以锌铝层状双金属氢氧化物(LDHs)为主体, 天冬氨酸(aspartic acid, Asp)为客体, 采用离子交换法合成了Asp-LDHs杂化物. 粉末X射线衍射(PXRD)和傅里叶变换红外光谱(FTIR)分析结果表明, 天冬氨酸成功插入LDHs层间, 形成杂化物. 用胶体沉积技术将杂化物沉积在铜基底上, 电化学阻抗谱(EIS)和极化曲线研究表明, Asp-LDHs杂化物薄膜对铜具有良好的缓蚀作用.。
Aspartic acids (Asp) were intercalated into ZnAl layered double hydroxides(ZnAl-LDHs) by ion exchange method. The products were characterized by powder X-ray diffration (PXRD) and fourier transform infrared spectroscopy (FTIR). The results showed that Asp-LDHs nanohybrids were formed by the intercalation of the aspartic acid into the ZnAl layered double hydroxides. The nanohybrids were deposited on copper by colloid deposition method, and the quality and protection performance of the resulted film against corrosion were evaluated by electrochemical impedance spectroscopy (EIS) and polarization curves. All the results demonstrated that aspartic acid intercalated Zn-Al LDHs could inhibit the corrosion of copper effectively.
参考文献
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