Characterization of 2,(3)-tetra-(4-oxo-benzamide) phthalocyaninato cobalt (II) - Single walled carbon nanotube conjugate platforms and their use in electrocatalysis of amitrole

Tawanda Mugadza, Yasin Arslanolu, Tebello Nyokong*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

In this paper we report on the use of carboxylic acid functionalized single walled carbon nanotubes (SWCNT) in the synthesis of 2,(3)-tetra-(4-oxo- benzamide)phthalocyaninato cobalt (II)-single walled carbon nanotube conjugates (CoTOBPc-SWCNT), their characterization and application in the electrocatalytic oxidation of amitrole. Cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy were used for the detection of amitrole on the modified glassy carbon electrode. The catalytic rate constant was 1.6 × 10 3 M -1 s -1 and the apparent electron rate transfer constant was 1.5 × 10 -5 cm s -1. The linear dynamic range was 1.0 × 10 -6-3.0 × 10 -5 M, with a sensitivity of ∼1.13 A mol -1 L cm -2.

Original languageEnglish
Pages (from-to)44-51
Number of pages8
JournalElectrochimica Acta
Volume68
DOIs
Publication statusPublished - 30 Apr 2012
Externally publishedYes

Funding

This work was supported by the Department of Science and Technology (DST) and National Research Foundation (NRF) , South Africa through DST/NRF South African Research Chairs Initiative for Professor of Medicinal Chemistry and Nanotechnology as well as Rhodes University. TM would like to thank Rhodes University for the post-doctoral fellowship and Midlands State University (Zimbabwe) for the Leave of Absence. YA thanks to Istanbul Technical University, DPT and TUBITAK.

FundersFunder number
National Research Foundation
Rhodes University
Department of Science and Technology, Ministry of Science and Technology, India
Midlands State University

    Keywords

    • Amitrole
    • Chronoamperometry
    • Cobalt (II) phthalocyanine
    • Single walled carbon nanotubes
    • Voltammetry

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