Abstract In view of the huge advantages of green corrosion inhibitors and in order to solve the problem of environmental pollution in the process of cleaning the zinc metal, this study is the evaluation of Bagassa guianensis extract on the corrosion behaviour of zinc in chloride medium (3%) was realised using electrochemical techniques (polarisation and AC impedance). This study demonstrated that the plant extract of Bagassa guianensis is a real as sustainable and green inhibitor for zinc corrosion in 3% NaCl with an inhibition efficiency of about 97% at 100 ppm. The electrochemical reactions were both impacted by the existence of the green inhibitor on the basis of the polarization curves and a change towards the positive potentials was measured in the presence of the extract in 3% NaCl. A CPEα, Q determined by fit and graphical methods plotted by synthetic data, was utilized. In order to determine the chemical compounds mainly responsible for the corrosion inhibition of the extract, electrochemical studies were carried out on each family contained in the plant extract. To comprehend the adsorption mechanism of total extract and flavonoids extract for zinc in the saline solution, XPS technique was accomplished. The obtained results indicated the establishment of protective film inclosing the Bagassa guianensis extract and the flavonoids compounds. The mechanism of corrosion protection of Bagassa guianensis extract was discussed with PDP, EIS, isothermal adsorption model and XPS technique.

中文翻译：

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巴加沙乙醇提取物用作 3% NaCl 中锌腐蚀的可持续环保抑制剂：电化学和 XPS 研究

摘要 鉴于绿色缓蚀剂的巨大优势，为解决金属锌清洗过程中的环境污染问题，本研究评价了贵阳竹叶提取物对锌在氯化物介质中的腐蚀行为（3 %）是使用电化学技术（极化和交流阻抗）实现的。这项研究表明，巴加沙的植物提取物是一种真正可持续的绿色锌腐蚀抑制剂，可在 3% NaCl 中抑制锌腐蚀，在 100 ppm 时抑制效率约为 97%。根据极化曲线，电化学反应都受到绿色抑制剂的存在的影响，并且在提取物存在于 3% NaCl 的情况下测量了向正电位的变化。CPEα，使用通过拟合和由合成数据绘制的图形方法确定的 Q。为了确定主要负责提取物腐蚀抑制的化合物，对植物提取物中包含的每个家族进行了电化学研究。为了解总提取物和黄酮提取物对盐水溶液中锌的吸附机理，采用XPS技术。所得结果表明建立了包封巴加沙提取物和黄酮类化合物的保护膜。采用PDP、EIS、等温吸附模型和XPS技术探讨了贵安巴加斯提取物的防腐机理。对植物提取物中包含的每个家族进行了电化学研究。为了解总提取物和黄酮提取物对盐水溶液中锌的吸附机理，采用XPS技术。得到的结果表明，保护膜的建立包含了巴加沙提取物和黄酮类化合物。采用PDP、EIS、等温吸附模型和XPS技术探讨了贵安巴加斯提取物的防腐机理。对植物提取物中包含的每个家族进行了电化学研究。为了解总提取物和黄酮提取物对盐水溶液中锌的吸附机理，采用XPS技术。得到的结果表明，保护膜的建立包含了巴加沙提取物和黄酮类化合物。采用PDP、EIS、等温吸附模型和XPS技术探讨了贵安巴加斯提取物的防腐机理。所得结果表明建立了包封巴加沙提取物和黄酮类化合物的保护膜。采用PDP、EIS、等温吸附模型和XPS技术探讨了贵安巴加斯提取物的防腐机理。得到的结果表明，保护膜的建立包含了巴加沙提取物和黄酮类化合物。采用PDP、EIS、等温吸附模型和XPS技术探讨了贵安巴加斯提取物的防腐机理。