Síntese de um fotocalisador (tio2) imobilizado em poliestireno expandido residual

Abstract

The present work aimed to evaluate a new catalytic support used for heterogeneous photocatalysis. The support chosen was polystyrene, and the titanium dioxide catalyst was incorporated therein. The immobilization process was carried out by denaturing the polymeric material and then incorporating TiO2 into its structure. The new support was characterized by optical microscopy and X-ray diffractometry. According to the results obtained in the physical analysis of the support, the process of immobilization of the catalyst to the support was efficient, being evidenced in the microscopy and XRD analyses. To evaluate the photocatalytic capacity of the new support, two different dyes were used in heterogeneous photocatalysis reactions. The results obtained in the discoloration of the dyes corroborate the results presented in the literature, where for the methylene blue dye the discoloration was 95%, and for the Congo Red dye it was 97%.