The novel Co₃O₄@MXene nanocomposites (CMNs) were fabricated by a facile, green and highly tunable strategy without using any chemical modifiers. Various characterization results proved that nano-size Co₃O₄ was loaded on MXene nanosheets and CMNs exhibited a large specific surface area, especially for CMNs-3 (76.9 m²·g⁻¹). The catalytic properties of CMNs for ammonium perchlorate (AP) thermal decomposition were investigated by a series of catalytic experiments. The results showed that the high-temperature decomposition (HTD) temperature and decomposition heat of AP mixed with CMNs-3 (2 wt%) could significantly decrease to 316.3 °C and remarkably increase to 1457.9 J·g⁻¹, respectively. Moreover, the CMNs-3 could significantly reduce the apparent activation energy of AP by 49.1% and increase the value of reaction rate constant of AP by 482.0%. As for the effects of mass content of CMNs-3 on AP decomposition, the HTD temperature could decrease by as high as 128.0 °C with ratios of 10.0 wt% CMNs-3. It could be predicted that CMNs-3 with excellent catalytic performance would be a potential catalyst to promote AP decomposition and the synthesis method of CMNs-3 could provide an idea for the preparation of other metal oxide nanomaterials with high catalytic activity.

新型 Co ₃ O ₄ @MXene 纳米复合材料 (CMN) 是通过一种简便、绿色且高度可调的策略制造的，无需使用任何化学改性剂。各种表征结果证明纳米尺寸的Co ₃ O ₄负载在MXene 纳米片上，CMNs 表现出很大的比表面积，特别是对于CMNs-3 (76.9 m ² ·g ^-1 )。通过一系列催化实验研究了CMNs对高氯酸铵（AP）热分解的催化性能。结果表明，AP与CMNs-3（2 wt%）混合后的高温分解（HTD）温度和分解热显着降低至316.3 °C，显着升高至1457.9 J·g ^-1， 分别。此外，CMNs-3可显着降低AP的表观活化能49.1%，并使AP的反应速率常数值提高482.0%。至于CMNs-3的质量含量对AP分解的影响，当CMNs-3的比例为10.0 wt%时，HTD温度可降低高达128.0°C。可以预见，具有优异催化性能的CMNs-3将是一种潜在的促进AP分解的催化剂，CMNs-3的合成方法可以为制备其他具有高催化活性的金属氧化物纳米材料提供思路。