Síntese e caracterização de óxidos de tungstênio: estudo das características químicas e físicas do WOx

Abstract

The present study aims to propose a methodology that was able to reuse residues of tungsten electrodes from TIG (Tungsten Inert Gas) welding process, for the production of materials that could be used in photocatalytic processes. The proposed work managed, through this methodology, produce different types of tungsten oxides (WOx), in which differences in crystal sizes and morphologies can be observed depending on the conditions in which they were synthesized. These characteristics were essential for the results of the applications of these materials in a process of degradation of the reactive black 5 dye, since these results varied a lot due to the size and morphology that the WO3 crystals presented.