Exploring Sustainable Corrosion Protection with Green-Synthesized Metal Phosphonates

Published: Jan. 1, 2025

The corrosion inhibition effect of metal phosphonates Co, Ni, and Cu (MePA) based on phosphonoacetic acid (PA) the carbon steel in a 3% NaCl solution were investigated by electrochemical computational methods. Both microwave-assisted low-temperature hydrothermal synthetic methods prove to improve both time energy efficiency. obtained results from potentiodynamic polarization curves impedance spectroscopy (EIS) analysis show that after an hour immersion, efficiency (IE) was 38.98% for CoPA, 40.54% CuPA NiPA, 62.97% PA. IE PA dropped around 40% as immersion increased, indicating development porous, weakly adsorbed coating permits aggressive ions reach surface. Following 21 days NiPA CoPA considerably increase roughly 92.5%, suggesting stable, compact protective layer had formed shifting Tafel slopes indicate inhibitory action is still influenced blocking impacts. These findings suggest especially function mixed-type inhibitors, lowering cathodic anodic processes contribute corrosion. sustains data. relationship between molecular configuration MePA their efficiencies quantum chemical calculations. experimental theoretical research are good agreement.

Language: Английский

Exploring corrosion protection with greener synthesized metal phosphonates

Sustainable Chemistry and Pharmacy, Journal Year: 2025, Volume and Issue: 44, P. 101970 - 101970

Published: Feb. 26, 2025

Language: Английский