Foamy copper in-situ growth copper oxide/cuprous oxide photocatalytic material as well as preparation method and application thereof

The invention discloses a foamy copper in-situ growth copper oxide/cuprous oxide photocatalytic material as well as a preparation method and application thereof. The preparation method comprises the following steps of dissolving NaOH in deionized water to obtain a solution A, adding NaCl into the solution A to obtain a solution B, and adding a dispersing agent into the solution B to obtain a solution C, taking a foam copper sheet as an anode, taking an inert electrode as a cathode, taking the solution C as electrolyte, enabling the anode to be subjected to oxidation treatment, then using deionized water for repeatedly washing the foam copper sheet subjected to anodic oxidation, and acquiring a product D attached with a black active substance, and annealing the product D to obtain the foamy copper in-situ growth copper oxide/cuprous oxide photocatalytic material. The phase-controllable copper oxide/cuprous oxide photocatalytic film material is obtained, the microtopography of the material is regulated and cont