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

• Type: Article in International Scientific Journal
• Date: 2004

Authors

Martins, MC (Author) Other; Pereira, CM (Author) FCUP; Girault, HH (Author) Other; Silva, F (Author) FCUP

Journal

Title: Electrochimica Acta

Vol. 50

Pages: 135-139

ISSN: 0013-4686

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 10 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5