Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots

Cobalt and nickel co-doped carbon dots (CoNi-CDs) have been synthesized using hydrothermal microwave assisted methodology. CoNi-CDs have been characterized, showing their ability to be diazotized and electro- grafted onto carbon surfaces, generating an ordered pattern distribution over carbon electr...

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Detalles Bibliográficos
Autores: Corrales Cristeto, Julio, Gutiérrez Sánchez, María Cristina, Mateo-Martí, Eva, Lorenzo Abad, Encarnación, Martínez Periñán, Emiliano
Tipo de recurso: artículo
Fecha de publicación:2026
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/741080
Acceso en línea:https://hdl.handle.net/10486/741080
https://dx.doi.org/10.1016/j.electacta.2026.148285
Access Level:acceso abierto
Palabra clave:Doped carbon dots
Electrocatalyst
OER
Electrografting
Química
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spelling Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dotsCorrales Cristeto, JulioGutiérrez Sánchez, María CristinaMateo-Martí, EvaLorenzo Abad, EncarnaciónMartínez Periñán, EmilianoDoped carbon dotsElectrocatalystOERElectrograftingQuímicaCobalt and nickel co-doped carbon dots (CoNi-CDs) have been synthesized using hydrothermal microwave assisted methodology. CoNi-CDs have been characterized, showing their ability to be diazotized and electro- grafted onto carbon surfaces, generating an ordered pattern distribution over carbon electrode surfaces. High electrocatalytic activity through oxygen evolution reaction (OER) in basic medium has been proved, showing that the electrocatalyst activity is enhanced when the CoNi-CDs are grafted onto the working electrode instead of just drop-casted. Grafted CoNi-CDs over carbon screen printed electrodes (grafted CoNi-CDs/CSPE) present lower overpotential for OER compared with RuO 2 reference material drop-casted over CSPE. Furthermore, the high turnover frequency of the electrocatalytic centers (cobalt and nickel ions) embedded into the carbon nanostructure enhances the OER electrocatalysis using a small amount of metal for the preparation of the electrocatalyst. In addition, good stability is shown for the modified electrodes used during OER electrocatalystThis work has been supported by the Comunidad Autónoma de Madrid (2021-5A/BIO-20943 and SI3/PJI/2021-00341) and the Spanish Ministerio de Ciencia e Innovación (PID2020-116728RB-I00, TED2021-129738B-I00, RED2022-134120-T and PID2022-142262OA- I00)ElsevierDepartamento de Química Analítica y Análisis InstrumentalFacultad de CienciasGobierno de EspañaComunidad de Madrid20262026-03-20research articlehttp://purl.org/coar/resource_type/c_2df8fbb1EVoRhttp://purl.org/coar/version/c_dc82b40f9837b551info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10486/741080https://dx.doi.org/10.1016/j.electacta.2026.148285reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7410802026-06-23T12:46:27Z
dc.title.none.fl_str_mv Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots
title Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots
spellingShingle Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots
Corrales Cristeto, Julio
Doped carbon dots
Electrocatalyst
OER
Electrografting
Química
title_short Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots
title_full Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots
title_fullStr Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots
title_full_unstemmed Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots
title_sort Oxygen evolution reaction electrocatalyst based on grafted cobalt and nickel doped carbon dots
dc.creator.none.fl_str_mv Corrales Cristeto, Julio
Gutiérrez Sánchez, María Cristina
Mateo-Martí, Eva
Lorenzo Abad, Encarnación
Martínez Periñán, Emiliano
author Corrales Cristeto, Julio
author_facet Corrales Cristeto, Julio
Gutiérrez Sánchez, María Cristina
Mateo-Martí, Eva
Lorenzo Abad, Encarnación
Martínez Periñán, Emiliano
author_role author
author2 Gutiérrez Sánchez, María Cristina
Mateo-Martí, Eva
Lorenzo Abad, Encarnación
Martínez Periñán, Emiliano
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Química Analítica y Análisis Instrumental
Facultad de Ciencias
Gobierno de España
Comunidad de Madrid
dc.subject.none.fl_str_mv Doped carbon dots
Electrocatalyst
OER
Electrografting
Química
topic Doped carbon dots
Electrocatalyst
OER
Electrografting
Química
description Cobalt and nickel co-doped carbon dots (CoNi-CDs) have been synthesized using hydrothermal microwave assisted methodology. CoNi-CDs have been characterized, showing their ability to be diazotized and electro- grafted onto carbon surfaces, generating an ordered pattern distribution over carbon electrode surfaces. High electrocatalytic activity through oxygen evolution reaction (OER) in basic medium has been proved, showing that the electrocatalyst activity is enhanced when the CoNi-CDs are grafted onto the working electrode instead of just drop-casted. Grafted CoNi-CDs over carbon screen printed electrodes (grafted CoNi-CDs/CSPE) present lower overpotential for OER compared with RuO 2 reference material drop-casted over CSPE. Furthermore, the high turnover frequency of the electrocatalytic centers (cobalt and nickel ions) embedded into the carbon nanostructure enhances the OER electrocatalysis using a small amount of metal for the preparation of the electrocatalyst. In addition, good stability is shown for the modified electrodes used during OER electrocatalyst
publishDate 2026
dc.date.none.fl_str_mv 2026
2026-03-20
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
EVoR
http://purl.org/coar/version/c_dc82b40f9837b551
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10486/741080
https://dx.doi.org/10.1016/j.electacta.2026.148285
url https://hdl.handle.net/10486/741080
https://dx.doi.org/10.1016/j.electacta.2026.148285
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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