Preparation method of titanium pillared illite-montmorillonite clay photocatalyst

The invention discloses a preparation method of a titanium pillared illite-montmorillonite clay photocatalyst, and belongs to the technical field of photocatalysts. The preparation method comprises the following steps: S1, preparing a titanium pillared agent: mixing tetrabutyl titanate, absolute ethyl alcohol and glacial acetic acid to be uniform to prepare a solution A, uniformly mixing nitric acid and absolute ethyl alcohol to prepare a solution B, dropwise adding the solution B into the solution A, and then adding sodium hydroxide after the drop-by-drop addition is finished to obtain a titanium pillaring agent; S2, preparing an illite-montmorillonite clay suspension: adding illite-montmorillonite clay into deionized water to prepare the illite-montmorillonite clay suspension; and S3, preparing the titanium pillared illite-montmorillonite clay photocatalyst: dropwise adding the titanium pillaring agent into the illite-montmorillonite clay suspension, stirring, standing, precipitating, filtering, washing, an