Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films

Autores
Herrera, Facundo Carlos; Sireus, Veronica; Rassu, Pietro; Stagi, Luigi; Reale, Marco; Sciortino, Alice; Messina, Fabrizio; Soler Illia, Galo Juan de Avila Arturo; Malfatti, Luca; Innocenzi, Plinio
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The design of efficient and highly durable photoelectrodes requires innovative solutions that can be integrated into thin-film-based technologies. Mesoporous ordered titania, which is characterized by an organized porosity in the 2-10 nm range, represents an ideal matrix for such a purpose. One of the main challenges is the homogeneous and controlled incorporation of photoactive nanoparticles inside the matrix. Titania-carbon dots (C-dots) heterostructures represent promising candidates, but a method to homogeneously introduce C-dots in mesoporous films is still missing. In the present work, C-dots have been nucleated and grown within a mesoporous titania film through in situ solvothermal synthesis. The process promotes the crystallization of titania anatase at low temperatures and at the same time allows the formation of carbon dots without disruption of the porous ordered structure. The process allows building a high-performance nanocomposite as an electrode for oxygen evolution reactions. Photocurrent production under different illumination conditions was measured by linear sweep voltammetry and chronoamperometry. When exposed to a solar simulator, the nanocomposite electrodes yield an increase in photocurrent compared to bare TiO2 matrices. The better performance has been associated with the presence of C-dots acting as active light-harvesting sites and as charge donors to the photoactive centers of the titania film.
Fil: Herrera, Facundo Carlos. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sireus, Veronica. Università Degli Studi Di Sassari; Italia
Fil: Rassu, Pietro. Università Degli Studi Di Sassari; Italia
Fil: Stagi, Luigi. Università Degli Studi Di Sassari; Italia
Fil: Reale, Marco. Università degli Studi di Palermo; Italia
Fil: Sciortino, Alice. Università degli Studi di Palermo; Italia
Fil: Messina, Fabrizio. Università degli Studi di Palermo; Italia
Fil: Soler Illia, Galo Juan de Avila Arturo. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Malfatti, Luca. Università Degli Studi Di Sassari; Italia
Fil: Innocenzi, Plinio. Università Degli Studi Di Sassari; Italia
Materia
Carbon nanomaterials
Nanocomposites
Oxides
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/224864
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania FilmsHerrera, Facundo CarlosSireus, VeronicaRassu, PietroStagi, LuigiReale, MarcoSciortino, AliceMessina, FabrizioSoler Illia, Galo Juan de Avila ArturoMalfatti, LucaInnocenzi, PlinioCarbon nanomaterialsNanocompositesOxideshttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2The design of efficient and highly durable photoelectrodes requires innovative solutions that can be integrated into thin-film-based technologies. Mesoporous ordered titania, which is characterized by an organized porosity in the 2-10 nm range, represents an ideal matrix for such a purpose. One of the main challenges is the homogeneous and controlled incorporation of photoactive nanoparticles inside the matrix. Titania-carbon dots (C-dots) heterostructures represent promising candidates, but a method to homogeneously introduce C-dots in mesoporous films is still missing. In the present work, C-dots have been nucleated and grown within a mesoporous titania film through in situ solvothermal synthesis. The process promotes the crystallization of titania anatase at low temperatures and at the same time allows the formation of carbon dots without disruption of the porous ordered structure. The process allows building a high-performance nanocomposite as an electrode for oxygen evolution reactions. Photocurrent production under different illumination conditions was measured by linear sweep voltammetry and chronoamperometry. When exposed to a solar simulator, the nanocomposite electrodes yield an increase in photocurrent compared to bare TiO2 matrices. The better performance has been associated with the presence of C-dots acting as active light-harvesting sites and as charge donors to the photoactive centers of the titania film.Fil: Herrera, Facundo Carlos. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sireus, Veronica. Università Degli Studi Di Sassari; ItaliaFil: Rassu, Pietro. Università Degli Studi Di Sassari; ItaliaFil: Stagi, Luigi. Università Degli Studi Di Sassari; ItaliaFil: Reale, Marco. Università degli Studi di Palermo; ItaliaFil: Sciortino, Alice. Università degli Studi di Palermo; ItaliaFil: Messina, Fabrizio. Università degli Studi di Palermo; ItaliaFil: Soler Illia, Galo Juan de Avila Arturo. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Malfatti, Luca. Università Degli Studi Di Sassari; ItaliaFil: Innocenzi, Plinio. Università Degli Studi Di Sassari; ItaliaAmerican Chemical Society2023-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/224864Herrera, Facundo Carlos; Sireus, Veronica; Rassu, Pietro; Stagi, Luigi; Reale, Marco; et al.; Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films; American Chemical Society; Chemistry Of Materials; 35; 19; 10-2023; 8009-80190897-4756CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.chemmater.3c01164info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.chemmater.3c01164info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:21:39Zoai:ri.conicet.gov.ar:11336/224864instacron: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:34982025-09-10 13:21:40.053CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films
title Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films
spellingShingle Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films
Herrera, Facundo Carlos
