Abstract

The medicinal compound antifebrin was prepared in the laboratory via one stage (green method) by using aniline, glacial acetic acid, and zinc dust. The investigation was aimed at ascertain a possibility of utilizing the medicinal compound to originate a corrosion inhibitor for Al in a 3 M HCl solution. In the present article, the usefulness of antifebrin to inhibit the Al corrosion in 3 M HCl solution was examined by the Tafel plot, AC impedance spectroscopy, gasometric and quantum chemical techniques. The Tafel plot results show that concentration of antifebrin has a positive effect on the inhibition efficiency. The Tafel plot also reveals that this medicinal compound inhibits the acidic corrosion of aluminum by a mixed mode. Impedance spectroscopy results show that corrosion resistance of Al in a 3 M hydrochloric acid was improved by antifebrin. For better understanding the relationship between the antifebrin molecular structure and inhibitory ability, quantum calculations (by using Argus Lab = latest version) were performed. Surface studies were carried out by scanning electron microscopy. The Langmuir plot confirms the chemical adsorption mechanism on the Al surface in a 3 M HCl solution in the presence of antifebrin.

中文翻译：

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通过单阶段绿色方法制备的抗纤维蛋白药物可作为3 M HCl介质中Al的可持续腐蚀抑制剂：来自电化学，气体计量和量子化学研究的见解

摘要

在实验室中，通过使用苯胺，冰醋酸和锌粉经过一个阶段（绿色方法）制备了药用复合抗纤维蛋白。该研究旨在确定利用该药用化合物在3 M HCl溶液中引发Al腐蚀抑制剂的可能性。在本文中，通过Tafel图，交流阻抗谱，气相色谱和量子化学技术研究了抗纤维蛋白抑制3 M HCl溶液中的Al腐蚀的有效性。Tafel图结果表明，抗纤维蛋白的浓度对抑制效率具有积极作用。Tafel图还表明该药物化合物通过混合模式抑制了铝的酸性腐蚀。阻抗谱结果表明，抗铁蛋白可提高3 M盐酸中Al的耐腐蚀性。为了更好地了解抗纤维蛋白分子结构与抑制能力之间的关系，进行了量子计算（使用Argus Lab =最新版本）。表面研究通过扫描电子显微镜进行。朗格缪尔图证实了在存在抗纤维蛋白的情况下，在3M HCl溶液中Al表面的化学吸附机理。