Abstract Delamination of the multiple layers in 2D MXenes is still a crucial challenge because this process generates single-layer nanosheets and extends specific surface area, which makes MXenes promising substrate to carry matters and endow them with enhanced dielectric loss. In present work, novel multilayered composites of Co0.2Ni0.4Zn0.4Fe2O4 nanoparticles (CNZF) attached to MXenes (Ti3C2Tx/CNZF) with various compositions were synthesized by hydrothermal process. Owing to the nano-sized ferrites that are helpful for the delamination of layered structure and improved anisotropic energy, the multiple scattering and dielectric loss of Ti3C2Tx/CNZF are greatly boosted. Hence, the Ti3C2Tx/CNZF composites showcased a prominent microwave attenuation property, with a minimum reflection loss value of −58.4 dB at 6.2 GHz. Simultaneously, the effective bandwidth is at lower frequency region of 3.8–6.0 GHz associated with an absorber thickness of 4.2 mm. The present work provides a strategy to construct novel 2D absorbing materials by allowing ultrasmall magnetic nanoparticles to decorate on the interlayers of hierarchical structure.

中文翻译：

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实现具有可调电磁吸收的 Ti3C2Tx/CNZF 复合材料的分层策略

摘要 2D MXenes 中多层的分层仍然是一个至关重要的挑战，因为该过程产生单层纳米片并扩展比表面积，这使得 MXenes 成为承载物质并赋予它们增强介电损耗的有希望的基材。在目前的工作中，通过水热法合成了 Co0.2Ni0.4Zn0.4Fe2O4 纳米粒子 (CNZF) 连接到具有各种成分的 MXenes (Ti3C2Tx/CNZF) 的新型多层复合材料。由于纳米铁氧体有助于分层结构的分层和提高各向异性能量，大大提高了 Ti3C2Tx/CNZF 的多次散射和介电损耗。因此，Ti3C2Tx/CNZF 复合材料表现出突出的微波衰减特性，在 6.2 GHz 下的最小反射损耗值为 -58.4 dB。同时地，有效带宽位于 3.8-6.0 GHz 的低频区域，吸收体厚度为 4.2 mm。目前的工作提供了一种通过允许超小磁性纳米粒子装饰在分层结构的夹层上来构建新型 2D 吸收材料的策略。