A zif-8 carbon-loaded zirconium phosphate composite material and its application in fluorine ion adsorption

CN122098518APending Publication Date: 2026-05-29NANJING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF SCI & TECH
Filing Date
2026-04-02
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing zirconium phosphate materials are prone to agglomeration and are difficult to recycle in practical applications. The bonding force between porous carbon materials and zirconium phosphate is weak, resulting in unstable adsorption performance. Furthermore, they lack specific affinity for fluoride ions, and existing processes are complex and difficult to precisely control the pore structure.

Method used

Using nitrogen-doped porous carbon derived from ZIF-8 as a support, zirconium phosphate was loaded onto it through an in-situ synthesis strategy to form a ZIF-8 carbon-supported zirconium phosphate composite material. The ordered pore structure and nitrogen-doped active sites of ZIF-8 were utilized to enhance the dispersibility and binding force of zirconium phosphate. The preparation process is simple and does not require the introduction of an additional nitrogen source.

Benefits of technology

This study achieves efficient and selective adsorption of fluoride ions by zirconium phosphate, improving the structural stability and recyclability of the material. It has a high specific surface area and abundant active sites, making it suitable for the treatment of fluoride-containing wastewater.

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Abstract

The application provides a ZIF-8 carbon-loaded zirconium phosphate composite material and application thereof in fluorine ion adsorption, and relates to the technical field of adsorbing materials.Aiming at the problems of disordered carbon base structure, lack of surface active sites and weak combination of zirconium phosphate in the zirconium phosphate / porous carbon composite material in the prior art, the application provides a ZIF-8 carbon-loaded zirconium phosphate composite material, wherein the composite material comprises a ZIF-8 carbon carrier and zirconium phosphate loaded on the ZIF-8 carbon carrier; and the zirconium phosphate is uniformly distributed in the form of amorphous on the surface and in the pores of the ZIF-8 carbon carrier.The zirconium phosphate in the composite material prepared by the application exists in the form of amorphous, and the adsorption capacity of the composite material for fluorine ions is significantly improved compared with that of the zirconium phosphate in the form of crystal.
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