Preparation and photocatalytic properties of DBD plasma F/N co-doping modified TiO₂

In this thesis, TiO2 was first prepared by one-step hydrothermal method, then HF was used as an F source, and TiO2 was treated by a DBD plasma reactor under an N2 atmosphere, and the F/N co-modification of TiO2 was realized. In the visible light catalytic degradation experiment of 60 mg/L methylene blue, the overall catalytic performance of the catalyst treated with DBD plasma for 80 min was the best, with a degradation rate of 91% in 10 min and 96% in 60 min. Result Indication: DBD plasma treatment did not affect the phase structure and morphology of TiO2, but formed surface defects and surface adsorption on its surface, and successfully doped two non-metallic elements, F and N, thereby enhancing the photocatalytic degradation activity.