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| 植物源金银花叶提取物在盐酸溶液中对Q235钢的缓蚀性能研究 |
| Study on the Corrosion Inhibition Performance of Honeysuckle Leaf Extract in HCl Solution on Q235 Steel |
| 投稿时间：2026-05-18 修订日期：2026-06-15 |
| DOI： |
| 中文关键词: 缓蚀剂 金银花叶提取物 Q235钢 失重法 电化学 |
| 英文关键词:Glycine Glycine derivatives Corrosion inhibition Carbon steel |
| 基金项目:河北省高等学校科学技术(青年)项目(QN2022205);唐山师范学院校内项目(20265128051)Fund: Supported by the Youth Scientists of Hebei Higher Education ((QN2022205),the Scientific Research Foundation of Tangshan Normal College (20265128051) |
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| 中文摘要: |
| 以金银花叶为原料,采用超声波辅助提取法制备提取液,经加热回流浓缩、干燥处理后得到金银花叶固体提取物(HLE)。采用傅里叶变换红外光谱(FTIR)对HLE的化学结构进行分析,综合运用失重法、电化学方法、扫描电子显微镜(SEM)及接触角等多种方法,系统探究HLE在1.0 mol?L?1 HCl介质中对Q235钢的缓蚀效果及作用机制。结果表明 FTIR表征证实HLE中含有可参与缓蚀作用的活性官能团；在1.0 mol?L?1 HCl介质中,HLE能有效抑制Q235钢的腐蚀,缓蚀效率随提取物浓度的增大而显著提升,随温度的升高而降低；HLE在Q235钢表面的吸附为以物理吸附为主的混合吸附；电化学测试表明,HLE可同时抑制阴极析氢反应与阳极溶解反应；SEM观察和接触角测试进一步验证,提取物可在Q235钢表面形成一层致密的保护膜,从而发挥缓蚀作用。HLE是一种性能优良的环境友好型植物基缓蚀剂,在1.0 mol?L?1 HCl介质中对Q235钢具有优异的缓蚀效果,最高缓蚀效率可达93.86%,其通过物理-化学混合吸附在钢表面形成保护膜,显著抑制腐蚀反应进行。本研究不仅为碳钢在酸性介质中的腐蚀防护提供了新的绿色解决方案,还实现了金银花叶的高值化资源化利用,兼具环境效益与经济效益,具有良好的实际应用前景。 |
| 英文摘要: |
| In this study, the honeysuckle leaves were used as the research object. The extract was prepared by ultrasonic-assisted extraction and then concentrated by heating reflux. After drying, the solid extract of honeysuckle leaves was obtained. The extract was characterized by Fourier transform infrared spectroscopy (FTIR), and its corrosion inhibition effect on Q235 steel in 1.0 mol.L<sub><sup>-1</sup></sub> HCl medium was investigated by a combination of weight loss analysis, electrochemical tests, scanning electron microscopy (SEM) observation and contact angle measurement. The results showed that the honeysuckle leaf extract could effectively inhibit the corrosion of Q235 steel in 1.0 mol.L<sub><sup>-1</sup></sub> HCl medium. The inhibition efficiency decreased with the increase of temperature and increased with the increase of the extract concentration. The adsorption behavior of the extract conformed to the Langmuir adsorption model, indicating a mixed adsorption type dominated by physical adsorption. Electrochemical tests indicated that the honeysuckle leaf extract was a mixed-type inhibitor, which could simultaneously inhibit the cathodic hydrogen evolution and anodic dissolution processes. The formation of a protective film on the surface of carbon steel by the extract was further verified by SEM and contact angle tests, which achieved the corrosion inhibition effect. |
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