Preparation method of nano-zinc sulfide composite material

The preparation of nano-zinc sulfide composite materials by hydrothermal method solves the problem of difficult morphology and structure control, realizes high-sensitivity detection of nicotine and cotinine by electrochemical detection, simplifies the detection process and reduces costs.

CN117735596BActive Publication Date: 2026-05-26山西昆明烟草有限责任公司
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Patent Information

Application Number
CN202311687513.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-11
Publication Date
2026-05-26
Estimated Expiration
2043-12-11

AI Technical Summary

Technical Problem

Existing technologies make it difficult to synthesize nano-zinc sulfide composite materials with controllable morphology and structure through simple methods, and methods for electrochemical detection of nicotine and cotinine rely on high-cost instruments and equipment.

Method used

A hydrothermal method was used to synthesize nano-zinc sulfide composite materials. By controlling the ratio of ammonium molybdate to zinc acetate and thiourea and the heat treatment temperature, two-dimensional zinc sulfide sheet materials modified with molybdenum dioxide nanoparticles were prepared, achieving effective composite of zero-dimensional and two-dimensional materials.

Benefits of technology

The prepared nano-zinc sulfide composite material, used as an electrode material, can detect nicotine and cotinine at different concentrations with high sensitivity, simplifying the detection process and reducing costs.

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Abstract

This invention discloses a method for preparing a nano-zinc sulfide composite material, comprising: (1) dissolving ammonium molybdate in deionized water, stirring evenly to form a 50 g / L solution, then sequentially adding zinc acetate and thiourea, wherein the mass ratio of ammonium molybdate to zinc acetate and thiourea is 2:1, and stirring thoroughly to obtain a mixed solution; (2) transferring the obtained mixed solution to a reaction vessel, reacting at a constant temperature of 160℃ for 12 h, and obtaining a solid powder after treatment; (3) heat-treating at 300-400℃ for 2 h to obtain the nano-zinc sulfide composite material. This invention synthesizes zinc sulfide nanomaterials with different sizes and morphologies, while molybdenum dioxide nanoparticles modify the surface of zinc sulfide. The two work synergistically to have heterogeneous structural characteristics that promote and accelerate electron transport. Using them as electrode materials for electrochemical detection of nicotine and the metabolite cotinine content in cigarettes shows potential application advantages.
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