Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst
The detrimental growth of water pollutants such as heavy metal ions (HMI) has become a life-threatening problem in the modern era. Therefore, developing more efficient strategies to detect such compounds requires increased attention. In this study, we designed a dual-mode assay for electrochemical s...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/180232 |
| _version_ | 1811692132765794304 |
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| author | Nataraj, Nandini Dash, Pranjyan Sakthivel, Rajalakshmi Lin, Yu-Chien Fang, Hsu-Wei Chung, Ren-Jei |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Nataraj, Nandini Dash, Pranjyan Sakthivel, Rajalakshmi Lin, Yu-Chien Fang, Hsu-Wei Chung, Ren-Jei |
| author_sort | Nataraj, Nandini |
| collection | NTU |
| description | The detrimental growth of water pollutants such as heavy metal ions (HMI) has become a life-threatening problem in the modern era. Therefore, developing more efficient strategies to detect such compounds requires increased attention. In this study, we designed a dual-mode assay for electrochemical sensing and naked-eye (colorimetric) detection of HMI using the peroxidase mimic activity of the developed nanozyme. The nanozyme of choice, which possesses both the necessary electrochemical properties and the ability to be oxidized with 3,3′,5,5′-tetramethylbenzidine (TMB), was determined and studied. Flower-like nickel selenide (NiSe) was integrated with a zeolitic imidazole framework (ZIF-67) to enable its wider applicability. HMI detection with a wide linear range of about 0.029–764.8 µM (Cd2+), 0.299–355.5 µM (Pb2+), and 0.29–153.2 µM (Hg2+) with NiSe/ZIF showed excellent electrochemical performances, while the linear range in colorimetric detection was about 0.199–429.9 µM (Cd2+), 0.199–90.8 µM (Pb2+), and 0.149–276.8 µM (Hg2+). The limit of detection for the simultaneous detection was 5.2 nM (Cd2+), 4.7 nM (Pb2+), and 6.2 nM (Hg2+) for electrochemical sensing. The LOD obtained for the colorimetric analyses were 0.043 µM (Cd2+), 0.050 µM (Pb2+), and 0.091 µM (Hg2+). The real sample analysis of the environmental water samples showed good results for trace heavy metal ions. Thus, the developed NiSe/ZIF catalyst is more effective with dual detection and can be used for portable analysis of several targets with further modifications. |
| first_indexed | 2024-10-01T06:30:56Z |
| format | Journal Article |
| id | ntu-10356/180232 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:30:56Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1802322024-09-25T01:55:54Z Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst Nataraj, Nandini Dash, Pranjyan Sakthivel, Rajalakshmi Lin, Yu-Chien Fang, Hsu-Wei Chung, Ren-Jei School of Materials Science and Engineering Engineering Heavy metal ions Electrochemical detection The detrimental growth of water pollutants such as heavy metal ions (HMI) has become a life-threatening problem in the modern era. Therefore, developing more efficient strategies to detect such compounds requires increased attention. In this study, we designed a dual-mode assay for electrochemical sensing and naked-eye (colorimetric) detection of HMI using the peroxidase mimic activity of the developed nanozyme. The nanozyme of choice, which possesses both the necessary electrochemical properties and the ability to be oxidized with 3,3′,5,5′-tetramethylbenzidine (TMB), was determined and studied. Flower-like nickel selenide (NiSe) was integrated with a zeolitic imidazole framework (ZIF-67) to enable its wider applicability. HMI detection with a wide linear range of about 0.029–764.8 µM (Cd2+), 0.299–355.5 µM (Pb2+), and 0.29–153.2 µM (Hg2+) with NiSe/ZIF showed excellent electrochemical performances, while the linear range in colorimetric detection was about 0.199–429.9 µM (Cd2+), 0.199–90.8 µM (Pb2+), and 0.149–276.8 µM (Hg2+). The limit of detection for the simultaneous detection was 5.2 nM (Cd2+), 4.7 nM (Pb2+), and 6.2 nM (Hg2+) for electrochemical sensing. The LOD obtained for the colorimetric analyses were 0.043 µM (Cd2+), 0.050 µM (Pb2+), and 0.091 µM (Hg2+). The real sample analysis of the environmental water samples showed good results for trace heavy metal ions. Thus, the developed NiSe/ZIF catalyst is more effective with dual detection and can be used for portable analysis of several targets with further modifications. The authors are grateful for the financial support of this research from the Ministry of Education of Taiwan; and the National Science and Technology Council of Taiwan (MOST 109-2222-E-027-004; MOST 111- 2221-E-027-102; NSTC 112-2221-E-027-013-MY3). 2024-09-25T01:55:54Z 2024-09-25T01:55:54Z 2024 Journal Article Nataraj, N., Dash, P., Sakthivel, R., Lin, Y., Fang, H. & Chung, R. (2024). Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst. Chemical Engineering Journal, 485, 149965-. https://dx.doi.org/10.1016/j.cej.2024.149965 1385-8947 https://hdl.handle.net/10356/180232 10.1016/j.cej.2024.149965 2-s2.0-85186630050 485 149965 en Chemical Engineering Journal © 2024 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering Heavy metal ions Electrochemical detection Nataraj, Nandini Dash, Pranjyan Sakthivel, Rajalakshmi Lin, Yu-Chien Fang, Hsu-Wei Chung, Ren-Jei Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst |
| title | Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst |
| title_full | Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst |
| title_fullStr | Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst |
| title_full_unstemmed | Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst |
| title_short | Simultaneous electrochemical and colorimetric detection of tri-heavy metal ions in environmental water samples employing 3D-MOF/nickel selenide as a synergistic catalyst |
| title_sort | simultaneous electrochemical and colorimetric detection of tri heavy metal ions in environmental water samples employing 3d mof nickel selenide as a synergistic catalyst |
| topic | Engineering Heavy metal ions Electrochemical detection |
| url | https://hdl.handle.net/10356/180232 |
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