@article{Li2023, 
author = {Hong-Peng Li and Jie Wen and Shu-Mei Ding and Jia-Bao Ding and Zi-Hao Song and Chao Zhang and Zhen Ge and Xue Liu and Rui-Zheng Zhao and Feng-Chao Li},
title = {Synergistic coupling of 0D–2D heterostructure from ZnO and Ti3C2Tx MXene-derived TiO2 for boosted NO2 detection at room temperature},
year = {2023},
journal = {Nano Materials Science},
volume = {5},
number = {4},
pages = {421-428},
keywords = {MXene derivative, Heterostructure, Gas sensors, TiO2, ZnO},
url = {https://www.sciopen.com/article/10.1016/j.nanoms.2023.02.001},
doi = {10.1016/j.nanoms.2023.02.001},
abstract = {2D MXenes are highly attractive for fabricating high-precision gas sensors operated at room temperature (RT) due to their high surface-to-volume ratio. However, the limited selectivity and low sensitivity are still long-standing challenges for their further applications. Herein, the self-assembly of 0D–2D heterostructure for highly sensitive NO2 detection was achieved by integrating ZnO nanoparticles on Ti3C2Tx MXene-derived TiO2 nanosheets (designated as ZnO@M−TiO2). ZnO nanoparticles can not only act as spacers to prevent the restacking of M−TiO2 nanosheets and ensure effective transfer for gas molecules, but also enhance the sensitivity of the sensor the through trapping effect on electrons. Meanwhile, M−TiO2 nanosheets facilitate gas diffusion for rapid sensor response. Benefiting from the synergistic effect of individual components, the ZnO@M−TiO2 0D–2D heterostructure-based sensors revealed remarkable sensitivity and excellent selectivity to low concentration NO2 at RT. This work may facilitate the sensing application of MXene derivative and provide a new avenue for the development of high-performance gas sensors in safety assurance and environmental monitoring.}
}