In this work, manganese is selectively and efficiently recovered from spent lithium-ion batteries via advanced oxidation by using potassium permanganate and ozone, and the transition metal-doped α-MnO₂ and β-MnO₂ are one-step prepared for catalytic oxidation of VOCs. The recovery rate of manganese can be approximately 100% while the recovery efficiency of cobalt, nickel, and lithium is less than 15%, 2%, and 1%, respectively. Compared with pure α-MnO₂ and β-MnO₂, transition metal-doped α-MnO₂ and β-MnO₂ exhibit better catalytic performance in toluene and formaldehyde removal attributed to their lower crystallinity, more defects, larger specific surface area, more oxygen vacancies, and better low-temperature redox ability. Besides, the introduction of the appropriate proportion of cobalt or nickel into MnO₂ can significantly improve its catalytic activity. Furthermore, the TD/GC-MS result indicates that toluene may be oxidized in the sequence of toluene — benzyl alcohol — benzaldehyde-benzoic acid — acetic acid, 2-cyclohexen-1-one, 4-hydroxy-, cyclopent-4-ene-1,3-dione — carbon dioxide. This method provides a route for the resource utilization of spent LIBs and the synthesis of MnO₂.

在这项工作中，锰选择性和有效地从经由高级氧化花费的锂离子电池，通过使用高锰酸钾和臭氧，和过渡金属掺杂的α-MnO的回收₂和β-MnO的₂是用于催化氧化一步法制备挥发性有机化合物。锰的回收率约为100％，而钴，镍和锂的回收率分别低于15％，2％和1％。用纯α-MnO的比较₂和β-MnO的₂，过渡金属掺杂的α-MnO的₂和β-MnO的₂由于其较低的结晶度，更多的缺陷，更大的比表面积，更多的氧空位和更好的低温氧化还原能力，因此在甲苯和甲醛去除方面具有更好的催化性能。此外，将适当比例的钴或镍引入MnO ₂可以显着提高其催化活性。此外，TD / GC-MS结果表明，甲苯可以按甲苯-苯甲醇-苯甲醛-苯甲酸-乙酸，2-环己烯-1-酮，4-羟基-，环戊-4-烯的顺序被氧化。 -1,3-二酮-二氧化碳。该方法为废LIBs的资源利用和MnO ₂的合成提供了一条途径。