Two-dimensional transition metal carbides (MXenes) have attracted considerable attention owing to their unique structures and high dielectric losses. To improve the electron transfer ability of electrodes with poor conductivity, highly conductive materials have been incorporated into the surfaces of electrodes modified with metal–organic frameworks (MOFs). Compared to pure metals, MXenes and MOFs exhibit similarly high conductivities while offering enhanced dispersion in multipolar solvents and broader tunability. Titanium carbide (TiCT) is a representative MXene with numerous exposed functional groups on its surface, including hydroxyl, O, and fluorine groups. These functional groups attach to semiconductor materials via electrostatic interactions or H bonds, endowing the supramolecular assembly of MOFs and TiCT with high conductivity at the macro level. The resistance variations in MOF/TiCT are reflected in the formation of Schottky junctions, which provide a host platform for MOFs. This review provides an evaluation of the latest research frontiers in the MOF/MXene direction by categorizing the sensors based on their target detection. Moreover, the design principles and working mechanisms of previously reported MOF/MXene detection sensors are summarized and the design features adopted to address the difficulties in synthesis are described. Finally, the challenges and future development prospects in this field are discussed.

中文翻译：

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MOF/MXene 传感器的最新进展和前景

二维过渡金属碳化物（MXenes）由于其独特的结构和高介电损耗而引起了广泛的关注。为了提高导电性差的电极的电子传输能力，高导电材料已被纳入金属有机框架（MOF）修饰的电极表面。与纯金属相比，MXene 和 MOF 表现出类似的高电导率，同时在多极性溶剂中提供增强的分散性和更广泛的可调性。碳化钛（TiCT）是一种代表性的MXene，其表面具有许多暴露的官能团，包括羟基、O和氟基团。这些官能团通过静电相互作用或氢键附着在半导体材料上，赋予 MOF 和 TiCT 的超分子组装体在宏观水平上具有高导电性。 MOF/TiCT 中的电阻变化反映在肖特基结的形成中，肖特基结为 MOF 提供了宿主平台。本综述根据目标检测对传感器进行分类，对 MOF/MXene 方向的最新研究前沿进行了评估。此外，总结了先前报道的MOF/MXene检测传感器的设计原理和工作机制，并描述了为解决合成困难而采用的设计特点。最后，讨论了该领域面临的挑战和未来的发展前景。