Layered Double Hydroxide‐based Nanomaterials as Highly Efficient Catalysts and Adsorbents

Abstract

Layered double hydroxides (LDHs) are a class of anion clays consisting of brucite-like host layers and interlayer anions, which have attracted increasing interest in the fields of catalysis/adsorption. By virtue of the versatility in composition, morphology, and architecture of LDH materials, as well as their unique structural properties (intercalation, topological transformation, and self-assembly with other functional materials), LDHs display great potential in the design and fabrication of nanomaterials applied in photocatalysis, heterogeneous catalysis, and adsorption/separation processes. Taking advantage of the structural merits and various control synthesis strategies of LDHs, the active center structure (e.g., crystal facets, defects, geometric and electronic states, etc.) and macro-nano morphology can be facilely manipulated for specific catalytic/adsorbent processes with largely enhanced performances. In this review, the latest advancements in the design and preparation of LDH-based functional nanomaterials for sustainable development in catalysis and adsorption are summarized.

Graphene-oxide-supported CuAl and CoAl layered double hydroxides as enhanced catalysts for carbon-carbon coupling via Ullmann reaction

“…LDH-based materials display great potential as heterogeneous catalyst due to their versatility given by the possibility of incorporation of various catalytically-active transition metal species (e.g., Cu, Co, Fe, Ni, V, Rh), the strong alkaline nature and an easy separation of the products [1][2][3]. In particular, LDHs have been intensively investigated in recent years as catalysts and catalyst supports [4,5] in many aspects, such as organic synthesis, (photo) degradation of organic wastes, greenhouse gas control emission and H2 production [6][7][8][9][10][11][12][13].…”

Template growth of porous graphene microspheres on layered double oxide catalysts and their applications in lithium–sulfur batteries

“…LDHs are a class of ionic lamellar compounds composed of positively charged brucite-like layers with interlayered charge-balancing anions and solvent molecules [29][30][31]. Spray-dried LDH microspheres showed a diameter of ca.…”

Silylated layered double hydroxide nanosheets prepared by a large-scale synthesis method as hosts for intercalation of metal complexes

“…The net positive charge resulting from this substitution is counterbalanced by exchangeable anions (i.e., interlayer anions) [10][11][12]. LDHs are composed of twodimensional positively charged host lattices with excellent anion exchange capacity.…”