Layered double hydroxides (LDHs) for coating applications

Layered double hydroxides (LDHs) are an emerging technology that is used as a filler in coatings due to its structural and compositional flexibility. LDHs are layered compounds composed of positive metal hydroxides and negatively charged interlayer anions. We have discussed the structures and characteristics of LDHs in this review study, as well as many processes, such as the barrier mechanism, self-healing corrosion inhibitor method, and superhydrophobic mechanism, that demonstrate how LDHs operate in anticorrosion coatings. Additionally, how the use of LDH imparts flame-retardant qualities to the coatings is covered here, along with their respective processes. LDH coatings are suitable for packaging, biomedical, water treatment, and conductive applications alone or in combination with other materials.