Corrosion inhibition of mild steel in acidic solution by Tagetes erecta (Marigold flower) extract as a green inhibitor
Corrosion inhibition of mild steel in acidic solution by Tagetes erecta (Marigold flower) extract as a green inhibitor
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DOI：
10.1016/j.corsci.2014.04.036
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发表时间：
2014-08-01
影响因子：
8.3
通讯作者：
Singh, M. M.
中科院分区：
文献类型：
--
作者：
Mourya, Punita;Banerjee, Sitashree;Singh, M. M.
用重量法、动电位极化法和交流阻抗法研究了万寿菊提取物[TEE]对低碳钢在0.5M H_2SO_4溶液中的缓蚀性能。Tafel极化研究表明，TEE是一种有效的混合缓蚀剂。缓蚀剂在低碳钢表面的吸附符合朗缪尔吸附等温式，为单分子层吸附。控制吸附的活化参数表明缓蚀剂是物理吸附的。量子化学计算结果表明，分子和质子化叶黄素的吸附具有很高的可行性。(C)2014爱思唯尔有限公司。保留所有权利。
The extract of Tagetes erecta (Marigold flower) [TEE] has been evaluated as a corrosion inhibitor for mild steel in 0.5 M H2SO4 solution by means of gravimetric, potentiodynamic polarization and electrochemical impedance spectroscopic measurements. Tafel polarization studies reveal that TEE acts as an efficient mixed inhibitor. The adsorption of the inhibitor on the mild steel (MS) surface follows the Langmuir adsorption isotherm, indicating monolayer adsorption. The activation parameters governing adsorption show that the inhibitor is physically adsorbed. The results of quantum chemical calculation indicate high feasibility of adsorption of molecular and protonated Lutein, a major component of TEE. (C) 2014 Elsevier Ltd. All rights reserved.