The role of pH in corrosion inhibition of tin using the proline amino acid: theoretical and experimental investigations.

ABSTRACT: Herein, the effect of a mediums' pH on the interfacial interactions between proline (Pro) amino acid and tin metal was studied. In this work, acidic and near-neutral pH values were considered. DFT-based calculations and Monte Carlo simulations were carried out in the aqueous phase to understand the role of pH in Pro/tin interactions. To confirm this role in terms of inhibition efficiency, the CC and AC electrochemical techniques were used. Based on the calculated parameters, it was outlined that the partially protonated Pro form exhibits significant affinity to interact with tin metal in near-neutral media. However, in acidic media, its affinity is decreased, whereas the full protonated form was found to be solvated in the solution and its interaction with the tin surface was not favorable

SUBMITTER: El Ibrahimi B 

PROVIDER: S-EPMC9056173 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature