چكيده به لاتين
The ZnO/Pumice nanocomposite was prepared by hydrothermal procedures. The amount of ZnO loading was varied in order to obtain ZnO concentrations of 5, 10, 15 and 20 wt% in the final material. They were characterized by a series of complementary techniques: XRF, XRD, FT-IR, FE-SEM, TEM, DRS and VSM. The prepared nanocomposite was used as a catalyst in the photodegradation process of Rhodamine B dye in aqueous solution. The effect of key operating parameters such as support effect, loading percentage, catalyst dosage, light source, photosynthesizer (porphyrin), initial concentration of the dye and initial pH of the solutions were studied on the photodegradation process of dye. The primary objective was to determine the optimal conditions for each parameter. The sample containing 15% zinc oxide showed the best catalytic performance and it can be reused without noticeable activity loss during at least four cycles.
