1results about How to "Moderate appearance" patented technology

The invention belongs to the field of material chemistry, and discloses a nitrogen-doped zinc-based adsorbent, a preparation method of the nitrogen-doped zinc-based adsorbent and application of the nitrogen-doped zinc-based adsorbent in radioactive cesium removal, and the preparation method of the nitrogen-doped zinc-based adsorbent comprises the following steps: step 1, preparing a ZIF-8 precursor with a dodecahedron structure; step 2, preparation of HNZOR or HNZSS: dispersing the ZIF-8 precursor obtained in the step 1 in a solvent, carrying out a low-temperature hydrothermal reaction at 150-200 DEG C, collecting a product after the reaction is completed, washing and carrying out vacuum drying to obtain HNZOR; the preparation method comprises the following steps: dispersing HNZOR in water, carrying out secondary low-temperature hydrothermal reaction in an ammonium hydroxide environment at 120-180 DEG C, collecting a product after the reaction is completed, washing and carrying out vacuum drying to obtain HNZSS; and 3, activating the HNZOR or HNZOR obtained in the step 2 by using potassium salt containing K < + >, and after activation is completed, washing and drying to obtain the nitrogen-doped zinc-based adsorbent. The adsorbent disclosed by the invention can be widely applied to removal and enrichment of Cs < + > in nuclear power plant wastewater, accident emergency water bodies and high-salt complex waste liquid.