Experimental and theoretical studies of hexylmeythylimidazolium tetrafluoroborate ionic liquid as cathodic corrosion inhibitor for mild steel

被引：21
|
作者：
Kumar, Pankaj [1 ]
Soni, Isha [1 ]
Jayaprakash, Gururaj Kudur [1 ,2 ,4 ]
Kumar, Sandeep [2 ]
Rao, Srilatha [2 ]
Flores -Moreno, Roberto [3 ]
Sowmyashree, A. S. [2 ]
机构：
[1] Shoolini Univ, Sch Adv Chem Sci, Lab Quantum Electrochem, Solan 173229, Himachal Prades, India
[2] Nitte Meenakshi Inst Technol, Dept Chem, Bangalore 560064, Karnataka, India
[3] Univ Guadalajara, Dept Quim, Blvd Marcelino Garcia Barragan 1421, Guadalajara 44430, Jal, Mexico
[4] Nitte Meenakshi Inst Technol, Bangalore, India
来源：
INORGANIC CHEMISTRY COMMUNICATIONS | 2022年 / 146卷
关键词：
Ionic liquid; Electrochemical studies; Corrosion inhibition; DFT; Mild steel (MS); SENSITIVE VOLTAMMETRIC SENSOR; CARBON-STEEL; ADSORPTION; TEMPERATURE; METALS; CLASSIFICATION; DERIVATIVES; MEDIA; FUKUI; DFT;
D O I：
10.1016/j.inoche.2022.110110
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Ionic liquids (ILs) are principally investigated for their utilization and applications in electrochemistry and their prospective approach to corrosion prevention has attracted a lot of attention. This article explains the synthesis and utility of a room temperature imidazole-based ionic liquid namely 1-hexyl-3-methylimidazolium tetra-fluoroborate (HMIM.BF4) as an inhibitor of corrosion on the mild steel surface. The HMIM.BF4 showed the cathodic type of steel corrosion inhibition with both chemisorption and physisorption nature obeying Langmuir and Temkin adsorption isotherms. At concentrations greater than 100 ppm, the inhibition efficiency of HMIM. BF4 increases and was found to be 96.27% at 300 ppm. Quantum chemical studies (frontier molecular orbitals and analytical Fukui) have been used to locate the redox-active sites on the inhibitor.
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页数：11
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