Preparation method and application method of water-soluble titanium dioxide catalyst

The invention discloses a preparation method and an application method of a water-soluble titanium dioxide catalyst, and belongs to the field of preparation and application of titanium dioxide, the preparation method comprises the following steps: dropwise adding TiCl4 into n-butyl alcohol while stirring, and continuously stirring the solution for 5 min after the dropwise addition is finished to obtain a transparent and clear bright yellow solution; transferring the bright yellow solution into a polytetrafluoroethylene lining, and keeping the temperature at 120-150 DEG C for 5-8 hours to obtain a white precipitate; transferring the white precipitate into a centrifuge tube, performing centrifuging at 1000rmp, and performing washing with absolute ethyl alcohol for three times to obtain a white solid; and performing drying the white solid at 50 DEG C for 12 hours to obtain the water-soluble titanium dioxide crystal. The preparation method is simple, and rhodamine B can be effectively degraded. 本发明公开了一种水溶性二氧化钛催化剂