Data from: Theoretical, thermodynamic and electrochemical analysis of Biotin drug as an impending corrosion inhibitor for mild steel in 15% HCl

The corrosion mitigation efficiency of Biotin drug for mild steel in 15% HCl was thoroughly investigated by weight loss and electrochemical methods. The surface morphology was studied by Contact angle, Scanning electrochemical microscopy (SECM), Atomic force microscope (AFM) and Scanning electron microscopy (SEM) methods. Quantum chemical calculation and Fukui analysis was done to correlate the experimental and theoretical data. The influence of concentration of inhibitor, immersion time, temperature, with activation energy, enthalpy and entropy has been reported. The mitigation efficiency of Biotin obtained by all methods was in good correlation with each other. Polarization studies revealed that Biotin acted as mixed inhibitor. The adsorption of Biotin was found to obey the Langmuir adsorption isotherm. Surface studies showed the hydrophobic nature of the steel with inhibitor and vindicated the formation of a film on the metal surface that reduced the corrosion rate.采用失重法与电化学方法，系统探究了生物素（Biotin）药物在15%盐酸溶液中对低碳钢的缓蚀效率。通过接触角测试、扫描电化学显微镜（SECM）、原子力显微镜（AFM）与扫描电子显微镜（SEM）等方法对表面形貌展开研究。开展量子化学计算与福井分析，以关联实验数据与理论结果。本研究报道了缓蚀剂浓度、浸泡时间与温度对缓蚀效率的影响，同时给出了对应的活化能、焓与熵参数。所有测试方法得到的生物素缓蚀效率均呈现良好的相关性。极化曲线研究表明，生物素属于混合型缓蚀剂。研究发现生物素的吸附行为符合朗缪尔吸附等温式（Langmuir adsorption isotherm）。表面分析结果显示，添加缓蚀剂后的钢表面呈现疏水特性，证实了金属表面形成了防护膜，从而降低了腐蚀速率。