Inhibition of Mild Steel Corrosion in Acidic Medium by Extract ofSpilanthes UliginosaLeaves

被引：12
作者：
Durodola, Solomon S. [1 ]
Adekunle, Abolanle S. [1 ]
Olasunkanmi, Lukman O. [1 ]
Oyekunle, John A. O. [1 ]
机构：
[1] Obafemi Awolowo Univ, Dept Chem, Ife 220005, Nigeria
来源：
ELECTROANALYSIS | 2020年 / 32卷 / 12期
关键词：
Mild steel; Spilanthes uliginosaleaves; Weight loss method; Polarization; Thermodynamic; Nyquist plot; 1 M HCL; ADSORPTION; DERIVATIVES; ALUMINUM;
D O I：
10.1002/elan.202060227
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Corrosion of mild steel in 2.0 M HCl was investigated in the presence of various concentration of methanolic extract ofSpilanthes uliginosaleaves. Inhibition efficiency was evaluated by gravimetric and electrochemical methods and was found to increase with increase in concentration of the extract. The results showed that inhibitive actions of the extract occurred as a result of adsorption of molecular constituents of the leave extract on mild steel in acidic medium. Potentiodynamic polarization results confirmed that the extract act as mixed-type inhibitor.
引用
收藏
页码：2693 / 2702
页数：10
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