石墨烯
材料科学
拉曼光谱
氧气
X射线光电子能谱
检出限
纳米复合材料
钙钛矿(结构)
二氧化碳
碳纤维
化学工程
温室气体
二氧化碳传感器
纳米技术
分析化学(期刊)
环境化学
化学
复合材料
复合数
光学
色谱法
生态学
有机化学
工程类
物理
生物
作者
Juan Casanova-Cháfer,Rocío García‐Aboal,Eduard Llobet,Pedro Atienzar
出处
期刊:ACS Sensors
[American Chemical Society]
日期:2024-02-06
卷期号:9 (2): 830-839
标识
DOI:10.1021/acssensors.3c02166
摘要
Carbon dioxide (CO2) is a major greenhouse gas responsible for global warming and climate change. The development of sensitive CO2 sensors is crucial for environmental and industrial applications. This paper presents a novel CO2 sensor based on perovskite nanocrystals immobilized on graphene and functionalized with oxygen plasma treatment. The impact of this post-treatment method was thoroughly investigated using various characterization techniques, including Raman spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The detection of CO2 at parts per million (ppm) levels demonstrated that the hybrids subjected to 5 min of oxygen plasma treatment exhibited a 3-fold improvement in sensing performance compared to untreated layers. Consequently, the CO2 sensing capability of the oxygen-treated samples showed a limit of detection and limit of quantification of 6.9 and 22.9 ppm, respectively. Furthermore, the influence of ambient moisture on the CO2 sensing performance was also evaluated, revealing a significant effect of oxygen plasma treatment.
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