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Statistical analysis study on optimization of 4-acetylpyridine thiosemicarbazone as corrrosion inhibitor

Mohamad Alwi, Muhammad Ammar and Ahmad, Mohammad Norazmi and Abdullah, Erna Normaya (2020) Statistical analysis study on optimization of 4-acetylpyridine thiosemicarbazone as corrrosion inhibitor. In: Virtual Symposium on Sciences 2020 (VSoS 2020), 2nd - 3rd November 2020, UiTM, Negeri Sembilan. (Unpublished)

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Abstract

4-Acetylpyridine thiosemicarbazone (4-APT) was identified to have the properties of corrosion inhibitor towards copper strips. Hence, the purpose of this research was to optimize the 4-APT by using Response Surface Methodology (RSM). The optimum result obtained of inhibition efficiency response was 89.89 %. The adsorption of 4-APT on the copper strip surface obeys the Langmuir isotherm, and the thermodynamic parameters were also determined and discussed. The potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements were carried out which the results show that 4-APT is a good corrosion inhibitor, retarding both cathodic and anodic reactions in hydrochloric acid. In addition, the surface morphology of copper strip was examined with scanning electron microscopy (SEM) and the binding energy by XPS showed the protective effect of inhibited solutions. Then, the correlation between the interaction of corrosion inhibition efficiency and electronic properties of inhibitors was investigated by using density functional theory and molecular dynamic method. Theoretical results clearly showed that 4-APT exhibit good inhibition based on high energy gap and binding interaction energy.

Item Type: Conference or Workshop Item (Slide Presentation)
Additional Information: 7148/86951
Uncontrolled Keywords: Corrosion Inhibitor, SEM, XPS, DFT
Subjects: Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Science > Department of Chemistry
Depositing User: Dr Erna Normaya Abdullah
Date Deposited: 06 Jan 2021 17:45
Last Modified: 06 Jan 2021 17:45
URI: http://irep.iium.edu.my/id/eprint/86951

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