An eco-friendly and effective corrosion inhibitor (N-CDs) was acquired by hydrothermal method in methacrylic acid and ethyl(methyl)amine precursors. Afterwards, the weight loss and electrochemistry measurement were chosen to appraise the corrosion inhibition behavior of as-prepared N-CDs for Q235 steel in Cl⁻ contained solutions. The change rules of EIS and Tafel data displayed that the as-prepared N-CDs revealed a high-efficiency protection for steel in all test environments. Meanwhile, the inhibition efficiency of steel reached up to 93.93 % (1 M HCl) and 88.96 % (3.5 wt% NaCl) at 200 mg/L of N-CDs. Furthermore, the N-CDs could form the adsorption film on steel surface to avoid the strong attack of Cl⁻. By analysis, the adsorption mechanism of as-prepared N-CDs on steel surface was physicochemical interaction, which strictly complied with the Langmuir adsorption model in both solutions.

通过水热法在甲基丙烯酸和乙基（甲基）胺前体中获得了一种生态友好，有效的缓蚀剂（N-CDs）。然后，将重量损失和电化学测量被选择用来鉴定为Q235钢在含Cl如此制备的N- CD的缓蚀行为^-包含的解决方案。EIS和Tafel数据的变化规则表明，所制备的N-CD在所有测试环境中均显示出对钢的高效保护。同时，在200 mg / L的N-CDs下，钢的抑制效率高达93.93％（1 M HCl）和88.96％（3.5 wt％NaCl）。此外，N型光盘可以形成于钢材表面的吸附膜，以避免Cl组成的攻强^-。通过分析，所制备的N-CDs在钢表面的吸附机理为物理化学相互作用，在两种溶液中均严格符合Langmuir吸附模型。