Enhanced ammonia response of Ti3C2Tx nanosheets supported by TiO2 nanoparticles at room temperature
Enhanced ammonia response of Ti3C2Tx nanosheets supported by TiO2 nanoparticles at room temperature
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TiO2 纳米粒子支持的 Ti3C2TX 纳米片在室温下增强氨响应
DOI：
10.1016/j.snb.2019.126874
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发表时间：
2019-11-01
影响因子：
8.4
通讯作者：
Jiang, Yadong
中科院分区：
文献类型：
--
作者：
Tai, Huiling;Duan, Zaihua;Jiang, Yadong
理论计算和实验测试表明，Ti3C2Tx作为一种新型的二维材料，在室温氨(NH3)传感器领域具有广阔的应用前景。然而，其对NH3的敏感性能仍有待提高。在这种短通信中，为了提高纯Ti3C2Tx的氨敏性能，研制了基于TiO2C2Tx双层膜的气敏元件。结果表明，在室温25℃(相对湿度60.8%)下，与纯Ti3C2Tx传感器相比，Ti3C2Tx传感器对10ppm NH3具有更大的响应值(1.63倍)和更短的响应/恢复时间(0.65/0.52倍)。同时，TiO2C2Tx传感器在NH3浓度为2-10ppm时具有良好的线性响应(R-2=0.95596)，对NH3的响应可低至0.5ppm。本工作有望为开发高性能的Ti3C2Tx基NH3传感器提供有益的参考。
As a novel 2D material, Ti3C2Tx has been proved to be promising in the field of room temperature ammonia (NH3) sensors by theoretical calculation and experimental testing. However, its NH3 sensing properties still need to be enhanced. In this short communication, the gas sensor based on TiO2/Ti3C2Tx bilayer film is fabricated for enhancing the NH3 sensing properties of pure Ti3C2Tx. The results show that the TiO2/Ti3C2Tx sensor exhibits larger response value (1.63 times) and shorter response/recovery times (0.65/0.52 times) that of pure Ti3C2Tx sensor to 10 ppm NH3 at room temperature of 25 degrees C (60.8% relative humidity). Meanwhile, the TiO2/Ti3C2Tx sensor is of good linear response (R-2 = 0.95596) at 2-10 ppm NH3 and can respond to NH3 as low as 0.5 ppm. This work is expected to provide useful reference for the development of high performance Ti3C2Tx-based NH3 sensors.