Sweet aqueous solution for electrochemical synthesis of polypyrrole part 1B: On copper and its alloys

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Bazzaoui, A (Autor) Outra; José Inácio Martins (Autor) FEUP; Bazzaoui, EA (Autor) Outra; Martins, L (Autor) Outra; Machnikova, E (Autor) Outra

Revista

Título: Electrochimica Acta

Vol. 52 Nº 11

Páginas: 3568-3581

ISSN: 0013-4686

Editora: Elsevier

Indexação

ISI Web of Knowledge - 28 Citações

ISI Web of Science

Scopus - 31 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-004-BC0

DOI: 10.1016/j.electacta.2006.10.017

Abstract (EN): The electrochemical synthesis of polypyrrole (PPy) on copper and brass has been successfully achieved in sodium saccharinate and pyrrole aqueous medium. The synthesized coating under several electrochemical techniques such as cyclic voltammetry, galvanostatic and potentiostatic is homogeneous and adherent. PPy has been characterized by SEM, XPS, IR and Raman spectroscopy and its quality has been confirmed. The doping level obtained from N 1s XPS signal of the oxidized PPy depends on the electrochemical technique used to produce the film. The corrosion performance of PPy/copper and PPy/brass has been evaluated in 3% NaCl and 0.1 M HCl using linear polarization and electrochemical impedance spectroscopy. The results show that PPy coating electrodeposited from sodium saccharinate exhibits significant corrosion protection properties.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 14