室温紫外光照射下zno - sno4 - sno2纳米复合材料对三乙胺（TEA）的选择性传感

IF 4.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-05-06 DOI:10.1016/j.sna.2025.116655

Fatemeh Bagheri, Hamid Haratizadeh, Sahar Afzali

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引用次数: 0

摘要

传统的化学电阻式气体传感器在选择性方面经常表现出局限性，并且需要在高温下操作。通过利用纳米复合材料和采用紫外线活化而不是热活化，可以解决上述与传统气体传感器相关的挑战。在本研究中，开发了一种基于紫外光活化Zn2SnO4-SnO2的气体传感器。利用x射线衍射、场发射扫描电镜、x射线光谱学、拉曼光谱和光致发光等多种分析技术对合成的Zn2SnO4-SnO2复合材料进行了表征。所制备的Zn2SnO4-SnO2传感器在环境温度条件下对低浓度（1-75 ppm）的三乙胺进行了有效检测。气敏性能评估显示，与其他挥发性有机化合物（包括乙醇、甲醇、丙酮、氨、异丙醇和甲苯）相比，三乙胺具有出色的选择性，其响应高10-140倍。当暴露于75 ppm的三乙胺时，传感器的响应/恢复时间为4/20 s。该传感器的线性校准曲线、稳定性和可重复性进一步证实了其在实际应用中的应用潜力。

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Selective sensing of triethylamine (TEA) using Zn2SnO4-SnO2 nanocomposites under UV irradiation at room temperature

Conventional chemoresistive gas sensors frequently demonstrate limitations in terms of selectivity and require operation at elevated temperatures. Addressing these aforementioned challenges associated with conventional gas sensors can be achieved by utilizing nanocomposite materials and employing ultraviolet activation rather than thermal activation. In this study, a gas sensor based on UV-activated Zn₂SnO₄-SnO₂ has been developed. The synthesized Zn₂SnO₄-SnO₂ composite was characterized using a variety of analytical techniques, including X-ray diffraction, field emission scanning electron microscopy, X-ray spectroscopy, Raman spectroscopy, and photoluminescence. The fabricated Zn₂SnO₄-SnO₂ sensor exhibited its capability for effective triethylamine detection at low concentrations (1–75 ppm) at ambient temperature conditions. Gas-sensing performance evaluations revealed exceptional selectivity for triethylamine, with a response 10–140 times greater compared to the responses to other volatile organic compounds, including ethanol, methanol, acetone, ammonia, isopropyl alcohol, and toluene. The sensor demonstrated a fast response/recovery time of 4/20 s when exposed to 75 ppm of triethylamine. The sensor's linear calibration curve, stability, and repeatability further substantiate its potential for utilization in real-world applications.

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...