X射线光电子能谱
纳米颗粒
材料科学
检出限
氨
分析化学(期刊)
核化学
纳米技术
物理
化学
有机化学
核磁共振
色谱法
作者
Yating Zhang,Hao Zhang,Jianhua Zhang,Jingyu Guo,Dongzhi Zhang
出处
期刊:IEEE Sensors Journal
[Institute of Electrical and Electronics Engineers]
日期:2022-08-01
卷期号:22 (15): 14736-14742
被引量:2
标识
DOI:10.1109/jsen.2022.3179725
摘要
In this paper, an ammonia sensor based on BiFeO 3 /WO 3 composites is presented. BiFeO 3 nanoplates and WO 3 nanoparticles were prepared by a simple hydrothermal method. The composites were observed by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The gas-sensitive properties of the composites and the single material were systematically compared. The experimental results show that the BiFeO 3 /WO 3 composites sensor has an excellent response towards ammonia with good long-term stability, short response/recovery time and low detection limit. The gas-sensitive mechanism is further explained that the possible reason for the enhanced gas-sensitive performance is the formation of n-n heterojunctions between BiFeO 3 nanoplates and WO 3 nanoparticles. The BiFeO 3 /WO 3 composites were shown to be a potential room temperature ammonia sensing material.
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