Optical Fiber SPR Sensor With Surface Ion Imprinting for Highly Sensitive and Highly Selective Ni2+ Detection

被引：19
|
作者：
Ma, Yao [1 ,2 ]
Zheng, Wanlu [1 ,2 ]
Zhang, Ya-Nan [1 ,2 ]
Li, Xuegang [1 ,2 ]
Zhao, Yong [3 ,4 ]
机构：
[1] Northeastern Univ, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Peoples R China
[2] Northeastern Univ, Coll Informat Sci & Engn, Shenyang 110819, Peoples R China
[3] Northeastern Univ, State Key Lab Synthet Automat Proc Ind, Shenyang 110819, Peoples R China
[4] Hebei Key Lab Micronano Precis Opt Sensing & Meaf, Qinhuangdao 066004, Hebei, Peoples R China
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2021年 / 70卷
基金：
中国国家自然科学基金;
关键词：
Chitosan (CS); Ni2+ detection; optical fiber sensor; surface ion imprinting; surface plasmon resonance (SPR); PLASMON RESONANCE TECHNIQUE; ADSORPTION; CHITOSAN; MEMBRANE;
D O I：
10.1109/TIM.2021.3107052
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A reflective optical fiber nickel ion (Ni2+) sensor based on surface plasmon resonance (SPR) and surface ion imprinting was proposed and demonstrated. The sensor is made of multimode optical fiber with a core diameter of 600 mu m and coated with a gold film for an exciting SPR effect. To realize highly sensitive and highly selective detection of Ni2+, graphene oxide (GO) and Ni2+-imprinted Chitosan (IP-CS) are subsequently combined on the sensor surface. The GO can not only act as the intermediate binder between the Au film and the CS but also increase the sensitivity of the sensor. The Ni2+ holes on the IP-CS can realize the specific capture of Ni2+. The experimental results show that the sensitivity of the sensor to Ni2+ is 5.220 nm/[lg(mg/L)] with a limit of detection of 2.393x10(-3) mg/L, and the selectivity of the sensor is significantly improved after imprinting. Besides, the sensor has good stability and repeatability, and fast responsiveness.
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页数：6
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