Specific adsorption of tetraalkylammonium cations on the 1,2-dicloroethane/water interface

• Tipo: Artigo em Revista Científica Internacional
• Data: 2004

Autores

Martins, MC (Autor) Outra; Pereira, CM (Autor) FCUP; Girault, HH (Autor) Outra; Silva, F (Autor) FCUP

Revista

Título: Electrochimica Acta

Vol. 50

Páginas: 135-139

ISSN: 0013-4686

Editora: Elsevier

Indexação

ISI Web of Knowledge - 9 Citações

Scopus - 10 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-000-7QN

DOI: 10.1016/j.electacta.2004.07.023

Abstract (EN): Interfacial tension was used to study the electrochemical properties of the interface between LiCl in water and tetraalkylammonium tetraphenylborate in 1,2-dichloroethane. The interfacial tension decrease with decreasing of the size of the cation of the organic supporting electrolyte on the order TBA(+) < THA(+) < THpA(+) < TOA(+). The decrease of interfacial tension is also observed at the electrocapillary maximum the potential of which (potential of zero charge) shift towards more positive values in the order TBA(+) > THA(+) > THpA(+) > TOA(+). This fact maybe an evidence that there is an increase of adsorption when the alkyl chain length of the organic cation is reduced.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5