Producción Científica Profesorado

Potentiometric Behavior of Diverse Polypyrrole-sulphate Films Electro Synthesized on Graphite - Epoxy Resin Composite



Alvarez Romero, Giaan Arturo

2009

Licona-Sánchez T. J., Álvarez-Romero G. A., Palomar-Pardavé M. E., Galán-Vidal C. A., Páez Hernández M. E., Potentiometric Behavior of Diverse Polypyrrole-sulphate Films Electro Synthesized on Graphite - Epoxy Resin Composite, ECS Transactions, 2009, Vol. 20, Núm . 1, ISSN 1938-5862


Abstract


n this work, polypyrrole films are electrosynthesized in aqueous media over graphite-epoxy resin composite; sulphate ions used to dope the polymer are obtained from different salts (Na2SO4, Li2SO4, (NH4)2SO4 and K2SO4). Potentiostatic techniques are used to induce the polymerization. Potentiometric response of Ppy-SO4-2 films was evaluated by calibration curves. Analyzing the slope sign, behavior of the different films can be classified in three responses: anionic, cationic and anionic-cationic. These behaviors were observed for all synthesized films, independently of the sulphate salt used. When analyzing the transients obtained for the different salts, similarities where found for those with the same potentiometric behavior, but significative differences where observed when comparing transients of different potentiometric response. It was determined that the cation size of the sulphate salt influences the Ppy-SO4-2 film response. Boundaries on the potentiostatic synthesis parameters are suggested to induce a specific potentiometric response.



Producto de Investigación




Artículos relacionados

Development of a Chloride Ion-Selective Solid State Sensor Based on Doped Polypyrrole-Graphite-Epoxy...

Kinetics of Polypyrrole Films Doped with Sulphate Ions Electrodeposited Over Graphite - Epoxy Resin ...

Determination of glucose by flow injection analysis with amperometric detection at Fe(III)-(tris(3,5...

Synthesis and crystal structures of cis-palladium(II) and cis-platinum(II) complexes containing dipy...

Sequential Injection Spectrophotometric Determination of Diclofenac in Urine and Pharmaceutical Form...

Influence of the Cation Nature of the Sulphate Salt on the Electrochemical Synthesis of Sulfate-Dope...

Sequential Injection Spectrophotometric Determination of Diclofenac in Urine and Pharmaceutical Form...

Validation of a tubular bismuth film amperometric detector: Determination of diclofenac sodium by mu...

Development of a novel composite sensor based on doped pyrrole selective to nitrate ions

Determination of oxytetracycline in milk samples by polymer inclusion membrane separation coupled to...