At present, it is still a challenge to develop ozone decomposition catalysts with high efficiency and high humidity resistance. Herein, a series of spinel (Mn,Co)₃O₄ catalysts are synthesized by coprecipitation method. Compared with the Mn₃O₄ and Co₃O₄ analogues, the obtained (Mn,Co)₃O₄ has ${\mathit{Co}}_{{\mathit{Co}}^{\mathit{III}}}^{\mathit{II}\times }$ acceptor-defect and ${\mathit{Mn}}_{{\mathit{Mn}}^{\mathit{II}}}^{\mathit{III}\times }$ donor-defect, which could contribute to the electron transfer between catalyst and ozone, accelerating ozone decomposition. Importantly, the in-situ Raman spectra of Mn₃O₄ shows the accumulation of peroxide species (O₂^2-) inferring that the decomposition of O₂^2- is the rate-determining step. On the other side, the reaction of the atomic oxygen with ozone would be rate-determining for Co₃O₄, as revealed by the low efficiency but no O₂^2- signal. However, the synergy of Mn and Co in (Mn,Co)₃O₄ accelerates both the rate-determining steps obtaining high efficiency, which provides a new idea to develop catalysts in ozone elimination.

目前，开发高效、高耐湿的臭氧分解催化剂仍是一个挑战。本文采用共沉淀法合成了一系列尖晶石(Mn,Co) ₃ O ₄催化剂。与Mn ₃ O ₄和Co ₃ O ₄类似物相比，所得(Mn,Co) ₃ O ₄具有${\mathit{公司}}_{{\mathit{公司}}^{\mathit{三}}}^{\mathit{二}\times }$ 受体缺陷和 ${\mathit{锰}}_{{\mathit{锰}}^{\mathit{二}}}^{\mathit{三}\times }$供体缺陷，这可能有助于催化剂和臭氧之间的电子转移，加速臭氧分解。重要的是，原位拉曼的Mn光谱₃ ö ₄示出了过氧化物种（O积累₂ ^2-推断的O-分解）₂ ^2-是所述速率确定步骤。另一方面，原子氧与臭氧的反应将决定 Co ₃ O _{4 的}速率，如低效率但没有 O ₂ ^2-信号所揭示的那样。然而，Mn 和 Co 在 (Mn,Co) ₃ O _{4 中}的协同作用 加速了两个决定速率的步骤，获得了高效率，这为开发消除臭氧的催化剂提供了新思路。