Porous carbon/nano bimetal oxide composite photocatalytic material with adsorbing and catalyzing functions and preparation method thereof

The invention relates to a porous carbon/nano bimetal oxide composite photocatalytic material with adsorbing and catalyzing functions and a preparation method thereof. Cu2+/Fe2+@SA Hydrogel is made byusing sodium alginate as a framework and Cu2+/Fe2+ mixed solution as a crosslinker; corresponding hydrogen oxides are formed in the hydrogel through precipitating; the porous carbon/nano bimetal oxide composite photocatalytic material is prepared by means of high-temperature calcining. Nano Cu2O particles are dispersed with a sodium alginate hydrogel template; nano Cu2O is synthesized in an oxygen-free environment built with N2 atmosphere; Cu2O is dispersed evenly in pores of a porous carbon material and may function to degrade dye wastewater by visible light catalysis. In addition, nano Fe3O4 is synthesized in a high-temperature oxygen-free environment so that the material herein has ferromagnetism and gains improved circle performance. The material herein has the adsorbing and catalyzing functions, can well rem