Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt

[EN] A series of photocatalysts containing various loadings of carbon dots (CD) on microporous graphitic carbons (mpC) was prepared by pyrolysis at 900 degrees C under inert atmosphere of alpha-cyclodextrin containing preformed CDs. CDs were obtained by microwave hydrothermal conversion of citric ac...

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Detalles Bibliográficos
Autores: Garcia-Mulero, Ana, Primo, Ana, Cabrero-Antonino, Maria, García Gómez, Hermenegildo|||0000-0002-9664-493X
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/205948
Acceso en línea:https://riunet.upv.es/handle/10251/205948
Access Level:acceso abierto
Palabra clave:Carbon dots
Microporous graphitic carbons
QUIMICA ORGANICA
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spelling Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&ltsub&gt2&lt/sub&gtreductionGarcia-Mulero, AnaPrimo, AnaCabrero-Antonino, MariaGarcía Gómez, Hermenegildo|||0000-0002-9664-493XCarbon dotsMicroporous graphitic carbonsQUIMICA ORGANICA[EN] A series of photocatalysts containing various loadings of carbon dots (CD) on microporous graphitic carbons (mpC) was prepared by pyrolysis at 900 degrees C under inert atmosphere of alpha-cyclodextrin containing preformed CDs. CDs were obtained by microwave hydrothermal conversion of citric acid and urea, and they were purified by centrifugation and partition between aqueous and organic solvents. The CD/mpC composites exhibit the expected morphology for mpC in TEM with particles of about 20 nm and microporous channels of 0.6 nm. XRD and Raman spectra of CD/mpC were also coincident with those of pristine mpC, but XPS and elemental analysis detected the presence of pyridinic N from the CDs. The optimal CD/mpC sample exhibits higher photocatalytic activity for the simultaneous H-2 evolution and CO2 reduction to CH4 than the independent components or than a mechanical CD and mpC mixture reaching a productivity rate of 29 and 5 mu mol g(catalyst)(-1) h(-1) for H-2 and CH4, respectively. CD/mpC photocatalysts were stable for four consecutive runs.Financial support by the Spanish Ministry of Science and Innovation (CEX-2021-001230-S and PDI2021-0126071-OB-CO21 funded by MCIN/AEI/10.13039/501100011033) and Generalitat Valenciana (Prometeo 2021/038 and Advanced Materials program Graphica MFA/2022/023 with funding from European Union NextGenerationEU PRTR-C17.I1).Royal Society of ChemistryInstituto Universitario Mixto de Tecnología QuímicaDepartamento de QuímicaEscuela Técnica Superior de Ingeniería IndustrialGeneralitat ValencianaAgencia Estatal de InvestigaciónMinisterio de Ciencia e InnovaciónUniversitat Politècnica de ValènciaRepositorio Institucional de la Universitat Politècnica de València Riunet20242024-03-12journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/205948reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengGeneralitat Valenciana https://doi.org/10.13039/501100003359 PROMETEO%2F2021%2F038Generalitat Valenciana https://doi.org/10.13039/501100003359 MFA%2F2022%2F023Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 PDI2021-0126071-OB-CO21Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 CEX2021-001230-SMinisterio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 PRTR-C17.I1open accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento (by)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/2059482026-06-13T07:49:27Z
dc.title.none.fl_str_mv Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt
sub&gt
2&lt
/sub&gt
reduction
title Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt
spellingShingle Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt
Garcia-Mulero, Ana
Carbon dots
Microporous graphitic carbons
QUIMICA ORGANICA
title_short Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt
title_full Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt
title_fullStr Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt
title_full_unstemmed Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt
title_sort Metal-free carbon dot-microporous graphitic carbon heterojunctions as photocatalysts for CO&lt
dc.creator.none.fl_str_mv Garcia-Mulero, Ana
Primo, Ana
Cabrero-Antonino, Maria
García Gómez, Hermenegildo|||0000-0002-9664-493X
author Garcia-Mulero, Ana
author_facet Garcia-Mulero, Ana
Primo, Ana
Cabrero-Antonino, Maria
García Gómez, Hermenegildo|||0000-0002-9664-493X
author_role author
author2 Primo, Ana
Cabrero-Antonino, Maria
García Gómez, Hermenegildo|||0000-0002-9664-493X
author2_role author
author
author
dc.contributor.none.fl_str_mv Instituto Universitario Mixto de Tecnología Química
Departamento de Química
Escuela Técnica Superior de Ingeniería Industrial
Generalitat Valenciana
Agencia Estatal de Investigación
Ministerio de Ciencia e Innovación
Universitat Politècnica de València
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Carbon dots
Microporous graphitic carbons
QUIMICA ORGANICA
topic Carbon dots
Microporous graphitic carbons
QUIMICA ORGANICA
description [EN] A series of photocatalysts containing various loadings of carbon dots (CD) on microporous graphitic carbons (mpC) was prepared by pyrolysis at 900 degrees C under inert atmosphere of alpha-cyclodextrin containing preformed CDs. CDs were obtained by microwave hydrothermal conversion of citric acid and urea, and they were purified by centrifugation and partition between aqueous and organic solvents. The CD/mpC composites exhibit the expected morphology for mpC in TEM with particles of about 20 nm and microporous channels of 0.6 nm. XRD and Raman spectra of CD/mpC were also coincident with those of pristine mpC, but XPS and elemental analysis detected the presence of pyridinic N from the CDs. The optimal CD/mpC sample exhibits higher photocatalytic activity for the simultaneous H-2 evolution and CO2 reduction to CH4 than the independent components or than a mechanical CD and mpC mixture reaching a productivity rate of 29 and 5 mu mol g(catalyst)(-1) h(-1) for H-2 and CH4, respectively. CD/mpC photocatalysts were stable for four consecutive runs.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-03-12
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/10251/205948
url https://riunet.upv.es/handle/10251/205948
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Generalitat Valenciana https://doi.org/10.13039/501100003359 PROMETEO%2F2021%2F038
Generalitat Valenciana https://doi.org/10.13039/501100003359 MFA%2F2022%2F023
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 PDI2021-0126071-OB-CO21
Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 CEX2021-001230-S
Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 PRTR-C17.I1
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 Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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 15,81155

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