Evaluation of supported Au-TiO₂ catalyst over different substrates for methyl red dye removal

摘要

In this paper several methods for titanium dioxide (TiO2) synthesis are presented, the methods used were microwave assisted sol-gel, anodizing and plasma deposition, and these structures were also doped with Au. The obtained morphologies were characterized by Raman spectroscopy, scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and elemental analysis EDS, also its catalytic effectiveness was measured by the degradation of the methyl red dye in water by photocatalysis and photo-electrocatalysis test. As well as the mineralization ratio was recorded by the total organic carbon removal. The kinetic study was carried out in order to determine the behavior of the reaction in each color degradation.