Catalytic combustion of different types of VOCs with various functional groups generally requires certain catalysts with high efficiency. Here, a novel manganese oxide catalyst was tuned via incorporation of small amounts of different metals, including Ce, Ir, Ag, Pd, Cu and Fe respectively, exhibiting flexible activity in the abatement of different VOC species. Pd and Ag doping was beneficial for toluene oxidation, while the addition of Cu significantly enhanced the acetone elimination performance, and Ir incorporation boosted the removal of dichloromethane. XRD, Raman, and TEM results revealed that the different metal ions were well-dispersed into the lattice of OMS-2. Elemental mapping images and ICP-OES combined with DFT calculations demonstrated that Ce, Ir, Pd, Cu and Fe were incorporated into OMS-2 by substituting for Mn on octahedral sites, and Ag could be stabilized in the tunnel of OMS-2 via replacing K ions. EXAFS results suggested that the local tunnel structures of OMS-2 were almost intact after incorporation of the different metals. Pd-OMS-2 and Ag-OMS-2 exhibited excellent activity in catalytic oxidation of toluene due to the improved reducibility and mobility of oxygen. Cu ions improved the scission of CC bonds in acetone and Ir ions facilitated the cleavage of the CCl bond in dichloromethane, all of which contributed to their highly specific activity in removal of the corresponding VOCs. This work provides information on the production of highly efficient metal sites for catalytic oxidation of specific VOC species, and may assist with the design of flexible catalysts for control of miscellaneous VOCs.

具有不同官能团的不同类型VOCs的催化燃烧一般需要一定的高效催化剂。在这里，通过掺入少量不同金属（分别包括 Ce、Ir、Ag、Pd、Cu 和 Fe）来调整新型氧化锰催化剂，在减少不同 VOC 物种方面表现出灵活的活性。Pd和Ag的掺杂有利于甲苯的氧化，而Cu的加入显着提高了丙酮消除性能，Ir的掺入促进了二氯甲烷的去除。XRD、Raman 和 TEM 结果表明，不同的金属离子很好地分散在 OMS-2 的晶格中。元素映射图像和 ICP-OES 结合 DFT 计算表明 Ce、Ir、Pd、Cu 和 Fe 通过在八面体位点上取代 Mn 并入 OMS-2，并且 Ag 可以通过替换 K 离子稳定在 OMS-2 的隧道中。EXAFS 结果表明，在掺入不同金属后，OMS-2 的局部隧道结构几乎完好无损。Pd-OMS-2 和 Ag-OMS-2 由于改善了氧的还原性和迁移率，在甲苯的催化氧化中表现出优异的活性。Cu离子改善了C的断裂丙酮和 Ir 离子中的 C 键促进了二氯甲烷中 C Cl 键的断裂，所有这些都有助于它们在去除相应的 VOC 方面的高比活性。这项工作提供了有关生产用于催化氧化特定 VOC 物种的高效金属位点的信息，并可能有助于设计用于控制各种 VOC 的灵活催化剂。