Preparation of Fe3O4/TiO2 and Its Photocatalytic Performance

Aimed at the problem solving of difficult reclaiming nanometer TiO₂, the paper conducts a study on magnetic recovering by a series of experiments. Firstly, taking methylene blue as the object, the test compares the photocatalytic performance between self-manufactured TiO₂ and commercial TiO₂ after 160 minutes photocatalytic degradation. The results show that their degradation rates are 94% and 99% respectively, which indicates the photocatalytic performance of self-manufactured TiO₂ is feasible. Secondly, the test prepares Fe₃O₄ magnetic nucleus adopting titration-hydrolysis method, use them to magnetize the photocatalytic material self-manufactured TiO₂, and then verifies the magnetism of self-manufactured TiO₂. The result manifests that self-manufactured TiO₂ possesses great magnetism and can be reclaimed effectively with magnetic separation technique. However, after undergoing 160 minutes photocatalytic degradation, its degradation rate is only 32.68%, which denotes that its photocatalytic degradation performance is low.