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Dive into the research topics where S. García-Rodríguez is active.

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Featured researches published by S. García-Rodríguez.


Chemistry: A European Journal | 2012

Photochemical Evidence of Electronic Interwall Communication in Double-Wall Carbon Nanotubes

María Vizuete; María J. Gómez-Escalonilla; S. García-Rodríguez; José Luis G. Fierro; Pedro Atienzar; Hermenegildo García; Fernando Langa

Single- and double-wall carbon nanotubes (CNTs) having dimethylanilino (DMA) units covalently attached to the external graphene wall have been prepared by the reaction of the dimethylaminophenylnitronium ion with the corresponding CNT. The samples have been characterized by Raman and XPS spectroscopies, thermogravimetry, and high-resolution transmission electron microscopy in which the integrity of the single or double wall of the CNT and the percentage of substitution (one dimethylanilino group every 45 carbons of the wall for the single- and double-wall samples) has been determined. Nanosecond laser flash photolysis has shown the generation of transients that has been derived from the charge transfer between the dimethylanilino (as the electron donor) to the CNT graphene wall (as the electron acceptor). Importantly, the lifetime of the double-wall CNT is much shorter than that monitored for the single-wall CNT. Shorter-lived transients were also observed for the pentyl-esterified functionalized double-wall CNT with respect to the single-wall analogue in the presence of hole (CH(3)OH) and electron quenchers (O(2), N(2)O), which has led to the conclusion that the inner, intact graphene wall that is present in double-wall CNT increases the charge mobility significantly, favoring charge recombination processes. Considering the importance that charge mobility has in microelectronics, our finding suggests that double-wall CNT or two-layer graphene may be more appropriate to develop devices needing fast charge mobility.


Archive | 2013

Alternative Metal Oxide Photocatalysts

S. García-Rodríguez

Some metal oxide semiconductors attract attention for its better performance in certain reactions compared to TiO2, due to a more suitable band gap, higher adsorption of the reactants on their surface and to a more convenient product distribution. For instance, the interest on ZnO lays on its high quantum efficiency and for its higher electron mobility which is interesting for dye-sensitized solar cells. WO3 is a visible light-response photocatalyst and under certain conditions may present higher photoactivity than titania under solar irradiation. It is a runner up for the water splitting reaction. Recent applications of WO3 exploit its storage ability as an electron pool for metal protection and bactericidal activity in the dark.


Journal of Catalysis | 2011

Catalytic effects of ruthenium particle size on the Fischer–Tropsch Synthesis

Juan María González Carballo; Jia Yang; Anders Holmen; S. García-Rodríguez; Sergio Rojas; M. Ojeda; José Luis G. Fierro


Applied Catalysis B-environmental | 2010

Functionalization of multi-walled carbon nanotubes and application as supports for electrocatalysts in proton-exchange membrane fuel cell

P. Hernández-Fernández; M. Montiel; P. Ocón; J.L.Gómez de la Fuente; S. García-Rodríguez; Sergio Rojas; J.L.G. Fierro


Applied Catalysis B-environmental | 2009

Controlled synthesis of Pt-Sn/C fuel cell catalysts with exclusive Sn–Pt interaction: Application in CO and ethanol electrooxidation reactions

S. García-Rodríguez; Ferenc Somodi; Irina Borbáth; József L. Margitfalvi; M.A. Peña; José Luis G. Fierro; Sergio Rojas


Applied Catalysis B-environmental | 2012

Supported gold nanoparticle catalysts for wet peroxide oxidation

A. Quintanilla; S. García-Rodríguez; Carmen M. Domínguez; S. Blasco; J.A. Casas; Juan J. Rodriguez


Applied Catalysis B-environmental | 2014

WO3–TiO2 based catalysts for the simulated solar radiation assisted photocatalytic ozonation of emerging contaminants in a municipal wastewater treatment plant effluent

A. Rey; P. García-Muñoz; María D. Hernández-Alonso; E. Mena; S. García-Rodríguez; Fernando J. Beltrán


Applied Catalysis B-environmental | 2011

An FTIR study of Rh-PtSn/C catalysts for ethanol electrooxidation: Effect of surface composition

S. García-Rodríguez; Sergio Rojas; M.A. Peña; J.L.G. Fierro; Stève Baranton; J.-M. Léger


Journal of Physical Chemistry C | 2011

Synthesis of Core−Shell PtRu Dendrimer-Encapsulated Nanoparticles. Relevance as Electrocatalysts for CO Oxidation†

Maria Bernechea; S. García-Rodríguez; Pilar Terreros; Ernesto de Jesús; José Luis G. Fierro; Sergio Rojas


Journal of Physical Chemistry C | 2013

Water–Gas Shift Reaction on Pt/Ce1–xTixO2−δ: The Effect of Ce/Ti Ratio

Klito C. Petallidou; Kyriaki Polychronopoulou; Soghomon Boghosian; S. García-Rodríguez; Angelos M. Efstathiou

Collaboration


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Sergio Rojas

Spanish National Research Council

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José Luis G. Fierro

Spanish National Research Council

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J.L.G. Fierro

Spanish National Research Council

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María D. Hernández-Alonso

Spanish National Research Council

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Benigno Sánchez

Complutense University of Madrid

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M.A. Peña

Spanish National Research Council

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P. Ocón

Autonomous University of Madrid

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Agustín Cobas

University of Santiago de Compostela

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Alejandro Criado

University of Santiago de Compostela

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