TiCT MXene have attracted enormous attention in portable, wearable electronics areas due to its excellent flexible, electrical conductivity and outstanding physical and chemical properties. Here, 2D α-FeO/TiCT MXene composites were synthesized by in-suit growth of α-FeO on the surface of TiCT MXene and between the layers of TiCT MXene by solvothermal and annealing methods. Compared with pure α-FeO, the optimal α-FeO/TiCT MXene composites exhibited excellent gas sensitive performance (100 ppm can reach 20.27) and a theoretical ultra-low limit-of-detection of 10.19 ppb to HS gas at room temperature (25 C). The combination of α-FeO and TiCT lead to the layer spacing of TiCT MXene are further enlarged which is more favorable for HS gas adsorption. And the excellent performance is maintained even under bending conditions. This work provides a new idea for MOS/TiCT MXene in the field of flexible room temperature sensors.

中文翻译：

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基于 α-Fe2O3/Ti3C2Tx MXene 复合材料的柔性室温气体传感器，用于 ppb 级 H2S 检测


TiCT MXene因其优异的柔性、导电性和优异的物理化学性能，在便携式、可穿戴电子领域引起了极大的关注。在此，通过溶剂热和退火方法，通过在 TiCT MXene 表面和 TiCT MXene 层之间适当生长 α-FeO​​ 来合成二维 α-FeO​​/TiCT MXene 复合材料。与纯α-FeO​​相比，最优的α-FeO​​/TiCT MXene复合材料表现出优异的气敏性能（100 ppm可达20.27），室温下对H2S气体的理论超低检测限为10.19 ppb（25 C）。 α-FeO​​与Ti3CT的结合导致Ti3CT MXene的层间距进一步增大，更有利于H2S气体的吸附。即使在弯曲条件下也能保持优异的性能。该工作为MOS/TiCT MXene在柔性室温传感器领域提供了新思路。