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dc.contributor.author
Barrios, Celina
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dc.contributor.author
Albiter, E.
dc.contributor.author
Gracia y Jimenez, J. M.
dc.contributor.author
Tiznado, H.
dc.contributor.author
Romo Herrera, J.
dc.contributor.author
Zanella, R.
dc.date.available
2017-09-13T19:54:58Z
dc.date.issued
2016-12
dc.identifier.citation
Barrios, Celina; Albiter, E.; Gracia y Jimenez, J. M.; Tiznado, H.; Romo Herrera, J.; et al.; Photocatalytic hydrogen production over titania modified by gold – Metal (palladium, nickel and cobalt) catalysts; Elsevier; International Journal of Hydrogen Energy; 41; 48; 12-2016; 23287-23300
dc.identifier.issn
0360-3199
dc.identifier.uri
http://hdl.handle.net/11336/24187
dc.description.abstract
The photocatalytic production of hydrogen on modified Au/TiO2-based photocatalysts by using water/methanol mixtures was studied. The main goal was to study the effect of surface modification of Au/TiO2 with Pd, Ni and Co on H2 production under UV light irradiation (λ ca. 254 nm). Catalysts were produced by depositing Pd, Ni or Co precursors (nitrates hydrated salts) on TiO2 (Evonik, P25) by incipient wetness impregnation followed by thermal treatment under H2 (Pd and Co) or air (Ni). Thereafter, Au was incorporated by deposition-precipitation with urea (DPU method) and then the catalysts were thermally activated again under air flow. The photocatalysts were characterized by UV?Vis diffuse reflectance, HAADF-TEM, EDXS, FTIR CO adsorption, XPS and photoluminescence. In order to obtain detailed information about the composition of the nanoparticles, high-resolution elemental analyses (EDXS line scans) were performed. The Au-Pd, Au-Ni and Au-Co on TiO2 photocatalysts showed higher performance for H2 production (266, 256 and 171 mmol H2 mmolAu −1 h−1, respectively) compared to the Au/TiO2 material (106 mmol H2 mmolAu −1 h−1). PL results showed that the improved H2 production rate could be explained by an enhanced charge separation. The highest H2 production showed by the Au-Pd/TiO2 sample could be attributed to synergistic effects, derived from the interaction between Au and Pd particles. For the Au-Ni/TiO2 and Au-Co/TiO2 samples it is proposed that nickel or cobalt oxides worked as promoters (with additives effects) because of the formation of a p-n heterojunction.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Au Nanoparticles
dc.subject
Bimetallic Catalysts
dc.subject
Hydrogen Production
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Tio2
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Water Splitting
dc.subject.classification
Nano-materiales
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dc.subject.classification
Nanotecnología
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Photocatalytic hydrogen production over titania modified by gold – Metal (palladium, nickel and cobalt) catalysts
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-04T15:09:07Z
dc.journal.volume
41
dc.journal.number
48
dc.journal.pagination
23287-23300
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Barrios, Celina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina. Universidad Nacional Autónoma de México; México
dc.description.fil
Fil: Albiter, E.. Universidad Nacional Autónoma de México; México
dc.description.fil
Fil: Gracia y Jimenez, J. M.. Benemérita Universidad Autónoma de Puebla; México
dc.description.fil
Fil: Tiznado, H.. Universidad Nacional Autónoma de México; México
dc.description.fil
Fil: Romo Herrera, J.. Universidad Nacional Autónoma de México; México
dc.description.fil
Fil: Zanella, R.. Universidad Nacional Autónoma de México; México
dc.journal.title
International Journal of Hydrogen Energy
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.ijhydene.2016.09.206
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0360319916314926
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