Electrokinetic and Impedimetric Dynamics of FeCo-Nanoparticies on Glassy Carbon Electrode
Date
2013Author
lwuoha, Emmanuel I.
Baker, Priscilla G. L.
Jahed, Nazeem
Waryoa, Tesfaye
Ozoernena, Kenneth I.
Njomoa, Njagi
lkpo, Chinwe O.
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
The electrochemical dynamics of a film of FeCo nanopar.t.icles were studied on a glassy ;.
carbon electrode (GCE). The film was found to be electroactive in 1 M LiCI04 containing 1: I v/v
ethylene carbonate - dimethyl carbonate electrolyte system. Cyclic voltammetric experiments
revealed a diffusion-controlled electron transfer process on the GCE/FeCo electrode surface. Further
interrogation on the electrochemical properties of the FeCo nanoelectrode in an oxygen saturated 1
M LiCI04 containing 1:1 v/v ethylene-carbonate-dimethyl carbonate revealed that the nanoelectrode
showed good response towards the electro-catalytic reduction of molecular oxygen with a Tafel:t
slope of about 120 fnV which is close to the theoretical 118 mV for a single electron transfer process
in the rate limiting step; and a transfer coefficient (a) of 0.49. The heterogeneous rate constant of
Citation
Nano Hybrids Vol. 3 (2013)pp 1-23Publisher
Sensort.ab, Department of Chemistry, University of Western Cape, Moderddam Road, Bellville, Enerqy and Processes Division, Materials Science and Manufacturing, Council for Scientific and Industrial Research (CSIR) Pretoria 0001, South Africa