| abstract |
The invention relates to a CoFe 2 O 4 -based nano-magnetic composite powder and a preparation method thereof, belonging to the technical field of material preparation, comprising the following steps: dissolving CoCl 2 ·6H 2 O and FeCl 3 ·6H 2 O in a In hydrochloric acid, mixing and stirring, adding KOH solution, transferring the mixture to an autoclave, filtering, washing and drying to obtain CoFe 2 O 4 nanoparticles; reducing CoFe 2 O 4 nanoparticles to obtain CoFe 2 nanoparticles; The 2 O 4 nanoparticles, the CoFe 2 nanoparticles and the Ni powder are ball-milled in an argon atmosphere, and annealed in an argon protective atmosphere to obtain a CoFe 2 O 4 -based nano-magnetic composite powder. In the technical scheme of the present invention, Ni powder and CoFe 2 nanoparticles are added to cobalt ferrite nanoparticles, and then the hard phase and the soft phase are dispersed by ball milling, and exchange coupling is induced by annealing, so that the composite material has good photocatalysis Effect. |