Abstract
The influence of the concentration of the 1-Butyl-3-methylimidazolium chloride (BMIMCl) and 1-Butyl-3-methylimidazolium bromide (BMIMBr) as ionic liquids (ILs) on the corrosion inhibition of copper in 1.0 M Cl−solutions of pH 1.0 was studied. The investigation involved electrochemical polarization methods as well as electrochemical quartz crystal microbalance (EQCM) technique and scanning electron microscopy (SEM). The inhibition efficiency increases with an increase in the concentration of BMIMCl and BMIMBr. Adherent layers of inhibitors were postulated to account for the protective effect. Both of the compounds act as a mixed-type inhibitor. The values of standard free energy of adsorption suggest the chemical adsorption BMIMCl and BMIMBr on the copper surface.
Highlights
Copper and its alloys are used extensively in many kinds of chemical equipment
The present work describes a study of the corrosion of copper in 1.0 M Cl− solutions of pH 1.0 without and with different concentrations of 1-Butyl-3-methylimidazolium chloride (BMIMCl) or 1-Butyl-3-methylimidazolium bromide (BMIMBr), based on copper stationary disk electrode (SDE) voltammetry measurements as well as quartz crystal microbalance (EQCM) and scanning electron microscopy (SEM)
The effect of 1-Butyl3-methylimidazolium chloride and 1-Butyl-3-methylimidazolium bromide on the corrosion reactions of copper was determined by polarization measurements
Summary
Copper and its alloys are used extensively in many kinds of chemical equipment. Several corrosion inhibitors for copper and its alloys have been known and applied for corrosion protection. Among the numerous organic compounds tested and industrially applied as corrosion inhibitors, nontoxic are far more strategic than in the recent past These compounds include such amino acids [13,14,15] and derivatives as cysteine [16]. In the past two decades, the research in the field of green corrosion inhibitors has been addressed toward the goal of using cheap effective molecules at low or zero environmental impact These compounds include purine and adenine, which have been tested for copper corrosion in chloride [17, 18], sulfate [19], and nitrate solutions [20]. The present work describes a study of the corrosion of copper in 1.0 M Cl− solutions of pH 1.0 without and with different concentrations of 1-Butyl-3-methylimidazolium chloride (BMIMCl) or 1-Butyl-3-methylimidazolium bromide (BMIMBr), based on copper stationary disk electrode (SDE) voltammetry measurements as well as quartz crystal microbalance (EQCM) and scanning electron microscopy (SEM)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
