The combination of LDHs nanocontainer and organic inhibitor demonstrates a great prospect in the field of corrosion protection. Whereas the traditional ion exchange method has a low efficiency owing to the small space and the firm force between the LDHs laminates. A high-efficiency approach of intercalating organic inhibitor into the LDHs is delivered in this work. The MgAl-LDHs loaded with 5-aminoindazole (AIA) were synthesized by separating the layered structures of hydrotalcites into single-layer nanosheets and then restructuring the exfoliated nanosheets with organic inhibitor. The as-synthesized LDHs-AIA^- displayed a controlled release behavior and excellent anti-corrosion performance on the copper in 3.5 wt.% NaCl solution, which were characterized by UV-vis spectra and electrochemical tests. Furthermore, a series of structure and morphology tests involving SEM, TEM, XRD, FTIR, XPS and TGA were also used for further analysis the LDHs. And the analysis of corrosion products and the anti-corrosion mechanism were carried out by SEM, XRD tests. The theoretical calculations concerning the adsorption of corrosion inhibitors on the copper surface were also investigated. It can be concluded that the inhibitor-loaded LDHs have the ability to adjustably release the corrosion inhibitor in corrosive medium, thereafter the corrosion inhibitor can adsorb onto the active sites of copper surface to prevent corrosion.

LDHs纳米容器与有机抑制剂的结合在防腐领域具有广阔的前景。传统的离子交换方法由于LDHs层压板之间的空间小和作用力强而效率低。这项工作提供了将有机抑制剂插入LDH的高效方法。通过将水滑石的层状结构分离成单层纳米片，然后用有机抑制剂重组剥离的纳米片，合成了负载有5-氨基吲唑（AIA）的MgAl-LDH。所合成的水滑石，AIA ^-在3.5％（重量）NaCl溶液中对铜表现出可控的释放性能和优异的耐腐蚀性能，这通过紫外可见光谱和电化学测试进行了表征。此外，还使用了包括SEM，TEM，XRD，FTIR，XPS和TGA在内的一系列结构和形态测试来进一步分析LDH。并通过SEM，XRD测试对腐蚀产物及防腐蚀机理进行了分析。还研究了有关腐蚀抑制剂在铜表面上吸附的理论计算。可以得出结论，负载缓蚀剂的LDH具有在腐蚀介质中调节释放缓蚀剂的能力，此后缓蚀剂可以吸附到铜表面的活性部位上以防止腐蚀。