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Self-Assembly 3D Porous Crumpled MXene Spheres as Efficient Gas and Pressure Sensing Material for Transient All-MXene Sensors by Zijie Yang; Siyuan Lv; Yueying Zhang; Jing Wang; Li Jiang; Xiaoteng Jia; Chenguang Wang; Xu Yan; Peng Sun; Yu Duan; Fangmeng Liu; Geyu Lu is a Engineering article available to read on EtoBox.

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## Abstract Environmentally friendly degradable sensors with both hazardous gases and pressure efficient sensing capabilities are highly desired for various promising 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 sensing material that concurrently meets the above detection needs have not been reported. Here, we present transient all-MXene NO~2~ 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 NO~2~ sensing, with a response of up to 12.11% at 5 ppm NO~2~ 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 NO~2~ and pressure sensors can be rapidly degraded in medical H~2~O~2~ within 6 h. This work provides a new avenue toward e

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Author

Zijie Yang; Siyuan Lv; Yueying Zhang; Jing Wang; Li Jiang; Xiaoteng Jia; Chenguang Wang; Xu Yan; Peng Sun; Yu Duan; Fangmeng Liu; Geyu Lu

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Engineering (Physical Sciences)