Carbon nanomaterials
Nanocomposites
Oxides
title_short Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films
title_full Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films
title_fullStr Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films
title_full_unstemmed Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films
title_sort Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films
dc.creator.none.fl_str_mv Herrera, Facundo Carlos
Sireus, Veronica
Rassu, Pietro
Stagi, Luigi
Reale, Marco
Sciortino, Alice
Messina, Fabrizio
Soler Illia, Galo Juan de Avila Arturo
Malfatti, Luca
Innocenzi, Plinio
author Herrera, Facundo Carlos
author_facet Herrera, Facundo Carlos
Sireus, Veronica
Rassu, Pietro
Stagi, Luigi
Reale, Marco
Sciortino, Alice
Messina, Fabrizio
Soler Illia, Galo Juan de Avila Arturo
Malfatti, Luca
Innocenzi, Plinio
author_role author
author2 Sireus, Veronica
Rassu, Pietro
Stagi, Luigi
Reale, Marco
Sciortino, Alice
Messina, Fabrizio
Soler Illia, Galo Juan de Avila Arturo
Malfatti, Luca
Innocenzi, Plinio
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Carbon nanomaterials
Nanocomposites
Oxides
topic Carbon nanomaterials
Nanocomposites
Oxides
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The design of efficient and highly durable photoelectrodes requires innovative solutions that can be integrated into thin-film-based technologies. Mesoporous ordered titania, which is characterized by an organized porosity in the 2-10 nm range, represents an ideal matrix for such a purpose. One of the main challenges is the homogeneous and controlled incorporation of photoactive nanoparticles inside the matrix. Titania-carbon dots (C-dots) heterostructures represent promising candidates, but a method to homogeneously introduce C-dots in mesoporous films is still missing. In the present work, C-dots have been nucleated and grown within a mesoporous titania film through in situ solvothermal synthesis. The process promotes the crystallization of titania anatase at low temperatures and at the same time allows the formation of carbon dots without disruption of the porous ordered structure. The process allows building a high-performance nanocomposite as an electrode for oxygen evolution reactions. Photocurrent production under different illumination conditions was measured by linear sweep voltammetry and chronoamperometry. When exposed to a solar simulator, the nanocomposite electrodes yield an increase in photocurrent compared to bare TiO2 matrices. The better performance has been associated with the presence of C-dots acting as active light-harvesting sites and as charge donors to the photoactive centers of the titania film.
Fil: Herrera, Facundo Carlos. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Sireus, Veronica. Università Degli Studi Di Sassari; Italia
Fil: Rassu, Pietro. Università Degli Studi Di Sassari; Italia
Fil: Stagi, Luigi. Università Degli Studi Di Sassari; Italia
Fil: Reale, Marco. Università degli Studi di Palermo; Italia
Fil: Sciortino, Alice. Università degli Studi di Palermo; Italia
Fil: Messina, Fabrizio. Università degli Studi di Palermo; Italia
Fil: Soler Illia, Galo Juan de Avila Arturo. Universidad Nacional de San Martin. Instituto de Nanosistemas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Malfatti, Luca. Università Degli Studi Di Sassari; Italia
Fil: Innocenzi, Plinio. Università Degli Studi Di Sassari; Italia
description The design of efficient and highly durable photoelectrodes requires innovative solutions that can be integrated into thin-film-based technologies. Mesoporous ordered titania, which is characterized by an organized porosity in the 2-10 nm range, represents an ideal matrix for such a purpose. One of the main challenges is the homogeneous and controlled incorporation of photoactive nanoparticles inside the matrix. Titania-carbon dots (C-dots) heterostructures represent promising candidates, but a method to homogeneously introduce C-dots in mesoporous films is still missing. In the present work, C-dots have been nucleated and grown within a mesoporous titania film through in situ solvothermal synthesis. The process promotes the crystallization of titania anatase at low temperatures and at the same time allows the formation of carbon dots without disruption of the porous ordered structure. The process allows building a high-performance nanocomposite as an electrode for oxygen evolution reactions. Photocurrent production under different illumination conditions was measured by linear sweep voltammetry and chronoamperometry. When exposed to a solar simulator, the nanocomposite electrodes yield an increase in photocurrent compared to bare TiO2 matrices. The better performance has been associated with the presence of C-dots acting as active light-harvesting sites and as charge donors to the photoactive centers of the titania film.
publishDate 2023
dc.date.none.fl_str_mv 2023-10
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/224864
Herrera, Facundo Carlos; Sireus, Veronica; Rassu, Pietro; Stagi, Luigi; Reale, Marco; et al.; Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films; American Chemical Society; Chemistry Of Materials; 35; 19; 10-2023; 8009-8019
0897-4756
CONICET Digital
CONICET
url http://hdl.handle.net/11336/224864
identifier_str_mv Herrera, Facundo Carlos; Sireus, Veronica; Rassu, Pietro; Stagi, Luigi; Reale, Marco; et al.; Chemical Design of Efficient Photoelectrodes by Heterogeneous Nucleation of Carbon Dots in Mesoporous Ordered Titania Films; American Chemical Society; Chemistry Of Materials; 35; 19; 10-2023; 8009-8019
0897-4756
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acs.chemmater.3c01164
info:eu-repo/semantics/altIdentifier/doi/10.1021/acs.chemmater.3c01164
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.48226

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