ABSTRACT
An electrochemical sensor based on polyaniline cobalt phtahlocyanito doped with cobalt oxide
nanoparticles was developed for the electrocatalytic oxidation of amitrole.FTIR, Electrochemical
impedance spectroscopy (EIS) and Bode plots were used in the characterization of the
synthesized modifiers CoTCPc, PANI, Co2O3NPs and to ascertain the chemical linkage between
CoTCPc and PANI while cyclic voltammetry, linear sweep, chronoamperometry and differential
pulse voltammetry were used to assess the electrocatalytic efficiency of the linked product
towards oxidation of amitrole. The surface area of the modified electrode was 0.40 cm2 and the
surface coverage was 7.60× 10-13 molcm2.The catalytic rate constant was of 6.26×105M-1s-1and
the apparent electron transfer rate constant was 8.84 × 10-3cm s-1.The adsorptionequilibrium
constant was 3.8× 103 M-1and Gibbs free energy was -20.42kJ. The limit of detection was 6.612
× 10-8M and the limit of quantification was 2× 10-7 M. Interference studies were done and the
electrode displayed the ability to detect both amitrole and nitrates. The electrode displayed good
reproducibility with lower oxidation potential at 0.8 V and high sensitivity towards amitrole.
MAFUWE, P (2021). Electrocatalytic detection of herbicide, amitrole on the platform modified with polyaniline cobalt phthalocyaninato doped with cobalt oxide nanoparticles. Afribary. Retrieved from https://tracking.afribary.com/works/electrocatalytic-detection-of-herbicide-amitrole-on-the-platform-modified-with-polyaniline-cobalt-phthalocyaninato-doped-with-cobalt-oxide-nanoparticles
MAFUWE, PETER "Electrocatalytic detection of herbicide, amitrole on the platform modified with polyaniline cobalt phthalocyaninato doped with cobalt oxide nanoparticles" Afribary. Afribary, 04 May. 2021, https://tracking.afribary.com/works/electrocatalytic-detection-of-herbicide-amitrole-on-the-platform-modified-with-polyaniline-cobalt-phthalocyaninato-doped-with-cobalt-oxide-nanoparticles. Accessed 19 Sep. 2024.
MAFUWE, PETER . "Electrocatalytic detection of herbicide, amitrole on the platform modified with polyaniline cobalt phthalocyaninato doped with cobalt oxide nanoparticles". Afribary, Afribary, 04 May. 2021. Web. 19 Sep. 2024. < https://tracking.afribary.com/works/electrocatalytic-detection-of-herbicide-amitrole-on-the-platform-modified-with-polyaniline-cobalt-phthalocyaninato-doped-with-cobalt-oxide-nanoparticles >.
MAFUWE, PETER . "Electrocatalytic detection of herbicide, amitrole on the platform modified with polyaniline cobalt phthalocyaninato doped with cobalt oxide nanoparticles" Afribary (2021). Accessed September 19, 2024. https://tracking.afribary.com/works/electrocatalytic-detection-of-herbicide-amitrole-on-the-platform-modified-with-polyaniline-cobalt-phthalocyaninato-doped-with-cobalt-oxide-nanoparticles