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Listar por autor "Primo Arnau, Ana María"

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111 oriented gold nanoplatelets on multilayer graphene as visible light photocatalyst for overall water splitting

Mateo Mateo, Diego; Esteve Adell, Iván; Albero Sancho, Josep; Sánchez Royo, Juan Francisco; Primo Arnau, Ana María; García Gómez, Hermenegildo (Nature Publishing Group, 2016-06-06)

[EN] Development of renewable fuels from solar light appears as one of the main current challenges in energy science. A plethora of photocatalysts have been investigated to obtain hydrogen and oxygen from water and solar ...
3D defective graphenes with subnanometric porosity obtained by soft-templating following zeolite procedures

Peng, Lu; Doménech-Carbó, Antonio; Primo Arnau, Ana Maria; García Gómez, Hermenegildo (The Royal Society of Chemistry, 2019-12-01)

[EN] By applying the well-known templating mechanism employed for the synthesis of mesoporous silicas to the structuration of sodium alginate, a novel defective 3D tubular graphene material (graphenolite) with hierarchical ...
3D defective graphenes with subnanometric porosity obtained by soft-templating following zeolite procedures

Peng, Lu; Domenech-Carbo, Antonio; Primo Arnau, Ana Maria; García Gómez, Hermenegildo (Royal Society of Chemistry, 2019-12-01)

[EN] By applying the well-known templating mechanism employed for the synthesis of mesoporous silicas to the structuration of sodium alginate, a novel defective 3D tubular graphene material (graphenolite) with hierarchical ...
3D Structured Graphenes as (Photo)Catalysts

García Mulero, Ana (Universitat Politècnica de València, 2023-03-20)

[ES] En la actualidad, el elevado consume energético y el aumento de la concentración de CO2 en la atmósfera han hecho necesaria la búsqueda de nuevas opciones para los procesos actuales. Una respuesta ha sido el aprovechamiento ...
A reliable procedure for the preparation of graphene-boron nitride superlattices as large area (cm x cm) films on arbitrary substrates or powders (gram scale) and unexpected electrocatalytic properties

Rendon-Patiño, Alejandra; Doménech, Antonio; García Gómez, Hermenegildo; Primo Arnau, Ana Maria (The Royal Society of Chemistry, 2019-02-14)

[EN] Herein, a reliable procedure for the preparation of graphene-boron nitride superlattices, either as films or powders, consisting of the pyrolysis at 900 degrees C of polystyrene embedded pre-formed boron nitride single ...
Alginate as template in the preparation of active titania photocatalysts

Buaki-Sogo, Mireia; Serra, Marco; Primo Arnau, Ana María; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo (WILEY-VCH Verlag GmbH & Co. KGaA,, 2012)

[EN] A simple and reliable procedure to prepare TiO2 and Au/TiO2 samples with high photocatalytic activity for hydrogen generation from water/methanol mixtures is reported, which uses natural alginate as the templating ...
All-carbon microporous graphitic photocatalyst-promoted reduction of CO2 to CO in the absence of metals or dopant elements

Garcia-Mulero, Ana; Asiri, Abdullah M; Albero-Sancho, Josep; Primo Arnau, Ana Maria; García Gómez, Hermenegildo (The Royal Society of Chemistry, 2022-08-18)

[EN] Microporous graphitic carbon (mp-C) derived from the pyrolysis of alpha-, beta-, and gamma-cyclodextrins exhibited photocatalytic activity in CO2-saturated acetonitrile-water upon irradiation with UV-Vis light and in ...
Aqueous Phase Methanol Reforming Catalyzed by Fe-Cu Alloy Nanoparticles Wrapped on Nitrogen-Doped Graphene

García-Baldoví, Alberto; Peng, Lu; Santiago-Portillo, Andrea; Asiri, Abdullah M.; Primo Arnau, Ana Maria; García Gómez, Hermenegildo (American Chemical Society, 2022-07-25)

[EN] Small Fe-Cu nanoparticles (NPs) (about 1 nm) supported at a high loading (over 10 wt %) on N-doped graphitic carbon have been prepared in a single pyrolytic step from chitosan adsorbing Cu2+ and Fe2+ salts. The presence ...
Aqueous phase reforming of glycerol using doped graphenes as metal-free catalysts

Esteve-Adell, Iván; Crapart, Bertrand; Primo Arnau, Ana María; Serp, Philippe; García Gómez, Hermenegildo (The Royal Society of Chemistry, 2017)

[EN] Boron-doped graphene obtained by pyrolysis at 900 degrees C of the boric acid ester of alginate was found to be the most active graphene among a series of doped and co-doped graphenes to promote the aqueous phase ...
Band Engineering of Semiconducting Microporous Graphitic Carbons by Phosphorous Doping: Enhancing of Photocatalytic Overall Water Splitting

Garcia-Mulero, Ana; Rendón-Patiño, Alejandra; Asiri, Abdullah M.; Primo Arnau, Ana Maria; García Gómez, Hermenegildo (American Chemical Society, 2021-10-20)

[EN] Carbon-based solar photocatalysts for overall water splitting could provide H2 as an energy vector in a clean and sustainable way. Band engineering to align energy levels can be achieved, among other ways, by doping. ...
Band gap alignment of structured microporous graphitic carbons by N doping and its influence on photocatalytic overall water splitting

Rendon-Patiño, Alejandra; Torres-Martí, Ferrán; Primo Arnau, Ana Maria; García Gómez, Hermenegildo (Royal Society of Chemistry, 2022-05-03)

