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Tribond bridged bipyridine complex-functionalized all-fiber interferometric sensor for heavy metal ions in water

LIJUN LI1, CONGYING JIA1, PENG WANG2, XIAOLEI LIU1, TIANZONG XU1, JIAHUI HUANG1, QIAN MA1, YINMING LIU3,*

Affiliation

  1. College of Electric and Information Engineering, Shandong University of Science and Technology, Shandong Qingdao, 266590, China
  2. College of Chemical and Biological Engineering, Shandong University of Science and Technology, Shandong Qingdao, 266590, China
  3. Library, Shandong University of Science and Technology, Shandong Qingdao, 266590, China

Abstract

An optical fiber interferometric sensor for heavy metal ions in water is composed with tribond bridged bipyridine complex L coating Mach-Zehnder refractometer. Many heavy metals, include Zn2+, Mn2+, Co2+, Ni2+, Cd2+, and Cu2+ are investigated. The sensing performance of copper (II) ions is particularly studied. In 0 μM~25 μΜ, sensitivity of the sensor is 16.5 pm/μM with 99.6% linearity, and 3.03 μM limit of detection (LOD). In 25 μM ~250 μM, the sensitivity is 1.2 pm/μM with 41.67 μM LOD. The response time of the sensor is 101.97 s, 182.62 s, and 253.05 s of 20 μM, 200 μM, and 300 μM Cu2+ concentrations, respectively..

Keywords

Optical fiber interferometric sensor, Mach-Zehnder refractometer, Heavy metal ion, Coating, Water.

Submitted at: Sept. 28, 2021
Accepted at: Aug. 10, 2023

Citation

LIJUN LI, CONGYING JIA, PENG WANG, XIAOLEI LIU, TIANZONG XU, JIAHUI HUANG, QIAN MA, YINMING LIU, Tribond bridged bipyridine complex-functionalized all-fiber interferometric sensor for heavy metal ions in water, Journal of Optoelectronics and Advanced Materials Vol. 25, Iss. 7-8, pp. 387-394 (2023)