To reach the goal of prediction of electrochemical behavior from first principles, it appears increasingly evident that an intermediate stage, between ab initio calculation and Monte Carlo or classical molecular dynamics, will be required. Here we report progress on the development of such an intermediate computational method, using a self consistent tight binding approach, and report some prel...

Subduction zone or arc magmas are known to display a characteristic depletion of High Field Strength Elements (HFSE) relative to other similarly incompatible elements, which can be attributed to the presence of the accessory mineral rutile (TiO2) in the residual slab. Here we show that the partitioning behavior of vanadium between rutile and silicate melt varies from incompatible (∼0.1) to comp...

Absorption spectra of anatase and rutile TiO2 in the 150-300 nm region before and after the deposition of Pt nanoparticles were measured. For anatase TiO2, the spectral intensity in the longer wavelength region decreased (>∼210 nm), while that in the shorter wavelength region increased (<∼210 nm). In particular, spectral band intensity in the far-ultraviolet (FUV) region (∼160 nm) was increased...

tio2 nanorods are synthesized by a thermal corrosion. in present work, synthesis of tio2 nanorods in anatase, rutile and ti8o15 phases, by using the sol-gel method and alkaline corrosion are reported. the morphologies and crystal structures of tio2 nanorods are characterized by use of field emission scanning electron microscopy, atomic force microscopy and x-ray diffractometer techniques. the o...

Homogeneous stable suspensions obtained by dispersing dry TiO2 nanoparticles in pure ethylene glycol were prepared and studied. Two types of nanocrystalline structure were analyzed, namely anatase and rutile phases, which have been characterized by scanning electron microscopy. The rheological behavior was determined for both nanofluids at nanoparticle mass concentrations up to 25%, including f...

In this study, TiO2 ceramic oxide film with good passivity, low conductivity and tribological properties was coated on stainless steel (AISI 304) material by sol gel spin coating method. The effect of annealing temperature time the structure films investigated. Ethyl acetoacetate (EAcAc), ethanol as titanium source Tetra-n-butyl orthotitanate (TBT) used for process. thin process, 2600 rpm chose...

Transmission electron microscopy (TEM) has been used to study the rutile TiO2 (100) surface in an oxidizing environment. By changing annealing conditions, TiO2 surfaces with different morphologies are obtained. We report a new centered (2 · 2) surface reconstruction on this surface. Our experimental data indicates that this is a meta-stable, oxygen deficient structure formed as the disordered s...