| abstract |
The invention relates to the technical field of photocatalytic degradation and discloses N-doped TiO 2 Hollow microsphere-BiOBr photocatalytic degradation material, N-doped porous TiO 2 The hollow microspheres are used as a matrix, bismuth nitrate and sodium bromide are used as raw materials, and N-doped TiO is obtained 2 The hollow microsphere loaded flower-shaped nanometer BiOBr composite material has an ultra-high specific surface area, is beneficial to exposing more photocatalytic active sites and adsorbing more organic pollutants such as methyl orange and the like, and promotes nanometer porous TiO by doping N 2 More oxygen vacancies are formed on the surface of the hollow microsphere, photo-generated electrons are captured, photo-generated electron-hole recombination is delayed, and BiOBr and TiO are 2 A p-N type heterojunction is formed, the separation of photogenerated electrons and holes is further promoted, the band gap of the composite material is narrowed, the absorption band edge is red-shifted, the absorption efficiency of visible light is improved, and N-doped TiO is enabled 2 The hollow microsphere-BiOBr photocatalytic degradation material has excellent performance of photocatalytic degradation of organic pollutants such as methyl orange and the like. |