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首页> 外文期刊>International Journal of Electrochemical Science >Structural Origin of Corrosion Inhibition Effect over 2-(2- Hydroxyphenyl)benzothiazole on Steel in HCl Medium
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Structural Origin of Corrosion Inhibition Effect over 2-(2- Hydroxyphenyl)benzothiazole on Steel in HCl Medium

机译：HCl介质中2-（2-羟苯基）苯并噻唑对钢的缓蚀作用的结构起源

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摘要

The inhibition effect of 2-(2-Hydroxyphenyl)benzothiazole (HBT), a newly synthesized benzothiazolederivative, on mild steel in 1 M HCl medium has been investigated by utilizing weight lossmeasurements, electrochemical methods and morphology characterization. The results indicate that HBTexhibited a superior corrosion inhibition efficiency, which reached approximately 95% with the additionof 0.07 mM HBT. Electrochemical tests illustrate that HBT is a mixed-type inhibitor. According to theLangmuir adsorption isotherm, the thermodynamic and kinetic parameters of the adsorption processcomplied with a physical-adsorption mechanism. Furthermore, computational calculations based ondensity functional theory reveal the relation between the electronic properties and the inhibitionefficiency. In combination with the value of pK a , the protonic form of HBT in corrosive medium waspredicted.
机译：利用失重法，电化学方法和形貌表征，研究了一种新合成的苯并噻唑衍生物2-（2-羟基苯基）苯并噻唑（HBT）对低碳钢的抑制作用。结果表明，HBT表现出优异的腐蚀抑制效率，添加0.07 mM HBT可以达到约95％。电化学测试表明，HBT是一种混合型抑制剂。根据Langmuir吸附等温线，吸附过程的热力学和动力学参数与物理吸附机理相结合。此外，基于密度泛函理论的计算计算揭示了电子性质与抑制效率之间的关系。结合pK a的值，预测了腐蚀性介质中HBT的质子形式。

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