▎ 摘　　要

NOVELTY - Preparation of three-dimensional network composite magnetic material includes mixing glass fiber in deionized water, adding aminosilane coupling agent, mixing, filtering, washing, drying to obtain modified glass fiber, mixing graphene oxide and deionized water, adding modified glass fiber, mixing, filtering, washing, drying to obtain glass fiber and graphene oxide hybrid material powder, mixing chitosan in acetic acid, adding glass fiber and graphene oxide hybrid material powder, mixing to obtain binary composite solution of glass fiber and graphene oxide hybrid material/chitosan, dispersing bacterial cellulose in deionized water, performing ultrasonic dispersion to obtain bacterial cellulose water dispersion system, adding binary composite solution of glass fiber and graphene oxide hybrid material/chitosan, mixing to obtain ternary composites of bacterial cellulose/glass fiber and graphene oxide hybrid materials/chitosan, shaping ternary composite into plate in mold and freeze-drying. USE - The preparation of three-dimensional network composite magnetic material is used for sewage treatment. ADVANTAGE - The method improves mechanical strength and has high efficiency adsorption capacity and good stability. DETAILED DESCRIPTION - Preparation of three-dimensional network composite magnetic material comprises mixing glass fiber in deionized water, adding aminosilane coupling agent, mixing, filtering, washing, drying to obtain modified glass fiber, mixing graphene oxide and deionized water to obtain graphene oxide aqueous dispersion, adding modified glass fiber to graphene oxide aqueous dispersion, mixing, filtering, washing, drying to obtain glass fiber and graphene oxide hybrid material powder, mixing chitosan in acetic acid to obtain chitosan solution, adding glass fiber and graphene oxide hybrid material powder, mixing to obtain binary composite solution of glass fiber and graphene oxide hybrid material/chitosan, dispersing bacterial cellulose in deionized water, performing ultrasonic dispersion to obtain bacterial cellulose water dispersion system, adding binary composite solution of glass fiber and graphene oxide hybrid material/chitosan, mixing to obtain ternary composites of bacterial cellulose/glass fiber and graphene oxide hybrid materials/chitosan, shaping ternary composite into plate in mold, freeze-drying to obtain bacterial cellulose/glass fiber and graphene oxide hybrid material/chitosan ternary composite porous material, adding ternary composite porous material to mixed aqueous solution containing iron (II) salt and iron (III) ferric salt, adding alkali solution, mixing, filtering, washing and drying.