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Thakur A, Dagdag O, Berisha A, Ebenso E, Kumar A, Sharma S, Ganjoo R, Assad H. Experimental accompanied with computational (atomic/electronic)-level simulation investigations of Polygonum cuspidatum root extract as sustainable corrosion inhibitor for mild steel in aggressive corrosive media. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34141-9. [PMID: 38961020 DOI: 10.1007/s11356-024-34141-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 06/23/2024] [Indexed: 07/05/2024]
Abstract
This study investigates the corrosion inhibition potential of Polygonum cuspidatum root extract (PCRE) on mild steel in a 0.5 M HCl acidic environment. Herein, various techniques including electrochemical and gravimetric measurements were employed, along with scanning electron microscopy (SEM) and contact angle (CA) measurements for surface morphology analysis. The impedance study revealed a concentration-dependent enhancement in corrosion resistance, classifying PCRE as a mixed-type inhibitor (i.e., inhibits both anodic and cathodic reactions). The highest efficiency, 96.71% at 298 K, was observed at a 1000-ppm PCRE concentration. Langmuir model computations suggested chemisorption and physisorption of PCRE on the electrode substrate. Increased Rp (from 28.648 to 174.01 Ω) and Rct (185.74 Ω cm2) at 1000 ppm demonstrated improved corrosion resistance. Additionally, SEM analysis displayed a uniform, protective surface, reducing metal degradation. Theoretical calculations highlighted strong interactions between PCRE and mild steel, with a low energy gap (ΔE), as follows: 1-O-methylemodin (2.267 eV) < emodin (2.288 eV) < emodin-1-O-glucoside (2.343 eV) < piceid (2.931 eV) < resveratrol (2.952 eV), confirming PCRE's excellent micro-level anti-corrosion capabilities. This eco-benign corrosion inhibitor offers sustainable, low-toxicity protection, cost-effectiveness, and versatile performance, surpassing commercial counterparts while aligning with sustainability goals.
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Affiliation(s)
- Abhinay Thakur
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Omar Dagdag
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1709, South Africa
- Department of Mechanical Engineering, Gachon University, Seongnam, 13120, Republic of Korea
| | - Avni Berisha
- Department of Chemistry, Faculty of Natural and Mathematics Science, University of Prishtina, 10000, Prishtina, Kosovo
| | - Eno Ebenso
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Johannesburg, 1709, South Africa
| | - Ashish Kumar
- Nalanda College of Engineering, Science, Technology and Technical Education Department, Government of Bihar, Bihar Engineering University, 803108, Patna, India.
| | - Shveta Sharma
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Richika Ganjoo
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab, India
| | - Humira Assad
- Department of Chemistry, School of Chemical Engineering and Physical Sciences, Lovely Professional University, Phagwara, Punjab, India
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Syam SM, El-Katori EE, Elhenawy AA, Nady H, Eid S. An examination of the effectiveness of the expired drug isoprinosine in preventing aluminum corrosion in alkaline solutions using both computational and experimental techniques. RSC Adv 2024; 14:11244-11257. [PMID: 38590354 PMCID: PMC11000097 DOI: 10.1039/d4ra00158c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Accepted: 03/29/2024] [Indexed: 04/10/2024] Open
Abstract
A now-expired medication called isoprinosine was examined in NaOH (0.50 M) solutions as a potential novel inhibitor of aluminum corrosion. The inhibitory effectiveness of the isoprinosine compounds was examined utilizing different electrochemical tests (open circuit potential OCP, potentiodynamic polarization and electrochemical impedance spectroscopy EIS), surface examination and quantum calculations. Increases in isoprinosine concentration were seen to increase the inhibitory efficacy. It was discovered that the inhibitory action, which results in the inhibition of charge and mass transfer and protects the aluminum against harmful ions, was brought on by isoprinosine molecules adhering to the aluminum surface. Additionally, the surface morphology of Al dissolved in a 0.50 M NaOH solution without and with the existence of an isoprinosine molecule was analyzed using SEM/EDX and AFM techniques. Utilizing the optimized geometric parameters of the ground state molecules, FMO simulations and additional studies were executed successfully utilizing the density functional theory (DFT/B3LYP/6-311++G(d,p)). Based on the expected energies for the molecular carriers of charge, HOMO and LUMO. Calculations are also done for the AIM charges, Fukui functions, AIM charges, and excitation energies. Furthermore, molecular dynamic was simulated to explore the corrosion inhibition efficiency and mechanism of inhibition. The computational results are in the same agreement with experimental results, showing that isoprinosine can inhibit the corrosion of aluminum in 0.5 M NaOH.
