Exploració per tema "Gold"
Ara es mostren els items 1-20 de 26
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A general approach to fabricate fe3O4 nanoparticles decorated with Pd, Au, and Rh: Magnetically recoverable and reusable catalysts for Suzuki C-C cross-coupling reactions, hydrogenation, and sequential reactions
(2013-09-02)
Article
Accés restringit per política de l'editorialA facile strategy has been explored for loading noble metals onto the surface of ferrite nanoparticles with the assistance of phosphine-functionalized linkers. Palladium loading is shown to occur with participation of both ... -
A straightforward method to prepare supported Au clusters by mechanochemistry and its application in photocatalysis
(Elsevier, 2020-12)
Article
Accés obertReducing the metal particle size on semiconductor-based materials from a few nanometers down to well-dispersed clusters or single atoms has been demonstrated to be an effective strategy to enhance the photocatalytic ... -
Dynamic photocatalytic hydrogen production from ethanol-water mixtures in an optical fiber honeycomb reactor loaded with Au/TiO2
(2014-01-01)
Article
Accés restringit per política de l'editorialCordierite honeycombs loaded with different amounts of Au/TiO2 have been used in an optical fiber photoreactor illuminated with UV LEDs to produce hydrogen from ethanol and water-ethanol mixtures. The photoreactions have ... -
Estudi sobre l'optimització de la concentració d'or i minerals pesants amb concentradors del tipus KC-MD3 i KC-MD7.5
(Universitat Politècnica de Catalunya / Universitat de Barcelona, 2003)
Tesina
Accés obertEls concentradors miners per la neteja de minerals pesants són aparells que utilitzen la força centrífuga i les diferents densitats minerals per seleccionar els minerals més densos (or, zircons, magnetites....). La meva ... -
Gold(I)-complex–titania hybrid photocatalyst for hydrogen production
(2017-09-08)
Article
Accés obertThe integration of TiO2 with a AuI complex containing a thiocoumarin moiety resulted in a very efficient photocatalyst for the generation of H2. The molecular structure of the complex was preserved under the photoreaction ... -
Growth of plasmonic gold nanostructures by electron beam induced deposition
(2007-09)
Article
Accés restringit per política de l'editorialThe authors report on the growth of organometallic dots for optical applications using electron beam induced gold deposition on a transparent substrate. The effects of the substrate material and the deposition parameters, ... -
Hydrogen photoproduction from bio-derived alcohols in an optical fiber honeycomb reactor loaded with Au/TiO2
(2014-05-01)
Article
Accés restringit per política de l'editorialCordierite honeycombs loaded with 1 wt.% Au/TiO2 have been used in an optical fiber photoreactor illuminated with UV LEDs to produce hydrogen at 298 K from aqueous methanol, ethanol, glycerol, bio-ethanol, and bio-glycerol ... -
Hydrogen photoproduction from ethanol-water mixtures over Au-Cu alloy nanoparticles supported on TiO2
(2015-03-01)
Article
Accés obertAu/TiO2, Au0.75Cu0.25/TiO2, Au0.5Cu0.5/TiO2 and Au0.25Cu0.75/TiO2 photocatalysts prepared from pre-formed Au and Au-Cu alloy nanoparticles of controlled composition and size were loaded over ceramic honeycombs (2 mg cm(-2)) ... -
In silico study of substrate chemistry effect on the tethering of engineered antibodies for SARS-CoV-2 detection: amorphous silica vs gold
(Elsevier, 2022-05)
Article
Accés obertThe influence of the properties of different solid substrates on the tethering of two antibodies, IgG1-CR3022 and IgG1-S309, which were specifically engineered for the detection of SARS-CoV-2, has been examined at the ... -
Ligand and support effects on the reactivity and stability of Au38(SR)24 catalysts in oxidation reactions
(2019-10-01)
Article
Accés obertThiolate protected metal nanoclusters are emerging materials for the preparation of atomically defined heterogeneous catalysts. Recently it was revealed that the ligands migrated to the support upon cluster deposition, ... -
Macroporous silicon microreactor for the preferential oxidation of CO
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialA macroporous silicon micromonolith containing ca. 40,000 regular channels of 3.3 μm in diameter per square millimeter has been successfully functionalized with an Au/TiO2 catalyst for CO preferential oxidation (CO-PrOx) ... -
Magnetite-supported palladium single-atoms do not catalyse the hydrogenation of alkenes but small clusters do
(2016-01-01)
Article
Accés obertThe activity of supported noble metal catalysts strongly depends on the particle size. The ultimate small-size limit is the single-atom catalyst (SAC), which maximizes the catalytic efficiency in the majority of the examples. ... -
Mechanochemically activated Au/CeO2 for enhanced CO oxidation and COPrOx reaction
(Elsevier, 2023-08-01)
Article
Accés obertCOPrOx reaction is one of the particularly appealing and cost-effective solutions for the selective oxidation of CO in hydrogen-rich gas streams to meet the stringent requirement of the current electrocatalysts employed ... -
Mineralogy and mineral chemistry of the Au-Ag-Te-(Bi-Se) San Luis Alta deposit, Mid-South Peru
(2023-04-18)
Article
Accés obertA mineralogical and mineral chemistry study was carried out in the San Luis Alta telluride-rich gold deposit, mid-south Peru, to contribute towards determining its formation and improving the ore processing. The San Luis ... -
Nonlinear duffing oscillator model for third harmonic generation
(2015-10-01)
Article
Accés obertWe employ a classical, nonlinear Lorentz-Duffing oscillator model to predict third harmonic conversion efficiencies in the ultrafast regime, from a variety of metal nanostructures, including smooth, isolated metal layers, ... -
Photocatalytic hydrogen production from alcohol aqueous solutions over TiO2-activated carbon composites decorated with Au and Pt
(2022-03)
Article
Accés obertNanocomposites based on titanium dioxide loaded with metal nanoparticles (Au and Pt) and activated carbon were synthesized and tested for hydrogen photogeneration in the gas phase using a mixture of alcohol-water (methanol, ... -
Protocolo para la recuperación de partículas finas de oro utilizando el método de la hidroseparación (HS - 11)
(Universitat Politècnica de Catalunya, 2014-06-14)
Projecte/Treball Final de Carrera
Accés restringit per decisió de l'autor -
Recuperación y valorización de metales mediante resinas de intercambio iónico a partir de residuos sólidos urbanos de incineración
(Universitat Politècnica de Catalunya, 2019-02-07)
Projecte Final de Màster Oficial
Accés obertEl objetivo de este trabajo consiste en estudiar la viabilidad de la recuperación de metales con un alto valor añadido, que pueden presentar cierta peligrosidad para el medio ambiente si no se gestionan de forma adecuada ... -
Room temperature oxidation of formaldehyde on Pt-based catalysts: A comparison between ceria and other supports (TiO2, Al2O3 and ZrO2)
(2015-09-15)
Article
Accés obertPlatinum-based catalysts for the room temperature removal of formaldehyde are prepared on ceria and other supports (TiO2, Al2O3 and ZrO2) for comparison, starting from chloride and nitrate precursors. The behaviour towards ... -
Selective detection of dopamine combining multilayers of conducting polymers with gold nanoparticles
(2014-05-01)
Article
Accés restringit per política de l'editorialElectrodes based on the combination of three-layered films formed by two different conducting polymers and gold nanoparticles have been developed for the selective voltammetric determination of dopamine in mixtures with ...