One-pot synthesis of atomically dispersed Pt on MnO2 for efficient catalytic decomposition of toluene at low temperatures

The catalytic degradation of volatile organic compounds (VOCs) at low temperature is still a great challenge for indoor air purification. In this paper, the doping of single-atom Pt into MnO2 with a one-pot hydrothermal process greatly improved the catalytic activity for toluene degradation at room temperature, achieving 100% conversion of 0.42 ppm toluene at 28 °C under the high gas-hourly-space-velocity of 300 L g−1 h−1. Furthermore, it achieved 100% conversion of 10 ppm toluene at 80 °C and complete oxidation into CO2 at 220 °C. The manganese and oxygen defects in MnO2 nanosheets effectively stabilized the single-atom platinum, and strong oxidative hydroxyl radicals (OH) is thought to contribute to its excellent performance.