Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocomposites
The high adsorption capacity of Fe3O4 and C3N4 for heavy metals and the amalgam effect of Bi2O3 were exploited using a Fe3O4/Bi2O3/C3N4-modified glassy carbon electrode (GCE) for the determination of Cd2+ and Pb2+. The electrochemical response performance of the Fe3O4/Bi2O3/C3N4/GCE was studied by s...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-08-01
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| Series: | Talanta Open |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666831920300242 |
| _version_ | 1818600055501750272 |
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| author | Yuwen Pu Yalin Wu Zhihui Yu Liping Lu Xiayan Wang |
| author_facet | Yuwen Pu Yalin Wu Zhihui Yu Liping Lu Xiayan Wang |
| author_sort | Yuwen Pu |
| collection | DOAJ |
| description | The high adsorption capacity of Fe3O4 and C3N4 for heavy metals and the amalgam effect of Bi2O3 were exploited using a Fe3O4/Bi2O3/C3N4-modified glassy carbon electrode (GCE) for the determination of Cd2+ and Pb2+. The electrochemical response performance of the Fe3O4/Bi2O3/C3N4/GCE was studied by square-wave anodic stripping voltammetry. The electrochemical conditions were optimized, including the pH of the buffer solution, content of Fe3O4/Bi2O3/C3N4 on the electrode surface, deposition potential and deposition time. Under optimum conditions, the Fe3O4/Bi2O3/C3N4/GCE sensor shows a linear response from 0.01 μmol/L to 3 μmol/L. The minimum detectable quantity for Cd2+ and Pb2+ are 3 × 10−9 mol/L and 1 × 10−9 mol/L, respectively. Interference studies were carried out. The sensitivity of the Fe3O4/Bi2O3/C3N4/GCE sensor to Cd2+and Pb2+ does not significantly change in the presence of coexisting heavy metal ions. The Fe3O4/Bi2O3/C3N4/GCE sensor exhibits good stability and repeatability. The Fe3O4/Bi2O3/C3N4/GCE sensor was used to detect Cd2+and Pb2+ in river water samples to demonstrate its real-world application. |
| first_indexed | 2024-12-16T12:29:24Z |
| format | Article |
| id | doaj.art-06353f3ae9cf4f4f9788620011e0326f |
| institution | Directory Open Access Journal |
| issn | 2666-8319 |
| language | English |
| last_indexed | 2024-12-16T12:29:24Z |
| publishDate | 2021-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Talanta Open |
| spelling | doaj.art-06353f3ae9cf4f4f9788620011e0326f2022-12-21T22:31:44ZengElsevierTalanta Open2666-83192021-08-013100024Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocompositesYuwen Pu0Yalin Wu1Zhihui Yu2Liping Lu3Xiayan Wang4Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China; Division of Environment and Life, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China; Division of Environment and Life, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China; Division of Environment and Life, Beijing University of Technology, Beijing 100124, ChinaKey Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China; Division of Environment and Life, Beijing University of Technology, Beijing 100124, China; Corresponding authors at: Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China.Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China; Division of Environment and Life, Beijing University of Technology, Beijing 100124, China; Corresponding authors at: Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology, Beijing 100124, China.The high adsorption capacity of Fe3O4 and C3N4 for heavy metals and the amalgam effect of Bi2O3 were exploited using a Fe3O4/Bi2O3/C3N4-modified glassy carbon electrode (GCE) for the determination of Cd2+ and Pb2+. The electrochemical response performance of the Fe3O4/Bi2O3/C3N4/GCE was studied by square-wave anodic stripping voltammetry. The electrochemical conditions were optimized, including the pH of the buffer solution, content of Fe3O4/Bi2O3/C3N4 on the electrode surface, deposition potential and deposition time. Under optimum conditions, the Fe3O4/Bi2O3/C3N4/GCE sensor shows a linear response from 0.01 μmol/L to 3 μmol/L. The minimum detectable quantity for Cd2+ and Pb2+ are 3 × 10−9 mol/L and 1 × 10−9 mol/L, respectively. Interference studies were carried out. The sensitivity of the Fe3O4/Bi2O3/C3N4/GCE sensor to Cd2+and Pb2+ does not significantly change in the presence of coexisting heavy metal ions. The Fe3O4/Bi2O3/C3N4/GCE sensor exhibits good stability and repeatability. The Fe3O4/Bi2O3/C3N4/GCE sensor was used to detect Cd2+and Pb2+ in river water samples to demonstrate its real-world application.http://www.sciencedirect.com/science/article/pii/S2666831920300242SensitivityAnti-interferenceFe3O4/Bi2O3/C3N4 nanocompositesCadmium(II)Lead(II)Stripping voltammetry |
| spellingShingle | Yuwen Pu Yalin Wu Zhihui Yu Liping Lu Xiayan Wang Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocomposites Talanta Open Sensitivity Anti-interference Fe3O4/Bi2O3/C3N4 nanocomposites Cadmium(II) Lead(II) Stripping voltammetry |
| title | Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocomposites |
| title_full | Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocomposites |
| title_fullStr | Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocomposites |
| title_full_unstemmed | Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocomposites |
| title_short | Simultaneous determination of Cd2+ and Pb2+ by an electrochemical sensor based on Fe3O4/Bi2O3/C3N4 nanocomposites |
| title_sort | simultaneous determination of cd2 and pb2 by an electrochemical sensor based on fe3o4 bi2o3 c3n4 nanocomposites |
| topic | Sensitivity Anti-interference Fe3O4/Bi2O3/C3N4 nanocomposites Cadmium(II) Lead(II) Stripping voltammetry |
| url | http://www.sciencedirect.com/science/article/pii/S2666831920300242 |
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