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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.
Biosens Bioelectron. 2008 Dec 01; 24(4):690-5.BB

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 AA in the range of 50-250 and 35-175mumoll(-1) with correlation coefficients of 0.997 and 0.998, respectively. The detection limits for UA and AA are 12 and 7.5mumoll(-1), respectively. Besides the good stability and reproducibility of PAN-ABSA/GCE due to the covalent attachment of ABSA at GCE surface, the modified electrode also exhibits good sensitivity and selectivity.

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Authors+Show Affiliations

Zhang L
Department of Chemistry, College of Life and Environment Sciences, Shanghai Normal University, Guilin Road No. 100, Shanghai 200234, PR China.
Zhang C
No affiliation info available
Lian J
No affiliation info available

MeSH

Aniline CompoundsAscorbic AcidBiosensing TechniquesCarbonComplex MixturesElectrochemistryEquipment DesignEquipment Failure AnalysisGlassIsethionic AcidMicroelectrodesNanostructuresReproducibility of ResultsSensitivity and SpecificityUric Acid

Pub Type(s)

Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18706798

Citation

Zhang, Lei, et al. "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, vol. 24, no. 4, 2008, pp. 690-5.
Zhang L, Zhang C, Lian J. 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. Biosens Bioelectron. 2008;24(4):690-5.
Zhang, L., Zhang, C., & Lian, J. (2008). 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, 24(4), 690-5. https://doi.org/10.1016/j.bios.2008.06.025
Zhang L, Zhang C, Lian J. 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. Biosens Bioelectron. 2008 Dec 1;24(4):690-5. PubMed PMID: 18706798.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - 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. AU - Zhang,Lei, AU - Zhang,Chunhua, AU - Lian,Jiying, Y1 - 2008/06/22/ PY - 2008/01/31/received PY - 2008/06/16/revised PY - 2008/06/16/accepted PY - 2008/8/19/pubmed PY - 2009/2/13/medline PY - 2008/8/19/entrez SP - 690 EP - 5 JF - Biosensors & bioelectronics JO - Biosens Bioelectron VL - 24 IS - 4 N2 - 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 AA in the range of 50-250 and 35-175mumoll(-1) with correlation coefficients of 0.997 and 0.998, respectively. The detection limits for UA and AA are 12 and 7.5mumoll(-1), respectively. Besides the good stability and reproducibility of PAN-ABSA/GCE due to the covalent attachment of ABSA at GCE surface, the modified electrode also exhibits good sensitivity and selectivity. SN - 1873-4235 UR - https://www.unboundmedicine.com/medline/citation/18706798/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_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0956-5663(08)00276-5 DB - PRIME DP - Unbound Medicine ER -
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