▎ 摘　　要

Nitrogen-dopedi graph (NG) was synthesized by thermal annealing of graphene oxide (GO) using melamine as the nitrogen source, and NG-loaded manganese (Mn/NG) Was prepared using the immersion precipitation method. At 80% relative humidity (RH) and an initial ozone concentration of 85.7 mg"m 3, the decomposition rate of ozone remained above 80% after 24 h of reaction. Linder the low RH environment. the catalytic activity can be restored to the initial state again. The nitrogen doping not only created structural defects l'or the catalyst, but also the lone pair electrons of nitrogen atoms increased the electron density of oxygen vacancies, reduced the adsorption energy of water molecules, and improved the moisture,resistance of the catalyst.