STUDY OF ELECTROCHEMICAL PROPERTIES OF AU(210) FACE ELECTRODE IN NITRATE SOLUTIONS

• Tipo: Artigo em Revista Científica Internacional
• Data: 1994

Autores

SILVA, F (Autor) FCUP; SOTTOMAYOR, MJ (Autor) FCUP; MARTINS, A (Autor) Outra

Revista

Título: Electrochimica Acta

Vol. 39

Páginas: 491-496

ISSN: 0013-4686

Editora: Elsevier

Indexação

ISI Web of Knowledge - 8 Citações

Scopus - 9 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-KAT

DOI: 10.1016/0013-4686(94)80091-x

Abstract (EN): The behaviour of Au(210) in HNO3 and NaNO3 solutions was studied with cyclic voltammetry and differential capacity measurements as a function of concentration and temperature. The effect of concentration on both j-E profiles and C(E) curves suggests that for low concentrations and around zero charge potential, NO3- adsorption is similar to ClO4- adsorption on Au(210). For higher concentrations, the adsorption of NO3- ions at positive charges seems to occur to a greater extent than ClO4- ions. The entropy of formation of the electrochemical interface was derived from the effect of temperature in HNO3 solution. It was found to be qualitatively similar to what was observed in HClO4, solution.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6