In this paper, ZnO/Ti₃C₂T_x composites containing different proportions of Ti₃C₂T_x were synthesized by hydrothermal method. The effects of different proportions of MXene content on the gas sensing properties of ZnO/Ti₃C₂T_x composites were studied. It is found that ZnO/Ti₃C₂T_x composites show a good response to acetone and excellent reversibility and the ZnO/Ti₃C₂T_x composites containing 2 wt% Ti₃C₂T_x had the highest response to acetone. The gas-sensing performance of ZnO/multi-layer MXene and ZnO/few-layer MXene were compared. The results showed that ZnO/Ti₃C₂T_x composites with few-layer MXene had a higher response to acetone, 14.4, indicating that the few-layer MXene solution has better dispersion for ZnO and gas-sensing properties. Finally, the gas sensing mechanism of few-layer MXene/ZnO was suggest.

本文采用水热法合成了含有不同比例Ti ₃ C ₂ T _{x的ZnO/Ti 3} C ₂ T _{x复合材料。研究了不同比例的MXene含量对ZnO/Ti 3} C ₂ T _x复合材料气敏性能的影响。研究发现，ZnO/Ti ₃ C ₂ T _x复合材料对丙酮有良好的响应性和优异的可逆性，而含有 2 wt% Ti ₃ C ₂ T的 ZnO/Ti ₃ C ₂ T _{x复合材料x}对丙酮的反应最高。比较了ZnO/多层MXene和ZnO/少层MXene的气敏性能。结果表明，具有少层MXene的ZnO/Ti ₃ C ₂ T _x复合材料对丙酮的响应更高，为14.4，表明少层MXene溶液对ZnO具有更好的分散性和气敏性能。最后，提出了少层MXene/ZnO的气体传感机制。