Research On The Synthesis And Application Of Strong Ultraviolet Shielding Fe-TiO₂

In this paper Fe-TiO₂ nanoparticles was synthesized by one-step microwave hydrothermal method with industrial-grade TiOSO₄ as raw material,urea as precipitant,Fe?NO₃?₃-9H₂O as the doping agent.And the Fe-TiO₂/PE film and sun cream were prepared with Fe-Ti0₂ as ultraviolet shield agent.Using a variety of methods like DRS,FM,etc.to characterize the Fe-TiO₂ and according to the results of the photo-degradation of RhB,we determined the best mixing ratio of Fe³⁺:The experiment result indicates 5mol%Fe-TiO₂ has a very low catalytic activity,at the same time,its capacity of absorbing ultraviolet light and the scope of ultraviolet absorption is obviously improved.Adding 5mol%Fe-TiO₂ to sun cream and other photosensitive material as the ultraviolet screening agent not only effectively shield the illumination of ultraviolet light,but also reduce the harm on the skin or the degradation of photosensitive material.In order to improve the dispersion of the Fe-TiO₂ in polymer,in this paper the silane coupling agent KH550 was used for the Fe-TiO₂ surface modifier.Studies have shown that KH550 could effectively improve the dispersibility of Fe-TiO₂ in the PE film.The ultraviolet shielding ability of the commercial sunscreens and sunscreen made by ourselves were compared by the physical test method.Research has shown that compared with the chemical sunscreen,physical sunscreen has more effective and stabilized.And the application of Fe-TiO₂ as sunscreen has a bright future.