Layered double hydroxide-based nanocomposites for wastewater treatment

Abstract

Layered double hydroxides (LDHs) have become an important class of two-dimensional nanocomposites having prospects in the field of wastewater treatment methods, especially adsorption and photocatalysis, wherein great importance has been paid to adjustable structure, facile exchangeability of its anions with target ions and holding of relevant molecules in between the interlayer space. Recent developments in the fabrication of LDHs-based adsorbents and photocatalysts have been adapted to improve their functionality properties driven by intercalation and deposition on support materials (carbonaceous and polymeric samples). Herein, various LDH composites have been discussed, emphasizing their specific improvements in their characteristics related to enhanced removal activity, selectivity, and stability in the removal process. This review presents promising LDHs-based structures which can be utilized for efficiently solving contaminant pollution in aqueous environments. © 2025 Elsevier B.V., All rights reserved.