The corrosion of metals is still a huge challenge for various industries, and the pursuit of effective treatments ensures environmental sustainability. In this study, we utilized Chiquita banana sap-water extract (BSWE) to prevent mild steel from electrochemical corrosion in a 0.1 M HCl at room temperature. Corrosion resistance was assessed using various electrochemical methodologies, combining with surface characterization techniques. The results showed a high level of effectiveness when the corrosion current density decreased from 3292.67 μA cm⁻² (for the sample immerged in the blank solution) to 187.33 μA cm⁻² after 24 hours of immersion in the solution containing BSWE at a 2000 ppm concentration, equivalent to corrosion efficiency of 94.32%. Surface characterization revealed diminished corrosion on the inhibited steel surface due to the formation of a protective layer. X-ray photoelectron spectroscopy results demonstrated the presence of BSWE ingredients combining with iron oxides and hydroxides to form a smooth protective layer. Furthermore, theoretical calculations also indicated that the addition of BSWE can reduce steel surface damage when exposing to corrosive environment. The inhibitor based on banana sap extract can be referred to as a sustainable protective coating since it is biodegradable, abundantly available in banana plants and free of other harmful substances.

中文翻译：

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用奇基塔香蕉汁提取物增强低碳钢在盐酸中的耐腐蚀性

金属腐蚀仍然是各行业面临的巨大挑战，追求有效的处理方法可确保环境的可持续性。在这项研究中，我们利用奇基塔香蕉汁水提取物 (BSWE) 来防止低碳钢在室温下的 0.1 M HCl 中发生电化学腐蚀。使用各种电化学方法并结合表面表征技术来评估耐腐蚀性。结果表明，在含有 2000 ppm BSWE 的溶液中浸泡 24 小时后，腐蚀电流密度从 3292.67 μA cm ^-2（浸入空白溶液中的样品）降至 187.33 μA cm ^-2，具有很高的有效性。浓度，相当于腐蚀效率为94.32%。表面特征表明，由于保护层的形成，受抑制的钢表面的腐蚀减少。 X 射线光电子能谱结果表明 BSWE 成分与铁氧化物和氢氧化物结合形成光滑的保护层。此外，理论计算还表明，BSWE的添加可以减少暴露于腐蚀环境时钢材表面的损伤。基于香蕉汁提取物的抑制剂可被称为可持续的保护涂层，因为它可生物降解，在香蕉植物中含量丰富且不含其他有害物质。