Yanli Lv, Fanze Kong, L. Zhou
Dec 11, 2020
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0
Influential Citations
15
Citations
Journal
Journal of Molecular Structure
Abstract
Abstract The anticorrosive performances of 1,10-phenanthroimidazole derivatives 2-phenyl-1H-imidazo[4,5-f][1,10]phenanthroline (IPB) and 1,4-di (1H-imidazo [4,5-f] [ 1 , 10 ] phenanthrolin-2-yl)benzene (DIPB) for mild steel (MS) in 1 M HCl media were survey ed via gravimetric, electrochemical and thermodynamic calculation methods. IPB and DIPB could adsorb spontaneously on the MS by two adsorption modes with predominate chemisorption, and the process obeyed Langmuir adsorption isotherm. Furthermore, IPB and DIPB were mixed-type inhibitors. Meanwhile, the UV-vis absorption spectroscopy was used to investigate the forming of complex between inhibitor and Fe. The structure-activity relationship was also discussed by means of theoretical calculation. Those results demonstrate that this type of compounds with multiple active sites exhibit great potential in corrosion inhibition of MS in acidic media.