%0 Journal Article
%T Electrocatalytic Detection of Amitrole on the Multi-Walled Carbon Nanotube  ¡é ? ¡° Iron (II) tetra-aminophthalocyanine Platform
%A Msimelelo Siswana
%A Kenneth I. Ozoemena
%A Tebello Nyokong
%J Sensors
%D 2008
%I MDPI AG
%X It is shown that iron(II) tetra-aminophthalocyanine complex electropolymerized onto a multi-walled carbon nanotube-modified basal plane pyrolytic graphite electrode greatly enhanced the electrocatalytic detetion of amitrole (a toxic herbicide), resulting in a very low detection limit (0.5 nM) and excellent sensitivity of 8.80   ¡À0.44     A/nM, compared to any known work reported so far. The electrocatalytic detection of amitrole at this electrode occurred at less positive potential (~0.3 V vs Ag|ACl) and also revealed a typical coupled chemical reaction. The mechanism for this response is proposed. The electrode gave satisfactory selectivity to amitrole in the presence of other potential interfering pesticides in aqueous solutions.
%K Amitrole
%K tetra-aminophthalocyanine
%K electropolymerization
%K multi walled carbon nanotubes
%K basal plane pyrolytic graphite electrode
%U http://www.mdpi.com/1424-8220/8/8/5096/