Mediating Trade‐Off Between Oxidability and SO ₂ Resistance in Hydrocarbon Purification by Tailoring the Pt ₁ Charge Density on Pt ₁ ‐[Pt ₁ /MnO ₂ ]/Al ₂ O ₃ Island‐Sea Syne

ABSTRACT How to break the trade‐off effect between oxidability and SO 2 resistance through regulating the electron density of active sites during industrial volatile organic compounds (VOCs) decomposition is a huge challenge. Herein, the Pt 1 electron density was optimized by modulating the electrostatic adsorption ability of MnO 2 or Al 2 O 3 with different structural characteristics. A synergistic Pt 1(0.2) ‐[Pt 1(0.8) /MnO 2 ]/Al 2 O 3 island‐sea catalyst converts 90% of acetone to CO 2 at just 160°C in the presence of 30 ppm SO 2 (apparent activation energy as low as 81.06 kJ·mol −1 ), and displays high universality to other pollutants such as propane and toluene. Pt 1 atoms stabilized on MnO 2 island are mostly positively charged (Pt δ+ ), which dominate in adsorbing and activating acetone molecules with high electronegativity. The strong interaction between Pt and MnO 2 can promote the cleavage of C‐C and accelerate the generation of active *O species. Meanwhile, Pt 1 atoms on Al 2 O 3 are proposed in metallic state (Pt 0 ) to preferentially adsorb SO 2 , producing inactive and easily decomposable SO 4 2− /SO 3 2− species, therefore protecting the Pt δ+ active sites. This work provides new ideas for developing specific catalysts with synergistic functionalities for efficacious catalytic purification of VOCs in industrial complex environments, displaying remarkable practicability and environmental significance.