基于Li/Al-LDHs改性光纤耦合器的Li+浓度检测

IF 2.6 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Optical Fiber Technology Pub Date : 2025-03-03 DOI:10.1016/j.yofte.2025.104187

Xuesong Zhang , Yue Feng , Weixiang Yuan , Haodong Wu , Tao Shen

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引用次数: 0

摘要

超低浓度锂离子（Li+）的检测对于保护人类健康和保护生态环境具有至关重要的意义。提出了一种基于锂/铝层状双氢氧化物（Li/Al-LDHs）改性光学微光纤耦合器（OMC）的光纤传感器。首先，通过仿真分析确定OMC的最优直径，优化传感器参数；其次，采用官能团功能化来促进Li/Al-LDHs与光纤表面的牢固结合。最后，通过实验手段验证了传感器检测低浓度Li+的有效性。结果表明，该传感器在1 ~ 10 nm范围内的最大检测灵敏度为334.222 nm/μM，检出限（LOD）为1.272 nm，线性良好（R2 = 0.986）。此外，该传感器表现出优异的稳定性、选择性和响应时间，表明其在水环境中Li+浓度检测中的应用潜力。

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Li+ concentration detection based on Li/Al-LDHs modified optical microfiber coupler

The detection of ultra-low concentrations of lithium ions (Li⁺) is of paramount importance for protecting human health and preserving the ecological environment. This paper proposes a fiber-optic sensor based on lithium/aluminum layered double hydroxides (Li/Al-LDHs) modified optical microfiber coupler (OMC). Firstly, the optimal diameter of the OMC is determined through simulation analysis to optimize the sensor parameters. Secondly, functional group functionalization is employed to facilitate a robust binding of the Li/Al-LDHs to the surface of the optical fiber. Lastly, the efficacy of the sensor in detecting low concentrations of Li⁺ was validated through experimental means. The results demonstrated that the sensor exhibited a maximum detection sensitivity of 334.222 nm/μM and a limit of detection (LOD) of 1.272 nM within the range of 1–10 nM, exhibiting good linearity (R² = 0.986). Furthermore, the sensor displayed excellent stability, selectivity and response time, indicating its potential for application in the detection of Li⁺ concentration in aqueous environments.

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来源期刊

Optical Fiber Technology 工程技术-电信学

CiteScore

4.80

自引率

11.10%

发文量

327

审稿时长

63 days

期刊介绍： Innovations in optical fiber technology are revolutionizing world communications. Newly developed fiber amplifiers allow for direct transmission of high-speed signals over transcontinental distances without the need for electronic regeneration. Optical fibers find new applications in data processing. The impact of fiber materials, devices, and systems on communications in the coming decades will create an abundance of primary literature and the need for up-to-date reviews. Optical Fiber Technology: Materials, Devices, and Systems is a new cutting-edge journal designed to fill a need in this rapidly evolving field for speedy publication of regular length papers. Both theoretical and experimental papers on fiber materials, devices, and system performance evaluation and measurements are eligible, with emphasis on practical applications.