New Fe2O3 Nanoparticles Modified Carbon Paste Electrode: A Cyclic Voltammetric Study | ||||
| Egyptian Journal of Chemistry | ||||
| Article 66, Volume 64, Issue 12, December 2021, Page 7509-7515 PDF (396.51 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2021.100563.4672 | ||||
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| Authors | ||||
Emad Salaam Abood   ; Ahmed Salim Abed; Zahara Njah Salman
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| Department of Medical Physics, Hilla University College, Babylon, Iraq. | ||||
| Abstract | ||||
| The cyclic voltammetry (CV) technique was accustomed to look into the electro oxidation of iron ions in water using a novel carbon paste electrode CPE enhanced with iron oxide nanoparticles. The revised electrode exhibited a high resolving function, allowing the overlapping voltametric response of Fe-ion to be resolved into a single well-defined peak. The voltage differential between Epa (anodic) and Epc (cathodic) was higher than 200 mV; this range is referred to as the quest-reversible mechanism. At temperatures ranging from 15 to 35 °C, the kinetics of the electrode were investigated. Voltammogram data revealed a rise in temperature, which resulted in an increase in negative shift, diffusion electron transfer in the Fe redox reaction. The Randles-Sevcik equation yielded a diffusion coefficient of 4.9 x 10-5; the rate constant K was 2.3 x 10-4; and the peak current of Fe-ion rose linearly with concentrations ranging from 1 to 5 ppm. | ||||
| Keywords | ||||
| Cyclic voltammetry; Electrode; Fe2O3 nanoparticles; Hydrothermal method | ||||
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