ELECTROCHEMICAL SYNTHEZIS AND CHARACTERIZATION OF POLYPYRROLE FOR DODECYLSULFATE SENSOR MEMBRANE

https://doi.org/10.22146/ijc.21665

Abdul Haris Watoni(1*), Suryo Gandasasmita(2), Indra Noviandri(3), Buchari Buchari(4)

(1) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Bandung Institut of Technology, Jl. Ganesha 10 Bandung
(2) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Bandung Institut of Technology, Jl. Ganesha 10 Bandung
(3) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Bandung Institut of Technology, Jl. Ganesha 10 Bandung
(4) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Bandung Institut of Technology, Jl. Ganesha 10 Bandung
(*) Corresponding Author

Abstract


A conducting polymer, polypyrrole, has been electrochemically synthesized from pyrrole monomer using cyclic voltammetry technique in aqueous solution in the presence of HDS dopant and KNO3 supporting electrolyte. The polymer was deposited on the surface of an Au-wire and the modified electrode obtained was then used as dodecylsulfate (DS-) ion sensor electrode. The best performance PPy-DS modified-Au electrode conditioned in the air system without HDS or SDS solution gave linear potential response for the concentration range of 1.0 x 10-5 - 1.0 x 10-3 M, sensitivity of 54.5 mV/decade, detection limit of 1.0 x 10-5 M, and response time of 23 - 30 second.  The electrode showed good selectivity towards other anions, therefore can be used to determine SDS concentration in real samples system without any change of the samples matrix.


Keywords


polypyrrole; SDS; cyclic voltammetry

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DOI: https://doi.org/10.22146/ijc.21665

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