Method for synthesizing ferroferric oxide nanoparticles from carrot extract

The invention discloses a method for synthesizing ferroferric oxide nanoparticles by using a carrot extract. The preparation method comprises the following specific steps: adding deionized water and a carrot extract in a certain volume ratio into a three-neck flask at room temperature, adding an alkali source, carrying out ultrasonic dispersion and mixing for a period of time, and heating after uniformly mixing; weighing an iron source, preparing the iron source into a solution, and filling the solution into a trace feeder; raising the temperature to a certain temperature, adding an iron source and an alkali source, and reacting for a period of time until the reaction is complete; pouring out a product, carrying out magnetic separation, cleaning the product obtained by magnetic separation, carrying out suction filtration, preparing the product obtained by suction filtration into a turbid liquid by using deionized water, carrying out spray drying to prepare powder, and collecting powder to obtain the ferroferr