Browsing División de Nanociencias y Materiales by Subject "QUÍMICA"
Now showing items 61-80 of 105
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On the correct estimation of the magnetic entropy change across the magneto-structural transition from the Maxwell relation: study of MnCoGeBx alloy ribbons
(Elsevier, 2017)"An accurate calculation of the different magnetocaloric-related magnitudes derived from the temperature dependence of the magnetic entropy change in materials exhibiting first-order magnetocaloric effect is imperative to ... -
One-Pot Synthesis of Anatase, Rutile-Decorated Hydrogen Titanate Nanorods by Yttrium Doping for Solar H2 Production
(American Chemical Society, 2020)"We have prepared yttrium (Y)-doped hydrogen titanate nanorods (HTN) by a microwave-assisted hydrothermal method. Y-doped HTN showed much improved photocatalytic activities for both H2 evolution and dye decomposition. H2 ... -
One-Pot Synthesis of Iron-Modified Zeolite X and Characterization of the Obtained Materials
(MDPI, 2023)Iron inclusion in the composition of the zeolite crystal structure endows it with new and useful properties. However, direct synthesis involving Fe, frequently creates unfavorable conditions that hinder the crystallization ... -
Oxygenated surface of carbon nanotube sponges: electroactivity and magnetic studies
(American Chemical Society, 2019)"We report the synthesis of nitrogen-doped carbon nanotube sponges (N-CNSs) by pyrolysis of solutions of benzylamine, ferrocene, thiophene, and isopropanol-based mixture at 1020 degrees C for 4 h using an aerosol-assisted ... -
Phase transition and magnetocaloric properties of Mn50Ni42−xCoxSn8 (0 ≤ x ≤ 10) melt-spun ribbons
(International Union of Crystallography, 2018)"The characteristics of magnetostructural coupling play a crucial role in the magnetic field-driven behaviour of magnetofunctional alloys. The availability of magnetostructural coupling over a broad temperature range is ... -
Photo-assisted inactivation of Escherichia coli bacteria by silver functionalized titanate nanotubes, Ag/H2Ti2O5H2O
(2017)"One-dimensional titanate nanotubes (H2Ti2O5·H2O) functionalized with silver nanoparticles (AgNPs) exhibited unique properties for the effective inactivation of the Gram-negative Escherichia coli within 45 minutes under ... -
Photoanodes modified with reduced graphene oxide to enhance photoelectrocatalytic performance of B-TiO2 under visible light
(2015)"The effect of reduced graphene oxide (rGO) content in boron-modified TiO2 nanocrystalline films on their photocatalytic activity in phenol oxidation is investigated. Visible-light-active TiO2 modified photoanodes were ... -
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. ... -
Practical mediated-assembly synthesis of silver nanowires using commercial Camellia sinensisextracts and their antibacterial properties
(2018)"Camellia sinensis is a well-known plant used for health purposes due to its high phenolic compound content and antioxidant properties. For the first time, the infusion of green tea has allowed the growth and stabilization ... -
Preparation of Volborthite by a Facile Synthetic Chemical Solvent Extraction Method
(MDPI, 2023)In this work, the extraction of vanadium (V) ions from an alkaline solution using a commercial quaternary ammonium salt and the production of metal vanadates through precipitation stripping were carried out. The crystallization ... -
Production of biodiesel from roasted chicken fat and methanol: free catalyst
(2014)"Transesterification reactions free of catalyst between roasted chicken fat with methanol were carried out in a batch reactor in order to produce biodiesel to temperatures from 120°C to 140°C. Parameters related to the ... -
Promotional effect of Rh nanoparticles on WO3/TiO2 titanate nanotube photocatalysts for boosted hydrogen production
(2018)"In this work, we explore the hydrogen production via the water splitting process on Rh-WO3 photocatalysts supported on nanotubes of TiO2. H2 production tests were performed in a 2-propanol-water solution. The support ... -
Pyrrolic nitrogen-doped multiwall carbon nanotubes using ball-milled slag-SiC mixtures as a catalyst by aerosol assisted chemical vapor deposition
(IOP Publishing, 2020)"We demonstrated that the ball-milled slag-SiC mixture is an effective catalyst to grow pyrrolic nitrogen-doped multiwall carbon nanotubes (N-MWCNTs) by aerosol assisted chemical vapor deposition (AACVD) method. N-MWCNTs ... -
Semiconducting Nanocrystalline Bismuth Oxychloride (BiOCl) for Photocatalytic Reduction of CO2
(MDPI, 2020)"The reduction of CO2 is relevant for the production of compounds as part of the carbon capture and utilization research approaches. Thus, photocatalytic reduction of CO2 over a tailored BiOCl-based photocatalyst (BTEG) ... -
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 ... -
Síntesis de carburos, sulfuros y boruros de renio y su evaluación en la producción de hidrógeno a partir de biomasa
(2019-10)"En esta tesis de doctorado se llevó a cabo la síntesis mecanoquímica de carburos (Re2C (2:1) y Re2C (1:1)), boruros (Re3B y ReB2) y sulfuros de renio (ReS2 (1:2) y ReS2 (2:7)). Estos materiales fueron caracterizados por ... -
Síntesis de materiales a base de renio y sus propiedades catalíticas en la producción de hidrógeno a partir de biomasa
(2015-02)"En este trabajo experimental se sintetizo la fase de carburo de renio (ReC640) y diboruro de renio (ReB640) por molienda mecánica a partir de mezclas de los elementos químicos constitutivos. La fase de Re2C fue obtenida ... -
Síntesis de nanopartículas de SiO2 como potenciales vehículos para administración de fármacos
(2015-11)"Uno de los principales problemas en el área de la salud es la baja eficiencia que presentan los sistemas de administración fármacos usados actualmente. Como resultado en los últimos años ha incrementado el interés en el ... -
Síntesis de nanopartículas metálicas y su aplicación en la reducción de 4-nitrofenol por un consorcio microbiano anaerobio
(2014-12)"Las nanopartículas metálicas de paladio pueden actuar como catalizadores y modificando los catalizadores con la adición de un segundo metal como el cobre aumentan el rendimiento de las reacciones. Para el tratamiento de ... -
Síntesis química de nanorods de Au asistida por iones de Ag+
(2015-12)"La preparación de nanopartículas metálicas, e.g., Au y Ag, tienen una importancia relevante en aplicaciones biomédicas y catalíticas, y el control en la forma y el tamaño son los objetivos buscados por muchos grupos de ...