SILVER RELEASE FROM POLYPYRROLE MATRIX IN WELL WATER

MARÍA BELÉN GONZÁLEZ; LORENA INES BRUGNONI; DANIEL OMAR FLAMINI; SILVANA BEATRIZ SAIDMAN

JOURNAL OF ELECTROANALYTICAL CHEMISTRY - (Print)

ELSEVIER SCIENCE SA

Lugar: Amsterdam; Año: 2015

1572-6657

Polypyrrole (PPy) films constituted by hollow rectangular microtubes were electrosynthesised from a salicylate(Sa) solution on 316L stainless steel (316L SS) electrodes. The covered electrodeswere dipped in AgNO3 solutionachieving the immobilisation of silver species. After this, they were rotated at different speeds and silver transportfrom the PPy matrix to well water under open circuit potential (OCP) condition was studied. The resultsindicate that the diffusion process of silver from the polymeric matrix is accelerated when the electrode speedis increased. The disinfection process of well water contaminated with Escherichia coli was also analysed forthe electrode covered with PPy/Ag films. A faster release of Ag species was obtained when a potential step wasapplied. The microtubular morphology of the polymer does not suffer any alteration during the experiments.