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

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

Abstract

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.