Layered double hydroxides (LDHs) are an emergent class of biocompatible inorganic lamellar nanomaterials that have attracted significant research interest owing to their high surface-to-volume ratio, the capability to accumulate specific molecules, and the timely release to targets. Their unique properties have been employed for applications in organic catalysis, photocatalysis, sensors, drug delivery, and cell biology. Given the widespread contemporary interest in these topics, time-to-time it urges to review the recent progresses. This review aims to summarize the most recent cutting-edge reports appearing in the last years. It firstly focuses on the application of LDHs as catalysts in relevant chemical reactions and as photocatalysts for organic molecule degradation, water splitting reaction, CO2 conversion, and reduction. Subsequently, the emerging role of these materials in biological applications is discussed, specifically focusing on their use as biosensors, DNA, RNA, and drug delivery, finally elucidating their suitability as contrast agents and for cellular differentiation. Concluding remarks and future prospects deal with future applications of LDHs, encouraging researches in better understanding the fundamental mechanisms involved in catalytic and photocatalytic processes, and the molecular pathways that are activated by the interaction of LDHs with cells in terms of both uptake mechanisms and nanotoxicology effects.

Layered Double Hydroxides: A Toolbox for Chemistry and Biology

Enzyme immobilization onto the nanomaterials: Application in enzyme stability and prodrug-activated cancer therapy

A protective superhydrophobic Mg–Zn–Al LDH film on Surface-Alloyed Magnesium

3D flower-like NiCo-LDH composites for a high-performance NO2 gas sensor at room temperature

Enhance fluorescence study of grating structure based on three kinds of optical disks

Growth AlxGa1−xN films on Si substrates by magnetron sputtering and high ammoniated two-step method

The invention provides a preparation method for a petal-shaped film Zn-Al type gas sensitive material. The prepared gas sensitive material is a uniform film composed of multiple nano-sheets in a staggered mode, the nano-sheets are smooth and flat and dozens of nanometers thick, and the diameter of each nano-sheet is about one micrometer; a nano-petal-shaped structure is formed on the surface of each nano-sheet layer, the specific surface area is large, the gas sensitive material has the gas sensitive characteristic to ethyl alcohol, methyl alcohol and acetone, and compared with a pure ZnO film material, the stability is higher; and the prepared film gas sensitive material directly grows on a substrate, and thus a prepared sample is higher in mechanical strength and not prone to falling off.

Preparation method for petal-shaped film Zn-Al type gas sensitive material

Enhanced photoluminescence emission and surface fluorescence response of morphology controllable nano porous anodize alumina Zn-Al LDH film

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Growth AlxGa1−xN films on Si substrates by magnetron sputtering and high ammoniated two-step method

Preparation method for petal-shaped film Zn-Al type gas sensitive material

Enhanced photoluminescence emission and surface fluorescence response of morphology controllable nano porous anodize alumina Zn-Al LDH film