Synthesis of the high durability photocatalytic materials with tertiary components

Abstract

The high durability, re-collectable and low-cost materials with tertiary (reduced graphene-TiO₂-Fe₃O₄, denoted as GrTiFe) components for degradation of toxic organic compounds have been prepared from different precursors by coprecipitation and hydrothermal methods. By this procedure, TiO₂ and Fe₃O₄ nanoparticles have been growing on the reduced graphene oxide. The as-synthesized nanocomposites have been characterized with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope and magnetic hysteresis, and studied on the photo-degradation reaction of Moderacid Black (MDB). The result shows that the photocatalytic activity of as-synthesized composites is much higher than that of pure TiO₂ nanoparticles and the composites can be easily collected from water using a magnet for reusing. In addition, the GrTiFe is also able to degrade the organic compounds under modeling sunlight radiation.