| abstract |
A preparation method of Janus type magnetic cyclodextrin-graphite phase carbon nitride and an experimental method for removing polychlorinated biphenyl in water by using the Janus type magnetic cyclodextrin-graphite phase carbon nitride. The invention belongs to the field of water treatment. The invention aims to solve the technical problems that polychlorinated biphenyl pollutants are difficult to treat, and the existing iron-based Fenton method is easy to agglomerate, poor in chemical stability, high in energy consumption of a photocatalytic method and low in degradation efficiency. According to the invention, a high-temperature hydrolysis method is combined with a sol-gel method to prepare Janus type magnetic mesoporous silica, the Janus type magnetic cyclodextrin-graphite phase carbon nitride is used as a precursor, and a derivatization grafting technology is utilized to prepare the Janus type magnetic cyclodextrin-graphite phase carbon nitride, and the Janus type magnetic mesoporous silica is a material with selective adsorption, heterogeneous Fenton oxidation and visible light catalysis functions, and is used for removing polychlorinated biphenyl in water. The material prepared by the invention has magnetism, is easy to separate from water, has low price and stable property, and can be recycled, and the removal rate of polychlorinated biphenyl in water by the Janus type magnetic cyclodextrin-graphite phase carbon nitride reaches 78-90%. |