Heterogenization of [Ru4(μ-O)4(μ-OH)2(H2O)4(γ-SiW10O36)2]10− (Ru4POM) on Nitrogen-doped Carbon Nanohorns (N-CNHs)

Ru4POM is an outstanding inorganic molecular catalyst because of its activity, stability and robustness towards photo- and electro-chemical oxidation reactions. For these reasons it is considered a mimetic of the oxygen evolving complex (OEC) of the natural enzyme Photosystem II. To engineer nanostructured electrodes, Ru4POM needs to be immobilized on a conductive support. Our groups reported the immobilization of Ru4POM on the surface of amino functionalized CNTs and graphene. Co4POMs were recently anchored on linker-free N-CNTs, improving the charge-electron transfer between catalyst and support. Here, we achieved the heterogenization of Ru4POM on linker-free dahlia-like N-CNHs by means of complementary Coulombian interactions.