Experimental and theoretical investigations on synergistic effect of surfactants as corrosion inhibitor on steel in acid medium

IF 2.7 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Surface Innovations Pub Date : 2023-04-14 DOI:10.1680/jsuin.22.01091

Jia-nan Fan, Heng Yang, Hanwen Zhang, Peng Han, Haobo Yu, Lei Zhang

引用次数: 0

Abstract

The inhibition performances of inhibitor C8TAB-MP (a mixture of Octyltrimethylammonium bromide (C8TAB) and 4-mercaptopyridine (4MP)), C8TAB and 4MP toward A3 steel in 0.5 M hydrochloric acid solution were studied at 25 °C. The studied inhibitors worked in a hybrid form, mainly controlling the cathodic reaction. Their adsorption follows the Langmuir isotherm, and the compositional combination is superior to the sum of their individual properties. The highest inhibition efficiency of C8TAB-MP was 99.4% at a concentration of 200 mg L−1. Surface morphologies of samples were obtained from AFM tests. Synergistic effect between C8TAB and 4MP is due to the C8TAB molecules donating electrons and the 4MP molecules accepting electrons.

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表面活性剂在酸性介质中对钢缓蚀剂协同作用的实验与理论研究

抑制剂C8TAB-MP（辛基三甲基溴化铵（C8TAB）和4-巯基吡啶（4MP）的混合物）、C8TAB和4MP在0.5 M盐酸溶液在25°C下进行研究。所研究的抑制剂以混合形式工作，主要控制阴极反应。它们的吸附遵循朗缪尔等温线，并且组成组合优于它们各自性质的总和。当浓度为200时，C8TAB-MP的最高抑制率为99.4% mg L−1。通过AFM测试获得了样品的表面形貌。C8TAB和4MP之间的协同效应是由于C8TAB分子提供电子而4MP分子接受电子。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface Innovations CHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

5.80

自引率

22.90%

发文量

期刊介绍： The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace. Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.