NO is a toxic gas that poses a significant threat to the environment and human health. In this work, one-dimensional ZnO nanowires and two-dimensional layered titanium carbide (TiCT) have been prepared by hydrothermal and selective chemical etching methods, respectively. The TiCT/ZnO composites are synthesized by electrostatic self-assembly method. The characterization results indicate that the ZnO nanowires are uniformly dispersed on the surface of layered TiCT to form a heterostructure. Meanwhile, the gas sensitive performance of TiCT/ZnO composite material is investigated and compared with that of pure TiCT. The results reveal that the composite exhibits a high selectivity as well as sensitivity with a response value (S = Rg/Ra) of 18.66 to 100 ppm NO at 250 ℃, which is 4.3 times higher than that of pure TiCT. This proves that the prepared composite material is an effective sensing material for detecting NO gas.

中文翻译：

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用于NO2气体传感的Ti3C2TX纳米片/ZnO纳米线复合材料的合成

NO是一种有毒气体，对环境和人类健康构成重大威胁。在这项工作中，分别通过水热法和选择性化学刻蚀方法制备了一维ZnO纳米线和二维层状碳化钛（TiCT）。采用静电自组装法合成了TiCT/ZnO复合材料。表征结果表明，ZnO纳米线均匀分散在层状TiCT表面，形成异质结构。同时，研究了TiCT/ZnO复合材料的气敏性能，并与纯TiCT进行了比较。结果表明，该复合材料表现出较高的选择性和灵敏度，在250 ℃下对100 ppm NO的响应值（S = Rg/Ra）为18.66至100 ppm NO，是纯TiCT的4.3倍。这证明所制备的复合材料是一种有效的检测NO气体的传感材料。