A strategy simple, safe and suitable for large scale production of α-MnO₂ catalyst with high activity in VOCs oxidation is crucial for its application. The catalytic reactivity of α-MnO₂ catalyst is largely related with its oxygen vacancy. Herein, we report effective construction of oxygen vacancies on α-MnO₂ through simply adjusting precipitation temperature of a redox precipitation process. The key role of surface oxygen vacancies in toluene oxidation and the formation of different amount and distribution of the oxygen vacancies over the α-MnO₂ catalysts were revealed by characterizations together with DFT calculations. The best catalyst (α-MnO₂-60) exhibited significantly improved catalytic activity of α-MnO₂ catalyst in toluene oxidation (T₉₀ = 203 ℃) and excellent water resistance. The richest surface oxygen vacancies of α-MnO₂-60 contributed to its best catalytic activity, despite of its relatively lower specific surface area. This work may provide a new perspective for the rational design of high efficient VOCs catalysts.

甲策略简单，安全，适于大规模生产α-的MnO ₂催化剂在挥发性有机化合物氧化的高活性是其应用是至关重要的。α-MnO的催化反应₂的催化剂主要是用它的氧空位相关。在本文中，我们报道了在α-MnO的氧空位的有效的结构₂通过简单地调整氧化还原沉淀过程的析出温度。表面的氧空位的甲苯氧化的关键作用和不同量和氧空位分布在α-MnO的形成₂催化剂通过与DFT计算一起表征揭示。最好催化剂（α-MnO的₂-60）表现出改善显著α-MnO的催化活性₂在甲苯中的氧化催化剂（T ₉₀ = 203℃）和优异的耐水性。α-MnO的最丰富的表面氧空位₂ -60促成了其最好的催化活性，尽管其相对较低的比表面积。这项工作可能为合理设计高效VOCs催化剂提供新的视角。