【作者】 曹娇娇； 邱于兵； 郭兴蓬； 陈振宇；

【Author】 Jiaojiao Cao;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】 金属有机框架(MOFs)材料是由金属离子和有机基团构成的复合材料,因其具有超疏水性、多结合位点和含有氮或硫原子的有机基团等特点,因此MOFs可用作缓蚀剂抑制金属的腐蚀。本文通过水热法合成一种新型Zn-MOF并将其用作铜缓蚀剂,通过电化学测试及SEM、XPS等形貌表征,探究了氯化钠溶液中Zn-MOF对铜的缓蚀行为。实验结果表明:Zn-MOF是一种优良的混合型缓蚀剂,其通过在铜表面形成保护膜阻隔腐蚀介质与金属接触,从而抑制了金属的腐蚀。Zn-MOF在浓度为45 mg/L时,缓蚀效率最高,达到87.2%,此外,Zn-MOF的缓蚀性能受到电场的影响,电场可以破坏Zn-MOF的结构,从而使其缓蚀性能下降,同时随着电场强度的增加Zn-MOF的缓蚀性能显著下降。更多还原

【Abstract】 Metal-organic frameworks(MOFs) are compound materials whose frameworks incorporate metal ions and various organic ligands,and have potential to be inhibitors because of their super hydrophobicity,multiple binding sites and organic groups containing nitrogen or sulfur atoms.In this paper,a novel Zn-MOF was synthesized by hydrothermal method and employed as a copper inhibitor.The inhibition performance of Zn-MOF on copper corrosion in sodium chloride solution was studied via using the SEM,XPS combined with electrochemical methods.Results showed that the Zn-MOF was an excellent mixture inhibitor,and formed protective films on the copper surface,which blocked the aggressive ions and thus protected copper from corrosion.The inhibition efficiency increased with increasing the concentration of Zn-MOF,which reached 87.2% at 45 mg/L Zn-MOF.The inhibition behavior of Zn-MOF was affected by electric field.The inhibition efficiency of Zn-MOF decreased significantly attributed to the damage of Zn-MOF’s structure under electric field condition,and simultaneously the inhibition efficiency of Zn-MOF decreased with the increasing of electric field intensity.更多还原