Layered Double Hydroxide Materials in Photocatalysis

Layered double hydroxide (LDH)-based photocatalysts have attracted great attention in the fields of environment and energy (e.g., degradation of pollutants, water splitting for solar fuel production), owing to their unique intercalation structure with highly dispersed metal cations and exchangeable anions, large specific surface areas, and remarkable adsorption capacities. This chapter aims to review and summarize the recent advances in the synthesis and photocatalytic applications of LDH-based materials. Typically, several important strategies have been developed for the fabrication of LDH-based photocatalysts by tuning the composition of the host layers, intercalating guest sensitizers, and constructing nanocomposites. The obtained photocatalysts exhibit excellent performances in the fields of pollutant degradation, water splitting, and reduction of CO₂ into carbon sources. The fabrication and application of LDH-based photocatalysts represent a promising direction in the development of LDH-based multifunctional materials, which will contribute to the progress of chemistry and material science.