MXenes公司
化学气相沉积
材料科学
涂层
聚合物
化学稳定性
纳米技术
化学工程
沉积(地质)
复合材料
沉积物
生物
工程类
古生物学
作者
Jonghyun Choi,Myung Seok Oh,Ahyeon Cho,Jin Hwa Ryu,Yong-Jae Kim,Hohyung Kang,Soo‐Yeon Cho,Sung Gap Im,Seon Joon Kim,Hee‐Tae Jung
出处
期刊:ACS Nano
[American Chemical Society]
日期:2023-05-24
卷期号:17 (11): 10898-10905
被引量:24
标识
DOI:10.1021/acsnano.3c02668
摘要
Developing a methodology to enhance long-term stability is one of the most important issues in MXene research, since they are prone to oxidation in the ambient environment. Although various approaches have been suggested to improve the stability of MXene, they have suffered from complicated processes and limited applicability to various types of MXene nanostructures. Herein, we report a simple and versatile technique to enhance the environmental stability of MXenes. Ti3C2Tx MXene films were decorated with a highly hydrophobic polymer, 1H,1H,2H,2H-perfluorodecyl methacrylate (PFDMA), using initiated chemical vapor deposition (iCVD) where iCVD allows the facile postdeposition of polymer films of desired thickness on MXene films. The oxidation resistance was evaluated by fabricating MXene gas sensors and measuring the change in signal-to-noise ratio (SNR) of volatile organic compound (VOC) gases under harsh conditions (RH 100% at 50 °C) for several weeks where the performance in the absence and presence of PFDMA was compared. The results show that while the SNR of PFDMA-Ti3C2Tx sensors was retained, a dramatic increase of the noise level and a decrease in the SNR were observed in pristine Ti3C2Tx. We believe that this simple and nondestructive method will offer great potential to enhance the stability of a wide range of MXenes.
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