Degradación de naranja de metilo en medio acuoso por fotocatalisis solar usando catalizadores binarios TiO2Arcilla

Abstract

Abstract: In the present work the degradation of the methyl orange dye (NM) was improved, starting from a 10 ppm solution in distilled water, the effect of absorption, photolysis and heterogeneous photocatalysis was evaluated, the tests were carried out in pyrex flasks with 100 ml of sample and exposed to sunlight and in its absence to evaluate the catalytic effect of 100% clay pellets and binary clay catalysts/TiO2 and clay/ZnO , at two concentrations 40%/60% and 20% /80% for each case, the load was constant at 20g/L in all tests. The results determined that the most efficient catalyst is the clay/ZnO 20/%/80%, which achieved a removal of 56% at 4 hours compared to its similar clay/TiO2, which had an efficiency of 54%. It was determined that the clay/TiO2 20%/80% catalysts have a 29% removal capacity by absorption, that the reuse of the catalysts after three cycles does not cause loss of photocatalytic activity, photolysis produces degradation of the dye in very low percentages this depending on the radiation index.