División de Nanociencias y Materiales: Envíos recientes
Mostrando ítems 281-300 de 595
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Pine-tree-like morphologies of nitrogen-doped carbon nanotubes: Electron field emission enhancement
(2014)"Nitrogen-doped multiwalled carbon nanotube (CNT) bundles exhibiting pine-tree-like morphologies were synthesized on silicon-silicon oxide (Si/SiO2) substrates using a pressure-controlled chemical vapor deposition process. ... -
Gold-TiO2-Nickel catalysts for low temperature-driven CO oxidation reaction
(2016)"Nickel-doped-TiO2 catalysts were prepared by the sol–gel method and surface modified with gold nanoparticles (AuNPs) by the urea-deposition-precipitation technique. The as-synthesized catalysts were characterized by X-ray ... -
Hydrogen production by tailoring the brookite and Cu2O ratio of sol-gel Cu-TiO2 photocatalysts
(2017)"Cu-TiO2 photocatalysts were prepared by the sol-gel method. Copper loadings from, 1.0 to 5.0 wt % were used. The materials were annealed at different temperatures (from 400 to 600 °C) to study the formation of brookite ... -
Silver nanoparticles loaded on Cu-doped TiO2 for the effective reduction of nitro-aromatic contaminants
(2015)"The addition of Cu species via copper glycine complexes as a strategy for doping the TiO2 structure during the sol–gel process produces a copper–TiO2-based composite. The combination of the copper–TiO2-based composite ... -
Synthesis, characterization and magnetic properties of Co@Au core-shell nanoparticles encapsulated by nitrogen-doped multiwall carbon nanotubes
(2014)"Co/Au bilayer thin films were deposited on Si/SiOx substrates using the magnetron sputtering method and used as a catalytic support to grow forests of aligned nitrogen-doped multiwalled carbon nanotubes (N-MWCNT) via ... -
Efficient carbon nanotube sponges production boosted by acetone in CVD-Synthesis
(2018)"A high production of nitrogen-doped carbon nanotube sponges (N-CNS) was obtained at 1020 °C with 4 h of growth in an aerosol-assisted chemical vapor deposition (AACVD) experiment modified with two independent sprayers ... -
Carbon sponge-type nanostructures based on coaxial nitrogen-doped multiwalled carbon nanotubes grown by CVD using benzylamine as precursor
(2017)"Carbon sponges-type nanostructures (CSTN) based on coaxial nitrogen-doped multiwalled carbon nanotubes (CA-MWCNTs) were synthesized using the aerosol assisted chemical vapor deposition method involving the decomposition ... -
Antifungal Nanocomposites Inspired by Titanate Nanotubes for Complete Inactivation of Botrytis cinerea Isolated from Tomato Infection
(2016)"Antifungal silver nanocomposites inspired by titanate nanotubes (AgTNTs) were successfully evaluated for the effective inactivation of the phytopathogenic fungus Botrytis cinerea within 20 min. One-dimensional H2Ti3O7 ... -
Propiedades fotónicas en nanoestructuras de Au y Au@SiO2
(2018-11)"La principal motivación de este trabajo de investigación es analizar e interpretar la interacción de la luz con arreglos de nanopartículas de distintas geometrías mediante cálculos en la Aproximación de Dipolo Discreto ... -
Enhanced magnetocaloric effect tuning efficiency in Ni-Mn-Sn alloy ribbons
(Elsevier B.V., 2017-11)"The present work was undertaken to investigate the effect of microstructure on the magnetic entropy change of Ni50Mn37Sn13 ribbon alloys. Unchanged sample composition and cell parameter of austenite allowed us to study ... -
Transformation behavior and magnetocaloric effect in Mn1−xCrxCoGe (x = 0.04 and 0.11) melt-spun ribbons tailored by heat treatment
(Elsevier, 2017-12)"Recently, MnNiGe and MnCoGe intermetallic compounds have received a considerable attention due to the coupled tunable martensitic and magnetic transitions as well as giant magnetocaloric effect (MCE) they exhibit. In this ... -
Broad first-order magnetic entropy change curve in directionally solidified polycrystalline Ni-Co-Mn-In
(Elsevier B.V., 2017-12)"We present the thermal dependence of the magnetic entropy change ΔSM(T) across the martensitic transformation for a polycrystalline sample, which was cut from a directionally solidified rod, with a nominal composition ... -
Room temperature ferromagnetism and ferroelectricity in strained multiferroic BiFeO3 thin films on La0.7Sr0.3MnO3/SiO2/Si substrates
(Elsevier B.V, 2017-04)"A novel ferromagnetic state coexisting with ferroelectric ordering at room temperature in strained BiFeO3 (BFO) thin films grown using a sputtering technique on La0.7Sr0.3MnO3/SiO2/Si(100) (LSMO/SOS) substrates is reported. ... -
Propiedades estructurales y magnéticas de aleaciones subnanométricas de FePt
(2018-08)"Las nanoaleaciones binarias, compuestas por metales de transición, han sido objeto de numerosos estudios, ya que se espera que las propiedades de los elementos individuales se acoplen y potencialicen al ser mezclados. Del ... -
H2Ti3O7 nanotubes decorated with silver nanoparticles for photocatalytic degradation of atenolol
(Hindawi Publishing Corporation, 2017)"The photocatalytic degradation/adsorption process of the β-blocker atenolol (ATL) under UV irradiation is described using two types of silver decorated catalysts: silver/titania and silver/titanates. The silver ions were ... -
Highly efficient production of nitrogen-doped multiwalled carbon nanotubes using banded iron formation from the Bundelkhand craton located in the north of India
(2018)"Los polvos de formación de hierro bandeado (FHB) son rocas sedimentarias de la era precámbrica, formadas principalmente por bandas de óxidos de hierro y sílice. Hemos utilizado polvos de FHB del cráter de Bundelkhand, ... -
Cytotoxicity induced by carbon nanotubes in experimental malignant glioma
(Dove Press Ltd, 2017)"Despite multiple advances in the diagnosis of brain tumors, there is no effective treatment for glioblastoma. Multiwalled carbon nanotubes (MWCNTs), which were previously used as a diagnostic and drug delivery tool, have ... -
Síntesis de esponjas de carbono dopadas con nitrógeno mediante deposición química de vapor y su aplicación en remediación ambiental
(2018-08)"La eliminación de contaminantes farmacéuticos en los efluentes de agua se ha realizado utilizando diferentes materiales tales como membranas poliméricas, carbón activado, nanotubos de carbono, nanofibras, carbón poroso, ... -
Estudio teórico experimental de compósitos de Y2O3 -GO
(2018-08)"El Y2O3 es el compuesto mas abundante de este elemento, el cual ha sido estudia- do por sus propiedades cerámicas y electro-ópticas, sin embargo, recientemente se ́ ha comenzado a reportar el uso de este oxido metálico ... -
Magnetic matrices used in high gradient magnetic separation (HGMS): a review
(2017)"HGMS is effective in separating or filtering fine and weakly magnetic particles and widely applied in mineral processing, water treatment, cell and protein purification. The magnetic matrix is a crucial device used in ...