Electrochemical synthesis of polyaniline nano-networks on p-aminobenzene sulfonic acid functionalized glassy carbon electrode Its use for the simultaneous determination of ascorbic acid and uric acid

Biosensors & Bioelectronics
L ZhangJiying Lian

Abstract

A composite film of polyaniline (PAN) nano-networks/p-aminobenzene sulfonic acid (ABSA) modified glassy carbon electrode (GCE) has been fabricated via an electrochemical oxidation procedure and applied to the electro-catalytic oxidation of uric acid (UA) and ascorbic acid (AA). The ABSA monolayer at GCE surface has been characterized by X-ray photo-electron spectroscopy (XPS) and electrochemical techniques. Atomic force microscopy (AFM), field emission scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS), UV-visible absorption spectra (UV-vis) and cyclic voltammetry (CV) have been used to investigate the PAN-ABSA composite film, which demonstrates the formation of the composite film and the maintenance of the electroactivity of PAN in neutral and even in alkaline media. Due to its different catalytic effects towards the electro-oxidation of UA and AA, the modified GCE can resolve the overlapped voltammetric response of UA and AA into two well-defined voltammetric peaks with both CV and differential pulse voltammetry (DPV), which can be used for the selective and simultaneous determination of these species in a mixture. The catalytic peak currents are linearly dependent on the concentrations of UA and...Continue Reading

References

Dec 1, 1976·Analytical Chemistry·R N Adams
Jul 19, 2003·Chemical Communications : Chem Comm·Yi XiaoItamar Willner
Dec 3, 2003·Chemical Communications : Chem Comm·Shengjun TianWolfgang Knoll
Sep 17, 2004·Journal of the American Chemical Society·J Justin GoodingD Brynn Hibbert
Jun 22, 2005·Biosensors & Bioelectronics·Mingkui WangShaojun Dong

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Citations

Oct 18, 2012·Influenza Research and Treatment·Janice R Ciacci ZanellaMarie R Gramer
Jan 24, 2009·Biosensors & Bioelectronics·Soundappan ThiagarajanShen-Ming Chen
Jul 14, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Cuisong ZhouDan Xiao
Jul 13, 2019·Critical Reviews in Analytical Chemistry·Qiangwei WangJinming Kong
Nov 28, 2015·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Lei ZhangDan Xiao

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