Maqola

Excellent performance of amoxicillin and potassium iodide as hybrid corrosion inhibitor for mild steel in HCl environment: Adsorption characteristics and mechanism insight

Boyuan RanNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, ChinaYujie QiangNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, ChinaXinyang LiuNational Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, ChinaLei GuoInnovation Center for Chenguang High Performance Fluorine Material, Sichuan University of Science and Engineering, Zigong 643000, ChinaAlessandra Gilda RitaccaDepartment of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, Ancona 60131, ItalyIda RitaccoDepartment of Chemistry, University of Salerno, Via Giovanni Paolo II 132, Fisciano, Salerno 84084, ItalyXianghong LiKey Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University, Kunming 650224, China

2024en

ABI

Annotatsiya

Combining inhibitors is a key strategy to increase inhibitory efficacy because of synergistic effects. In this study, a green pharmaceutical inhibitor, amoxicillin (AML), was screened and compounded with potassium iodide (KI) to successfully obtain a synergistic and highly efficient green inhibitor. The results revealed that AML/KI have excellent anticorrosion ability for Q235 steel in 1 M HCl medium. At the optimal concentration ratio of 2 mM AML +5 mM KI, the inhibition efficiency was up to 97.7%, which was significantly higher than that of AML alone (57.4%). The hybrid inhibitor remarkably hinders the corrosion process by inhibiting both the cathodic and anodic reactions. Scanning electron microscopy, electron dispersive spectroscopy, contact angle measurement, ultraviolet–visible spectrometry and X-ray photoelectron spectroscopy, as well as Fourier transform infrared spectroscopy, results further confirm the outstanding inhibitory effect and the formation of synergistic adsorption films. Through density functional theory (DFT) calculations, we discovered that the KI salt significantly enhances the adsorption characteristics of AML/KI on the Fe surface, which is consistent with the experimental findings. This research paves the way for a new breed of green hybrid corrosion inhibitors to be created.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1016/j.jmrt.2024.02.233

Iqtiboslar va manbalar

2 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar