Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10267147 | Electrochemistry Communications | 2005 | 6 Pages |
Abstract
This communication describes the electrochemistry of a novel cobalt phthalocyanine-cobalt porphyrin (cobalt(II)phthalocyanine-cobalt(II)tetra(5-phenoxy-10,15,20-triphenylporphyrin)) (CoPc-(CoTPP)4) immobilised onto a glassy carbon electrode (GCE). The GCE-CoPc-(CoTPP)4 displayed high efficiency as a potential amperometric sensor for hydrogen peroxide (H2O2) in neutral and alkaline pH conditions. Electrochemical and electrocatalytic properties of the pentamer seem to depend mostly on the central CoPc, and partly, on the synergistic effect of the CoPc/CoPP units. The GCE-CoPc-(CoTPP)4 showed very fast amperometric response (â¼1 s), with linearities up to ⩾1.50 mM, low detection limits (μM range) and stability (8 weeks) towards the amperometric determination of laboratory and medical solutions of H2O2.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Kenneth I. Ozoemena, Zhixin Zhao, Tebello Nyokong,