Cleome arabica L. extract as a novel green corrosion inhibitor for AISI 1045 carbon steel in 0.5 M HCl: insights from experimental and theoretical DFT analyses.

Autor: Ait Bouabdallah I; Department of Industrial Chemistry, Faculty of Science and Technology, Biskra University Biskra 07000 Algeria.; Molecular Chemistry and Environment Laboratory, University of Biskra Biskra Algeria., Adjal F; Department of Industrial Chemistry, Faculty of Science and Technology, Biskra University Biskra 07000 Algeria.; Laboratory of Environmental Materials, Chemical Process and Sustainable Development, Faculty of Science and Technology, University of Biskra Biskra 07000 Algeria.; Laboratory for the Development of Automatic and Intelligent Control Systems in Agriculture in Arid Regions, Department of Industrial Chemistry, University of Biskra PO Box 145 07000 Biskra Algeria., Zaabar A; Laboratory of Materials and Sustainable Development (LMDD), Faculty of Applied Sciences, University of Bouira 10000 Bouira Algeria.; Laboratory of Electrochemistry, Corrosion, and Energy Valorization (LECVE), Faculty of Technology, University of Bejaia 06000 Bejaia Algeria., Benchikh A; Laboratory of Electrochemistry, Corrosion, and Energy Valorization (LECVE), Faculty of Technology, University of Bejaia 06000 Bejaia Algeria., Guerniche D; Centre de Recherche Scientifique et Technique en Analyses Physico-chimiques(CRAPC) BP384 Bou-Ismail RP 42004 Tipaza Algeria., Ait Ramdane-Terbouche C; Centre de Recherche Scientifique et Technique en Analyses Physico-chimiques(CRAPC) BP384 Bou-Ismail RP 42004 Tipaza Algeria., Piedade AP; University of Coimbra, CEMMPRE, Department of Mechanical Engineering 3030-788 Coimbra Portugal., Ibrahim MZ; Department of Mechanical Engineering, Faculty of Engineering, University of Malaya 50603 Kuala Lumpur Malaysia.; Department of Design and Production Engineering, Faculty of Engineering, Ain Shams University Cairo 11517 Egypt.; Advanced Manufacturing & Material Processing (AMMP) Research Centre, Department of Mechanical Engineering, Faculty of Engineering, University of Malaya 50603 Kuala Lumpur Malaysia., Nasrallah N; Laboratory of Reaction Engineering, FMEPE, USTHB BP 32 Algiers Algeria., Abdi A; Laboratory of Reaction Engineering, FMEPE, USTHB BP 32 Algiers Algeria.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2024 Nov 14; Vol. 14 (49), pp. 36423-36436. Date of Electronic Publication: 2024 Nov 14 (Print Publication: 2024).
DOI: 10.1039/d4ra06477a
Abstrakt: The search for sustainable, cost-effective and environmentally friendly corrosion inhibitors for hydrochloric acid (HCl) solution in industrial applications has garnered increasing interest in plant extracts and their refined metabolites. In this research, Cleome arabica L. (CA) extract, found in the Algerian Sahara, was considered due to its low cost compared to other studied plants and higher content of active compounds, thereby emerging as a promising candidate and offering the potential to promote a circular economy model. This study assessed the effectiveness of CA extract as a green corrosion inhibitor for AISI 1045 carbon steel in 0.5 M HCl solution and highlighted its potential to advance the field of green corrosion inhibitors. ATR-FTIR and LC-ESI-MS/MS analyses revealed the presence of significant organic compounds, including coumaric acid (74.58%), 4-methoxybenzoic acid (12.53%), and kaempferol (8.05%), which contributed to the corrosion inhibition. The inhibitory effectiveness of the CA extract was evaluated at five concentrations, ranging from 0.125 to 1 g L -1 , using weight loss measurements, potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). The highest inhibition efficiency ( η = 94.45%) was observed at a CA extract concentration of 1 g L -1 after 196 hours of immersion in 0.5 M HCl. Thermodynamic analysis using the Langmuir adsorption isotherm yielded a Δ G ads value of -24.737 kJ mol -1 , indicating the spontaneous adsorption of CA molecules onto the AISI 1045 surfaces, forming a protective layer, which was confirmed by SEM/EDX analysis. Density functional theory (DFT) calculations showed a significant correlation with the experimental data, confirming that CA extract is a highly efficient and environmentally friendly corrosion inhibitor.
Competing Interests: The authors declare that they have no conflicts of interest.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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