Non-metal carbonaceous catalyst for selectively degrading phenolic pollutants in water body as well as preparation method and application of non-metal carbonaceous catalyst

The invention discloses a non-metal carbonaceous catalyst for selectively degrading phenolic pollutants in a water body as well as a preparation method and application of the non-metal carbonaceous catalyst, and belongs to the technical field of advanced oxidation of water bodies. According to the invention, sodium citrate is taken as a carbon source precursor, B2O3 is taken as a doped boron source, and the non-metal carbonaceous catalyst capable of efficiently and selectively degrading phenol organic pollutants is synthesized. The nonmetal carbonaceous catalyst transfers electrons in the phenol organic pollutants as electron donors to the peroxydisulfate metastable surface compound as an electron acceptor through the catalyst as an electron shuttle, and the phenol pollutants are degraded. The nonmetal carbonaceous catalyst provided by the invention has the advantages of low precursor cost, simple preparation, good PDS activation capability, small influence of a water matrix, high mineralization degree, high