纳米复合材料
复合数
热液循环
材料科学
化学工程
分子
乙醇
选择性
纳米技术
化学
催化作用
复合材料
工程类
有机化学
作者
Shuai Zhang,Peng Song,Jing Sun,Yongling Ding,Qi Wang
标识
DOI:10.1016/j.snb.2022.133216
摘要
Ethanol, as one of the most widely used volatile organic compounds (VOCs), can cause serious harm to the human respiratory system when exposed to low concentrations of ethanol gas for a long time. Here, we successfully prepared MoO3/Ti3C2Tx MXene nanocomposites by a simple hydrothermal synthesis method, realizing the effective monitoring of low-concentration ethanol gas ([email protected] ppm). The specific surface area of MoO3/Ti3C2Tx MXene nanocomposites (61.044 m2/g) is doubled compared with Ti3C2Tx MXene (33.385 m2/g), which provides more reaction centers and active sites for ethanol molecules. Meanwhile, the gas-sensing results revealed that MoO3/Ti3C2Tx MXene nanocomposites show outstanding selectivity and reproducibility, as well as fast response-recovery (10/49 s). Subsequently, the possible sensing mechanism of the composite was further discussed in detail in combination with density functional theory (DFT). This work provides a new sensing design strategy for detecting VOCs at low-temperature.
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