绿色缓蚀剂麝香精油在1 M HCl中对低碳钢的吸附性能及电化学行为

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2022-01-01 DOI:10.4152/pea.2022400101
M. Ouknin, P. Ponthiaux, J. Costa, L. Majidi
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引用次数: 2

摘要

采用失重测量、表面分析(SEM-EDX、三维轮廓仪和FT-IR)、动电位极化和电化学阻抗谱(EIS)等方法研究了麝香精油(TW)对1 M HCl中低碳钢的缓蚀作用。在1 M HCl介质中浸泡30min、60min和90min,用极化电位曲线评价TW油的防腐效果。重量分析结果表明,在3 g/L时,TW油的缓蚀效率为81.42%。极化测量表明,TW是一种混合型缓蚀剂,其阴极和阳极电流密度显著降低。电化学阻抗谱测试表明,随着TW油浓度的增加,电荷转移阻力增大。通过SEM-EDX和三维轮廓测量,可以清楚地看到,与暴露在没有精油的酸性介质中的金属相比,在TW油的存在下,金属表面有了显著改善。从TW的性质和得到的结果可以看出,该油是一种新的天然物质,可以用于抗腐蚀性溶液中的材料腐蚀。
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Adsorption Properties and Electrochemical Behavior of Thymus Willdenowii Boiss and Reut Essential Oil as a Green Inhibitor for Mild Steel Corrosion in 1 M HCl
The inhibition effect of Thymus willdenowii Boiss & Reut essential oil (TW) on the mild steel corrosion in 1 M HCl has been investigated using weight loss measurements, surface analysis (SEM-EDX, three-dimensional profilometry and FT-IR), potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The TW oil anticorrosion effect was evaluated using polarization potentiodynamic curves obtained after 30, 60 and 90 min of immersion in a 1 M HCl medium. Gravimetric results have shown that TW oil has a significant inhibition efficiency value of 81.42%, which was attained at 3 g/L. The polarization measurements have shown that TW is a mixed type inhibitor, with a significant reduction in cathodic and anodic current densities. Measurements by electrochemical impedance spectroscopy revealed that resistance to the charge transfer has increased with higher TW oil concentrations. From the use of SEM-EDX and three-dimensional profilometry, it is clear that the metal surface has remarkably improved in the TW oil presence, compared to the one exposed to the acid medium without essential oil. From the TW proprieties and the obtained results, it can be concluded that this oil is a new natural substance that can be used against material corrosion in aggressive solutions.
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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