^{摘要：铁氧体强吸收频带不够宽、密度大等缺点，制约了它在吸波材料领域的广泛应用。对但是，研究发现通过和不同材料和复合，可以结合两种材料的优势，使铁氧体的吸波表现更加优异。目前，最普遍的方法就是与石墨烯复合。然而，尽管MXene和石墨烯具有相似的结构，但MXene比石墨烯具有更大的比表面积，而且又是多层材料。因此，MXene是MFe2O4的理想复合载体，可用于开发吸波材料、药物载体、电极材料等新材料。本文用水热法合成Co0.5Ni0.5Fe2O4粉体，通过控制合成温度与合成时间来获得合成Co0.5Ni0.5Fe2O4粉体的最佳条件，通过用HF溶液刻蚀Ti3AlC2来制取Ti3C2粉体，通过加入不同比例Ti3C2粉体至Co0.5Ni0.5Fe2O4溶液中，观察MXene对铁氧体电磁性能的影响三。}

^{关键词： 吸波材料；铁氧体；MXene；电磁性能}

^{Preparation and electromagnetic properties of MXene/ Co0.5Ni0.5Fe2O4 Composites}

^{Abstrate：Ferrite has some defeats which restrict its wide application in the field of microwave absorbing materials, like narrow strong absorption band and large density. However, previous studies find that the combination of different materials can combine the advantages of two kinds of materials, and makes it more excellent. In the field of absorbing materials, the most common way is to composite with graphene. However, it is found that MXene which has a two-dimensional structure which is similar to grapheme. It can make combination better than that of graphene. Therefore, MXene has become an ideal composite carrier for MFe2O4, and can be used to develop new materials such as absorbing materials, drug carriers, electrode materials and so on. In this paper, hydrothermal method were used to make Co0.5Ni0.5Fe2O4 and the best technological conditions for synthesizing Co0.5Ni0.5Fe2O4 powders were determined by setting different time and temperature. After the optimum temperature and time were obtained, the effects of different proportions of MXene on the electromagnetic properties of ferrite were observed by adding different proportions of Ti3C2 powder to Co0.5Ni0.5Fe2O4 solution.}

^{KeyWords:  Absorbing materials; Ferrite; MXene; Electromagnetic properties}

^{目  录}

^{1  绪论 1}

^{1.1  吸波材料 1}

^{1.1.1  吸波材料的简介 1}

^{1.1.2 吸波材料的吸波原理 1}

^{1.2 MXene材料 2}

^{1.2.1  MXene材料的简介 2}

^{1.2.2  MXene材料的性能 2}

^{1.2.3  MXene材料的应用 3}

^{1.2.4  MXene材料的制备方法 4}

^{1.3  MFe2O4尖晶石型铁氧体材料 5}

^{1.3.1  MFe2O4尖晶石型铁氧体材料的简介 5}

^{1.3.2 MFe2O4尖晶石型铁氧体材料的吸波原理 5}

^{1.3.3  MFe2O4尖晶石型铁氧体材料的制备 5}