Vapor phase acylation of guaiacol with acetic acid over micro, nano and hierarchical MFI and BEA zeolites

Autores: Gutierrez-Rubio, S; Shamzhy, M; Cejka, J; Serrano, DP; Moreno, I; Coronado, JM

Artículo.
Appl. Catal. B-Environ.. vol: 285. page: 0926-3373.
Fecha: may-15. 2021.
Doi: 10.1016/j.apcatb.2020.119826.

Resumen:
Vapor phase acylation of guaiacol with acetic acid was explored over a series of micro, nanocrystalline, and hierarchical MFI and BEA zeolites with different acidic and textural properties using a continuous flow reactor. The main [read more]

Study of the evolution of FeNxCy and Fe3C species in Fe/N/C catalysts during the oxygen reduction reaction in acid and alkaline electrolyte

Autores: Garcia, A; Pascual, L; Ferrer, P; Gianolio, D; Held, G; Grinter, DC; Pena, MGA; Retuerto, M; Rojas, S

Artículo.
J. Power Sources. vol: 490. page: 0378-7753.
Fecha: APR 1. 2021.
Doi: 10.1016/j.jpowsour.2021.229487.

Resumen:
The nature and evolution of FeNxCy moieties in Fe/C/N catalysts has been studied by analysing Fe and N environments. TEM and Fe-XAS reveal the presence of FeNx moieties [read more]

How oxidation state and lattice distortion influence the oxygen evolution activity in acid of iridium double perovskites

Autores: Retuerto, M; Pascual, L; Pique, O; Kayser, P; Salam, MA; Mokhtar, M; Alonso, JA; Pena, M; Calle-Vallejo, F; Rojas, S

Artículo.
J. Mater. Chem. A. vol: 9. page: 2050-7488.
Fecha: 10-mar. 2021.
Doi: 10.1039/d0ta10316k.

Resumen:
In view of iridium’s scarceness and high cost, Ir-containing catalysts for water electrolyzers should have low loadings and maximal utilization. Here, we studied low-Ir-content, highly active, [read more]

Enzyme/Nanocopper Hybrid Nanozymes: Modulating Enzyme-like Activity by the Protein Structure for Biosensing and Tumor Catalytic Therapy

Autores: Losada Garcia, N; Jimenez-Alesanco, A; Velazquez-Campoy, A; Abian, O; Palomo, JM

Artículo.
ACS Appl. Mater. Interfaces.
Fecha: jan-20. 2021.
Doi: 10.1021/acsami.0c20501

Resumen:
Artificial enzymes with modulated enzyme-mimicking activities of natural systems represent a challenge in catalytic applications. Here, we show the creation of artificial Cu metalloenzymes based on the generation of Cu nanoparticles in [read more]

Effect of surface area and physical-chemical properties of graphite and graphene-based materials on their adsorption capacity towards metronidazole and trimethoprim antibiotics in aqueous solution

Authors: Carrales-Alvarado, DH; Rodriguez-Ramos, I; Leyva-Ramos, R; Mendoza-Mendoza, E; Villela-Martinez, DE Article. Chem. Eng. J.. vol: 402. page: 1385-8947. Date: DEC 15. 2020. Doi: 10.1016/j.cej.2020.126155. Abstract: The adsorption of metronidazole (MNZ) and trimethoprim (TMP) antibiotics from water on nanomaterials synthesized from graphene oxide and graphite, was examined thoroughly. The effect of the physicochemical properties and surface [read more]

Strong effect of light scattering by distribution of TiO2 particle aggregates on photocatalytic efficiency in aqueous suspensions

Authors: Tolosana-Moranchel, A; Pecharroman, C; Faraldos, M; Bahamonde, A Article. Chem. Eng. J.. vol: 403. page: 1385-8947. Date: JAN 1. 2021. Doi: 10.1016/j.cej.2020.126186. Abstract: This work examines the important role of light power absorbed by TiO2 on the photocatalytic degradation of dichloroacetic acid (DCA) in a semi-continuous slurry photoreactor with UV-Vis radiation. This system is an [read more]

Spinel-Type nitride compounds with improved features as solar cell absorbers

Authors: Sanchez-Palencia, P; Garcia, G; Conesa, JC; Wahnon, P; Palacios, P

Article.
Acta Mater.. vol: 197. page: 1359-6454.
Date: sep-15. 2020.
Doi: 10.1016/j.actamat.2020.07.034.

Abstract:
Ternary spinel nitrides are a new class of semiconductor materials with tunable bandgap in the visible range. In this work, we report a rational design of spinel-type nitride compounds with improved features as solar [read more]

Advances in catalytic routes for the production of carboxylic acids from biomass: a step forward for sustainable polymers

Authors: Iglesias, J; Martinez-Salazar, I; Maireles-Torres, P; Alonso, DM; Mariscal, R; Granados, ML

Review.
Chem. Soc. Rev.. vol: 49. page: 0306-0012.
Date: AUG 21. 2020.
Doi: 10.1039/d0cs00177e.

Abstract:
Polymers are ubiquitously present in our daily life because they can meet a wide range of needs and fields of applications. This success, based on an irresponsible linear consumption of [read more]

Facile synthesis of B/g-C(3)N(4)composite materials for the continuous-flow selective photo-production of acetone

Authors: Caudillo-Flores, U; Rodriguez-Padron, D; Munoz-Batista, MJ; Kubacka, A; Luque, R; Fernandez-Garcia, M

Article.
Green Chem.. vol: 22. page: 1463-9262.
Date: AUG 7. 2020.
Doi: 10.1039/d0gc01326a.

Abstract:
In this work versatile boron-carbon nitride composite materials were synthesized and utilized in a sustainable process using sunlight as the energy source for the continuous-flow selective photocatalytic production of acetone from [read more]

The enzyme-induced formation of iron hybrid nanostructures with different morphologies

Authors: Benavente, R; Lopez-Tejedor, D; Morales, MD; Perez-Rizquez, C; Palomo, JM

Article.
Nanoscale. vol: 12. page: 2040-3364.
Date: jun-28. 2020.
Doi: 10.1039/d0nr03142a.

Abstract:
A new synthesis method for tailor-made iron-hybrid nanoparticles has been carried out for the first time using enzymes, which directly induce the formation of inorganic iron species. The role of the protein was critical for [read more]

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