A facile method for preparation of porous nitrogen-doped Ti3C2TxMXene for highly responsive acetone detection at high temperature

Zijing Wang, Fen Wang, Angga Hermawan, Jianfeng Zhu, Shu Yin

研究成果: Article査読

抄録

Porous nitrogen-doped Ti3C2Tx 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 Ti3C2Tx nanosheets, some defects generate around the doped nitrogen atoms, which can greatly improve the surface hydrophilicity and adsorption capacity of Ti3C2Tx Mxene nanosheets. It resulted in the enhanced gas sensitivity, achieving a response value of about 36 (δR/Ra) × 100%) and excellent recovery time (9s) at 150°C. Compared with the pure Ti3C2Tx-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.

本文言語English
論文番号2151043
ジャーナルFunctional Materials Letters
14
8
DOI
出版ステータスPublished - 2021 11 1

ASJC Scopus subject areas

  • 材料科学(全般)

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