Polyoxometalate Immobilized on Graphene via Click Reaction for Simultaneous Dismutation of H2O2 and Oxidation of Sulfur Mustard Simulant

‘Click reactions’ are widely used for the synthesis and modification of new materials due to their fascinating advantages (e.g., highly efficient and selective, mild reaction conditions, and lack of side reactions). Redox active metal-substituted polyoxotungstates (MSPs) were covalently immobilized on a graphene surface using a ‘click’ reaction between the azido group of K1.5Cs5.5[γ-SiW10O39Cu2(N3)2] (SiW10Cu2(N3)2) and the alkynyl groups on functionalized graphene. This novel strategy allowed for controllable formation of interfacial catalysts (SiW10Cu2/GO) with a single MSP molecule being loaded on the surface of graphene. This interfacing between a single polyoxometalate (POM) molecule and graphene results in several advantages combined with redox properties and higher thermal stability due to the POMs, electronic band structure of graphene, special hydrophobic environment, and single molecular dispersing sites. This SiW10Cu2/GO catalyst exhibited excellent stability and highly efficient reactivity or ...