Exploring the Capability of Synthesized PVP-Oxime for Corrosion Inhibition of a Mild Steel Surface in a 1 M H2SO4 Solution

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2020-01-01 DOI:10.4152/pea.202001043

Nisha Saini, Rajeev Kumar, Priti Pahuja, Reena Malik, Rinki Malik, S. Singhal, Suman Lata

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引用次数: 8

Abstract

Polyvinylpyrrolidone Oxime (PVPO) was synthesized a nd studied for mild steel (MS) corrosion inhibition in 1 M H2SO4, at different concentrations and temperatures. The corrosion inhibition efficiency was studied using w eight loss method, polarization technique, electrochemical impedance spectroscopy ( EIS), scanning electron microscopy (SEM) and quantum chemical calculations. The results from weight loss, potentiodynamic polarization and EIS showed that th e inhibition efficiency (I. E.) increased with gradual increments in the inhibitor c ncentration, and decreased at higher temperatures. The polarization study also re veal d that PVPO acted as a mixed type inhibitor, and Langmuir adsorption isotherm fi tted well for the adsorption behavior. The highest corrosion efficiency was found to be 88.39%, with a concentration of 1000 ppm, and a temperature of 303 K. The corrosion inhibition mechanism has been further proposed, including the support from the theoretical study. SEM images also verified the MS surface smoothening in PVPO presence, and, hence, it has shown to be a good corrosion inhibitor.

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探索合成pvp -肟在1 M H2SO4溶液中对低碳钢表面的缓蚀性能

合成了聚乙烯吡咯烷酮肟(PVPO)，研究了PVPO在1 M H2SO4中不同浓度和温度对低碳钢(MS)的缓蚀作用。采用w - 8损耗法、极化技术、电化学阻抗谱(EIS)、扫描电镜(SEM)和量子化学计算等方法对其缓蚀效果进行了研究。失重、动电位极化和EIS实验结果表明，缓蚀剂c的缓蚀效率随浓度的增加而增加，温度越高缓蚀效率越低。极化实验也表明PVPO作为混合型缓蚀剂，Langmuir吸附等温线符合其吸附行为。当腐蚀浓度为1000 ppm，温度为303 K时，腐蚀效率最高，为88.39%。进一步提出了缓蚀机理，包括理论研究的支持。SEM图像也证实了PVPO存在下的MS表面平滑，因此，PVPO已被证明是一种良好的缓蚀剂。

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来源期刊

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.