Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine
- Autores
- Jalit, Yamile; Rodriguez, Marcela Cecilia; Rubianes, María Dolores; Bollo, Soledad; Rivas, Gustavo Adolfo
- Año de publicación
- 2008
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We report the analytical performance of glassy carbon electrodes (GCE) modified with a dispersion of multi-wall carbon nanotubes (MWCNT) in polylysine (Plys) (GCE/MWCNT-Plys). The resulting electrodes show an excellent electrocatalytic activity towards different bioanalytes like ascorbic acid, uric acid and hydrogen peroxide, with important decrease in their oxidation overvoltages. The dispersion of 1.0 mg/mL MWCNT in 1.0 mg/mL polylysine is highly stable, since after 2 weeks the sensitivity for hydrogen peroxide at GCE modified with this dispersion remained in a 90 % of the original value. The MWCNT-Plys layer immobilized on glassy carbon electrodes has been also used as a platform to build supramolecular architectures by self-assembling of polyelectrolytes based on the polycationic nature of the polylysine used to disperse the nanotubes. The self-assembling of glucose oxidase has allowed us to obtain a supramolecular multistructure for glucose biosensing. The influence of glucose oxidase concentration and adsorption time as well as the effect of using polylysine or MWCNT-Plys as polycationic layers for further adsorption of GOx is also evaluated.
Fil: Jalit, Yamile. 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: Rodriguez, Marcela Cecilia. 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: 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: Bollo, Soledad. Universidad de Chile.; Chile
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
-
CARBON NANOTUBES
CARBON NANOTUBES DISPERSION
CATALYSIS
ELECTROCHEMICAL SENSOR
ENZYMATIC BIOSENSOR
GLASSY CARBON
GLUCOSE BIOSENSOR
GLUCOSE OXIDASE
POLYLYSINE - 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:11336/113966
Ver los metadatos del registro completo
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Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysineJalit, YamileRodriguez, Marcela CeciliaRubianes, María DoloresBollo, SoledadRivas, Gustavo AdolfoCARBON NANOTUBESCARBON NANOTUBES DISPERSIONCATALYSISELECTROCHEMICAL SENSORENZYMATIC BIOSENSORGLASSY CARBONGLUCOSE BIOSENSORGLUCOSE OXIDASEPOLYLYSINEhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We report the analytical performance of glassy carbon electrodes (GCE) modified with a dispersion of multi-wall carbon nanotubes (MWCNT) in polylysine (Plys) (GCE/MWCNT-Plys). The resulting electrodes show an excellent electrocatalytic activity towards different bioanalytes like ascorbic acid, uric acid and hydrogen peroxide, with important decrease in their oxidation overvoltages. The dispersion of 1.0 mg/mL MWCNT in 1.0 mg/mL polylysine is highly stable, since after 2 weeks the sensitivity for hydrogen peroxide at GCE modified with this dispersion remained in a 90 % of the original value. The MWCNT-Plys layer immobilized on glassy carbon electrodes has been also used as a platform to build supramolecular architectures by self-assembling of polyelectrolytes based on the polycationic nature of the polylysine used to disperse the nanotubes. The self-assembling of glucose oxidase has allowed us to obtain a supramolecular multistructure for glucose biosensing. The influence of glucose oxidase concentration and adsorption time as well as the effect of using polylysine or MWCNT-Plys as polycationic layers for further adsorption of GOx is also evaluated.Fil: Jalit, Yamile. 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: Rodriguez, Marcela Cecilia. 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: 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: Bollo, Soledad. Universidad de Chile.; ChileFil: 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; ArgentinaWiley VCH Verlag2008-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/113966Jalit, Yamile; Rodriguez, Marcela Cecilia; Rubianes, María Dolores; Bollo, Soledad; Rivas, Gustavo Adolfo; Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine; Wiley VCH Verlag; Electroanalysis; 20; 15; 8-2008; 1623-16311040-03971521-4109CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/elan.200804259info:eu-repo/semantics/altIdentifier/doi/10.1002/elan.200804259info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:08:58Zoai:ri.conicet.gov.ar:11336/113966instacron: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:34982025-09-03 10:08:58.25CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine |
| title |
Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine |
| spellingShingle |
Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine Jalit, Yamile CARBON NANOTUBES CARBON NANOTUBES DISPERSION CATALYSIS ELECTROCHEMICAL SENSOR ENZYMATIC BIOSENSOR GLASSY CARBON GLUCOSE BIOSENSOR GLUCOSE OXIDASE POLYLYSINE |
| title_short |
Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine |
| title_full |
Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine |
