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Anti-Corrosion Coating Formation by a Biopolymeric Extract of Artemisia herba-alba Plant: Experimental and Theoretical Investigations.
- Source :
- Coatings (2079-6412); Mar2023, Vol. 13 Issue 3, p611, 21p
- Publication Year :
- 2023
-
Abstract
- In this modest work, a local biopolymer (CHA), biodegradable, non-toxic, and soluble in acidic media, was extracted from the plant Artemisia herba-alba located in the eastern region of Morocco, and characterized by FT-IR, in order to valorize it as a corrosion inhibitor of mild steel in 1 M HCl medium. The electrochemical tests show that the extract is an excellent corrosion protective agent, reaching a maximum value of 96.17% at the concentration of 800 mg/L in the inhibitor. The potentiodynamic polarization (PDP) curves indicate the mixed behavior of the extract, to reduce the current density from 3.445 mA/cm<superscript>2</superscript> to 0.104 mA/cm<superscript>2</superscript> in the presence of 800 mg/L in the inhibitor. The biopolymer CHA of the extract of Artemisia herba-alba undergoes the Langmuir adsorption isotherm, whose adsorption energy is −20.75 kJ/mol, which is attributed to the presence of electrostatic and covalent bonds. In addition, the visualization of the metal surface by a scanning electron microscope (SEM) indicates the formation of a protective layer formed by the extracts of Artemisia herba-alba, which confirms the protective characteristic of the extract used. Theoretical investigations by DFT, MD, and MC confirm previous experimental results. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20796412
- Volume :
- 13
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Coatings (2079-6412)
- Publication Type :
- Academic Journal
- Accession number :
- 162748535
- Full Text :
- https://doi.org/10.3390/coatings13030611