A NiO / FeO supported zinc sulfide composite material, its preparation method and application

By in-situ loading Ni0 and Fe0 nanoparticles onto the surface of ZnS two-dimensional nanosheets, a Ni0/Fe0-ZnS composite material was constructed, which solved the problems of easy agglomeration of zero-valent metals and insufficient reducing power, and achieved efficient removal of pollutants in water bodies where uranium and selenium coexist, with good stability and synergistic removal capabilities.

CN122352189APending Publication Date: 2026-07-10NANHUA UNIV
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Patent Information

Application Number
CN202610779881.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-02
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing zero-valent metal materials are prone to agglomeration and have low utilization of active sites. The reduction capacity of a single adsorbent material is insufficient, making it difficult to remove uranium and selenium pollutants simultaneously and efficiently.

Method used

By in-situ loading NiO and FeO nanoparticles onto the surface of ZnS two-dimensional nanosheets, a NiO/FeO-ZnS composite material was constructed. The dispersion and anchoring effect of ZnS, combined with the reducing activity of the NiO/FeO bimetallic system and the adsorption and fixation effect of sulfur sites on the ZnS surface, achieved efficient removal of pollutants.

Benefits of technology

It significantly improves the exposure and utilization of active sites, enhances the reduction and conversion capacity of U(VI)/Se(IV), and achieves effective removal of pollutants in uranium-selenium coexisting water bodies. Moreover, the preparation method is simple, the conditions are mild, and the performance is stable.

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Abstract

This invention discloses a Ni 0 / Fe 0 This invention relates to zinc sulfide-loaded composite materials, their preparation methods, and applications, belonging to the field of environmental functional nanomaterials. The preparation method includes: dissolving zinc and sulfur precursors in a solvent to obtain ZnS nanosheets via a hydrothermal method; dispersing ZnS, iron, and nickel precursors in deionized water to form a mixed dispersion under an inert atmosphere; and adding sodium borohydride solution dropwise to the mixed dispersion to allow Ni to... 2+ and Fe 2+ In-situ reduction was performed on the zinc sulfide surface; after the reaction was completed, Ni was obtained through solid-liquid separation, washing, and freeze-drying. 0 / Fe 0 -ZnS composite material. This material can reduce Ni 0 and Fe 0 The aggregation of particles increases the exposure of surface active sites, and through the sulfur sites on the ZnS surface, the reduction activity of zero-valent metals and the bimetallic electron transfer effect, it can achieve the adsorption, reduction and fixation of uranium and selenium pollutants, which is suitable for the treatment of selenium-containing water bodies and water bodies with uranium and selenium coexistence.
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