Listar por tema "TiO2"
Mostrando ítems 1-20 de 20
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Comparison of freeze drying and spray drying to obtain porous nanostructured granules from nanosized suspensions
Elsevier (2012)This work studies the spray drying and freeze drying of different nanosized ceramic materials and the physicochemical characteristics of the obtained granules. Colloidal suspensions of alumina, titania, and a 87/13 mixture ... -
Dispersion of mixtures of submicrometer and nanometre sized titanias to obtain porous bodies
Elsevier (2013-12)The stability and rheological behaviour of bimodal titania suspensions was studied. Bimodal mixtures were prepared by mixing nanosized TiO2 powders with an average primary size of ∼20–40 nm and surface area of ∼50 m2 g−1 ... -
Dispersion of TiO2nanopowders to obtain homogeneous nanostructured granules by spray-drying
Elsevier (2011)This work deals with the dispersion and stabilisation of nanosized TiO2 particles in an aqueous medium as a first step in the preparation of spray-dried nanostructured powders. A colloidal route leading to the production ... -
Enhancement of Efficiency in Quantum Dot Sensitized Solar Cells Based on CdS/CdSe/CdSeTe Heterostructure by Improving the Light Absorption in the VIS-NIR Region
Elsevier (2017-09-01)In this work, we demonstrate an enhancement of photocurrent in QDSSCs based on CdS (QDs)/CdSe Quantum rods (QRs)/CdSeTe (QDs) heterostructure due to the increased photon harvesting in the VIS-NIR region. The photo-conversion ... -
Estudis teòrics de clusters, superfícies i cristalls d'òxids metàl.lics. Propietats estructurals, electròniques i catalítiques
Universitat Jaume I (2001-06-27)La present tesi doctoral tracta la modelitzacio de diferents estats de la materia: clusters o agregats, superficies i cristalls d'oxids metal.lics. Els metodes disponibles per abordar cada sistema han estat breument descrits, ... -
Facile kinetics of Li-ion intake causes superior rate capability in multiwalled carbon nanotube@TiO2 nanocomposite battery anodes
Elsevier (2014-12)Nanotechnology produces hybrids with superior properties than its individual constituents. Here MWCNT@TiO2 composites have been synthesized by controlled hydrolysis of titanium isopropoxide over MWCNT, to be incorporated ... -
Low-temperature processed electron collection layers of graphene/TiO 2 nanocomposites in thin film perovskite solar cells
American Chemical Society (2014)The highest efficiencies in solution-processable perovskite-based solar cells have been achieved using an electron collection layer that requires sintering at 500 °C. This is unfavorable for low-cost production, applications ... -
Microstructure and photocatalytic activity of APS coatings obtained from different TIO2 nanopowders
Elsevier (2013-04)In recent years, intense research has shown that thermal spray techniques, especially atmospheric plasma spraying (APS), can be used to obtain nanostructured TiO2 coatings with effective photocatalytic activity. This ... -
Microstructure and photocatalytic activity of suspension plasma sprayed TiO2 coatings on steel and glass substrates
Elsevier (2011-10-25)In this study, TiO2 coatings were deposited by suspension plasma spraying (SPS) from a commercial TiO2 nanoparticle suspension on two different substrates: a standard stainless steel and a Pyrex glass. Coatings were sprayed ... -
Nano-enabled photovoltaics. Progress in materials and methodologies
American Chemical Society (2013)Nanoenabled photovoltaics consist of a family of related approaches to make solar cells that use nanosized material elements, involving a combination of inorganic and organic components and hard and soft matter, including ... -
Nanoindentation study of the mechanical and damage behaviour of suspension plasmasprayed TiO2 coatings
Elsevier (2012-01)TiO2 coatings can be used as self-cleaning surfaces owing to their photocatalytic and hydrophilic properties. Suspension plasma spray (SPS) has proven to be a feasible and cheap technique for producing self-cleaning surfaces ... -
PEDOT nanotube arrays as high performing counter electrodes for dye sensitized solar cells: study of the interactions among electrolytes and counter electrodes
Wiley (2011-10)PEDOT nanotube arrays present a better catalytic activity with I−/I3− redox than standard platinized counter electrodes used for dye sensitized solar cells exhibiting thereby a photoconversion efficiency as high as 8.3%. ... -
Plasmonic versus catalytic effect of gold nanoparticles on mesoporous TiO2 electrodes for water splitting
Elsevier (2014-10)Solar water splitting with metal oxide semiconductors constitutes a promising approach to the conversion of solar energy into chemical energy stored in the atomic bonds of hydrogen molecules. In the present study, we ... -
Preparation of high solids content nano-titania suspensions to obtain spray-dried nanostructured powders for atmospheric plasma spraying
Elsevier (2012)Nanosized TiO2powder with an average primary size of ∼20 nm and surface area of ∼50 m2/g (Aeroxide®P25, Degussa-Evonik, Germany) was used as starting material. A colloidal titania suspension from the same supplier was also ... -
Relationship between certain ceramic roofing tile characteristics and biodeterioration
Elsevier (2011)This paper examines the relationship of certain red ceramic roofing tile properties to roofing tile biodeterioration. The following properties were studied: apparent porosity, roughness, and the presence or absence of two ... -
Revestimentos cerâmicos: acima e além das aplicações tradicionais
Associação Brasileira de Cerâmica (2008)Nos últimos anos os revestimentos cerâmicos têm seguido a mesma tendência de inúmeros outros produtos dos chamados setores industriais tradicionais: a busca de novos usos e aplicações, que permitam ampliar seus mercados ... -
Role of the Selective Contacts in the Performance of Lead Halide Perovskite Solar Cells
American Chemical Society (2014-01)The effect of electron- and hole-selective contacts in the final cell performance of hybrid lead halide perovskite, CH3NH3PbI3, solar cells has been systematically analyzed by impedance spectroscopy. Complete cells with ... -
The Swift Surge of Perovskite Photovoltaics
American Chemical Society (2013)The breakthrough early 1990s dye sensitization of mesoscopic TiO2 films along with a regenerative iodide redox couple led to the explosive growth of dye-sensitized solar cell (DSC) research. The pioneering work of Grätzel ... -
Ultrafast characterization of the electron injection from CdSe quantum dots and dye N719 co-sensitizers into TiO2 using sulfide based ionic liquid for enhanced long term stability
Elsevier (2013)Combination of inorganic quantum dots (QDs) and organic/metallorganic dyes as supracollectors nanocomposites could have an important role on the development of efficient photovoltaic devices based on the synergistic action ... -
WO3/BiVO4: impact of charge separation at the timescale of water oxidation
Royal Society of Chemistry (2019-01-16)The four hole oxidation of water has long been considered the kinetic bottleneck for overall solar-driven water splitting, and thus requires the formation of long-lived photogenerated holes to overcome this kinetic barrier. ...