Layered Double Hydroxides as Catalytic Materials: Recent Development

Abstract

This report surveys the recent development of layered double hydroxides (LDHs) as catalytic materials, which have attracted considerable attention in the past decade. A major challenge in the rapidly growing field is to improve the functionalities of these materials. Therefore, this article is mainly focused on the lately reported design and synthesis strategies for LDH materials and their catalytic applications as actual catalysts, catalyst precursors and catalyst supports.

Glycerol Hydrogenolysis over Co Catalysts Derived from a Layered Double Hydroxide Precursor

“…Layered double hydroxides (LDHs), known as hydrotalcite-like materials, are interesting precursors for preparing well dispersed metal oxides or metal nanoparticles [17]. For instance, Cu-Zn-Al oxides, derived from the corresponding hydrotalcite precursor, proved to be highly active and selective in glycerol hydrogenolysis at 473 K, giving a glycerol conversion of 48.0% and a 1,2-propanediol (1,2-PDO) selectivity of 93.9% [18].…”

Visible light assisted Fenton-like degradation of Orange II on Ni 3 Fe/Fe 3 O 4 magnetic catalyst prepared from spent FeNi layered double hydroxide

“…In our recent work, the spent LDH was carbonized to obtain carbon/metal oxides complexes, which were further washed with acid to synthesize mesoporous carbon materials with large specific surface areas (>1400 m 2 /g) [8]. On the other hand, as there are many studies focusing on using the heated products of LDHs with special metals (i.e., the double metal oxides) as catalysts [9][10][11][12], it is worth investigating whether the obtained carbon/metal oxides complexes from spent LDHs can be used as catalysts as well. Furthermore, as the adsorbed organic contaminants can be carbonized into porous carbon or act as reductant under the heating process, the catalytic properties of the obtained products may be different from those double metal oxides made from LDHs.…”

Photocatalytic activity and stability of TiO2/ZnAl layered double hydroxide based coatings on mortar substrates

“…Layered double hydroxides are a class of synthetic two-dimensional nanostructured anionic clays, with advantageous textural, acid-base and redox properties, whose physical and chemical properties can be tailored during synthesis, enabling a wide range of LDH application [21][22][23][24][25]. LDHs have been intensively studied recently as photocatalysts or photocatalyst supports [26][27][28][29][30][31].…”