金缕梅在酸性介质中作为铝的绿色缓蚀剂

IF 1.1 Q4 ELECTROCHEMISTRY

Portugaliae Electrochimica Acta Pub Date : 2021-01-01 DOI:10.4152/pea.2021390304

Bashir, V. Sharma, P. Dhaundiyal, N. Shafi, Ashok Kumar

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引用次数: 4

摘要

研究了金裸子在酸性介质中对铝的缓蚀性能。实验技术包括动电位极化研究、电化学研究、量子化学计算和失重法。结果表明，在酸性介质中，Gymneme Sylvestre是一种潜在的铝缓蚀剂，当其浓度为800 ppm时，缓蚀率为82%。并计算了不同的热力学参数，包括活化能、吉布斯自由能和焓。结果表明，金缕梅分子在铝片表面的吸附符合Langmuir吸附等温线。计算了金缕梅主要成分的量子化学参数。

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Gymneme Sylvestre as a Green Corrosion Inhibitor for Aluminum in an Acidic Medium

The corrosion inhibition property of Gymneme Sylvestre on aluminum in an acidic medium has been investigated. The experimental techniques include potentiodynamic polarization studies, electrochemical studies, quantum chemical calculation and weight loss method. The results revealed that Gymneme Sylvestre acts as a potential corrosion inhibitor of aluminum in an acidic medium, showing 82% inhibition efficiency at 800 ppm concentration of it. Furthermore, the different thermodynamic parameters, including activation energy, Gibbs free energy and enthalpy have been calculated. The results showed that adsorption of the Gymneme Sylvestre molecule onto the aluminum coupon surface obeys Langmuir adsorption isotherm. The quantum chemical parameters were also calculated for major constituents of Gymneme Sylvestre.

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来源期刊

Portugaliae Electrochimica Acta ELECTROCHEMISTRY-

CiteScore

2.30

自引率

16.70%

发文量

期刊介绍： Portugaliae Electrochimica Acta is a bi-monthly Journal published by the Portuguese Electrochemical Society since 1983. Portugaliae Electrochimica Acta publishes original papers, brief communications, reviews and letters concerned with every aspect of theory and practice of electrochemistry, as well as articles in which topics on history, science policy, education, etc. in the electrochemical field (teaching or research) may be discussed.