Flexible Ti3C2Tx MXene/PANI/Bacterial Cellulose Aerogel for e-Skins and Gas Sensing,ACS Applied Materials & Interfaces

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Flexible Ti3C2Tx MXene/PANI/Bacterial Cellulose Aerogel for e-Skins and Gas Sensing
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2021-09-15 , DOI: 10.1021/acsami.1c12991
Hui Zhi _{1,

2} , Xiaobo Zhang _{1,

2} , Fengya Wang _{1,

2} , Peng Wan ₃ , Liang Feng ₁

Affiliation

Flexible pressure sensors made of carbon materials have been used in electronic skins (e-skins), whose performance can be enhanced if composite sensing materials are used. Herein, an MXene/polyaniline/bacterial cellulose (MXene/PANI/BC) aerogel sensor has been fabricated through the self-assembly process between the MXene and one-dimensional active material. Combined with fewer-layer or single-layer MXenes, the as-fabricated aerogel could be used as the active layer of the pressure sensor, monitoring tiny motion signals of finger bending, wrist bending, and pulse beating. Bluetooth wireless transmission could also be realized to monitor the real-time spatial pressure distributions on the mobile phone, making the aerogel-based sensor an ideal candidate in e-skins. Meanwhile, the aerogel-based sensor is sensitive toward NH₃ due to the unique three-dimensional (3D) structure of the aerogel and the abundant terminal groups (such as −O, −OH, and −F) of the MXene in the system that ensure efficient electronic transfer for the sensing process and create active sites for the absorption with the target gas. This work offers a versatile platform to develop MXenes to fabricate 3D composite aerogels for high-performance flexible multiple sensors.

中文翻译：

用于电子皮肤和气体传感的柔性 Ti3C2Tx MXene/PANI/细菌纤维素气凝胶

由碳材料制成的柔性压力传感器已用于电子皮肤（e-skins），如果使用复合传感材料，其性能可以得到增强。在此，通过MXene和一维活性材料之间的自组装过程制造了MXene/聚苯胺/细菌纤维素（MXene/PANI/BC）气凝胶传感器。结合较少层或单层的 MXenes，制成的气凝胶可用作压力传感器的活性层，监测手指弯曲、手腕弯曲和脉搏跳动的微小运动信号。还可以实现蓝牙无线传输以监测手机上的实时空间压力分布，使基于气凝胶的传感器成为电子皮肤的理想选择。同时，基于气凝胶的传感器对 NH ₃敏感由于气凝胶独特的三维 (3D) 结构和系统中 MXene 丰富的末端基团（如 -O、目标气体吸收的位点。这项工作为开发 MXenes 提供了一个多功能平台，以制造用于高性能柔性多传感器的 3D 复合气凝胶。

更新日期：2021-09-29

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