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ElectroanalysisVolume 9, Issue 7, April 1997, Pages 564-569

Electrochemical and Surface Characterization of pH Sensor Based on Bisulfate-Doped Poly(pyrrole)(Article)

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  • aICTM Department of Electrochemistry, University of Belgrade, Njegoseva 12, 11001 Belgrade, Yugoslavia
  • bRice University, Chemistry Department MS-60, 1700 Rice Blvd., Houston, TX 77005, United States
  • cFaculty of Technology and Metallurgy, Dept. Phys. Chem. and Electrochem., University of Belgrade, Karnegijeva 4, 11001 Belgrade, Yugoslavia
  • dFaculty of Technology and Metallurgy, Department of Analytical Chemistry, University of Belgrade, Karnegijeva 4, 11001 Belgrade, Yugoslavia

Abstract

Pyrrole was electrochemically polymerized on glassy carbon support in NaHSO4 solutions under different conditions (method applied, concentration of monomer, concentration of the main solution, thickness of the film). These variables were used to study the preparation effect on the resulting properties, in particular on the potentiometric response of the PPy-HSO4 electrodes. The electrodes were characterized by cyclic voltammetry, as well as by STM and AES techniques. Utilities of the polymer application as a sensor were studied by direct potentiometric measurements. The results obtained show that poly(pyrrole) doped with bisulfate ions can serve as pH sensor, with the slope of E/pH curves approaching the theoretical value.

Author keywords

AESBisulfateCyclic voltammetrypH responsePoly(pyrrole)STM

Indexed keywords

Engineering controlled terms:Aromatic compoundsElectrodespHpH sensorsPotentiometers (electric measuring instruments)Sodium compoundsSulfur compounds
Engineering uncontrolled termsAESCarbon supportConditionElectrochemical characterizationsMonomer concentrationPH responsePoly(pyrrole)STMSurface characterization
Engineering main heading:Cyclic voltammetry
  • ISSN: 10400397
  • CODEN: ELANE
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1002/elan.1140090712
  • Document Type: Article
  • Publisher: Wiley-VCH Verlag

  Jovanovic, V.M.; Rice University, Chemistry Department MS-60, 1700 Rice Blvd., United States
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