Catalytic degradation of rhodamine b dye using hydrogen peroxide over ceramic membrane supported by vanadium (v) oxide layer

Аннотация

In this paper, the catalytic degradation of Rhodamine B dye using a ceramic membrane based on α-Al2O3 with a V2O5 supported layer is described. The vanadium-supported layer was prepared using the solgel method. The sol V2O5.1.6H2O was obtained through the thermolysis of V2O5 with H2O2. The ceramic membrane with V2O5 supported layer was characterized using various methods including SEM, XRD, TG/DSC, and ASAP. After thermal treatment, no changes in the phase of V2O5 were observed on the surface of the membrane, where it appeared in the form of dendrite crystals. It was noted that the BET surface area of the supported layer decreased following thermal treatment. The degradation process of Rhodamine B dye was conducted in a batch reactor using the prepared ceramic membrane with supported layers of varying lengths. The degree of degradation of the Rhodamine B dye was assessed by measuring the optical density of the solution with a spectrophotometer.The degradation rate was analyzed using a first-order kinetic equation. It was found that increasing the length of the supported layer positively influenced the degradation rate.