Journal
SUSTAINABLE CHEMISTRY AND PHARMACY
Volume 23, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.scp.2021.100500
Keywords
Surface activity; Corrosion inhibition; Bilayer; multilayer adsorption
Categories
Funding
- National Natural Science Foundation of China [51701188]
- Science Foundation of Shanxi Province [201801D221088]
Ask authors/readers for more resources
The study investigated the corrosion inhibition behavior and adsorption mechanism of three novel synthetic surfactants on carbon steel in 1 M HCl solution. Results showed that T3 exhibited the highest inhibition efficiency, while the adsorption of the surfactants followed Freundlich isotherm at different concentration ranges. Both MD simulations and experimental results revealed analogous inhibition effects with the order of T3 > T2 > T1.
The corrosion inhibition behavior and adsorption mechanism of three novel synthetic surfactants in 1 M HCl solution on carbon steel were investigated. The PP results confirmed that all the synthetic surfactants behave as mixed-type inhibitors, while the EIS results validated the existence of a protective layer by the adsorption of inhibitor molecules on the carbon surface. T3 was observed to offer the highest inhibition efficiency (eta w, 96.28%) at 1 mM by the static weight loss measurements due to two different hydrophobic chains which form a more compact film with the crosswise arrangement. SEM/EDS and XPS results revealed the formation of the surfactants film on the carbon steel surface. Molecular dynamics simulation (MD) was further executed to determine the adsorption mechanism in molecular level insights. In addition, a linear correlation between surface activity (gamma) and corrosion inhibition efficiency (eta w) was verified. The adsorption of the prepared surfactants followed the Freundlich isotherm at different concentration ranges. Moreover, the bilayer/multilayer adsorption mechanism was also proposed and confirmed by experimental, adsorption isotherm studies and MD. Hence, both MD simulations and experimental results revealed the analogous inhibition with the order follows: T3 > T2 > T1.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available