光激活室温表面声波H2S传感器基于Bi2S3纳米丝带
Chong Li1, Sami Ramadan2, Hao Kan3
1School of Electronic Engineering, Huainan Normal University, Huainan 232038, China.
Sensors (Basel, Switzerland)
|February 26, 2025
概括
这项研究开发了一个室温硫化 (H2S) 传感器,使用硫化纳米带. 基替代和黄色光激活显著提高了物联网应用中的传感器性能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学传感器 化学传感器
- 纳米技术 纳米技术
背景情况:
- 物联网 (IoT) 需要先进的无线,被动,稳定的室温气体传感器.
- 硫化 (H2S) 检测对于环境监测和工业安全至关重要.
- 表面声波 (SAW) 传感器提供了敏感气体检测的潜力.
研究的目的:
- 使用Bi2S3纳米带设计和准备一个室温SAW H2S传感器.
- 为了研究无机盐溶液连接物替代对传感器性能的影响.
- 评估可见光激活对传感器灵敏度和选择性的影响.
主要方法:
- 为SAW传感器制造Bi2S3纳米带的纳米网薄膜.
- 使用各种无机盐溶液 (例如,Cu(NO3) 2) 来替代Bi2S3膜的联体.
- 在不同的条件下测试传感器对H2S的响应:黑暗和可见光 (特别是黄色光).
主要成果:
- 与未经处理的传感器相比,连接物替代改善了传感器对H2S的响应,Cu(NO3) 2处理为10 ppm H2S产生了203%的响应增加.
- 黄色光激活显著提高了传感器性能,与在黑暗中操作相比,对10 ppm H2S的响应大约翻了一番.
- 优化的传感器表现出高灵敏度,优秀的选择性,快速响应,以及在室温下低检测极限.
结论:
- 干替代和可见光激活是提高室温SAW H2S传感器性能的有效策略.
- 开发的Bi2S3基于纳米丝带的SAW传感器显示了在物联网应用中可靠的H2S检测的希望.
- 这项工作提出了一种新的方法,用于提高在室温下运行的气体传感器的效率.
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