[EN] Hydrogen generation from water using solar light could be a process of paramount importance in the forthcoming decarbonized society. This reaction requires efficient photocatalysts based on earthabundant elements. ...
Basic zeolites containing palladium as bifunctional heterogeneous catalysts for the Heck reaction

Corma Canós, Avelino; García Gómez, Hermenegildo; Leyva Perez, Antonio; Primo Arnau, Ana Maria (Elsevier, 2003)

[EN] K+ and Cs+ exchanged X zeolite containing PdCl2 catalyzes the Heck reaction of PhI or PhBr with styrene in toluene or polymethylbenzenes without the need of extrinsic base. The reaction is truly heterogeneous and no ...
Bimetallic Oriented (Au/Cu2O) vs. Monometallic 1.1.1 Au (0) or 2.0.0 Cu2O Graphene-Supported Nanoplatelets as Very Efficient Catalysts for Michael and Henry Additions

Simion, Andrada; Candu, Natalia; Coman, Simona M.; Primo Arnau, Ana Maria; Esteve-Adell, Iván; Michelet, Veronique; Parvulescu, Vasile I.; García Gómez, Hermenegildo (John Wiley & Sons, 2018-12-02)

[EN] Michael and Henry addition reactions have been investigated using mono (Au and Cu2O) and bimetallic nanoplatelets (Au/Cu2O) grafted onto few-layers graphene (fl-G) films as heterogeneous catalysts by comparison with ...
Catalyst-free one step synthesis of large area vertically stacked N-doped graphene-boron nitride heterostructures from biomass source

Esteve-Adell, Iván; He, Jinbao; Ramiro Manzano, Fernando; Atienzar Corvillo, Pedro Enrique; Primo Arnau, Ana Maria; García Gómez, Hermenegildo (The Royal Society of Chemistry, 2018)

[EN] A procedure for the one-step preparation of films of few-layer N-doped graphene on top of nanometric hexagonal boron nitride sheets ((N)graphene/h-BN) based on the pyrolysis at 900 degrees C under an inert atmosphere ...
Catalytic transformation of the marine polysaccharide ulvan into rare sugars, tartaric and succinic acids

Podolean, Iunia; Coman, Simona M.; Bucur, Cristina; Teodorescu, Christian; Kikionis, Stefanos; Ioannou, Efstathia; Roussis, Vassilios; Primo Arnau, Ana Maria; García Gómez, Hermenegildo; Parvulescu, Vasile I. (Elsevier, 2022-01-01)

[EN] The green macroalga Ulva rigida represents a promising feedstock for biorefinary due to its fast growth and cosmopolitan distribution. The main component of the cell walls of U. rigida is a sulfated glucuronorhamnan ...
Chitosan-Templated Synthesis of Few-Layers Boron Nitride and its Unforeseen Activity as a Fenton Catalyst

Primo Arnau, Ana María; Navalón Oltra, Sergio; Asiri, Abdullah M; García Gómez, Hermenegildo (Wiley, 2015-01-02)

A novel procedure for the preparation of fewlayers boron nitride (BN), either as films or as suspended BN platelets, is presented, based on the pyrolysis of chitosan, which serves both as a matrix to embed ammonium borate ...
Co-Fe Clusters Supported on N-Doped Graphitic Carbon as Highly Selective Catalysts for Reverse Water Gas Shift Reaction

Peng, Lu; Jurca, Bogdan; Primo Arnau, Ana Maria; Gordillo, Alvaro; Parvulescu, Vasile I.; García Gómez, Hermenegildo (American Chemical Society, 2021-07-19)

[EN] Graphitic carbons are suitable supports of metal nanoparticles with catalytic activity. In the present study, the preparation of N-doped graphitic carbon supporting clusters of Fe-Co alloys starting from biomass waste ...
Co-Fe Nanoparticles Wrapped on N-Doped Graphitic Carbons as Highly Selective CO2 Methanation Catalysts

Jurca, Bogdan; Peng, Lu; Primo Arnau, Ana Maria; Gordillo, Alvaro; Parvulescu, Vasile I.; García Gómez, Hermenegildo (American Chemical Society, 2021-08-11)

[EN] Pyrolysis of chitosan containing various loadings of Co and Fe renders Co-Fe alloy nanoparticles supported on N-doped graphitic carbon. Transmission electron microscopy (TEM) images show that the surface of Co-Fe NPs ...
CO2 methanation catalyzed by oriented MoS2 nanoplatelets supported on few layers graphene

Primo Arnau, Ana Maria; He, Jinbao; Jurca, Bogdan; Cojocaru, Bogdan; Bucur, Cristina; Parvulescu, Vasile I.; García Gómez, Hermenegildo (Elsevier, 2019-05-15)

[EN] Powders of molybdenum disulfide platelets strongly grafted on graphene have been prepared by pyrolysis of ammonium alginate containing adsorbed various proportions of (NH4)(2)MoS4. After pyrolysis, formation of MoS2 ...
CO2-Fixation on Aliphatic alpha ,omega-Diamines to Form Cyclic Ureas, Catalyzed by Ceria Nanoparticles that were Obtained by Templating with Alginate

Primo Arnau, Ana María; Aguado, Eric; García Gómez, Hermenegildo (Wiley-VCH Verlag, 2013-04)

Ceria nanoparticles (average particle size: 8nm) have been obtained by the calcination of alginate aerogel beads that were precipitated from aqueous solutions of (NH4)2Ce(NO3)6. These nanoparticles were considerably more ...