Recent advances in the synthesis and environmental catalytic applications of layered double hydroxides-based materials for degradation of emerging pollutants through advanced oxidation processes

Layered double hydroxides (LDHs), one of the most important 2D heterostructure materials, have provided massive improvements for various applications in many fields. Especially, their application in water treatment as efficient catalysts owing to their unique features such as tunable structure, excellent thermal stability and regeneration performances. LDHs represent an eco-friendly alternative to conventional catalysts especially for the degradation of noxious emerging contaminants in aqueous solution. They have the ability to host anions in their interlayer structure and the particularity of having a memory effect which facilitates the phenomena of regeneration. Thus, this paper discusses the available knowledge about the synthesis of LDHs and their derivative catalysts, and the factors affecting in AOPs for the removal of emerging compounds. Incontestably, LDHs and LDH-based materials possess an exceptional flexible structure with adsorption ability and catalytic activity, which allows them to be extensively employed in the environmental remediation of emerging contaminants in water.