Journal
RSC ADVANCES
Volume 10, Issue 16, Pages 9258-9273Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra07982c
Keywords
-
Categories
Funding
- Department of Science and Technology (DST), Govt. of India [GAP-225612]
- Department of Science & Technology and Biotechnology, Government of West Bengal, India [217(Sanc.)/ST/P/ST/15G-10/2017, 78(Sanc.)/ST/P/ST/6G-1/2018]
- Infrastructural Development of the Department of Chemistry, NIT Durgapur through DST-FIST grant of DST, Govt of India [SR/FST/CSI-267/2015]
Ask authors/readers for more resources
Herein, two Schiff base derivatives of vanillin and divanillin with 2-picolylamine, namely, 2-methoxy-4-((pyridin-2-ylmethylimino)methyl)phenol (compound A) and 3,3 '-dimethoxy-5,5 '-bis-((pyridin-2-ylmethylimino)methyl)-[1,1 '-biphenyl]-2,2 '-diol (compound B), respectively, were synthesized. Additionally, their adsorption characteristics and corrosion inhibition behavior were compared for mild steel in 1 M HCl using electrochemical impedance spectroscopy, potentiodynamic polarization and weight loss methods. Compound B was found to impart a better anti-corrosive effect (around 95% inhibition efficiency at 313 K) than compound A. The inhibitors act as effective mixed-type inhibitors and exhibit Langmuir-type adsorption behaviour. The kinetic-thermodynamic parameters together with the data obtained from density functional theory (DFT) and molecular dynamics (MD) simulations illustrate the mechanism of corrosion and mode of adsorption of both inhibitors on the metal surface. The better corrosion mitigation propensity of the dimeric form of the inhibitor (compound B) over the monomeric form (compound A) was tested experimentally and explained according to the theoretical data.
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