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Thermodynamic, chemical, and electrochemical studies of Aloe ferox Mill extract as a naturally developing copper corrosion inhibitor in HCl solution

Kaseb D. AlanaziDepartment of Chemistry, College of Science, University of Ha’il, 81442, Hail, Saudi ArabiaBasmah H. AlshammariDepartment of Chemistry, College of Science, University of Ha’il, 81442, Hail, Saudi ArabiaTahani Y. A. AlanaziDepartment of Chemistry, College of Science, University of Ha’il, 81442, Hail, Saudi ArabiaOdeh A. O. AlshammariDepartment of Chemistry, College of Science, University of Ha’il, 81442, Hail, Saudi ArabiaAshraf M. AshmawyChemistry Department, Faculty of Science (boys), Al-Azhar University, Cairo, 11884, EgyptMeshari M. AljohaniDepartment of Chemistry, College of Science, Tabuk University, Tabuk, Saudi ArabiaIsma HaqInstitute of Chemistry, University of the Punjab, Quaid-e-Azam Campus, Lahore, PakistanReda Abdel‐HameedBasic Science Department, Preparatory Year, University of Ha’il, 1560, Hail, Kingdom of Saudi ArabiaM.A. DeyabEgyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt

2024en

ABI

Annotatsiya

Abstract Copper can be susceptible to corrosion in acidic cleaning solutions for desalination system, especially if the solution is highly concentrated or if the cleaning process involves extended exposure to the acid. In the current work, Aloe ferox Mill (AFM extract) can be used as a natural origin corrosion inhibitor for copper in 1.0 M HCl solution. The corrosion mitigation qualities of AFM extract were assessed by means of electrochemical, gravimetric, and surface examinations. AFM extract is a mixed-type inhibitor, based on polarization research findings. The inhibitory effectiveness of AFM extract rises with concentration, reaching its maximum level (93.3%) at 250 mg L –1 . The inclusion of AFM extract raises the activation energy for the corrosion reaction from 7.15 kJ mol –1 (blank solution) to 28.6 kJ mol –1 (at 250 mg L –1 AFM extract).

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DOI: 10.1038/s41598-024-62169-x

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