Potassium Titanate Supported Atomically Dispersed Palladium for Catalytic Oxidation.

Single-atom catalysts based on noble metals provide efficient atomic utilization along with enhanced reactivity. Herein, a convenient strategy to construct atomically dispersed palladium catalyst on layered potassium titanate (KTO), which has enhanced interaction between the TiO 6 layer and the palladium atoms, is presented. Due to the presence of K + ions in the interlayers of KTO, the TiO 6 octahedron layers have negative charge, which increases the interaction between Pd atoms and the substrate, thus preventing their agglomeration. In addition, the provision of charge of K + ion makes the molecular oxygen in the system easier to be activated and promotes catalytic oxidation activity.