Room-Temperature Detection of Perfluoroisobutyronitrile with SnO2/Ti3C2Tx Gas Sensors.
Room-Temperature Detection of Perfluoroisobutyronitrile with SnO2/Ti3C2Tx Gas Sensors.
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DOI：
10.1021/acsami.2c11216
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发表时间：
2022-10
影响因子：
9.5
通讯作者：
Peng Wu;Yi Li;S. Xiao;Dachang Chen;Junyi Chen;Ju Tang;Xiaoxing Zhang
中科院分区：
文献类型：
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作者：
Peng Wu;Yi Li;S. Xiao;Dachang Chen;Junyi Chen;Ju Tang;Xiaoxing Zhang
Ti 3C 2 Tx MXene是一种新兴的二维过渡金属碳化物/氮化物，具有大比表面积和高载流子迁移率等优异性能，可用于室温气敏。然而，实现高灵敏度和长期稳定性的原始Ti 3C 2 Tx基气体传感器仍然具有挑战性。SnO 2是典型的半导体金属氧化物，具有高反应活性和稳定的化学性质，是全面提高传感性能的理想掺杂剂。首次研究了Ti 3C 2 Tx和SnO 2作为杂化功能材料对具有微毒性的气体绝缘介质氟化腈（C4 F7 N）的室温检测。Ti 3C 2 Tx-SnO 2纳米复合材料传感器具有上级灵敏度、高选择性、强抗干扰能力和优异的长期稳定性。这种增强的传感机理归因于SnO 2和Ti 3C 2 Tx之间的协同效应以及SnO 2对C4 F7 N的强吸附能力，类似于鱼的诱饵。我们还建立了一个实际的泄漏场景，并证明了Ti 3C 2 Tx-SnO 2传感器的可行性，以提供实际工程应用的分布规律与高传感效率。该研究结果可拓展Ti 3C 2 Tx MXene的气敏应用，为C4 F7 N基环保气体绝缘设备的维护提供参考。
Ti3C2Tx MXene is an emerging two-dimensional transition-metal carbide/nitride with excellent properties of large specific surface and high carrier mobility for room-temperature gas sensing. However, achieving high sensitivity and long-term stability of pristine Ti3C2Tx-based gas sensors remains challenging. SnO2 is a typical semiconductor metal oxide with high reaction activity and stable chemical properties ideal for a dopant that can comprehensively improve sensing performance. Ti3C2Tx and SnO2 are investigated for the first time in this study as functional materials for hybridization and room-temperature detection of the gas insulating medium fluorinated nitrile (C4F7N) with microtoxicity. A Ti3C2Tx-SnO2 nanocomposite sensor exhibits superior sensitivity, high selectivity, strong anti-interference ability, and excellent long-term stability. The enhanced sensing mechanism is ascribed to the synergistic effect between SnO2 and Ti3C2Tx and the strong adsorption ability of SnO2 to C4F7N similar to bait for fish. We also established an actual leakage scene and demonstrated the feasibility of the Ti3C2Tx-SnO2 sensor to provide distribution rules with high sensing efficiency for actual engineering applications. The results of this work can expand the gas sensing application of Ti3C2Tx MXene and provide a reference for maintaining C4F7N-based eco-friendly gas-insulated equipment.