TiCT MXene, a novel 2D material, has shown promise in the field of room temperature ammonia (NH) sensors through theoretical calculations and experimental. However, the disadvantage of low response hinders its practical application. In this study, we fabricate a gas sensor based on FeO nanoplate/TiO nanoparticles supported by 2D TiCT MXene to enhance NH sensing capabilities. Results reveal that the S2 sensor (with 3 mL FeCl) exhibits a significantly larger response value (3.23 times) and shorter response/recovery times (62 s and 74 s) compared to the pure TiCT MXene sensor when exposed to 100 ppm NH at room temperature (25℃). Additionally, the S2 sensor exhibits a good linear response (R = 0.95) within the range of 1–100 ppm NH. The enhanced gas sensing properties can be mainly attributed to the FeO/TiO/TiCT MXene heterogeneous structure and unique microstructure. This study is anticipated to serve as a valuable reference for the advancement of high-performance MXene-based NH sensors.

中文翻译：

---

由 2D Ti3C2Tx MXene 导电层支持的 Fe2O3 纳米板/TiO2 纳米粒子，可在室温下灵敏检测 NH3

TiCT MXene是一种新型2D材料，通过理论计算和实验，在室温氨（NH）传感器领域显示出了应用前景。但响应速度慢的缺点阻碍了其实际应用。在本研究中，我们制造了一种基于 Fe3O 纳米板/TiO 纳米颗粒并由 2D TiCT MXene 支持的气体传感器，以增强 NH 传感能力。结果表明，当在室温下暴露于 100 ppm NH 时，与纯 TiCT MXene 传感器相比，S2 传感器（含有 3 mL FeCl）表现出明显更大的响应值（3.23 倍）和更短的响应/恢复时间（62 秒和 74 秒）温度（25℃）。此外，S2 传感器在 1–100 ppm NH 范围内表现出良好的线性响应 (R = 0.95)。增强的气敏性能主要归因于FeO/TiO/Ti3CT MXene异质结构和独特的微观结构。这项研究预计将为基于 MXene 的高性能 NH 传感器的发展提供有价值的参考。