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Listar por palabra clave "Titanium dioxide"

Mostrando ítems 1-20 de 20

A photophysical approach to investigate the photooxidation mechanism of pesticides: Hydroxyl radical versus electron transfer

Marín García, Mª Luisa; Lhiaubet, Virginie Lyria; Santos-Juanes Jordá, Lucas; Soler Escoda, Juan Miguel; Gomis Vicens, Juan; Arques Sanz, Antonio; Amat Payá, Ana María; Miranda Alonso, Miguel Ángel (Elsevier, 2011-03-14)

[EN] The role of hydroxyl radical in different solar photocatalytic processes, namely photo-Fenton, titanium dioxide-based oxidation and organic photocatalysis (triphenylpyrylium) has been investigated. Using a methodology ...
Architecture and phases composition of suspension plasma sprayed alumina titania sub-micrometer-sized coatings

Darut, Geoffrey; Klyatskina, Elizaveta; Valette, Stéphane; Carles, Pierre; Denoirjean, Alain; Montavon, Ghislain; Ageorges, Hélène; Segovia-López, Francisco; Salvador Moya, Mª Dolores (ELSEVIER SCIENCE BV, 2012-01-15)

[EN] Sub-micrometer-sized Al 2O 3-TiO 2 plasma-sprayed coatings exhibit superior performances compared to micrometer-sized ones. Two routes can be implemented to manufacture such finely structured coatings: i) spraying ...
Desarrollo y caracterización de un sensor cromático que determine la presencia de oxígeno en un envase

Raimondo Martínez, Juliana (Universitat Politècnica de València, 2016-09-05)

[ES] El envasado inteligente, es una de las tecnologías más recientes en el envasado de alimentos, que busca informar de algún cambio que se está produciendo en la atmósfera que rodea al alimento y que está relacionado ...
Efecto del TiO2 en las propiedades de tejidos de algodón

Aguilar Vásquez, Beatriz María (Universitat Politècnica de València, 2018-05-07)

[ES] El efecto sobre las propiedades del tejido y la acción autolimpiante del TiO2 utilizando resina acrílica como aglutinante, se ha evaluado en un tejido de algodón utilizando un método de fulardado y curado en seco. Se ...
Electrochemical formation of novel TiO2-ZnO hybrid nanostructures for photoelectrochemical water splitting applications

Sánchez Tovar, Rita; Blasco-Tamarit, E.; Fernández Domene, Ramón Manuel; Villanueva-Pascual, M.; Garcia-Anton, Jose (Elsevier, 2020-04-25)

[EN] In this study, hybrid ZnO-TiO2 nanostructures have been synthesised by means of a simple electrochemical anodisation of titanium and subsequently ZnO electrodeposition. The influence of Zn(NO3)(2) concentration and ...
Enhanced Photodegradation of Synthetic Dyes Mediated by Ag3PO4-Based Semiconductors under Visible Light Irradiation

Pavanello, Alice; Blasco-Brusola, Alejandro; Johnston, Peter F.; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (MDPI AG, 2020-07)

[EN] Four silver phosphate-based materials were successfully synthesized, characterized, and evaluated, together with TiO2, in the photodegradation of synthetic dyes (tartrazine, Orange II, rhodamine, and Brilliant Blue ...
Enhancement of the catalytic activity of supported gold nanoparticles for the fenton reaction by light

Navalón Oltra, Sergio; De Miguel de la Torre, Maykel; Martín González, Roberto; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo (American Chemical Society, 2011)

[EN] Laser flash photolysis of supported gold nanopar-ticles exciting at the surface plasmon band (532 nm) has allowed in the case of Au/CeO 2 and Au/OH-npD (OH-npD: Fenton-treated diamond nanoparticles) detection of ...
Exploring the applicability of solar driven photocatalytic processes to control inestation by zebra mussel

Bernabeu García, Antonio; Vicente Candela, Rafael; Peribañez Lopez, Miguel Angel; Arques Sanz, Antonio; Amat Payá, Ana María (Elsevier, 2011-07)

Dreissena polymorpha (zebra mussel) is an invasive freshwater bivalve mollusc that causes important technical and environmental problems. Titanium dioxide solar photocatalysis was checked for disinfestation of veligers of ...
Functionalization of Cotton by RGO/TiO2 to Enhance Photodegradation of Rhodamine B Under Simulated Solar Irradiation

Landi, S., Jr.; Carneiro, J.O.; Fernandes, F.; Parpot, P.; Molina Puerto, Javier; Cases, F.; Fernández Sáez, Javier; Santos, J.G.; Soares, G.M.B.; Teixeira, V.; Samantilleke, A.P. (Springer-Verlag, 2017)

[EN] Reduced graphene oxide (RGO) and titanium dioxide (TiO2) nanoparticles were immobilized on cotton textile substrates to produce self-cleaning textiles. Varying number of layers of RGO andTiO(2) nanoparticles were ...
Incorporation of photoactive TiO2 in an aluminosilicate inorganic polymer by ion exchange

Gasca-Tirado, José Ramón; Manzano Ramirez, Alejandro; Villaseñor-Mora, Carlos; Muñiz-Villarreal, M. S.; Zaldivar-Cadena, A. A.; Rubio-Ávalos, José Carlos; Amigó Borrás, Vicente; Nava Mendoza, Rufino (Elsevier, 2012-05-01)

