Experimental and theoretical insights into copper corrosion inhibition by protonated amino-acids

Amel Sedik; Samah Athmani; Adel Saoudi; Hana Ferkous; Nazih Ribouh; Djahida Lerari; Khaldoun Bachari; Souad Djellali; Malika Berredjem; Ramazan Solmaz; Manawwer Alam; Byong-Hun Jeon; Yacine Benguerba

doi:10.1039/D2RA03535A

Experimental and theoretical insights into copper corrosion inhibition by protonated amino-acids

Amel Sedik,*^ab Samah Athmani,^a Adel Saoudi,^ad Hana Ferkous,

^c Nazih Ribouh,^b Djahida Lerari,^a Khaldoun Bachari,^a Souad Djellali,^e Malika Berredjem,

^f Ramazan Solmaz,^g Manawwer Alam,^h Byong-Hun Jeon

*ⁱ and Yacine Benguerba

*^j

Author affiliations

* Corresponding authors

^a Scientific and Technical Research Center in Physico-chemical Analysis, BP 384, Bou-Ismail Industrial Zone, Tipaza, Algeria
E-mail: Amelsedik2015@gmail.com

^b Nanomaterials, Corrosion and Surface Treatment Laboratory (LNMCT), Badji Mokhtar University, BP 12, 23000 Annaba, Algeria

^c Laboratoire de Génie Mécanique et Matériaux, Faculté de Technologie, Université de Skikda, Skikda, Algeria

^d Metallurgy and Materials Engineering Laboratory (LMGM), BADJI Mokhtar – Annaba University, PO 12, Algeria

^e Laboratoire de Physico-Chimie des Hauts Polymères (LPCHP), Faculty of Technology, University Ferhat Abbas Setif 1, Setif, Algeria

^f Laboratory of Applied Organic Chemistry LCOA, Synthesis of Biomolecules and Molecular Modelling Group, Badji-Mokhtar – Annaba University, Box 12, 23000 Annaba, Algeria

^g Bingöl University, Health Sciences Faculty, Occupational Health and Safety Department, Bingöl, Türkiye

^h Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh, Saudi Arabia

ⁱ Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
E-mail: bhjeon@hanyang.ac.kr

^j Laboratoire de Biopharmacie Et Pharmacotechnie (LPBT), Ferhat Abbas Setif 1 University, Setif, Algeria
E-mail: yacinebenguerba@univ-setif.dz

Abstract

The effects of cysteine (Cys) and L-methionine (L-Met) on copper corrosion inhibition were examined in 1 M HNO₃ solution for short and long exposure times. Potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) were used. The EIS determined the potential for zero charges of copper (PZC) in the inhibitor solution. SEM and AFM have been used to study material surfaces. Energy-dispersive X-ray spectroscopy (EDS) was used to identify surface elemental composition. DFT and molecular dynamics simulations explored the interaction between protonated amino acids and aggressive media anions on a copper (111) surface.

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Experimental and theoretical insights into copper corrosion inhibition by protonated amino-acids

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Experimental and theoretical insights into copper corrosion inhibition by protonated amino-acids

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