Publication
Title
Phthalocyanines and porphyrins linked to gold adatoms and their catalytic property towards hydroxide oxidation
Author
Abstract
This paper describes the electrochemical formation and detection of gold adatoms, by recording successive cyclic voltammograms of a gold electrode in base, and their ability to function as an anchor for phthalocyanine or porphyrin adsorption. The values of the redox potential of the adatom reactions are linked to the redox potential of the adsorbed central metal ion, cobalt or copper, of the phthalocyanine or porphyrin compound. In addition, when using a phthalocyanine or porphyrin immobilized on a gold electrode, the detection of hydroxide can be improved by electrocatalysis. The catalytic current was found to vary linearly with the hydroxide concentration and a detection limit of 11 × 10−6 mol L−1 for a 5,10,15,20-tetrakis-(4-carboxyphenyl)-porphyrin-Co(II) modified gold electrode could be calculated.
Language
English
Source (journal)
Electrochimica acta. - London
Publication
London : 2008
ISSN
0013-4686
Volume/pages
53:5(2008), p. 2355-2361
ISI
000252685900036
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Web of Science
Record
Identification
Creation 20.06.2011
Last edited 07.09.2017