Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater
The authors describe a liquid crystal polymer (LCP) based bismuth (Bi) film electrode that can be directly deployed for in-situ determination of zinc(II) ions. The use of an LCP warrants improved operational reliability, high durability, and flexibility of the sensor, allowing it to be mounted on an...
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2017
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/86693 http://hdl.handle.net/10220/44165 |
| _version_ | 1826120330219880448 |
|---|---|
| author | Wang, Nan Kanhere, Elgar Kottapalli, Ajay Giri Prakash Miao, Jianmin Triantafyllou, Michael S. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Wang, Nan Kanhere, Elgar Kottapalli, Ajay Giri Prakash Miao, Jianmin Triantafyllou, Michael S. |
| author_sort | Wang, Nan |
| collection | NTU |
| description | The authors describe a liquid crystal polymer (LCP) based bismuth (Bi) film electrode that can be directly deployed for in-situ determination of zinc(II) ions. The use of an LCP warrants improved operational reliability, high durability, and flexibility of the sensor, allowing it to be mounted on any flat or shaped surface. Square wave anodic stripping voltammetry shows the sensor to be able to detect Zn(II) (−1.64 V vs. thin-film Ag/AgCl reference electrode) in concentrations as low as 1.22 nM at a deposition time of 180 s. Other figures of merit include (a) an analytical sensitivity of 1.55 nA∙nM−1∙mm−2, (b) a linear detection range extending from 4.59 to 1071 nM, (c) a repeatability with a relative standard deviation of 3.35% (for n = 10), (d) a reproducibility with a relative standard deviation of 1.64% (for n = 6). Real-time applicability of the sensor for in-situ detection was demonstrated by determination of Zn(II) in seawater. In an extension of the method, a flexible sensor array consisting of four LCP-based sensors was attached to the hull of an autonomous kayak, which was remotely operated. The response of the sensor array indicated a clear trace of Zn(II) concentrations in seawater. This was confirmed by ICP-MS analysis. The results suggest the potential usage of the flexible LCP electrochemical sensor for in-situ monitoring. |
| first_indexed | 2024-10-01T05:14:25Z |
| format | Journal Article |
| id | ntu-10356/86693 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:14:25Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/866932023-03-04T17:16:14Z Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater Wang, Nan Kanhere, Elgar Kottapalli, Ajay Giri Prakash Miao, Jianmin Triantafyllou, Michael S. School of Mechanical and Aerospace Engineering Microelectromechanical Systems Bismuth Film Electrode The authors describe a liquid crystal polymer (LCP) based bismuth (Bi) film electrode that can be directly deployed for in-situ determination of zinc(II) ions. The use of an LCP warrants improved operational reliability, high durability, and flexibility of the sensor, allowing it to be mounted on any flat or shaped surface. Square wave anodic stripping voltammetry shows the sensor to be able to detect Zn(II) (−1.64 V vs. thin-film Ag/AgCl reference electrode) in concentrations as low as 1.22 nM at a deposition time of 180 s. Other figures of merit include (a) an analytical sensitivity of 1.55 nA∙nM−1∙mm−2, (b) a linear detection range extending from 4.59 to 1071 nM, (c) a repeatability with a relative standard deviation of 3.35% (for n = 10), (d) a reproducibility with a relative standard deviation of 1.64% (for n = 6). Real-time applicability of the sensor for in-situ detection was demonstrated by determination of Zn(II) in seawater. In an extension of the method, a flexible sensor array consisting of four LCP-based sensors was attached to the hull of an autonomous kayak, which was remotely operated. The response of the sensor array indicated a clear trace of Zn(II) concentrations in seawater. This was confirmed by ICP-MS analysis. The results suggest the potential usage of the flexible LCP electrochemical sensor for in-situ monitoring. Accepted version 2017-12-20T04:12:28Z 2019-12-06T16:27:29Z 2017-12-20T04:12:28Z 2019-12-06T16:27:29Z 2017 Journal Article Wang, N., Kanhere, E., Kottapalli, A. G. P., Miao, J., & Triantafyllou, M. S. (2017). Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater. Microchimica Acta, 184(8), 3007-3015. 0026-3672 https://hdl.handle.net/10356/86693 http://hdl.handle.net/10220/44165 10.1007/s00604-017-2280-6 en Microchimica Acta © 2017 Springer-Verlag Wien. This is the author created version of a work that has been peer reviewed and accepted for publication by Microchimica Acta, Springer-Verlag Wien. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1007/s00604-017-2280-6]. 17 p. application/pdf |
| spellingShingle | Microelectromechanical Systems Bismuth Film Electrode Wang, Nan Kanhere, Elgar Kottapalli, Ajay Giri Prakash Miao, Jianmin Triantafyllou, Michael S. Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater |
| title | Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater |
| title_full | Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater |
| title_fullStr | Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater |
| title_full_unstemmed | Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater |
| title_short | Flexible liquid crystal polymer-based electrochemical sensor for in-situ detection of zinc(II) in seawater |
| title_sort | flexible liquid crystal polymer based electrochemical sensor for in situ detection of zinc ii in seawater |
| topic | Microelectromechanical Systems Bismuth Film Electrode |
| url | https://hdl.handle.net/10356/86693 http://hdl.handle.net/10220/44165 |
| work_keys_str_mv | AT wangnan flexibleliquidcrystalpolymerbasedelectrochemicalsensorforinsitudetectionofzinciiinseawater AT kanhereelgar flexibleliquidcrystalpolymerbasedelectrochemicalsensorforinsitudetectionofzinciiinseawater AT kottapalliajaygiriprakash flexibleliquidcrystalpolymerbasedelectrochemicalsensorforinsitudetectionofzinciiinseawater AT miaojianmin flexibleliquidcrystalpolymerbasedelectrochemicalsensorforinsitudetectionofzinciiinseawater AT triantafylloumichaels flexibleliquidcrystalpolymerbasedelectrochemicalsensorforinsitudetectionofzinciiinseawater |