Ti_(3)C_(2)T_(x)基柔性可穿戴氨气传感器的开发

Development of Flexible Wearable Ammonia Sensor Based on Ti_(3)C_(2)T_(x)

针对传统的氨气传感器便携性差、柔韧性低、无法与织物结合实现可穿戴等问题,提出了一种柔性氨气传感器的制备策略,采用聚酰亚胺作为柔性衬底,金作为导电电极,将敏感材料Ti_(3)C_(2)T_(x)纳米片涂覆于金电极上构筑得到Ti_(3)C_(2)T_(x)基氨气传感器。该传感器可实现在室温下高灵敏度检测氨气,最低检测限为0.1×10^(-6),且在0.1×10^(-6)~50×10^(-6)内具有良好的线性响应。多次弯折大于90°下材料无脱落及裂纹情况,表明传感器具有良好的柔韧性与抗弯折性。该性能有利于将传感器集成于防护服,可应用于石化现场日常巡检、泄漏检测、异味溯源等安防领域。Ti_(3)C_(2)T_(x)基氨气传感器的构建为新型柔性可穿戴传感器的发展提供了新的方向。

Aiming at the problems such as poor portability,low flexibility and inability to be wearable in combination with fabrics,a flexible ammonia sensor preparation strategy was proposed.Polyimide was used as the flexible substrate,and gold was used as the conductive electrode.The sensitive materials of Ti_(3)C_(2)T_(x)nanosheets were coated on the gold electrode to construct the Ti_(3)C_(2)T_(x)-based ammonia sensor.The sensor can achieve high sensitivity detection of ammonia at room temperature,the lowest detection limit was 0.1×10^(-6)and had a good linear response within 0.1×10^(-6)~50×10^(-6).When the material was bent more than 90°for multiple times,the material did not fall off and crack,indicating that the sensor had good flexibility and bending resistance.This performance was conducive to the integration of sensors in protective clothing,which can be applied to the daily inspection of petrochemical sites,leak detection,odor tracing and other security fields.The construction of Ti_(3)C_(2)T_(x)-based ammonia sensor provided a new direction for the development of new flexible wearable sensors.