Self-Assembly 3D Porous Crumpled MXene Spheres as Efficient Gas and Pressure Sensing Material for Transient All-MXene Sensors

• 作者: Zijie Yang Siyuan Lv Yueying Zhang Jing Wang Li Jiang Xiaoteng Jia Chenguang Wang Xu Yan Peng Sun Yu Duan Fangmeng Liu Geyu Lu
• 来源期刊: 纳微快报（英文版）
• 年，卷（期）: 2022,（4）
• 页码范围: 1-14
• 页数: 14页
• 语种: 英文

摘要

Environmentally friendly degradable sen-sors with both hazardous gases and pressure efficient sensing capabilities are highly desired for various prom-ising applications,including environmental pollution monitoring/prevention,wisdom medical,wearable smart devices,and artificial intelligence.However,the transient gas and pressure sensors based on only identical sens-ing material that concurrently meets the above detection needs have not been reported.Here,we present transient all-MXene NO2 and pressure sensors employing three-dimensional porous crumpled MXene spheres prepared by ultrasonic spray pyrolysis technology as the sensing layer,accompanied with water-soluble polyvinyl alcohol substrates embedded with patterned MXene electrodes.The gas sensor achieves a ppb-level of highly selective NO2 sensing,with a response of up to 12.11％at 5 ppm NO2 and a detection range of 50 ppb-5 ppm,while the pressure sensor has an extremely wide linear pressure detection range of 0.14-22.22 kPa and fast response time of 34 ms.In parallel,all-MXene NO2 and pressure sensors can be rapidly degraded in medical H2O2 within 6 h.This work provides a new avenue toward environmental monitoring,human physiological signal monitoring,and recyclable transient electronics.