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Affiliation(s)
- S M Syam
- Chemistry Department, Faculty of Science, Benha University Benha Egypt
| | - Emad E El-Katori
- Chemistry Department, Faculty of Science, New Valley University El-Kharga 72511 Egypt
| | - Ahmed A Elhenawy
- Chemistry Department, Faculty of Science, Al-Azhar University Nasr City 11884 Cairo Egypt
- Chemistry Department, Faculty of Science and Art, AlBaha University Mukhwah Al Bahah 65731 Saudi Arabia
| | - H Nady
- Chemistry Department, College of Science and Arts, Jouf University Alqurayat Saudi Arabia
- Chemistry Department, Faculty of Science, Fayoum University Fayoum Egypt
| | - Salah Eid
- Chemistry Department, Faculty of Science, Benha University Benha Egypt
- Chemistry Department, College of Science and Arts, Jouf University Alqurayat Saudi Arabia
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Monaci S, Minudri D, Guazzelli L, Mezzetta A, Mecerreyes D, Forsyth M, Somers A. Lignin-Derivative Ionic Liquids as Corrosion Inhibitors. Molecules 2023; 28:5568. [PMID: 37513439 PMCID: PMC10384825 DOI: 10.3390/molecules28145568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/17/2023] [Accepted: 07/19/2023] [Indexed: 07/30/2023] Open
Abstract
Corrosion is a significant problem that negatively affects a wide range of structures and buildings, resulting in their premature failure, which causes safety hazards and significant economic loss. For this reason, various approaches have been developed to prevent or minimize the effects of corrosion, including corrosion inhibitors. Recently, biobased inhibitors have gained a certain interest thanks to their unique properties, eco-friendliness, and availability. Among all the green precursors, lignin is of particular interest, being a natural polymer that can be obtained from different sources including agricultural residues. Corrosion inhibitors based on ionic liquids (ILs) also present interesting advantages, such as low volatility and high tunability. If combined, it may be possible to obtain new lignin-based ILs that present interesting corrosion inhibitor properties. In this work, the inhibition properties of new biobased lignin ILs and the influence of anions and cations on the corrosion of mild steel in an aqueous solution of 0.01 M NaCl were investigated by Potentiostatic Electrochemical Impedance Spectroscopy (PEIS) and Cyclic Potentiodynamic Polarization (CPP). Moreover, the surface was characterized using SEM, EDS, and optical profilometry. The IL choline syringate showed promising performance, reducing the corrosion current after 24 h immersion in 0.01 M sodium chloride, from 1.66 µA/cm2 for the control to 0.066 µA/cm2 with 10 mM of the IL present. In addition to its performance as a corrosion inhibitor, both components of this IL also meet or exceed the current additional desired properties of such compounds, being readily available, and well tolerated in organisms and the environment.
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Affiliation(s)
- Sharon Monaci
- POLYMAT, University of the Basque Country UPV/EHU, 20018 Donostia-San Sebastian, Spain
- Institute for Frontier Materials, Deakin University, Burwood, VIC 3125, Australia
| | - Daniela Minudri
- POLYMAT, University of the Basque Country UPV/EHU, 20018 Donostia-San Sebastian, Spain
| | - Lorenzo Guazzelli
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 33, 56126 Pisa, Italy
| | - Andrea Mezzetta
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 33, 56126 Pisa, Italy
| | - David Mecerreyes
- POLYMAT, University of the Basque Country UPV/EHU, 20018 Donostia-San Sebastian, Spain
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Maria Forsyth
- POLYMAT, University of the Basque Country UPV/EHU, 20018 Donostia-San Sebastian, Spain
- Institute for Frontier Materials, Deakin University, Burwood, VIC 3125, Australia
- Ikerbasque, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Anthony Somers
- Institute for Frontier Materials, Deakin University, Burwood, VIC 3125, Australia
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Influence of Rare Earth Samarium/Ytterbium Salt on Electrochemical Corrosion Behavior of Aluminum-Based Anode for Batteries. METALS 2022. [DOI: 10.3390/met12081280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this work, effects and mechanism analysis of samarium acetate and ytterbium acetate on enhancing the electrochemical corrosion performance of aluminum-based anode for aluminum-air batteries in 3.5 wt.% NaCl are studied by methods such as weight loss tests, electrochemical measurements, anode galvanostatic discharge tests and microscopic morphology analysis. The results show that samarium acetate and ytterbium acetate are ideal electrolyte additives, and exhibit obvious inhibitory effects on the self-corrosion of 7075 aluminum alloy. The optimal concentration is 200 mg/L. Moreover, corrosion inhibitors mainly reduce the self-corrosion speed of aluminum by suppressing the microcathodic reaction, thereby promoting the improvement of the discharge performance of aluminum-air batteries. Simultaneously, it is found that after mixing samarium acetate and ytterbium acetate in different proportions, the two rare earth salts have a mutual adjustment effect. By adding different rare earth salt components, the battery capacity densities of the anode are improved by 9.6% to 16.3%. Finally, a possible model is presented to illustrate the impact mechanism of different additives on the self-corrosion process and discharge performance of aluminum-air batteries.
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