In the present paper, it is described a procedure to ion exchange in an aluminosilicate inorganic polymer (geopolymer) in order to incorporate photoactive TiO 2. Metakaolin base geopolymers synthesized at 40 and 90 °C were ...
Influence of operating conditions on ceramic ultrafiltration membrane performance when treating textile effluents

Barredo Damas, Sergio; Alcaina Miranda, María Isabel; GEMMA, MATTEO; Iborra Clar, María Isabel; Mendoza Roca, José Antonio (IWA Publishing, 2011)

[EN] This work studies the performance of three commercial ceramic ultrafiltration membranes (ZrO 2-TiO 2) treating raw effluent from a textile industry. The effect of crossflow velocity at 3, 4 and 5 m s -1 as well as ...
Influence of the irradiation wavelength on the photocatalytic activity of Au-Pt nanoalloys supported on TiO2 for hydrogen generation from water

Montes Navajas, Pedro Manuel; Serra, Marco; García Gómez, Hermenegildo (Royal Society of Chemistry, 2013)

[EN] Seven samples of P25 titania containing Au Pt nanoalloys at constant total metal loading (0.25% wt),very similar particle size (1.5 nm) and different proportions of Pt (0.0, 22.8, 27.8, 35.0, 50.0, 69.0 and 100.0% wt) ...
Influence of Zn(NO3)2 concentration during the ZnO electrodeposition on TiO2 nanosponges used in photoelectrochemical applications

Navarro-Gázquez, Pedro José; Blasco-Tamarit, Encarna; Muñoz-Portero, María José; Solsona-Espriu, Benjamín; Fernández-Domene, Ramón Manuel; Sánchez Tovar, Rita; Garcia-Anton, Jose (Elsevier, 2022-05-15)

[EN] TiO2/ZnO hybrid nanostructures were formed by electrochemical anodization of titanium and subsequently ZnO electrodeposition. Different Zn(NO3)(2) concentrations were used for electrodeposition (10-60 mM). A structural, ...
Microstructure and photocatalytic activity of suspension plasma sprayed TiO2 coatings on steel and glass substrates

Bannier, E.; Darut, G.; Sánchez, E.; Denoirjean, A.; Bordes, M.C.; Salvador Moya, Mª Dolores; Rayón Encinas, Emilio; Ageorges, H. (Elsevier, 2011-10-25)

In this study, TiO 2 coatings were deposited by suspension plasma spraying (SPS) from a commercial TiO 2 nanoparticle suspension on two different substrates: a standard stainless steel and a Pyrex glass. Coatings were ...
Modeling High-Efficiency Quantum Dot Sensitized Solar Cells

González Pedro, María Victoria; Xu, Xuequing; Mora-Sero, Iván; Bisquert, Juan (American Chemical Society, 2010-10)

[EN] With energy conversion efficiencies in continuous growth, quantum dot sensitized solar cells (QDSCs) are currently under an increasing interest, but there is an absence of a complete model for these devices. Here, we ...
Original Approach to Synthesize TiO2/ZnO Hybrid nanosponges used as photoanodes for photoelectrochemical applications

Navarro-Gázquez, Pedro José; Muñoz-Portero, María-José; Blasco-Tamarit, E.; Sánchez-Tovar, Rita; Fernández-Domene, Ramón Manuel; Garcia-Anton, Jose (MDPI AG, 2021-11)

[EN] In the present work, TiO2/ZnO hybrid nanosponges have been synthesized for the first time. First, TiO2 nanosponges were obtained by anodization under hydrodynamic conditions in a glycerol/water/NH4F electrolyte. Next, ...
Reliability of acid-insoluble ash as internal marker for the measurement of digestibility in rabbits

Papadomichelakis, G.; Fegeros, K. (Universitat Politècnica de València, 2020-03-31)

[EN] The present study aimed to evaluate acid-insoluble ash (AIA) as an internal marker for the measurement the coefficient of total tract apparent digestibility (CTTAD) in rabbits through two experiments (E1 and E2). ...
Should TiO2 nanostructures doped with Li+ be used as photoanodes for photoelectrochemical water splitting applications?

Sánchez Tovar, Rita; Blasco-Tamarit, E.; Fernández Domene, Ramón Manuel; Lucas-Granados, Bianca; Garcia-Anton, Jose (Elsevier, 2017)

[EN] Different TiO2 nanostructures, nanotubes and nanosponges, were obtained by anodization of Ti under stagnant and hydrodynamic conditions. Samples were doped with Li+ before and after annealing at 450 degrees C during ...
Synergy between the metal nanoparticles and the support for the hydrogenation of functionalized carboxylic acids to diols on Ru/TiO2

Primo Arnau, Ana María; Concepción Heydorn, Patricia; Corma Canós, Avelino (Royal Society of Chemistry, 2011)

Ruthenium nanoparticles supported on titania are over three times more active than conventional ruthenium on carbon for the hydrogenation of lactic acid. This superior catalytic activity can be due to a combined action of ...
TiO2 Nanostructures for Photoelectrocatalytic Degradation of Acetaminophen

Borràs-Ferrís, Joan; Sánchez Tovar, Rita; Blasco-Tamarit, E.; Muñoz-Portero, María-José; Fernández Domene, Ramón Manuel; Garcia-Anton, Jose (MDPI AG, 2019-04)

[EN] Advanced oxidation processes driven by renewable energy sources are gaining attention in degrading organic pollutants in waste waters in an efficient and sustainable way. The present work is focused on a study of TiO2 ...