A5086611109- Advanced Photocatalysis Techniques
- Luminescence Properties of Advanced Materials
- Recycled Aggregate Concrete Performance
- Innovations in Concrete and Construction Materials
- Recycling and utilization of industrial and municipal waste in materials production
- Magnetic and transport properties of perovskites and related materials
- Laser-induced spectroscopy and plasma
- Advanced Condensed Matter Physics
- Crystal Structures and Properties
- Mineralogy and Gemology Studies
- TiO2 Photocatalysis and Solar Cells
- Concrete and Cement Materials Research
- Innovative concrete reinforcement materials
- Microwave Dielectric Ceramics Synthesis
- Glass properties and applications
- Perovskite Materials and Applications
- Adsorption and biosorption for pollutant removal
- Advanced oxidation water treatment
- Multiferroics and related materials
- Atomic and Molecular Physics
- Building materials and conservation
- Ferroelectric and Piezoelectric Materials
- Solid-state spectroscopy and crystallography
- Hygrothermal properties of building materials
- Nonlinear Optical Materials Research
Universidad Politécnica de Madrid
2015-2024
Universidad Técnica Particular de Loja
2016
Polytechnic University of Puerto Rico
2006
Instituto de Ciencia de Materiales de Madrid
2005
Consejo Superior de Investigaciones Científicas
2005
Universidad Complutense de Madrid
1992-2005
CoFe layered double oxide (CoFe LDO) anchored on g-C3N4 was prepared by mixing appropriate amounts of layer hydroxide and melamine at moderate synthesis temperatures. The resulting LDO/g-C3N4 composite has superior properties in peroxymonosulfate (PMS) activation, remarkable activity catalyzing paracetamol degradation. It been able to degrade 10 mg/L less than min darkness using 0.2 g/L catalyst 0.5 mM PMS dosages. effects dosage, initial pH coexisting anions were also investigated....
The ferromagnetic zircon-type phase of ${\mathrm{GdCrO}}_{4}$ presents high values for the magnetocaloric (MC) parameters. This compound has large isothermal entropy changes $\mathrm{\ensuremath{\Delta}}{S}_{T}$ under magnetic field action in a wide temperature range, from 5 to 35 K, reaching maximum $|\mathrm{\ensuremath{\Delta}}{S}_{T}|=29.0\ifmmode\pm\else\textpm\fi{}0.1\phantom{\rule{0.28em}{0ex}}\mathrm{J}/\mathrm{kg}\phantom{\rule{0.16em}{0ex}}\mathrm{K}$ at 22 increment...
We report the magnetic properties and structure of zircon-type compound ${\mathrm{GdVO}}_{4}$, together with isostructural ${\mathrm{NdVO}}_{4}$. At $T\ensuremath{\simeq}2.5$ K, ${\mathrm{GdVO}}_{4}$ undergoes a phase transition to antiferromagnetic ${G}_{z}$, driven mainly by exchange interactions, while anisotropy dipolar interactions are minor contributions. Near liquid-helium boiling temperature, magnetocaloric effect is nearly as large that structurally closely related...
The present study deals with a characterization of metakaolin pozzolanic activity and its chemical character exhibited in the O rdinary P ortland C ement ( OPC ) blends by means Transmission Electron Microscopy (TEM) S elected‐ A rea E lectron D iffraction (SAED) techniques principally. Metakaolin sample was prepared calcination kaolin rock G uadalajara, pain) at 780°C. Two different composition from tricalcium aluminate content point view were chosen cement series elaborated then submitted...
This research aims to study mechanical behaviour and relevant properties of masonry mortars fabricated using fine recycled aggregate in different mixture proportions. Fine aggregates samples originated from the ceramic concrete recycling process coming two plants Madrid region have been used. Tests were performed 1:3:0.5 volumetric cement-to-aggregate-to-water ratio. Standardized sand with replacement percentages were: 10%, 15%, 25%, 35% 45%. A continuous size distribution curve can be...
One of the main challenges for environmental sciences today is effective treatment dye-laden industrial effluents. This work aimed to study potential an untreated (natural occurring clayey composite) red clay (RC) adsorption a cationic dye Basic Navy Blue 2RN (CNB) and anionic Drimaren Yellow CL-2R (ADY). We evaluated effect pH, concentration, adsorbent concentration on removal effectiveness absorption process. Also, we studied process by analyzing feasibility several known isotherms kinetic...
In this work, the treatment of wastewater polluted with contaminants emerging concern is evaluated by heterogeneous photocatalysis TiO2. Titanium plates are anodized different experimental conditions, and influence these conditions on catalytic performance factorial design experiments. The formation TiO2 nanotubes in anatase form sought for photocatalysts high active surface. Thus, electrolyte used anodization process (NH4F/H2O ethylene glycol or H2SO4 water), potential ramp (2 – 4 V min−1),...
nvironmental protection involves the reuse of construction and demolition waste. In order to improve recycling, waste from laminated plasterboards is used in cement gypsum boards manufacture.This article analyzes use ground burnt plasterboard (BLG) mixed with thick (TG). Physical-mechanical characterization superficial hardness mechanical strength has been performed on different batches plaster powder materials BLG particle sizes determine its suitability. Coarse were preferred reduce...
The pure and cerium doped sodium bismuth titanate inorganic powders were synthesized by solid state reaction method. presence of rhombohedral phase was observed in NBT compounds. At 1200 °C, the 5% compound forms single perovskite phase. samples x = 0.10 0.15 heat treated to 1350 binary phases with oxides observed. X-ray diffraction, fourier transform infrared spectroscopy, reflectance spectra, differential thermal analysis thermo gravimetric used analyze various properties samples....
The presence of hazardous chemicals in wastewater produced by industrial activities and human metropoles is threating the availability safe drinking water. development a multifunctional material coupling adsorption photocatalytic activity hereby particularly promising for removal pollutants. We have proved catalytic NiFe2O4-layered double hydroxide (LDH) composite through degradation methyl orange (MO) at room temperature under visible light. This enhanced using set small light-emitting...
This article presents the results of a research project which studies feasibility substituting -in cement mortars- most commonly used lightweight aggregates in Spanish building constructions (i.e. expanded clay), by waste from olive industry. Spain is world's largest producer oil and olives, being therefore main olive-stone waste. These stones are currently as biomass. To determine viability substitution, an experimental plan was designed. The objective this to add three different stone...
Se ha sintetizado titanato de bismuto puro y dopado con cerio, por el método reacción estado sólido. observado la presencia fase romboédrica en los o fases binarias cerio óxidos función del contenido Ce temperatura calcinación. Las muestras dopadas 0,05 se someten a un tratamiento térmico hasta 1.200 °C, dando lugar una perovskita simple. contenidos 0,10 0,15 son tratadas 1.350 °C cerio. han caracterizado estos materiales mediante difracción rayos X, espectroscopia infrarroja transformada...
The influence of particle size in both the structure and thermochromic behavior 4H-SrMnO3 related perovskite is described. Microsized SrMnO3 suffers a structural transition from hexagonal (P63/mmc) to orthorhombic (C2221) symmetry at temperature close 340 K. distortion due tilting corner-sharing Mn2O9 units building 4H type. When decreases, becomes sharper reaching its maximal degree ∼125 These changes promote modification electronic phase originating observed color change. nano-SrMnO3...