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...

Nanocrystalline titanium dioxide powder is characterized for phase analysis as well as particle size and its distribution by x-ray diffraction and small angle neutron scattering measurements. Analysis of the SANS data in the momentum transfer range q = 0.1 1.8 nm reveals an average particle size of 24.82 nm in good agreement with the particle size determined earlier by transmission electron mic...

This study was conducted to evaluate the effect of titanium dioxide and titanium oxide foliar application during two growing stage on growth and forage production of maize during 2012 growing season in the research farm of Islamic Azad University of Varamin-Pishva Branch. The experimental design was randomized complete blocks arranged in factorial with four replications. The factors were includ...

The aim of this study was to evaluate effect of foliar application of titanium dioxide nanoparticles on quantitative traits and essential oil, thymol and carvacrol percent of thyme under different levels of water stress. Factorial experiment was used based on a completely randomized design with four replications. Factors included water stress (50, 70 and 90% of field capacity) and titanium diox...

Titanium dioxide (TiO2) nanoparticles were prepared by the sol–gel method and structural, morphological, optical properties investigated at different sintering temperatures of 500, 600, 700, 800, 900°C. A tetragonal structure anatase, mixed (anatase–rutile), rutile phases are observed in X-ray diffraction (XRD) analysis. Pure anatase phase formation occurred 500°C, whereas anatase-to-rutile tra...

The widespread use of titanium dioxide nanoparticles (TiO2NPs) in consumer products has led to an increase of their concentrations in the environment. For reliable determination of their total concentrations, the microwave assisted digestion procedure for the decomposition of nanoscale anatase and rutile was optimized and Ti concentrations were determined by inductively coupled plasma mass spec...

Titanium dioxide (TiO2) nanoparticles, with an average size of about 45 nm, were encapsulated by polystyrene using in situ nitroxide mediated radical polymerization   in the presence of 3-aminopropyl triethoxy silane (APTES) as a coupling agent and 2, 2, 6, 6-tetramethylpiperidinyl-1-oxy  as a initiator. First, the initiator for NMRP was covalently bonded onto the surface of Titanium dioxide na...

This study compared respirable dust and nanoparticle concentrations measured by different sampling devices at a titanium dioxide pigment factory. Respirable particle mass concentrations, nanoparticle concentrations, particle size distribution and particle metallic content were measured at different sampling locations. The sampling results of the Multi-orifice Uniform Deposit Impactor (MOUDI) sh...

Titanium dioxide nanostructures are formed by a simple one-stage method of thermal oxidation titanium in the temperature range 700 - 900 °C. The structures were studied high-resolution electron microscopy and X-ray diffraction. It is shown that, depending on temperature, form crystallites, granules, dendrites TiO2-rutile surface metallic titanium. proposed promising for large-scale creation adv...