| title_fullStr |
Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine |
| title_full_unstemmed |
Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine |
| title_sort |
Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine |
| dc.creator.none.fl_str_mv |
Jalit, Yamile Rodriguez, Marcela Cecilia Rubianes, María Dolores Bollo, Soledad Rivas, Gustavo Adolfo |
| author |
Jalit, Yamile |
| author_facet |
Jalit, Yamile Rodriguez, Marcela Cecilia Rubianes, María Dolores Bollo, Soledad Rivas, Gustavo Adolfo |
| author_role |
author |
| author2 |
Rodriguez, Marcela Cecilia Rubianes, María Dolores Bollo, Soledad Rivas, Gustavo Adolfo |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
CARBON NANOTUBES CARBON NANOTUBES DISPERSION CATALYSIS ELECTROCHEMICAL SENSOR ENZYMATIC BIOSENSOR GLASSY CARBON GLUCOSE BIOSENSOR GLUCOSE OXIDASE POLYLYSINE |
| topic |
CARBON NANOTUBES CARBON NANOTUBES DISPERSION CATALYSIS ELECTROCHEMICAL SENSOR ENZYMATIC BIOSENSOR GLASSY CARBON GLUCOSE BIOSENSOR GLUCOSE OXIDASE POLYLYSINE |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We report the analytical performance of glassy carbon electrodes (GCE) modified with a dispersion of multi-wall carbon nanotubes (MWCNT) in polylysine (Plys) (GCE/MWCNT-Plys). The resulting electrodes show an excellent electrocatalytic activity towards different bioanalytes like ascorbic acid, uric acid and hydrogen peroxide, with important decrease in their oxidation overvoltages. The dispersion of 1.0 mg/mL MWCNT in 1.0 mg/mL polylysine is highly stable, since after 2 weeks the sensitivity for hydrogen peroxide at GCE modified with this dispersion remained in a 90 % of the original value. The MWCNT-Plys layer immobilized on glassy carbon electrodes has been also used as a platform to build supramolecular architectures by self-assembling of polyelectrolytes based on the polycationic nature of the polylysine used to disperse the nanotubes. The self-assembling of glucose oxidase has allowed us to obtain a supramolecular multistructure for glucose biosensing. The influence of glucose oxidase concentration and adsorption time as well as the effect of using polylysine or MWCNT-Plys as polycationic layers for further adsorption of GOx is also evaluated. Fil: Jalit, Yamile. 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: Rodriguez, Marcela Cecilia. 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: 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: Bollo, Soledad. Universidad de Chile.; Chile 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 |
We report the analytical performance of glassy carbon electrodes (GCE) modified with a dispersion of multi-wall carbon nanotubes (MWCNT) in polylysine (Plys) (GCE/MWCNT-Plys). The resulting electrodes show an excellent electrocatalytic activity towards different bioanalytes like ascorbic acid, uric acid and hydrogen peroxide, with important decrease in their oxidation overvoltages. The dispersion of 1.0 mg/mL MWCNT in 1.0 mg/mL polylysine is highly stable, since after 2 weeks the sensitivity for hydrogen peroxide at GCE modified with this dispersion remained in a 90 % of the original value. The MWCNT-Plys layer immobilized on glassy carbon electrodes has been also used as a platform to build supramolecular architectures by self-assembling of polyelectrolytes based on the polycationic nature of the polylysine used to disperse the nanotubes. The self-assembling of glucose oxidase has allowed us to obtain a supramolecular multistructure for glucose biosensing. The influence of glucose oxidase concentration and adsorption time as well as the effect of using polylysine or MWCNT-Plys as polycationic layers for further adsorption of GOx is also evaluated. |
| publishDate |
2008 |
| dc.date.none.fl_str_mv |
2008-08 |
| 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 |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/113966 Jalit, Yamile; Rodriguez, Marcela Cecilia; Rubianes, María Dolores; Bollo, Soledad; Rivas, Gustavo Adolfo; Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine; Wiley VCH Verlag; Electroanalysis; 20; 15; 8-2008; 1623-1631 1040-0397 1521-4109 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/113966 |
| identifier_str_mv |
Jalit, Yamile; Rodriguez, Marcela Cecilia; Rubianes, María Dolores; Bollo, Soledad; Rivas, Gustavo Adolfo; Glassy carbon electrodes modified with multiwall carbon nanotubes dispersed in polylysine; Wiley VCH Verlag; Electroanalysis; 20; 15; 8-2008; 1623-1631 1040-0397 1521-4109 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/elan.200804259 info:eu-repo/semantics/altIdentifier/doi/10.1002/elan.200804259 |
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openAccess |
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application/pdf application/pdf application/pdf application/pdf |
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Wiley VCH Verlag |
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Wiley VCH Verlag |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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