Indoor air quality affects people's health directly, and gets growing attention from all the world. Long-term exposure to volatile organic compounds (VOCs) would stimulate the eyes, skin and respiratory tract, and even cause irreversible damage to the human body. Catalytic oxidation by noble metal platinum based MnO2 is considered as one of the usefull ways to remove VOCs at room temperature. By the way of depositing single atom platinum on catalysts can maximize the atom efficiency and improve the activity and selectivity of materials. However, the synthesis of metal single atoms by traditional methods is extremely difficult because of the diffusion, aggregation and nucleation of the metal ions during liquid phase reactions. Herein, we designed a facile method to generate atomically dispersed platinum via freezing the mixture solution of MnO2 and chloroplatinic acid, and then photoreduction frozen chloroplatinic acid by ultraviolet light. During the iced-photoreduction reaction, the aggregation of platinum atoms was prevented, thus single platinum atoms could be successfully deposited on the surface of MnO2. The generated materials not only exhibited high catalytic activity for caproaldehyde at room temperature, but also significantly improved the atom efficiency of platinum. This iced-photochemical reduction route could provide a promising way for green synthesis of single atoms supported on materials and be helpful for the indoor air purification at room temperature.

Single-atom catalyst of platinum supported on MnO<sub>2</sub> for catalytic decomposition of caproaldehyde at room temperature

256th National Meeting (2018)

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Single-atom catalyst of platinum supported on MnO2 for catalytic decomposition of caproaldehyde at room temperature

Single-atom catalyst of platinum supported on MnO₂ for catalytic decomposition of caproaldehyde at room temperature