Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification
- Autores
- Gutierrez, Fabiana Andrea; Gonzalez Dominguez, Jose Miguel; Ansón Casaos, Alejandro; Hernández Ferrer, Javier; Rubianes, María Dolores; Martinez, Maria Teresa; Rivas, Gustavo Adolfo
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This work is focused on the development of an electrochemical sensor for the quantification of Cd(II) based on the use of glassy carbon electrodes (GCE) modified with a dispersion of single-walled carbon nanotubes (SWCNTs) covalently functionalized with cysteine (Cys). Cd(II) is preconcentrated at the electrode surface by complex formation at open circuit potential, followed by the reduction at −0.900 V and the final anodic voltammetric stripping in a 0.020 M acetate buffer solution pH 5.00. The functionalization of SWCNTs was performed through the reaction between the carboxylic groups of oxidized SWCNT and amino groups of S-triphenylmethyl cysteine using a coupling chemistry agent based on benzotriazol for the activation of carboxylic residues. There was a linear relationship between Cd oxidation signal and Cd(II) concentration between 1.0 and 300.0 μgL−1 Cd(II), with a sensitivity of (49 ± 2) × 10−3 μAμg−1L and a detection limit of 0.3 μgL−1. The reproducibility was 1.7% using the same dispersion and 3.8% using 3 different dispersions. The sensor was challenged with groundwater samples enriched with Cd(II) showing excellent recovery percentages and excellent agreement with the values obtained by ICP-MS.
Fil: Gutierrez, Fabiana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Gonzalez Dominguez, Jose Miguel. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España
Fil: Ansón Casaos, Alejandro. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España
Fil: Hernández Ferrer, Javier. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España
Fil: Rubianes, María Dolores. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Martinez, Maria Teresa. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España
Fil: Rivas, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina - Materia
-
Cadmium
Carbon Nanotubes
Complex Formation
Covalently Functionalization
Cysteine-Functionalized Swcnt
Electrochemical Sensor - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/63990
Ver los metadatos del registro completo
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Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantificationGutierrez, Fabiana AndreaGonzalez Dominguez, Jose MiguelAnsón Casaos, AlejandroHernández Ferrer, JavierRubianes, María DoloresMartinez, Maria TeresaRivas, Gustavo AdolfoCadmiumCarbon NanotubesComplex FormationCovalently FunctionalizationCysteine-Functionalized SwcntElectrochemical Sensorhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1This work is focused on the development of an electrochemical sensor for the quantification of Cd(II) based on the use of glassy carbon electrodes (GCE) modified with a dispersion of single-walled carbon nanotubes (SWCNTs) covalently functionalized with cysteine (Cys). Cd(II) is preconcentrated at the electrode surface by complex formation at open circuit potential, followed by the reduction at −0.900 V and the final anodic voltammetric stripping in a 0.020 M acetate buffer solution pH 5.00. The functionalization of SWCNTs was performed through the reaction between the carboxylic groups of oxidized SWCNT and amino groups of S-triphenylmethyl cysteine using a coupling chemistry agent based on benzotriazol for the activation of carboxylic residues. There was a linear relationship between Cd oxidation signal and Cd(II) concentration between 1.0 and 300.0 μgL−1 Cd(II), with a sensitivity of (49 ± 2) × 10−3 μAμg−1L and a detection limit of 0.3 μgL−1. The reproducibility was 1.7% using the same dispersion and 3.8% using 3 different dispersions. The sensor was challenged with groundwater samples enriched with Cd(II) showing excellent recovery percentages and excellent agreement with the values obtained by ICP-MS.Fil: Gutierrez, Fabiana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Gonzalez Dominguez, Jose Miguel. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; EspañaFil: Ansón Casaos, Alejandro. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; EspañaFil: Hernández Ferrer, Javier. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; EspañaFil: Rubianes, María Dolores. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Martinez, Maria Teresa. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; EspañaFil: Rivas, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaElsevier Science Sa2017-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63990Gutierrez, Fabiana Andrea; Gonzalez Dominguez, Jose Miguel; Ansón Casaos, Alejandro; Hernández Ferrer, Javier; Rubianes, María Dolores; et al.; Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification; Elsevier Science Sa; Sensors and Actuators B: Chemical; 249; 10-2017; 506-5140925-4005CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.snb.2017.04.026info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925400517306263info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:28:21Zoai:ri.conicet.gov.ar:11336/63990instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:28:22.096CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification |
| title |
Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification |
| spellingShingle |
Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification Gutierrez, Fabiana Andrea Cadmium Carbon Nanotubes Complex Formation Covalently Functionalization Cysteine-Functionalized Swcnt Electrochemical Sensor |
| title_short |
Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification |
| title_full |
Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification |
| title_fullStr |
Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification |
| title_full_unstemmed |
Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification |
| title_sort |
Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification |
| dc.creator.none.fl_str_mv |
Gutierrez, Fabiana Andrea Gonzalez Dominguez, Jose Miguel Ansón Casaos, Alejandro Hernández Ferrer, Javier Rubianes, María Dolores Martinez, Maria Teresa Rivas, Gustavo Adolfo |
| author |
Gutierrez, Fabiana Andrea |
| author_facet |
Gutierrez, Fabiana Andrea Gonzalez Dominguez, Jose Miguel Ansón Casaos, Alejandro Hernández Ferrer, Javier Rubianes, María Dolores Martinez, Maria Teresa Rivas, Gustavo Adolfo |
| author_role |
author |
| author2 |
Gonzalez Dominguez, Jose Miguel Ansón Casaos, Alejandro Hernández Ferrer, Javier Rubianes, María Dolores Martinez, Maria Teresa Rivas, Gustavo Adolfo |
| author2_role |
author author author author author author |
| dc.subject.none.fl_str_mv |
Cadmium Carbon Nanotubes Complex Formation Covalently Functionalization Cysteine-Functionalized Swcnt Electrochemical Sensor |
| topic |
Cadmium Carbon Nanotubes Complex Formation Covalently Functionalization Cysteine-Functionalized Swcnt Electrochemical Sensor |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
This work is focused on the development of an electrochemical sensor for the quantification of Cd(II) based on the use of glassy carbon electrodes (GCE) modified with a dispersion of single-walled carbon nanotubes (SWCNTs) covalently functionalized with cysteine (Cys). Cd(II) is preconcentrated at the electrode surface by complex formation at open circuit potential, followed by the reduction at −0.900 V and the final anodic voltammetric stripping in a 0.020 M acetate buffer solution pH 5.00. The functionalization of SWCNTs was performed through the reaction between the carboxylic groups of oxidized SWCNT and amino groups of S-triphenylmethyl cysteine using a coupling chemistry agent based on benzotriazol for the activation of carboxylic residues. There was a linear relationship between Cd oxidation signal and Cd(II) concentration between 1.0 and 300.0 μgL−1 Cd(II), with a sensitivity of (49 ± 2) × 10−3 μAμg−1L and a detection limit of 0.3 μgL−1. The reproducibility was 1.7% using the same dispersion and 3.8% using 3 different dispersions. The sensor was challenged with groundwater samples enriched with Cd(II) showing excellent recovery percentages and excellent agreement with the values obtained by ICP-MS. Fil: Gutierrez, Fabiana Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina Fil: Gonzalez Dominguez, Jose Miguel. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España Fil: Ansón Casaos, Alejandro. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España Fil: Hernández Ferrer, Javier. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España Fil: Rubianes, María Dolores. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina Fil: Martinez, Maria Teresa. Consejo Superior de Investigaciones Científicas. Instituto de Carboquímica; España Fil: Rivas, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina |
| description |
This work is focused on the development of an electrochemical sensor for the quantification of Cd(II) based on the use of glassy carbon electrodes (GCE) modified with a dispersion of single-walled carbon nanotubes (SWCNTs) covalently functionalized with cysteine (Cys). Cd(II) is preconcentrated at the electrode surface by complex formation at open circuit potential, followed by the reduction at −0.900 V and the final anodic voltammetric stripping in a 0.020 M acetate buffer solution pH 5.00. The functionalization of SWCNTs was performed through the reaction between the carboxylic groups of oxidized SWCNT and amino groups of S-triphenylmethyl cysteine using a coupling chemistry agent based on benzotriazol for the activation of carboxylic residues. There was a linear relationship between Cd oxidation signal and Cd(II) concentration between 1.0 and 300.0 μgL−1 Cd(II), with a sensitivity of (49 ± 2) × 10−3 μAμg−1L and a detection limit of 0.3 μgL−1. The reproducibility was 1.7% using the same dispersion and 3.8% using 3 different dispersions. The sensor was challenged with groundwater samples enriched with Cd(II) showing excellent recovery percentages and excellent agreement with the values obtained by ICP-MS. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017-10 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/63990 Gutierrez, Fabiana Andrea; Gonzalez Dominguez, Jose Miguel; Ansón Casaos, Alejandro; Hernández Ferrer, Javier; Rubianes, María Dolores; et al.; Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification; Elsevier Science Sa; Sensors and Actuators B: Chemical; 249; 10-2017; 506-514 0925-4005 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/63990 |
| identifier_str_mv |
Gutierrez, Fabiana Andrea; Gonzalez Dominguez, Jose Miguel; Ansón Casaos, Alejandro; Hernández Ferrer, Javier; Rubianes, María Dolores; et al.; Single-walled carbon nanotubes covalently functionalized with cysteine: A new alternative for the highly sensitive and selective Cd(II) quantification; Elsevier Science Sa; Sensors and Actuators B: Chemical; 249; 10-2017; 506-514 0925-4005 CONICET Digital CONICET |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/doi/10.1016/j.snb.2017.04.026 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925400517306263 |
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openAccess |
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Elsevier Science Sa |
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Elsevier Science Sa |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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