title: Immobilization and release of copper species from a microstructured polypyrrole matrix.
abstract: Copper species immobilization in hollow rectangular-sectioned microtubes of polypyrrole (PPy) electrosynthesized on 316L stainless steel was carried out using two different methods. One of them involved the immobilization after the PPy electropolymerization and the other one during the electrosynthesis process. The electrodes modified with copper species were rotated at different speeds in well water under open-circuit potential conditions. The release of copper species from the PPy matrix and the antibacterial activity against Escherichia coli were analyzed. The obtained results demonstrate that the amount of copper species released as well as the bactericidal effects against E. coli increases with rotation speed. The PPy coating modified with copper species after the electropolymerization reaction exhibited the best performance in terms of antibacterial activity and corrosion protection. These electrodes were tested in a lab-scale continuous flow system for well water disinfection.
authors.affiliation: Departamento de Ingeniería Química, Instituto de Ingeniería Electroquímica y Corrosión (INIEC), Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina.
authors.forename: M B
authors.initials: MB
authors.lastname: González
authors.affiliation: Departamento de Biología, Bioquímica y Farmacia, Instituto de Investigaciones Biológicas y Biomédicas del Sur (INBIOSUR), Universidad Nacional del Sur, San Juan 670, 8000, Bahía Blanca, Argentina.
authors.forename: L I
authors.initials: LI
authors.lastname: Brugnoni
authors.affiliation: Departamento de Ingeniería Química, Instituto de Ingeniería Electroquímica y Corrosión (INIEC), Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina.
authors.forename: D O
authors.initials: DO
authors.lastname: Flamini
authors.affiliation: Planta Piloto de Ingeniería Química (PLAPIQUI), Universidad Nacional del Sur, CONICET, Camino La Carrindanga Km 7, 8000, Bahía Blanca, Argentina.
authors.forename: L M
authors.initials: LM
authors.lastname: Quinzani
authors.affiliation: Departamento de Ingeniería Química, Instituto de Ingeniería Electroquímica y Corrosión (INIEC), Universidad Nacional del Sur, Av. Alem 1253, 8000, Bahía Blanca, Argentina. ssaidman@criba.edu.ar.
authors.forename: S B
authors.initials: SB
authors.lastname: Saidman
mesh_terms: D000900:Anti-Bacterial Agents / Q000032:analysis* / Q000494:pharmacology; D003300:Copper / Q000032:analysis* / Q000494:pharmacology; D003343:Corrosion; D004203:Disinfection / Q000379:methods*; D004566:Electrodes; D004926:Escherichia coli / Q000187:drug effects* / Q000254:growth & development; D058105:Polymerization; D011108:Polymers; D011758:Pyrroles; D013193:Stainless Steel; D014871:Water Microbiology; D060753:Water Quality; D060986:Water Wells
chemical_list: D000900:Anti-Bacterial Agents; D011108:Polymers; D011758:Pyrroles; D013193:Stainless Steel; C067635:polypyrrole; D003300:Copper
keywords: Antibacterial activity; Copper; Electropolymerization; Polypyrrole; Salicylate