Exploració per tema "Photocatalysis"
Ara es mostren els items 41-60 de 65
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Pd/TiO2-WO3 photocatalysts for hydrogen generation from water-methanol mixtures
(2018-10-15)
Article
Accés obertSolar light is inexhaustible, and therefore to take advantage of this energy it is necessary to develop materials capable of absorbing energy in the widest range of the solar spectra. Although TiO2 is one of the most studied ... -
Performance comparison of Ni/TiO2 and Au/TiO2 photocatalysts for H2 production in different alcohol-water mixtures
(2018-11-01)
Article
Accés obertThis study systematically compares the performance of 0.5¿wt% Ni/P25 TiO2 and 2¿wt% Au/P25 TiO2 photocatalysts for H2 production in alcohol-water mixtures under UV excitation. HRTEM, XANES and EXAFS confirmed the presence ... -
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, ... -
Photocatalytic hydrogen production from water-methanol and -glycerol mixtures using Pd/TiO2(-WO3) catalysts and validation in a solar pilot plant
(2021-10-13)
Article
Accés obertThis paper is focused on the photocatalytic hydrogen production on Pd/TiO2(-WO3) catalysts from water-methanol and water-glycerol mixtures under UVA and solar irradiation. The photodeposition method for Pd was studied ... -
Photocatalytic microreactor for the production of hydrogen
(Universitat Politècnica de Catalunya, 2021-07-08)
Projecte Final de Màster Oficial
Accés obertL'objectiu d'aquest projecte de màster és la producció d'hidrogen (H2) a partir de mescles que contenen aigua i etanol (relació molar H2O:C2H5OH=9:1) mitjançant un procés fotocatalític amb nanopartícules de metall/TiO2. ... -
Photocatalytic reduction of CO2
(Universitat Politècnica de Catalunya / Slovenská Technická Univerzita V Bratislave, 2014)
Treball Final de Grau
Accés obertThe concentration of CO2 in the atmosphere is nowadays a worldwide problem, because is one of the gases contributing to global warming. It is a fact that CO2 is increasing every time more and more in the atmosphere due to ... -
Photocatalytic water splitting over Au/TiO2 nanoclusters
(Universitat Politècnica de Catalunya, 2018-02-07)
Treball Final de Grau
Accés obertDeveloping a source of energy which is storable, clean, continuous and renewable is required to meet global energy demand and avoid the possible consequences of the climate change which may be irreversible. Hydrogen is an ... -
Photocatalyzed hydrogen evolution from water by a composite catalyst of NH2-MIL-125(Ti) and surface nickel(II) species
(2016-09-01)
Article
Accés obertA composite of the metal–organic framework (MOF) NH2-MIL-125(Ti) and molecular and ionic nickel(II) species, catalyzed hydrogen evolution from water under UV light. In 95 v/v¿% aqueous conditions the composite produced ... -
Photoproduction of hydrogen in microreactors: catalytic coating or slurry configuration?
(2020-01-01)
Article
Accés obertA quartz microreactor containing 28 microchannels of 500 µm width and 105 mm length has been used to photoproduce hydrogen from liquid water-ethanol using an Au/TiO2 photocatalyst and UV light. The photomicroreactor has ... -
Photovoltaic approach to enhance photocatalytic hydrogen production
(Universitat Politècnica de Catalunya, 2021-07-05)
Treball Final de Grau
Accés restringit per acord de confidencialitatPhotocatalytic hydrogen production has been broadly and largely studied as a possible future largescale clean fuel production. Among others, Titania nanoparticles have been the main semiconductor used for the photocatalytic ... -
Porous NiTiO3/TiO2 nanostructures for photocatatalytic hydrogen evolution
(Royal Society of Chemistry (RSC), 2019-01-01)
Article
Accés obertWe present a strategy to produce porous NiTiO3/TiO2 nanostructures with excellent photocatalytic activity toward hydrogen generation. In a first step, nickel-doped TiO2 needle bundles were synthesized by a hydrothermal ... -
Preparation and photocatalytic activity of Au/TiO2 lyogels for hydrogen production
(2018-01-01)
Article
Accés restringit per política de l'editorial -
Production of hydrogen by ethanol photoreforming on TiO2 - based multimetallic catalysts
(Universitat Politècnica de Catalunya, 2022-07-04)
Projecte Final de Màster Oficial
Accés obertL'objectiu d'aquest projecte final de màster és la producció d'hidrogen (H2) a partir d'una barreja d'aigua (H2O) i etanol (EtOH) mitjançant un procés fotocatalític usant TiO2 decorat amb tres metalls diferents actuant com ... -
Promising photocatalysts based on nanoshaped TiO2- rGO composite doped with metals (Pt and Cu) for hydrogen photoproduction
(Elsevier, 2022-12-01)
Article
Accés restringit per política de l'editorialPhotocatalysts based on TiO2 and its modification have become popular as promising materials for the sustainable photoproduction of hydrogen. In this work, novel Pt - Cu - TiO2 composites with different TiO2 nanoshapes and ... -
Reusable photocatalytic optical fibers for underground, deep-sea, and turbid water remediation
(2018-02-21)
Article
Accés obertAn approach for underground, deep, and turbid water remediation is presented based on optical fibers with a photocatalytic coating. Thus, photocatalytic TiO2 P25 nanoparticles immobilized in a poly(vinylidene difluoride) ... -
Silicone microreactors for the photocatalytic generation of hydrogen
(2016-09-15)
Article
Accés obertA silicone microreactor with 500 mu m-width microchannels coated with a Au/TiO2 photocatalyst was manufactured and tested for the photocatalytic generation of hydrogen from gaseous water-ethanol mixtures under dynamic ... -
Simulació i optimització del procés Foto-Fenton
(Universitat Politècnica de Catalunya, 2018-10-30)
Treball Final de Grau
Accés restringit per decisió de l'autorEn aquest projecte es pretén realitzar una breu descripció dels Processos d’oxidació avançats (POAs), més en concret, la reacció Fenton i Foto-Fenton. Els resultats experimentals obtinguts en aquest tipus de processos han ... -
Solar-to-fuels-Research: Charge Transfer, SternVolmer, and Photocatalytic activity study of [Fe-p- (TMA)]-CNQD Hybrid Catalyst
(Universitat Politècnica de Catalunya, 2022-10-28)
Treball Final de Grau
Accés restringit per acord de confidencialitat
Realitzat a/amb: Chalmers tekniska högskola -
Solution-based synthesis and processing of Sn- and Bi-doped Cu3SbSe4 nanocrystals, nanomaterials and ring-shaped thermoelectric generators
(Royal Society of Chemistry, 2017)
Article
Accés obertCopper-based chalcogenides that comprise abundant, low-cost, and environmental friendly elements are excellent materials for a number of energy conversion applications, including photovoltaics, photocatalysis, and ... -
Solution-processed ultrathin SnS 2 -Pt nanoplates for photoelectrochemical water oxidation
(2019-02-20)
Article
Accés obertTin disulfide (SnS2) is attracting significant interest due to the abundance of its elements and its excellent optoelectronic properties in part related to its layered structure. In this work, we detail the preparation of ...
