E3S Web Conf.
Volume 213, 20202nd International Conference on Applied Chemistry and Industrial Catalysis (ACIC 2020)
|Number of page(s)||4|
|Section||Energy Mining Research and Composite Material Performance Analysis|
|Published online||01 December 2020|
The Tribond Bridged Bipyridine Complex-based In-fiber Interferometric Sensor design for Cu2+ Detection
College of Information and Electrical Engineer, Shandong University of Science and Technology, Shandong Qingdao 266590, China
We report a real-time, lightweight sensor based on in-fiber MZ interferometer coating bipyridine complex L[4-methyl-2, 6-bis(pyridine-3-ylethynyl)aniline](L-ligand) in situ determination of free copper ion at micromolar levels. The sensor is made by fusing a section of thin-core fiber(TCF) in the middle of singlemode fiber(SMF). The L-ligand material is attached to the sensing surface of thin-core fiber to bind free copper ions in liquid environment with high affinity and selectivity. Investigation was carried out that the performance of the sensor is significantly improved with different length. The sensitivity of Cu2+ detection can reach 0.0573 nm/μM (nanometer per micromolar) in linear range of 0μM~25μM and the detection limit is 0.8726μM. This is significantly lower than the allowable level of drinking water.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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