Among the transition metal oxide catalysts, manganese oxides have great potential for formaldehyde (HCHO) oxidation at ambient temperature because of their high activity, nontoxicity, low cost, and polybasic morphologies. In this work, a MnO₂-based catalyst (M-MnO₂) with an interconnected network structure was successfully synthesized by a one-step hydrothermal method. The M-MnO₂ catalyst was composed of the main catalytic agent, δ-MnO₂ nanosheets, dispersed in a nonactive framework material of γ-MnOOH nanowires. The catalytic activity of M-MnO₂ for HCHO oxidation at room temperature was much higher than that of the pure δ-MnO₂ nanosheets. This is attributed to the special interconnected network structure. The special interconnected network structure has high dispersion and specific surface area, which can provide more surface active oxygen species and higher surface hydroxyl groups to realize rapid decomposition of HCHO.

在过渡金属氧化物催化剂中，锰氧化物因其高活性，无毒，低成本和多元形态而在环境温度下具有很大的甲醛（HCHO）氧化潜力。在这项工作中，通过一步水热法成功地合成了具有互连网络结构的MnO ₂基催化剂（M-MnO ₂）。所述M-的MnO ₂催化剂组成的主催化剂的，δ -MnO _2个纳米片，分散在非激活框架材料γ -MnOOH纳米线。室温下，M-MnO ₂对HCHO氧化的催化活性远高于纯δ- MnO。₂纳米片。这归因于特殊的互连网络结构。特殊的互连网络结构具有高分散性和比表面积，可以提供更多的表面活性氧种类和更高的表面羟基，从而实现HCHO的快速分解。