RELAÇÃO ENTRE ABSORÇÃO ÓPTICA E FOTOCATALÍTICA DE FILMES DOS ÓXIDOS DE TITÂNIO E TUNGSTÊNIO

Abstract

The perception of color in inorganic glass occurs through the introduction of ions from transition elements or rare earths. It occurs while the glass is still in the molten state. In optical absorption, light radiation is absorbed by transitions from the valence band to the conduction band, where a part is re-emitted at specific wavelengths caused by the levels increased by impurities. In this context, we synthesized films containing titanium and tungsten oxides by spin-coating. We characterized these samples by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission (TEM), heterogeneous photocatalysis and