TiO2 soportada en partículas magnéticas para la degradación de tartrazina

CARLA L. HEREDIA; EDGARDO L. SHAM; MÓNICA FARFÁN-TORRES

Santa Fé

Congreso; Congreso Internacional de Metalurgia y Materiales SAM CONAMET 2014; 2014

SAM CONAMET IBEROMAT

Magnetic beads were obtained by dropping a solution of sodium alginate containing magnetite particles into a CaCl2 solution. TiO2 anatase particles were synthetized by a sol-gel method at low temperature (75 °C), and were supported on magnetic beads to obtain the magnetic photocatalyst, MC. Magnetite particles and magnetic photocatalyst were characterized by nitrogen adsorption (BET surface area) and TiO2 phase was analyzed by means of Raman spectroscopy. The photocatalytic activity of CM was evaluated on tartrazine degradation, highly used in food industry, at two different concentrations. Finally, CM stability was evaluated by reusability assays in several subsequent cycles. Results showed a good photocatalytic response for tartrazine degradation, easy recuperation and appropriate perform in the reusability of CM.