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15 January 2025 Preparation of Ti3C2TX MXene/PVA composite films for gas and humidity sensing applications
Fan Wu, Yuke Chu, Guangjian Xing
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Proceedings Volume 13513, The International Conference Optoelectronic Information and Optical Engineering (OIOE2024); 135130S (2025) https://doi.org/10.1117/12.3045406
Event: The International Conference Optoelectronic Information and Optical Engineering (OIOE2024), 2024, Wuhan, China
Abstract
The development of sensing materials with high conductivity and large surface area is the focus of future research as these characteristics are crucial for achieving high sensitivity in resistive sensors. In this study, a Ti3C2Tx MXene dispersion was prepared using an LiF/HCl etching process. PVA microfibers films prepared with an electrospinning method were then impregnated into the above Ti3C2Tx dispersion for the preparation of Ti3C2Tx/PVA composite films using a dipping-drying method. The gas sensing and humidity sensing properties of these composites films were investigated in detail. The composite films exhibited high sensitivity to NH3 in gas sensing, with a sensitivity of 0.075 over a wide range (10-200 ppm), along with a fast response time (26 s), fast recovery time (17 s), and good cyclic stability. In terms of humidity sensing, the Ti3C2Tx/PVA composite films demonstrated high sensitivity within a wide range (0.83, 11-33% RH; 13.93, 33-84% RH; 54.78, 84-97% RH), with the moisture hysteresis being approximately 4.45% RH. Moreover, it displayed a rapid response time (5 s) and recovery time (4.5 s), as well as good cycle stability. Overall, the MXene/PVA composite film has wide applications and demonstrates great potential in both gas and humidity sensing.
(2025) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Fan Wu, Yuke Chu, and Guangjian Xing "Preparation of Ti3C2TX MXene/PVA composite films for gas and humidity sensing applications", Proc. SPIE 13513, The International Conference Optoelectronic Information and Optical Engineering (OIOE2024), 135130S (15 January 2025); https://doi.org/10.1117/12.3045406
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KEYWORDS
Humidity
Composites
Resistance
Polyvinyl alcohol
Relative humidity
Electrical conductivity
Gases
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