用rGO-纳米复合材料涂层的eFBG传感器检测不同pH值范围的高灵敏度检测
Applied optics
|September 14, 2023
概括
一种新的减少氧化石墨烯 (rGO) 涂层蚀刻纤维布拉格格 (eFBG) pH传感器在广泛的pH范围内显示出高灵敏度. 这种创新型传感器为实时pH监测提供了具有成本效益和可重复使用的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 传感器技术 传感器技术
背景情况:
- 纤维布拉格格 (FBGs) 是广泛使用的光学传感器.
- 开发高灵敏性和成本效益的pH传感器对于各种应用至关重要.
- 减少的石墨烯氧化物 (rGO) 具有独特的光学和电气特性,适合传感.
研究的目的:
- 开发和描述一种新型的pH传感器,使用减少氧化石墨烯 (rGO) 涂层蚀刻纤维布拉格格 (eFBG).
- 为了评估拟议的rGO-eFBG传感器的灵敏度和运行范围.
- 探索这个传感器在实时,远程和经济有效的pH监测方面的潜力.
主要方法:
- 在eFBG的未覆盖区域上涂上rGO的纳米复合材料层,以创建传感探头.
- 使用UV-VIS-NIR光谱,XRD和FESEM进行rGO材料的表征.
- 测试传感器对从pH 2到pH 12的pH样本的响应,并监测共振峰值转移.
主要成果:
- rGO-eFBG传感器具有很高的灵敏度,在pH12下记录的最大灵敏度为0.232nm/pH.
- 传感器有效地检测到由于rGO光学带间隙的变化而导致的最小度变化.
- 布拉格波长在反射频谱中的变化与水溶液pH的变化直接相关.
- 传感器的性能受到环境温度波动 (19-21°C) 的最小影响.
结论:
- 开发的rGO-eFBG传感器非常灵敏,有效地测量广泛的pH值.
- 传感器提供诸如遥感能力,快速响应时间,小尺寸,低成本和可重复使用等优势.
- 这项技术有望用于先进的实时pH监测应用.
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