Engineering polyoxometalate-intercalated layered double hydroxides for catalytic applications

Abstract

Polyoxometalates-intercalated layered double hydroxides (POMs–LDHs) nanocomposites have received considerable attention recently owing to the intrinsic properties of POMs and LDHs and significant synergistic effects during the catalytic process.

Confined Growth of NiAl-Layered Double Hydroxide Nanoparticles Within Alginate Gel: Influence on Electrochemical Properties

“…Although they are rarely observed in the natural state, this family of materials can be easily prepared in the laboratory by different methods such as coprecipitation using NaOH, urea hydrolysis, sol-gel, and epoxide methods (Tokudome et al, 2016;Prevot and Tokudome, 2017;Tichit et al, 2019). Based on fine control of the synthesis conditions, matrices with a tunable chemical composition are prepared by varying the nature of M 2+ and M 3+ , their ratio and the type of anion intercalated which can range from simple inorganic anions, polyoxometalates (Liu et al, 2020) and organic or even bioorganic anions bearing carboxylate, sulfonate, or phosphonate groups (Taviot-Guého et al, 2018). Thanks to their unique properties, LDH are emerging as an important class of layered materials with potential applications as adsorbents in water treatment (Zhang R. et al, 2020), nuclear waste storage materials (Gu et al, 2018), electro-photo-catalysts for organic molecule conversion (Fan et al, 2014;Xu and Wei, 2018;Cai et al, 2019;Liu et al, 2020) or pollutant degradation (Zhang G. et al, 2020), energy storage and conversion (Patel et al, 2018;Cai et al, 2019;Xie et al, 2019;Yang et al, 2019), electrode materials for detection (Mousty and Prévot, 2013) and biocompatible inorganic matrices for drug delivery system development (Choi et al, 2018a,b) or biomedical imaging (Jin and Park, 2019).…”

Zn-Al layered double hydroxide-based nanocomposite functionalized with an octahedral molybdenum cluster exhibiting prominent photoactive and oxidation properties

“…Most of the cases depend on the catalytic possibility of the functional groups existing between the ionic metal hydroxide layers. Particularly, single-atom Auintercalated NiFe LDH, Ce-doped MgAl LDH functionalized Au nanoparticles, or polyoxometalate-intercalated LDH have revealed the optimal achievements for catalytic applications [22][23][24].…”

Hierarchical CuCo2S4 Nanoflake Arrays Grown on Carbon Cloth: A Remarkable Bifunctional Electrocatalyst for Overall Water Splitting

“…[12][13][14][15][16] However, it is not advisable to simply develop HER or OER electrocatalyst and ignore the development of bifunctional catalysts. [17][18] From practical application, fabricating bifunctional electrode materials combining both the remarkable HER and OER performance has become the promise approach to resolve the issues in this field. [19][20][21][22] Among these electrocatalysts, in general, spinel-like materials have ideal formula (AB 2 O 4 or AB 2 S 4 ) and act as hopeful materials in electrochemical applications.…”

“…Therefore, developing earth‐abundant and low‐cost transition metal compounds (oxides, sulfides, carbides, and phosphides) has become urgent [12–16] . However, it is not advisable to simply develop HER or OER electrocatalyst and ignore the development of bifunctional catalysts [17–18] . From practical application, fabricating bifunctional electrode materials combining both the remarkable HER and OER performance has become the promise approach to resolve the issues in this field [19–22] …”