Needle-shaped rutile inclusions occur in garnet within the quartz-eclogite at Mt. Gongen Sanbagawa belt, central Shikoku. They are approximately 5–25 µm along long axis and typically oriented three directions, each intersecting 120°. This indicates that needle-shaped is a lamella exsolved from garnet. Garnet with needle-rutile restricted to quartz-poor domain of quartz eclogite sample, which co...

This study assessed the radiological health hazards to various body organs of workers working within Transnet Precinct in Richards Bay in Kwazulu-Natal, South Africa due to radionuclide content of mineral ores often stored within the facility. Thirty samples were collected from five mineral ores (rock phosphate, rutile, zircon, coal and hematite) and analyzed for 238U, 234U, 226Ra, 210Pb, 235U,...

The surface properties of biomaterials play a vital role in cell morphology and behaviors such as cell adhesion, migration, proliferation and differentiation. Three different crystal phases of titania film (rutile, anatase and amorphous titania) with similar roughness were successfully synthesized by DC reactive magnetron sputtering. The surface roughness of each film was about 8-10 nm. Primary...

This paper describes high porosity titanium dioxide (TiO2) films deposited via atmospheric pressure chemical vapour deposition (APCVD) using tetraisopropyl titanate at deposition temperatures (Tdep) of 250C and 450C in excess water vapour. Films deposited at low Tdep exhibit a very low refractive index (nfilm) and high porosity (), up to 87% of the bulk rutile phase. High-temperature sinteri...

Practical photocatalysis for degradation of organic pollutants must take into account the influence of other chemicals. Significant Al deposition on titania can occur at naturally occurring concentrations of dissolved Al. This paper reviews the author’s work on the influence of deliberately deposited hydrous oxides of aluminium on the behavior of a ~130 m g rutile TiO2, and then compares the be...

Epitaxial ultra-thin titanium dioxide films of 0.3 to ~7nm thickness on a metal single crystal substrate have been investigated by high resolution vibrational and electron spectroscopies. The data complement previous morphological data provided by scanned probe microscopy and low energy electron diffraction to provide very complete characterisation of this system. The thicker films display elec...

The dynamic hardness of rutile TiO(2) single crystal surfaces was investigated using a nanoindentation technique and the hardness increase was observed only in the near-surface region, possibly due to the volume expansion accompanied by the photoinduced high hydrophilicity.

Photoactive films consisting of pure anatase, brookite or rutile TiO2 were prepared by dip coating from water dispersions obtained by using TiCl4 as the precursor under similar mild experimental conditions.