【作者】 陈萌； 邱于兵； 郭兴蓬； 陈振宇；

【Author】 Meng Chen;Yubing Qiu;Xingpeng Guo;Zhenyu Chen;Hubei Key Laboratory of Materials Chemistry and Service Failure,School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology;

【机构】 华中科技大学化学与化工学院材料化学与服役失效湖北省重点实验室；

【摘要】 金属有机骨架材料是一种新型的有机-无机杂化多孔材料,在金属腐蚀防护领域具有良好的应用前景。本文通过溶剂热法,以4,4-联吡啶作为连接体、三水合硝酸铜为中心金属离子配体,5-甲基噻吩-2-羧酸为有机配体反应合成了一种Cu-MOF。通过失重实验、动电位极化曲线和电化学阻抗谱等方法测试了Cu-MOF在HCl介质中对碳钢的缓蚀性能,并评价了Cu-MOF与硫脲、六亚甲基四胺之间的协同作用。实验结果表明,Cu-MOF可以显著降低碳钢在HCl介质中的腐蚀速率,当Cu-MOF浓度为50mg/L时缓蚀效率达到82.4%。Cu-MOF吸附在碳钢表面形成保护膜,从而抑制腐蚀。同时Cu-MOF与硫脲、六亚甲基四胺之间都有很好的协同作用。更多还原

【Abstract】 Metal organic framework material is a new type of organic-inorganic hybrid porous material,which has good application prospects in the field of corrosion protection.Cu-based metal–organic framework materials(Cu-MOF) were synthesized by reacting copper nitrate trihydrate with 5-methyl-2-thiophenecarboxylic acid in the presence of 4,4-bipyridyl via the solvothermal method.The corrosion inhibition performance of Cu-MOF on carbon steel in HCl medium was tested by weight loss experiment,potentiodynamic polarization curve and electrochemical impedance spectroscopy,and the synergistic effect between Cu-MOF,thiourea and hexamethylenetetramine was also evaluated.The experimental results show that Cu-MOF can significantly reduce the corrosion rate of carbon steel in HCl medium,and the corrosion inhibition efficiency reaches 82.4% when the Cu-MOF concentration is 50 mg/L.Cu-MOF can adsorb and form a protective film on the surface of carbon steel,thereby inhibiting corrosion.What’s more,Cu-MOF has a good synergistic effect with thiourea and hexamethylenetetramine.更多还原