.

収録刊行物

  • Electrochemistry

    Electrochemistry 81 (2), 82-85, 2013

    公益社団法人　電気化学会

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