Abstract
Different concentrations of Citrus aurantium with deoxyribonucleic acid as additive (Citrus aurantiumDNA) were co-deposited with nickel via electrodeposition. The coatings were formed in an aqueous nickel bath with the incorporation of Citrus aurantiumDNA concentrations at different temperatures, and the influence of the acid and the temperature on the microstructure of the coatings was studied. The data via adsorption isotherms were also analyzed. The characteristics of the morphological structure of the coatings were examined by scanning electron microscopy. The results demonstrated that Citrus aurantiumDNA additives were evenly dispersed on the mild steel surface during the nickel coatings deposition; a current density of 1.5 A/dm3 used during the electrolysis process was favourable in attaining the maximum coating efficiency (~70%) at 25°C and 20 mg/L of Citrus aurantiumDNA. The optimum temperature for electroplating was found to be 25°C. The data spawned from the adsorption Freundlich and Langmuir isotherms showed two preferred temperatures: i.e. 25 and 40°C via the former and 55 and 70°C via the latter. The thermodynamic assessment confirms that the adsorption mechanism of the Citrus aurantiumDNA additive in a Ni electrolyte solution on mild steel in an HCl solution is physisorption at the investigated temperatures. X-ray diffraction revealed some broad peaks signifying an amorphous structure at all Citrus aurantiumDNA concentrations.
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06 May 2021
An Erratum to this paper has been published: https://doi.org/10.3103/S1068375521020150
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The original online version of this article was revised: The name of the seventh author should read Itopa Godwin Akande.
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Oluranti Agboola, Johnson, F., Sanni, S.E. et al. Thermodynamic, Adsorption Isotherms and Electrochemical Investigations of Nickel Electroplating on Mild Steel in Electrolyte Containing Deoxyribonucleic Acid from Citrus aurantium as Additive. Surf. Engin. Appl.Electrochem. 56, 684–696 (2020). https://doi.org/10.3103/S1068375520060022
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DOI: https://doi.org/10.3103/S1068375520060022