▎ 摘　　要

NOVELTY - Preparing sewage treatment materials comprises (i) dissolving graphene oxide in a solvent and ultrasonically mixing, then adding certain amount of tetraethyl orthosilicate and potassium perborate, stirring evenly, and transferring into hydrothermal kettle to react for a certain time, (ii) soaking B-doped three-dimensional graphene/silica composite material in a strong alkali solution at 30-60 degrees C, taking it out and washing with deionized water to a pH of 7-7.5, (iii) freeze-drying the obtained three-dimensional porous graphene-based material and dispersing it in water-isopropanol, adding zinc nitrate and ferrous nitrate as raw materials, stirring into a uniform suspension, performing microwave-assisted solvent thermal reaction for a certain time, collecting precipitate by filtration, and washing with deionized water and absolute ethanol for 3 times, and vacuum drying to obtain B-doped three-dimensional graphene-based/nano flower-type zinc ferrite material. USE - The sewage treatment materials are useful in the field of ion adsorption and industrial sewage treatment (claimed). ADVANTAGE - The sewage treatment materials can absorb metal ions and organic dyes in water with high adsorption efficiency.