期刊
SENSORS
卷 22, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/s22103860
关键词
gas sensors; density functional theory; 2D materials; carbon dioxide
资金
- Science and Technology Support Plan Project of Guizhou Province [2384, [2021] General 171]
This study proposes the use of an MoS2-GeSe monolayer to enhance the sensitivity and thermal stability of traditional nanomaterial gas sensors, providing a potential solution for recycling sensors in agriculture and monitoring crop growth.
The reasonable allocation and control of CO2 concentration in a greenhouse are very important for the optimal growth of crops. In this study, based on density functional theory (DFT), an MoS2-GeSe monolayer was proposed to unravel the issues of the lower selectivity, poorer sensitivity and non-recyclability of traditional nanomaterial gas sensors. The incorporation of MoS2 units greatly enhanced the sensitivity of the pure GeSe monolayer to CO2 and the high binding energy also demonstrated the thermal stability of the doped structures. The ideal adsorption energy, charge transfer and recovery time ensured that the MoS2-GeSe monolayer had a good adsorption and desorption ability. This paper aimed to solve the matter of recycling sensors within agriculture. This research could provide the theoretical basis for the establishment of a potentially new generation of gas sensors for the monitoring of crop growth.
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