Method for preparing catalytic material from copper slag and application

The invention discloses a method for preparing a catalytic material by using copper slag, which specifically comprises the following steps: placing the copper slag in a dilute acid solution, stirring and reacting at 70-80 DEG C, and carrying out solid-liquid separation; calcining the filter residue in a muffle furnace, cooling, and fully stirring the calcined product in the filtrate; and then adding a reducing agent into the filtrate with the pH value of 1.5-5 in a nitrogen atmosphere, stirring for reaction, standing in the nitrogen atmosphere, carrying out solid-liquid separation, washing the solid, and carrying out vacuum drying to obtain the catalytic material, the prepared catalyst material is used for degrading methylene blue, rhodamine B, methyl orange and hexavalent chromium, methylene blue, rhodamine B, methyl orange and hexavalent chromium can be efficiently removed through catalytic degradation, the purposes of treating waste with waste and fully utilizing resources are achieved, and social benefits