The synthesis of a novel conjugated microporous polymer and application on photocatalytic removal of uranium(Ⅵ) from wastewater under visible light

•A novel porphyrin-based CMP(TT-TPP) showed wide visible light adsorption.•The U(Ⅵ) removal capacity of TT-TPP was 3571.2 mg g−1.•80% uranium removal was achieved under solar irradiation.•Good removal rates were reached on high acidity and high salt condition.•TT-TPP displayed a fine selectivity for U(Ⅵ) from simulated radioactive wastewater.