TiO2 has been investigated as an alternative anode material candidate for lithium-ion batteries several years now due to its advantageous safety and rate capability in combination with nontoxicity abundance. Herein, the synthesis via laser pyrolysis is reported, which allows single-step, industrial-scale realization of carbon-coated nanoparticles. The modification parameters enables variation r...

Control of Ag electro chemical migration is crucial for long–term reliability electrical components in high–voltage applications. In this work, Cu was bonded onto an AlN substrate at temperatures between 650 °C and 950 1 h using a free Cu–P–Sn–Ni brazing filler metal with Ti as active addition. The interfacial structure the mechanical properties bond were both investigated. Three different phas...

We propose a scheme to enhance near-UV band absorption of a rutile TiO(2) nanoparticle by placing Au nanoparticles in its neighborhood. The discrete-dipole approximation method was employed to calculate the absorption spectrum of pure rutile TiO(2) and that of TiO(2) mixed with Au nanoparticles. The results indicate that pure rutile TiO(2) has its maximum absorption located in the deep-UV band....

The symmetric chain Pt-TiO -Pt was studied by means of complex impedance spectroscopy at T = 1273 K for pure and chromium-doped rutile in the partial pressure of oxygen range from 10 to 1 atm. The isothermal variations of electronic conductivity of rutile doped with 1 to 5 % atoms Cr as a function of P were interpreted in terms of point defects by the model of mixed-valence chromium. The compar...

Abstract Different phase compositions of mesoporous nanocrystalline TiO 2 (meso-nc-TiO ), comprised anatase (16–100%), rutile (0–70%) and brookite (0–52%) were obtained by sol–gel synthesis with or without hydrothermal treatment (HTT) means titanium tetrabutoxide dibenzo-18-croun-6 as structure-forming agent in the presence HCl. It was shown, that small amounts surfactant and/or lanthanum salt ...

The application of pressure in solid-state synthesis provides a route for the creation of new and exciting materials. However, the onerous nature of high-pressure techniques limits their utility in materials discovery. The systematic search for novel oxynitrides-semiconductors for photocatalytic overall water splitting-is a representative case where quench high-pressure synthesis is useful and ...

In this work, the development of a new crystallization technique is reported, using nitrogen plasma (AC) to obtain nanostructured anatase and rutile from amorphous titanium oxide (TiO2). This methodology increases throughput and minimizes thermal effects. Nanostructured amorphous TiO2 was obtained by the sol-gel method and subsequently subjected to AC treatment, at a controlled pressure, applyi...

-The effects of doping and uniaxial stress on the structural and magnetic properties of V02 are reviewed. Important electron-electron correlation effects are deduced : (i) in the metallic phase from the results obtained in V I ~ N ~ ~ O ~ alloys, (ii) in the insulating phases of pure V02 at ambiant pressure (MI), under uniaxial stress or in the presence of Cr impurities (T and M2). Discovered i...

In this experimental study, aerosol methods for producing titanium dioxide powders and increasing our knowledge of particle and crystal formation have been developed. Powders and ultrafine particles of titanium oxide were produced by an aerosol droplet decomposition route in tubular laminar flow reactors in air and nitrogen atmospheres. Reactor temperatures up to 1500°C were used with residence...