非表示:
キーワード:
TITANIUM-DIOXIDE; SOLAR-CELLS; PHOTOCATALYTIC OXIDATION; SIZE QUANTIZATION; ANATASE TIO2; SEMICONDUCTOR; FILMS; PRECIPITATION; NANOCRYSTALS; POLYMER
要旨:
TiO2 nanoparticles have been synthesized at room temperature using a simple chemical precipitation route. Particles were further coated with polymer. Detailed structural analysis of the particles has been carried out. Wide-angle X-ray scattering (WAXS) and transmission electron microscopy (TEM) confirm that "as-synthesized" particles as well as annealed particles are nanoparticles having pure rutile phase. Thermal annealing at 1000 degreesC of 4.2 nm particles led to an increased size similar to20 nm in the same phase. The purity and composition of the particles were determined using energy dispersive analysis of X-rays (EDAX) and X-ray photoelectron spectroscopy (XPS), respectively.