丙酮
材料科学
多孔性
吸附
杂原子
纳米技术
纳米材料
灵敏度(控制系统)
化学工程
分析化学(期刊)
兴奋剂
氮气
物理化学
有机化学
复合材料
光电子学
化学
电子工程
工程类
戒指(化学)
作者
Zijing Wang,Fen Wang,Angga Hermawan,Jianfeng Zhu,Shu Yin
标识
DOI:10.1142/s1793604721510437
摘要
Porous nitrogen-doped Ti 3 C 2 T[Formula: see text] MXene (N-TCT) with a three-dimensional network structure is synthesized via a simple sacrifice template method and then utilized as an acetone gas sensor. By introducing nitrogen atoms as heteroatoms into Ti 3 C 2 T[Formula: see text] nanosheets, some defects generate around the doped nitrogen atoms, which can greatly improve the surface hydrophilicity and adsorption capacity of Ti 3 C 2 T[Formula: see text] Mxene nanosheets. It resulted in the enhanced gas sensitivity, achieving a response value of about 36 ([Formula: see text]/[Formula: see text] × 100%) and excellent recovery time (9s) at 150[Formula: see text]C. Compared with the pure Ti 3 C 2 T[Formula: see text]-based gas sensor (381/92s), the response and recovery time are both obviously improved, and the response value increased by 3.5 times. The gas-sensing mechanism of the porous N-TCT is also discussed in detail. Based on the excellent gas sensitivity of porous N-TCT for highly responsive acetone detection at high temperatures, the strategy of nitrogen-doped two-dimensional nanomaterials can be extended to other nanomaterials to realize their potential applications.
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