Cao Yanhui, Zheng Dajiang, Zhang Fan, Pan Jinshan, Lin Changjian, Wang Jingjing, Huang Congshu
National Key Laboratory of Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Xiamen 361101, China.
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Molecules. 2025 Aug 25;30(17):3480. doi: 10.3390/molecules30173480.
In order to enhance the corrosion resistance of aluminum alloys, mussel adhesive protein (MAP) was intercalated into layered double hydroxide (LDH) grown onto an Al substrate. The results from X-ray diffraction (XRD), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and energy dispersive spectroscopy (EDS) measurements all confirmed that part of the positively charged MAP can be successfully intercalated into the LDH based on the strong second reactivity. MAP is able to form complexes with the metal cations and hydroxides, leading to less positive charges on the hydroxide layers of the LDH. The intercalation results in the removal of the previously intercalated anions from the interlayer space of the LDH, which maintains the charge balance and lamellar structure. The MAP intercalated LDH film can provide effective corrosion protection to the Al substrate.
为了提高铝合金的耐腐蚀性，将贻贝粘附蛋白（MAP）插入生长在铝基底上的层状双氢氧化物（LDH）中。X射线衍射（XRD）、衰减全反射傅里叶变换红外光谱（ATR-FTIR）和能量色散光谱（EDS）测量结果均证实，基于强二级反应性，部分带正电荷的MAP能够成功插入LDH中。MAP能够与金属阳离子和氢氧化物形成络合物，导致LDH氢氧化物层上的正电荷减少。这种插层作用导致先前插层的阴离子从LDH的层间空间中去除，从而保持电荷平衡和层状结构。MAP插层的LDH膜可为铝基底提供有效的腐蚀防护。
