Preparation method, product, and application of iron-cobalt fenton-like catalyst

A preparation method of an iron-cobalt fenton-like catalyst, comprising steps of:

• respectively preparing aqueous solutions of FeCl2.4H2O and CoCl2.6H2O, wherein a molar concentration ratio of Fe2+ to Co2+ is 1:1-10:1;
• the FeCl2.4H2O and the CoCl7.6H2O serve as reaction precursors;
• adding 2-10 ml of polyvinyl pyrrolidone (PVP) having a concentration of 5 g/L, so as to obtain a first mixed solution I, wherein the PVP serves as a surface protecting agent;
• weighing 100 ml of deionized water, adding NaOH into the deionized water for adjusting a pH value of the deinoized water to 11.0-12.0, and then adding 1-5 g of KBH4 to prepare a second mixed solution II, wherein the KBH4 serves as a reaction reducing agent;
• dropping the second mixed solution II into the first mixed solution I with a reaction temperature controlled at 50±5° C., a dropping speed controlled at 15-50 r/min by a peristaltic pump, and a stirring speed controlled at 400-900 r/min by a mechanical stirrer, and then generating a black precipitate;
• after finishing dropping the second mixed solution II of the KBH4 and the NaOH, stirring an obtained third mixed solution for 10-40 min, and aging for 0.5-2 h;
• and, after suction filtration, washing, and vacuum drying, obtaining the iron-cobalt fenton-like catalyst.