Abstract
Three Schiff's bases (SBs) namely 2-(2-hydroxybenzylidene amino) acetic acid (HBAA), 2-(4-(dimethylamino) benzylidene amino) acetic acid (DMBA), and 2-(2-hydroxy-4-methyxybenzylidene amino) acetic acid (HMBA) were synthesized and their effects on the electrochemical behavior of mild steel in 1 M HCl was investigated using gravimetric measurements, Tafel extrapolation technique, linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) methods. Tafel polarization measurements revealed that these Schiff's bases act as mixed-type inhibitors. Among the studied SBs, HMBA exhibited the best inhibition efficiency of 95% at 400 ppm concentration. Some thermodynamic parameters were also determined to investigate the mechanism of adsorption. The results obtained from weight loss and electrochemical methods are in good agreement.
| Original language | English |
|---|---|
| Pages (from-to) | 810-817 |
| Number of pages | 8 |
| Journal | Journal of Materials and Environmental Science |
| Volume | 6 |
| Issue number | 3 |
| State | Published - 2015 |
| Externally published | Yes |
Keywords
- Acid corrosion
- EIS
- Mild steel
- Thermodynamic parameter
ASJC Scopus subject areas
- Environmental Chemistry
- Waste Management and Disposal
- Pollution
- Materials Chemistry