Non-covalent polyhedral oligomeric silsesquioxane-polyoxometalates as inorganic–organic–inorganic hybrid materials for visible-light photocatalytic splitting of water

Abstract

Hydrophilic to hydrophobic conversion of polyoxometalate by integration of POSS-NH2via non-covalent interactions for sustainable photocatalytic hydrogen production reactions.

Highly Efficient Visible‐Light‐Induced Photocatalytic Hydrogen Production via Water Splitting using FeCl3‐Based Ionic Liquids as Homogeneous Photocatalysts

“…In this regard, since the homogeneous photocatalysts suffered from a difficulty in the recovery and recycling processes, [70] many research attempts investigated the heterogenization technique where the homogenous photocatalysts were immobilized on different solid supports and thus can act as heterogeneous photocatalysts, and therefore the separation and reusability tasks could be more facilitated. [71][72][73] One of the main characteristic features of ILs is their ease of recovery and recycling because of their high thermal stability and low vapor pressure. [74] Simple vacuum drying may be a sufficient method to recover the IL, particularly if the components to be separated have lower boiling points than the IL.…”

The Role of Polyhedral Oligomeric Silsesquioxanes in Optical Applications

“…For example, in an attempt to obtain heterogeneous water‐splitting photocatalysts, Prabu et al combined a cationic monoamino POSS cage with a series of anionic electron acceptor polyoxometalates ([PW 12 O 40 ], [PMo 12 O 40 ] and [PMo 10 V 2 O 40 ]) through electrostatic interactions. [ 90 ] The incorporation of the hydrophobic POSS created water‐stable heterogeneous photocatalysts, which also benefitted from enhanced thermal, chemical, and mechanical properties. Moreover, the generation of H 2 (from the splitting of water) was promoted due to a red shift in the absorption of the photocatalyst and an enhanced charge carrier separation, which arose due to the immobilization of the polyoxometalate anion.…”

Polyoxometalate‐Based Compounds for Photo‐ and Electrocatalytic Applications

“…As a result, there has been a growing interest in diversifying the photochemical properties of POM molecules by creating hybrid POM‐ organic/‐metal‐organic architectures, and thus investigating the effect on modulating photocatalytic HER performance. In recent years, encapsulation of catalytically active POMs in different kinds of porous metal‐organic/ inorganic‐organic‐inorganic/supramolecular organic/polymeric frameworks (MOFs) which are typically based on electrostatic interactions has been a leading concept for performing enhanced photocatalytic HER [5b,f–h, 12] . Lin et al.…”