Abstract
Bifunctionalized hexagonal mesoporous silicas, CoPh-HMS, were designed andsuccessfully synthesized by a one-step co-condensation route at ambient temperature.This new material possesses the typical wormhole structure of HMS material.Co2+ ions were incorporated into the frameworks in tetrahedral coordinationalong with phenyl groups immobilized on the surface, confirmed by acareful spectroscopic (Fourier transform infrared, ultraviolet–visible and29Si magic-angle spinning nuclear magnetic resonance) study. It was used in the liquid-phaseselective oxidation of cyclohexane with molecular oxygen under solvent-free conditions, andshowed excellent performance. The results indicate the potential for intentional design ofthe catalytic environment at a nanometre level with the combination of transitionmetal incorporation and surface organofunctionalization for mesoporous siliceousmaterials.
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