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dc.contributor.author
Messina, María Mercedes  
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Barrionuevo, Santiago  
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Coustet, Marcos Eduardo  
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Kreuzer, Mark P.  
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Saccone, Fabio Daniel  
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Dos Santos Claro, Paula Cecilia  
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Ibañez, Francisco Javier  
dc.date.available
2023-09-19T12:53:08Z  
dc.date.issued
2021-07  
dc.identifier.citation
Messina, María Mercedes; Barrionuevo, Santiago; Coustet, Marcos Eduardo; Kreuzer, Mark P.; Saccone, Fabio Daniel; et al.; Graphene and Carbon Dots for Photoanodes with Enhanced Performance; American Chemical Society; ACS Applied Nano Materials; 4; 7; 7-2021; 7309-7318  
dc.identifier.issn
2574-0970  
dc.identifier.uri
http://hdl.handle.net/11336/211965  
dc.description.abstract
The way graphene (GDs) and carbon dots (CDs) are synthesized and combined with TiO2determine their photoelectrochemical efficiency upon UV and visible LED lights. GDs and CDs are obtained by relatively unexplored top-down methods and conventional bottom-up methods, respectively. Top-down methods consist in the seedless growth of ZnO nanoparticles on the surface of graphene and the electrochemical cleavage of graphene grown on Ni foam. These carbon nanoparticles are later combined with TiO2by different approaches such as solution mixing, adsorption via APTES linkers, and drop-casting on an already formed TiO2film. Once the films are formed, they are placed into a photoelectrochemical Zahner cell and irradiated with LED lights at 450 and 360 nm. It is determined that CDs and GDs perform as efficient photosensitizers as demonstrated by an increase of ∼19- and 20-fold net photocurrent density when irradiated with UV and visible LED lights, respectively. We encountered that CDs are more sensitive upon visible light, whereas GDs promptly respond to UV light due to their difference in size-dependent band gap. Importantly, GDs obtained from seedless growth of ZnO are sensitive to both: UV and Vis LED irradiation. The combination of both nanocarbons would expand the absorption range and may be potentially used as cosensitizers toward the construction of more effective and advanced photoanodes.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Chemical Society  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
CARBON DOTS  
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EFFICIENCY  
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GRAPHENE DOTS  
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PHOTOANODES  
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SENSITIVITY  
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Nano-materiales  
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Nanotecnología  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Graphene and Carbon Dots for Photoanodes with Enhanced Performance  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-09-18T13:30:44Z  
dc.journal.volume
4  
dc.journal.number
7  
dc.journal.pagination
7309-7318  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Messina, María Mercedes. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina  
dc.description.fil
Fil: Barrionuevo, Santiago. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina  
dc.description.fil
Fil: Coustet, Marcos Eduardo. Universidad Nacional de La Plata; Argentina  
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Fil: Kreuzer, Mark P.. YPF - Tecnología; Argentina  
dc.description.fil
Fil: Saccone, Fabio Daniel. YPF - Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
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Fil: Dos Santos Claro, Paula Cecilia. YPF - Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina  
dc.description.fil
Fil: Ibañez, Francisco Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina  
dc.journal.title
ACS Applied Nano Materials  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/acsanm.1c01295  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acsanm.1c01295