A novel thiophene Schiff base as an efficient corrosion inhibitor for mild steel in 1.0 M HCl: Electrochemical and quantum chemical studies

被引：94
作者：
Tezcan, Fatih [1 ]
Yerlikaya, Gurbet [1 ]
Mahmood, Asad [1 ]
Kardas, Gulfeza [1 ]
机构：
[1] Cukurova Univ, Sci & Letters Fac, Dept Chem, TR-01330 Adana, Turkey
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2018年 / 269卷
关键词：
Mild steel; Schiff base; EIS; Polarization; ICP-OES; DFT; HYDROCHLORIC-ACID SOLUTION; CARBON-STEEL; THEORETICAL EVALUATION; CHLORIDE SOLUTION; ORGANIC-COMPOUNDS; DERIVATIVES; MEDIA; ADSORPTION; POLARIZATION; PERFORMANCE;
D O I：
10.1016/j.molliq.2018.08.025
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study presents the synthesis, structural characterization, and inhibition efficiency of a new sulphur containing Schiff base (4-((thiophene-2-ylmethylene)amino)benzamide) (4-TAB) on mild steel in 1.0 M HCl solution. The inhibition efficiency of the 4-TAB is analysed by using electrochemical analysis, solution assay analysis, and theoretical calculation. Electrochemical impedance spectroscopy and linear polarization resistance results show the highest inhibitor efficiency of 96.8% and 96.5%. respectively. The potentiodynamic polarization measurements indicate a decreasing corrosion rate from 9.104 to 0.481 mm year(-1) by addition of 4-TAB. Theoretical calculations are performed using the density functional theory to further confirm and compare our experimental results. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：398 / 406
页数：9
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