Photocatalysis (PC) is a plausible approach for U extraction from aqueous media . The core processes of the PC U extraction method are the adsorption and reduction of soluble hexavalent U (U(VI), which is the dominant U species under ambient conditions, into insoluble tetravalent uranium (U(IV)) by conduction band electrons generated within the photocatalyst upon illumination. Currently, most research efforts have focused on developing novel photocatalysts , but two intrinsic obstacles persist (Figure ): the fast recombination of charge carriers upon their formation , and the blockage of catalyst active sites by precipitated U . Consequently, the efficiency of the PC method is limited, and catalyst regeneration is required, which hinders the long-term continuous operation. Therefore, suppressing the recombination of charge carriers, and spatially separating the uranium deposition sites from photocatalyst active sites are the keys to tackle these challenges.