| Magnetic Fe3O4 nanoparticles have been widely used in related agronomy fields due to their small size, large specific surface area, surface effect and super paramagnetism. This paper summarizes the recent application status of magnetic Fe3O4 nanoparticles in related agronomy fields such as magnetic solid phase extraction, food industry, control of pesticides release, pesticide synergy and photocatalytic degradation, compares the advantages and disadvantages of different preparation methods of magnetic Fe3O4 nanoparticles, and discusses the challenges and future development trends of magnetic Fe3O4 nanoparticles in application. |