Layered double hydroxides and their composites as high-performance photocatalysts for CO2 reduction

Abstract

Over the past decade, layered double hydroxides (LDHs) have attracted much attention due to their many advantages in the field of CO₂ photoreduction, such as superior CO₂ adsorption and tunable photoelectrochemical properties. Moreover, their low price, simple production process and high yield make it easier to realize mass production. This review presents a panorama of the latest developments of LDH-based photocatalysts for CO₂ reduction. It starts with the basic principle of photocatalytic CO₂ reduction. After that, the fundamentals of LDHs are also illustrated. Later, a series of representative LDH-based photocatalysts (mainly including LDH-based derivatives and LDH composites) for CO₂ reduction are exemplified. At the end, this review also offers some new views into the major challenges, opportunities, and heuristic perspectives for future research in this emerging field. There is no doubt that the advanced LDH-based materials can act as highly efficient photocatalysts to achieve new breakthroughs in CO₂ photoreduction.