增强的光谱电化学与损耗模式共振光纤传感器
Monika Janik1, Katarzyna Lechowicz2, Emil Pituła2
1Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662, Warsaw, Poland. monika.janik@pw.edu.pl.
Scientific reports
|September 19, 2023
概括
本研究引入了一种使用新型光纤传感器的增强光谱电化学 (SEC) 方法. 它可以同时对电极进行电化学和光学监测,以获得更深入的分析见解.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 光学物理学 光学物理学
背景情况:
- 光谱电化学 (SEC) 测量结合了电化学 (EC) 和光学分析来研究化学反应.
- 目前的SEC方法主要集中在反应产品的光学分析上,电极表面的直接监测有限.
- 提高SEC需要整合来自电极本身的实时光学反.
研究的目的:
- 开发和验证一种新的SEC方法,包括对电极表面的同时光学监测.
- 为了实现双重功能,使用涂有氧化 (ITO) 的聚合物覆盖的光纤光学传感器.
- 为了提高表面传感能力,研究ITO中的损失模式共振 (LMR) 现象.
主要方法:
- 聚合物覆盖的二氧化多模光纤传感器的制造,具有ITO涂层.
- 实施一个允许同时EC读数和光学频谱分析 (包括LMR) 的设置.
- 使用氧化还原探针 (铁化物,甲蓝) 进行循环电压测量 (CV) 和时测量 (CA) 实验.
主要成果:
- 开发的传感器成功地提供了三个不同的查询读数:EC,标准SEC光学光谱和LMR光谱.
- 在LMR分析中,有效地反映了传感器/电极表面的状态.
- 在CA实验中对同时EC和光学数据的交叉相关性分析提供了全面的过程理解.
结论:
- 提议的增强SEC方法在传统技术上提供了显著的进步.
- 同时对电极表面的光学监测提供了标准SEC的补充信息.
- 这种综合方法提高了对电化学过程和分析物的特征的理解.
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