ListarDivisión de Nanociencias y Materiales por tema "QUÍMICA"
Mostrando ítems 81-100 de 105
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Síntesis y caracterización de polialquilendioxitiofenos por el método de oxidación química
(2015)"En este trabajo se realizó la síntesis y caracterización de algunos politiofenos conductores, específicamente los que presentan sustituyentes dialcoxi en su estructura denominados como polialquilendioxitiofenos, obteniendo ... -
Stabilisation of small mono- and bimetallic gold–silver nanoparticles using calix[8]arene derivatives
(Royal Society of Chemistry, 2018)"In this paper, we report the synthesis of octa(hydroxy)-octa(mercaptobutoxy)calix[8]arene and its use as a stabiliser of nanoparticles (NPs). We show that the reduction of gold and/or silver ions in the presence of this ... -
Structures and electronic properties of TinV (n = 1–16) clusters: first-principles calculations
(American Chemical Society, 2016)"Structures and electronic properties of TinV (n = 1–16) clusters have been investigated using density functional theory with the generalized gradient approximatio. The calculations have shown that the TinV clusters favor ... -
Study of the presence of spherical deformations on the Al top electrode due to electroforming in rewritable organic resistive memories
(Royal Society of Chemistry, 2017)"Physical deformations are observed at the top electrodes during the electroforming process in Al/PEDOT: PSS + nitrogen doped multiwalled carbon nanotube (N-MWCNTs)/Al rewritable resistive memory devices. These physical ... -
Surface modification of TiO2 with Ag nanoparticles and CuO nanoclusters for application in photocatalysis
(American Chemical Society, 2016)"Ag and CuO nanoparticles (NPs) synthesized on the surface of commercial TiO2 (P25) by radiolytic reduction were characterized by diffuse reflectance spectroscopy (DRS), transmission electron microscopy (TEM), high-angle ... -
Synthesis and characterization of GaN rods prepared by ammono-chemical vapor deposition
(2012-04)"GaN rods were deposited by chemical vapor deposition (CVD) onto sapphire (0 0 0 1) and amorphous quartz. The reactive Ga species in vapor the phase was formed with NH4Cl and gallium. The unidirectional growth was catalyzed ... -
Synthesis and Characterization of α-Al2O3/Ba-β-Al2O3 Spheres for Cadmium Ions Removal from Aqueous Solutions
(MDPI, 2022)"The search for adsorbent materials with a certain chemical inertness, mechanical resistance, and high adsorption capacity, as is the case with alumina, is carried out with structural or surface modifications with the ... -
Synthesis and magnetocaloric characterization of rapidly solidified ErMn2 melt-spun ribbons
(Elsevier, 2017)"We have fabricated melt-spun ribbons of nominal composition ErMn2 and studied their phase constitution and magnetocaloric (MC) properties by X-ray diffraction, scanning electron microscopy (SEM), magnetization and heat ... -
Synthesis of a PVA drug delivery system for controlled release of a Tramadol–Dexketoprofen combination
(Springer, 2021)"The local administration of analgesic combinations by means of degradable polymeric drug delivery systems is an alternative for the management of postoperative pain. We formulated a Tramadol–Dexketoprofen combination (TDC) ... -
Synthesis of carbon nano-onions doped with nitrogen using spray pyrolisis
(Elsevier, 2018)"In this work, we have synthesized carbon nano-onions (CNOs) doped with nitrogen and iron carbide core. These nanostructures were synthesized pyrolysing various alcohol-benzylamine reaction mixtures. These CNOs showed a ... -
Synthesis of hollow carbon spheres by chemical activation of carbon nanoparticles for their use in electrochemical capacitor
(Elsevier, 2022)"Naphthalene combustion has been used to synthesize grams per hour of solid carbon spheres (CS). The carbon soot was activated by acid treatment consisting in a mixture of HNO3 and H2SO4 (1/3 v/v) to produce hollow carbon ... -
Synthesis of protonated titanate nanotubes tailored by the washing step: Effect upon acid properties and photocatalytic activity
(2017)"In this work, the acid and photocatalytic properties of titanate nanotubes (NTs) were surveyed. The surface acidity of the NTs was characterized by FTIR with lutidine and pyridine. The photocatalytic degradation of phenol ... -
Synthesis of ZnMn2O4 nanoparticles by a microwave-assisted colloidal method and their evaluation as a gas sensor of propane and carbon monoxide
(MDPI, 2018)"Spinel-type ZnMn2O4 nanoparticles were synthesized via a simple and inexpensive microwave-assisted colloidal route. Structural studies by X-ray diffraction showed that a spinel crystal phase of ZnMn2O4 was obtained at a ... -
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 ... -
Synthesis, characterization, and sensor applications of spinel ZnCo2O4 nanoparticles
(MDPI, 2016-12)"Spinel ZnCo2O4 nanoparticles were synthesized by means of the microwave-assisted colloidal method. A solution containing ethanol, Co-nitrate, Zn-nitrate, and dodecylamine was stirred for 24 h and evaporated by a microwave ... -
Tailoring thermomechanical treatment of Ni-Fe-Ga melt-spun ribbons for elastocaloric applications
(Elsevier, 2019)"In the present work, the structural, mechanical and shape memory properties of Ni55Fe16Ga29 (at.%) melt-spun ribbons have been studied with a prospective of application in the elastocaloric devises. Particularly, a special ... -
The role of silver nanoparticles functionalized on TiO2 for photocatalytic disinfection of harmful algae
(2015)"Silver loaded TiO2 samples were prepared by photodeposition of different amounts of Ag+ ions over commercial titanium dioxide (Evonik TiO2 P25) in aqueous media without the presence of sacrificial agents. The obtained ... -
Transformation behavior and inverse caloric effects in magnetic shape memory Ni44-xCuxCo6Mn39Sn11 ribbons
(2017-10)"An influence of the Cu doping on structural, magnetic and thermoelastic properties of the Heusler Ni44-xCuxCo6Mn39Sn11 (x = 1–4 at%) ribbons has been investigated. It is found that the addition of Cu stabilizes austenite ... -
Transformation process dependent magnetocaloric properties of annealed Ni50Mn18Cu7Ga25 ribbons
(Elsevier, 2017)"The properties related to magnetocaloric effect (MCE) of annealed Ni50Mn18Cu7Ga25 ribbons were studied in connection with their microstructural features and magnetostructural transformations. The differences in magnetic ... -
Transformation temperatures and electrochemical behavior of polycrystalline Fe-Doped Ni-Mn-Ga and Co-Ni-Ga Alloys
(ESG, 2018)"The effect of Fe addition on martensitic transformation temperatures and electrochemical behavior was studied in polycrystalline Ni51.4Mn24.8-XGa23.8FeX alloys (1<x<2.2) and Co38.3Ni32.1Ga29.6 as alternative to Ni-Mn-Ga ...