A method for preparing copper ion slow-release nano copper hydroxide

The preparation of copper ion sustained-release nano copper hydroxide through coordination precipitation method solves the problem of insufficient sustained-release copper ion in the prior art, achieves longer bactericidal durability and lower agricultural dosage, significantly improves the prevention and control effect and reduces environmental impact.

CN119750633APending Publication Date: 2025-04-04云南锡业集团(控股)有限责任公司 +1
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Patent Information

Application Number
CN202510019176.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-07
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

The existing technology is difficult to achieve sustained release of copper ions, resulting in insufficient sterilization durability, high agricultural usage, and lack of effective nano-copper pesticide sustained release technology.

Method used

Copper ion sustained-release nano-copper hydroxide was prepared by coordination precipitation method. By slowly adding ammonia water to the copper sulfate solution, a precursor of flocculent copper compound was formed, and then a strong alkali solution was added. After washing, centrifugation and drying, nano-copper hydroxide with sustained-release properties was obtained.

Benefits of technology

It achieves the sustained release of copper ions, extends the durability of sterilization, reduces agricultural usage, improves prevention and control effects, and reduces the impact on the environment.

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Abstract

The invention discloses a method for preparing a copper ion slow-release nano copper hydroxide, wherein an ammonia solution is slowly added dropwise to a copper sulfate solution to obtain a precursor solution of a flocculent copper compound; a surfactant is then dissolved in distilled water, added to the obtained precursor solution, and fully stirred and mixed; sodium hydroxide is then added dropwise to the obtained mixed solution, stirred and fully mixed, and then washed with distilled water for 3 to 5 times until the pH value is neutral; the washed solution is centrifuged to obtain a precipitate; and the precipitate is dried to obtain a copper ion slow-release nano copper hydroxide. The method of the invention is simple and effective, has a high yield, is low in cost, and can effectively reduce pollution and waste to the environment.
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