A Comprehensive Review on Structure‐Engineered Layered Double Hydroxides for Efficient CO 2 Conversion

ABSTRACT The catalytic conversion of CO 2 has gained significant attention as a sustainable approach to mitigate the greenhouse effect while producing valuable chemicals. The development of efficient and environmentally benign catalysts is a key strategy for achieving effective CO 2 conversion. Among various catalytic materials, layered double hydroxides (LDHs) have emerged as a particularly promising class of anion‐exchangeable clay‐like materials, distinguished by their unique layered structure, tunable composition, and versatile functionality. This review systematically examines the fundamental principles governing LDHs’ exceptional catalytic performance in CO 2 conversion processes, with particular emphasis on: (1) the critical role of cation selection and interlayer anion engineering in tailoring active sites and reaction pathways. (2) advanced synthesis techniques for precise control over morphology and surface properties. and (3) mechanistic insights into LDH‐catalyzed reactions, including CO 2 reduction, hydrogenation, and dry reforming. The discussion extends to LDH‐derived materials often preserve and even improve upon the advantageous properties of parent LDHs. This review highlights innovative strategies to overcome limitations in catalytic activity, selectivity, and stability of LDHs. By bridging fundamental insights with practical applications, it aims to guide the rational design of next‐generation LDH catalysts for industrially viable and sustainable CO 2 utilization technologies.