Year: 2025
Type: article
Abstract: The possibility of using Vanillin as an eco-friendly corrosion inhibitor for Al in 0.5 M H 2 SO 4 has been evaluated, examining concentrations ranging from 0 to 10 mM at 25, 40, and 60 °C. Results indicate that Vanillin is a mixed corrosion inhibitor. Its inhibitory effect can be attributed to aldehyde functional groups forming a protective layer by reacting with Al 3+ ions, which are chemisorbed onto the metal’s surface, as was demonstrated via SEM analysis of the metal surface. The I corr and R p values estimated from the electrochemical characterization tend to improve in the presence of Vanillin . However, inhibition efficiency is affected by temperature, resulting in lower values. Also, the weight loss analyses demonstrated that Vanillin is desorbed over time and temperature. The SEM micrographs taken after weight loss show an aluminum surface with several pits in the absence of inhibitor. Otherwise, EDS analyses show the presence of carbon, confirming the Vanillin adsorption on the metal surface.
Source: Scientific Reports
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,690
OpenAlex ID: W4413398317