Abstract
BackgroundBased on the consideration of green and safety in industrial production, the demand and desire for green corrosion inhibitors are increasingly strong. MethodsIn this study, we selected Leonurus japonicus Houtt. leaves extract (LLE) extracted by water. Electrochemistry experiments and morphology characterization showed excellent anti-corrosion performance of LLE for copper in 0.5 mol∙L1 H2SO4. The chemical bond information measured by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) indicated that LLE adsorbed on Cu/H2SO4 interface by chemical bonding. Through quantum chemical calculation and molecular dynamics simulation analysis, the adsorption reaction mechanism was profoundly studied. Significant findsElectrochemical test data showed that the inhibition efficiency of 400mg/L LLE arrived at 90% at 298 K, 308K and 318 K. After processing the data, it is concluded that LLE protective film belonged to Langmuir adsorption. By calculating thermodynamic and kinetic parameters of corrosion, it is found that the activation complex is formed by the binding of Cu+ and LLE in the adsorption layer.
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 callMore From: Journal of the Taiwan Institute of Chemical Engineers
Disclaimer: 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.
