A novel oxidized MXene-supported MCo₂O₄ (oxidized MXene/MCo₂O₄, M = Mn, Zn, Cu and Co) nanocomposite was successfully synthesized through a facile hydrothermal assisted calcination method. Various characterization results indicated that MCo₂O₄ nanoparticles were successfully formed in situ on MXene nanosheets, which effectively reduce the aggregation of nanoparticles and remarkably improve the specific surface area, especially MZC (203.5 m² g⁻¹). Among the oxidized MXene/MCo₂O₄ nanocomposites, oxidized MXene/ZnCo₂O₄ (MZC) enormously ameliorated the performance of AP decomposition. With adding MZC (2.0 wt%), the high-temperature decomposition (HTD) temperature of AP could significantly decrease to 297.1 °C, while the decomposition heat could increase to 1409.6 J g⁻¹, respectively. The apparent activation energy of AP decomposition decreased from 209.6 kJ mol⁻¹ (pure AP) to 104.5 kJ mol⁻¹ (AP mixed with MZC). The excellent catalytic performance of MZC might be due to the synergistic effect of MXene nanosheets and ZnCo₂O₄ nanoparticles. It could be foreseen that MZC would be an excellent material for optimizing AP decomposition and would supply an idea for the development of new catalyst materials.

中文翻译：

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原位合成氧化 MXene 基金属钴尖晶石纳米复合材料对高氯酸铵的热分解有极好的促进作用

通过简便的水热辅助煅烧方法成功合成了一种新型氧化 MXene 负载的 MCo ₂ O ₄（氧化 MXene/MCo ₂ O ₄，M = Mn、Zn、Cu 和 Co）纳米复合材料。各种表征结果表明，MCo ₂ O ₄纳米颗粒成功地在MXene纳米片上原位形成，有效地减少了纳米颗粒的聚集并显着提高了比表面积，尤其是MZC（203.5 m ² g ^-1）。在氧化的 MXene/MCo ₂ O ₄纳米复合材料中，氧化的 MXene/ZnCo ₂ O ₄(MZC) 极大地改善了 AP 分解的性能。添加MZC（2.0 wt%）后，AP的高温分解（HTD）温度可显着降低至297.1 °C，而分解热可分别增加至1409.6 J g ^-1。AP分解的表观活化能从209.6 kJ mol ^-1 (纯AP)降低到104.5 kJ mol ^-1 (AP与MZC混合)。MZC 优异的催化性能可能是由于 MXene 纳米片和 ZnCo ₂ O ₄纳米颗粒的协同作用。可以预见，MZC 将成为优化 AP 分解的优良材料，并为开发新型催化剂材料提供思路。