In-Depth Understanding of the Oxidative Compatibility of Volatile Organic Compounds with MnO and Pt-Loaded Catalysts.

Designing suitable catalysts for efficiently degrading volatile organic compounds (VOCs) is a great challenge due to the distinct variety and nature of VOCs. Herein, the suitability of different typical VOCs (toluene and acetone) over Pt-based catalysts and MnO was investigated carefully. The activity of MnO was inferior to Pt-loaded catalysts in toluene oxidation but showed superior ability for destroying acetone, while Pt loading could boost the catalytic activity of MnO for both acetone and toluene. This suitability could be determined by the physicochemical properties of the catalysts and the structure of the VOC since toluene destruction activity is highly reliant on Pt in the metallic state and linearly correlated with the amount of surface reactive oxygen species (O), while the crucial factor that affects acetone oxidation is the mobility of lattice oxygen (O). The Pt/MnO catalyst shows highly active Pt-O-Mn interfacial sites, favoring the generation of O and promoting Mn-O mobility, leading to its excellent performance. Therefore, the design of abundant active sites is an effective means of developing highly adaptive catalysts for the oxidation of different VOCs.