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 layer and the palladium atoms, is presented. Due to the presence of K ions in the interlayers of KTO, the TiO 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.