چكيده فارسي :
Recently, the degradation of organic pollutant in waste water has drawn much attention. Photodegradation is one of the most ideal methods to solve this problem due to its inexpensive, highly efficient, and environmental friendly [1]. TiO2 is widely used as photocatalyst in degrading pollutant water because of its nontoxic, insoluble, and inexpensive. Metalloporphyrin derivatives are prominent photosensitizers because their high activity of harvesting visible light. The TiO2 is successfully sensitized by metalloporphyrin for its visible light photosensitivity and semi-conductivity, which leads to its widely use as photocatalyst [2]. The LED sources have several advantages, such as high electricity to-light yield with minimal heating, their low energy consumption, long lifetime, and small size. An efficient magnetic TiO2-CuTHPP composite photocatalyst have been obtained by impregnating the CuTHPP onto the surface of TiO2 at room temperature. The results of SEM, EDS, XRD and FT-IR spectra proved that CuTHPP has combined with TiO2 successfully and did not change the crystal structure of the TiO2. Photocatalytic activity of the photocatalyst was evaluated under blue-LED irradiation by the use of rhodamine B dye as a model compound.
