Effect of adenine, guanine and hypoxanthine on the corrosion of mild steel in H3PO4
Date
2015
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
U. P.
Abstract
The corrosion inhibition potentials of adenine (AD), guanine (GU) and hypoxanthine (HYP) on the corrosion of mild steel in 0.1 M H3PO4 was investigated at 303 and 333 K using weight loss and potentiodynamic polarization techniques. The results obtained, indicated that AD, GU and HYP inhibited the corrosion of mild steel in phosphoric acid. Results obtained from potentiodynamic polarization studies showed that AD, GU and HYP acted as mixed corrosion inhibitors by retarding both the anodic and cathodic half reactions of the corrosion process. Iodide ions, I- increased inhibition efficiencies of the purines. Adsorption of AD, GU and HYP on the mild steel surface was spontaneous and aligned with Langmuir isotherm model.
Description
This research was conducted in collaboration with a staff from FUTO
Keywords
Adsorption, corrosion inhibition, potentiodynamic polarization, Department of Chemistry
Citation
Chahul, H. F., Akalezi, C. O. & Ayuba, A. M. (2015 ). Effect of adenine, guanine and hypoxanthine on the corrosion of mild steel in H3PO4. International Journal of Chemical Science, 7(1), 86 - 100