Novel thiophene symmetrical Schiff base compounds as corrosion inhibitor for mild steel in acidic media
By S. Issaadi, T. Douadi, A. Zouaoui, S. Chafaa, M. Khan, G. Bouet. 2011
314 citations recorded by the source corpus.
Abstract The inhibiting effect of two Schiff bases on the corrosion of the mild steel (MS) in 1 M HCl has been studied by electrochemical impedance spectroscopy (EIS) and Tafel polarisation measurements. The Schiff bases, 4,4′-bis(3-carboxaldehyde thiophene) diphenyl diimino ether ( L 1 ) and 4,4′-bis(3-carboxaldehyde thiophene) diphenyl diimino ethane ( L 2 ), were synthesized using 3-carboxaldehydethiophene and its corresponding amine. Polarisation curves reveal that both compounds are mixed type (cathodic/anodic) inhibitors and inhibition efficiency (% IE) increases with increasing concentration of compounds. It is suggested that their effects depend on their concentrations and the molecular structures. Adsorption of compounds on mild steel surface is spontaneous and obeys Langmuir’s isotherm.
Subfields: Civil and Structural Engineering, Materials Chemistry, Metals and Alloys
View Paper: https://www.semanticscholar.org/paper/d2837584d0aa1864774bbe21842cf9867be8a2a6
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Citations in the corpus
- Corrosion inhibition of mild steel in acidic solution by Tagetes erecta (Marigold flower) extract as a green inhibitor (2014, background): “To perform the above processes at a controlled rate of corrosion, a number of organic compounds have been studied and employed as corrosion inhibitors from time to time [6,7].”
- Corrosion inhibition of mild steel by two new S-heterocyclic compounds in 1 M HCl: Experimental and computational study (2015, methodology): “As important S-heterocyclic compounds, Schiff’s bases are also used as efficient inhibitors for mild steel corrosion in HCl media due to the presence of AC@NA group [16,17].”
- Synergistic inhibition effect of potassium iodide and novel Schiff bases on X65 steel corrosion in 0.5 M H2SO4 (2013, background): “Increasing popularity of Schiff bases in the field of corrosion inhibition science based on the ease of synthesis from relatively inexpensive starting materials and their eco-friendly or low toxic properties [12,13].”