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http://hdl.handle.net/2445/199325
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DC Field | Value | Language |
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dc.contributor.author | Tapia, María A. | - |
dc.contributor.author | Pérez Ràfols, Clara | - |
dc.contributor.author | Oliveira, Filipa M. | - |
dc.contributor.author | Gusmão, Rui | - |
dc.contributor.author | Serrano i Plana, Núria | - |
dc.contributor.author | Sofer, Zdenek | - |
dc.contributor.author | Díaz Cruz, José Manuel | - |
dc.date.accessioned | 2023-06-15T17:48:28Z | - |
dc.date.available | 2023-06-15T17:48:28Z | - |
dc.date.issued | 2023-04-01 | - |
dc.identifier.issn | 2227-9040 | - |
dc.identifier.uri | http://hdl.handle.net/2445/199325 | - |
dc.description.abstract | A two-dimensional (2D) Sb-modified screen-printed carbon nanofibers electrode (2D Sbexf-SPCNFE) was developed to improve the stripping voltammetric determination of Cd(II) and Pb(II), taking advantage of the synergistic effect between the two nanomaterials. The surface morphology of the 2D Sbexf-SPCNFE was investigated by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Raman spectroscopy. The analytical performance of 2D Sbexf-SPCNFE was compared to those presented by screen-printed carbon electrodes modified with 2D Sbexf (2D Sbexf-SPCE) and the corresponding bare electrodes: screen-printed carbon nanofibers electrode (SPCNFEbare) and screen-printed carbon electrode (SPCEbare). After optimizing the experimental conditions, the 2D Sbexf-SPCNFE exhibited much better analytical parameters compared to the other assessed sensors. Analysis in 0.01 mol L−1 HCl (pH = 2) using 2D Sbexf-SPCNFE showed excellent linear behavior in the concentration range of 2.9 to 85.0 µg L−1 and 0.3 to 82.0 µg L−1 for Cd(II) and Pb(II), respectively. The limits of detection after 240 s deposition time for Cd(II) and Pb(II) were 0.9 and 0.1 µg L−1, and sensitivities between 1.5 and 3 times higher than those displayed by SPCEbare, SPCNFEbare, and 2D Sbexf-SPCE were obtained. Finally, the 2D Sbexf-SPCNFE was successfully applied to the determination of Cd(II) and Pb(II) traces in a certified estuarine water sample. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | MDPI | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.3390/chemosensors11040219 | - |
dc.relation.ispartof | Chemosensors, 2023, vol. 11, num. 219 | - |
dc.relation.uri | https://doi.org/10.3390/chemosensors11040219 | - |
dc.rights | cc-by (c) Tapia, María A. et al., 2023 | - |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | - |
dc.source | Articles publicats en revistes (Enginyeria Química i Química Analítica) | - |
dc.subject.classification | Voltametria | - |
dc.subject.classification | Ions metàl·lics | - |
dc.subject.classification | Anàlisi electroquímica | - |
dc.subject.other | Voltammetry | - |
dc.subject.other | Metal ions | - |
dc.subject.other | Electrochemical analysis | - |
dc.title | Antimonene-modified screen-printed carbon nanofibers electrode for enhanced electroanalytical response of metal ions. | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 733282 | - |
dc.date.updated | 2023-06-15T17:48:28Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Enginyeria Química i Química Analítica) |
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733282.pdf | 3 MB | Adobe PDF | View/Open |
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