Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts

[EN] High-temperature annealing often induces severe sintering of Pt nanoparticles in Pt/C catalysts, resulting in activity degradation. Here, a carbon nitride-assisted thermal treatment strategy is proposed to enhance the thermal stability of Pt/C. TG-FTIR and XPS analysis reveal that nitrogen-cont...

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Autores: Li, Junyi, Wang, Ying, Tian, Liang|||0000-0002-3801-653X
Tipo de recurso: artículo
Fecha de publicación:2026
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:dnet:riunet______::2c09a7ad1a8fb5db47f1afc04f8c1420
Acceso en línea:https://riunet.upv.es/handle/10251/233937
Access Level:acceso abierto
Palabra clave:Carbon nitride decomposition
Platinum nanoparticles
Sintering suppression
Oxygen reduction reaction
Electrochemical durability
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spelling Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalystsLi, JunyiWang, YingTian, Liang|||0000-0002-3801-653XCarbon nitride decompositionPlatinum nanoparticlesSintering suppressionOxygen reduction reactionElectrochemical durability[EN] High-temperature annealing often induces severe sintering of Pt nanoparticles in Pt/C catalysts, resulting in activity degradation. Here, a carbon nitride-assisted thermal treatment strategy is proposed to enhance the thermal stability of Pt/C. TG-FTIR and XPS analysis reveal that nitrogen-containing species generated during carbon nitride decomposition play a key role in suppressing Pt nanoparticle coalescence at intermediate temperatures. Although the carbon nitride framework decomposes at high temperatures, residual graphitic and pyridinic nitrogen species are retained and interact electronically with Pt, leading to a reduced Pt binding energy. As a result, the carbon nitride-assisted Pt/C maintains a narrow particle size distribution after annealing. Electrochemical measurements demonstrate that the assisted catalyst retains oxygen reduction reaction activity comparable to commercial Pt/C after thermal treatment at 700 degrees C, while the untreated sample shows pronounced performance loss. Moreover, the assisted catalyst exhibits significantly improved durability after 20 000 cycles. This work offers a simple and effective approach to improving the thermal robustness of Pt-based electrocatalysts for PEM fuel cells.This work was financially supported by the Shandong Provincial Natural Science Foundation (No. ZR2022QE109) , Qilu University of Technology (Shandong Academy of Sciences) and the Talent Research Project (2023RCKY209).International Association of Physical ChemistsInstituto Universitario Mixto de Tecnología QuímicaShandong Academy of Agricultural SciencesNatural Science Foundation of Shandong ProvinceRepositorio Institucional de la Universitat Politècnica de València Riunet20262026-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/233937reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengNatural Science Foundation of Shandong Province Natural Science Foundation of Shandong Province ZR2022QE109Shandong Academy of Agricultural Sciences https://doi.org/10.13039/501100014893 2023RCKY209open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento (by)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dnet:riunet______::2c09a7ad1a8fb5db47f1afc04f8c14202026-06-13T07:49:27Z
dc.title.none.fl_str_mv Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts
title Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts
spellingShingle Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts
Li, Junyi
Carbon nitride decomposition
Platinum nanoparticles
Sintering suppression
Oxygen reduction reaction
Electrochemical durability
title_short Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts
title_full Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts
title_fullStr Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts
title_full_unstemmed Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts
title_sort Carbon nitride-assisted thermal treatment for sintering-resistant Pt/C catalysts
dc.creator.none.fl_str_mv Li, Junyi
Wang, Ying
Tian, Liang|||0000-0002-3801-653X
author Li, Junyi
author_facet Li, Junyi
Wang, Ying
Tian, Liang|||0000-0002-3801-653X
author_role author
author2 Wang, Ying
Tian, Liang|||0000-0002-3801-653X
author2_role author
author
dc.contributor.none.fl_str_mv Instituto Universitario Mixto de Tecnología Química
Shandong Academy of Agricultural Sciences
Natural Science Foundation of Shandong Province
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Carbon nitride decomposition
Platinum nanoparticles
Sintering suppression
Oxygen reduction reaction
Electrochemical durability
topic Carbon nitride decomposition
Platinum nanoparticles
Sintering suppression
Oxygen reduction reaction
Electrochemical durability
description [EN] High-temperature annealing often induces severe sintering of Pt nanoparticles in Pt/C catalysts, resulting in activity degradation. Here, a carbon nitride-assisted thermal treatment strategy is proposed to enhance the thermal stability of Pt/C. TG-FTIR and XPS analysis reveal that nitrogen-containing species generated during carbon nitride decomposition play a key role in suppressing Pt nanoparticle coalescence at intermediate temperatures. Although the carbon nitride framework decomposes at high temperatures, residual graphitic and pyridinic nitrogen species are retained and interact electronically with Pt, leading to a reduced Pt binding energy. As a result, the carbon nitride-assisted Pt/C maintains a narrow particle size distribution after annealing. Electrochemical measurements demonstrate that the assisted catalyst retains oxygen reduction reaction activity comparable to commercial Pt/C after thermal treatment at 700 degrees C, while the untreated sample shows pronounced performance loss. Moreover, the assisted catalyst exhibits significantly improved durability after 20 000 cycles. This work offers a simple and effective approach to improving the thermal robustness of Pt-based electrocatalysts for PEM fuel cells.
publishDate 2026
dc.date.none.fl_str_mv 2026
2026-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/233937
url https://riunet.upv.es/handle/10251/233937
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Natural Science Foundation of Shandong Province Natural Science Foundation of Shandong Province ZR2022QE109
Shandong Academy of Agricultural Sciences https://doi.org/10.13039/501100014893 2023RCKY209
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reconocimiento (by)
http://creativecommons.org/licenses/by/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
Reconocimiento (by)
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv International Association of Physical Chemists
publisher.none.fl_str_mv International Association of Physical Chemists
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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