Search results for "Titan"
showing 10 items of 1109 documents
CCDC 198193: Experimental Crystal Structure Determination
2004
Related Article: Z.Janas, L.B.Jerzykiewicz, K.Przybylak, P.Sobota, K.Szczegot|2004|Eur.J.Inorg.Chem.||1639|doi:10.1002/ejic.200300768
High-quality superconducting titanium nitride thin film growth using infra-red pulsed laser deposition
2018
Superconducting titanium nitride (TiN) thin films were deposited on magnesium oxide, sapphire and silicon nitride substrates at 700 °C, using a pulsed laser deposition (PLD) technique, where infrared (1064 nm) pulses from a solid-state laser were used for the ablation from a titanium target in a nitrogen atmosphere. Structural studies performed with x-ray diffraction showed the best epitaxial crystallinity for films deposited on MgO. In the best films, superconducting transition temperatures, T C, as high as 4.8 K were observed, higher than in most previous superconducting TiN thin films deposited with reactive sputtering. A room temperature resistivity down to ~17 μΩ cm and residual resist…
Study of morphology, mechanical properties and thermal degradation of titania-polycarbonate nanocomposites as function of crystalline phase and amount
2013
Titania nanoparticles were prepared using a sol–gel method and calcination at 2008C and 6008C to obtain anatase and rutile phases, respectively. The obtained powders were used to prepare polycarbonate (PC)-titania nanocomposites by melt compounding. The effect of different crystalline phases and amounts of titania, in the range 1–5 wt%, on the morphology, mechanical properties, and thermal degradation kinetics of PC was investigated. The results show that the filler modified the plasticity or rigidity of the polymer and influenced the degradation kinetics, in different ways depending on the type and amount of titania.
Photocatalytic partial oxidation of propylene in the presence of mesoporous organosilane-modified titanias
2014
Titania-Silica Mesoporosa per l’ossidazione Parziale Fotocatalitica di Propilene in Regime Gas-Solido
2013
DINAMICA DELL’ACQUA SULLA SUPERFICIE DI UN BIOSSIDO DI TITANIO NANOSTRUTTURATO SINTETIZZATO IN LABORATORIO
2013
Un campione biossido di titanio sintetizzato in laboratorio è stato ottenuto mediante idrolisi di TiCl4 in acqua deionizzata (rapporto in volume 1:10) a temperatura ambiente. Dopo 12 h di agitazione la soluzione trasparente è stata portata all’ebollizione per 0.5 h per ottenere la sospensione finale. La sospensione è stata quindi seccata alla temperatura di 50°C per ottenere il catalizzatore in polvere. Successivamente, la polvere così ottenuta è stata lavata e centrifugata diverse volte allo scopo di ridurre fino a valori trascurabili la concentrazione di ioni cloruro nell’acqua di lavaggio. Il catalizzatore così ottenuto è stato denominato HP0.5 (Home Prepared bollito per 0.5 h) [1]. Un g…
New Insights into Segmental Packing, Chain Dynamics and Thermomechanical Performance of Aliphatic Polyurea Composites: Comparison between Silica Oxid…
2021
Polyurea (PU) is intrinsically reinforced by its microphase-separated morphology, giving its excellent mechanical properties. In this study, it is shown how a high-index PU formulation applies easy diffusion of hard segments into the soft phase of the PU matrix and tune its chain mobility. Moreover, the interaction of micro (>100 nm), nano (<100 nm) fillers with the microdomains and their thermomechanical properties are unraveled. Herein, nanosilica oxide (NS) and micro titanium (III) oxide (Ti2O3) are incorporated at low loadings into a solvent-free two-component aliphatic PU via insitu polymerization. While NS achieves an interfacial interaction with urea groups and forms a tight ha…
Combination of Photocatalysis and Ozonation for the treatment of Contaminated Water Containing Bromide Ions
2013
The influence of the catalyst on the photacatalytic synthesis of vanillin
2014
Carbon Nitride-Based Catalysts for High Pressure CO2 Photoreduction
2022
In the current research, the productivity of CO2 photoreduction has been boosted by performing the reaction in an innovative photocatalytic reactor, which allows for operation up to 20 bar. A set of photocatalysts were used, including three types of pristine TiO2, i.e., one commercially prepared (Evonik P25), one home-prepared by flame spray pyrolysis (FSP), and one obtained by the hydrolysis of TiCl4 (TiO2exCl), a bare thermo-exfoliated carbon nitride (C3N4-TE), and binary materials composed of TiO2 and C3N4-TE. The photoreduction was carried out in water at pH 14 and in the presence of Na2SO3 as a hole scavenger. Hydrogen and very small amounts of CO were detected in the head space of the…