Preparation and application of superfine sodium zirconium phosphate and its loaded antibacterial agent

By grinding and uniformly mixing zirconium ions and phosphate ions, and combining this with electrolysis to prepare ultrafine cubic sodium zirconium phosphate, and loading it with silver, zinc or copper ions, the problem of large particle size of sodium zirconium phosphate in the prior art is solved, and the preparation of highly efficient antibacterial agents and environmentally friendly production are realized.

CN118183672BActive Publication Date: 2025-11-04QUANZHOU NORMAL UNIV
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Patent Information

Application Number
CN202410297354.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-03-15
Publication Date
2025-11-04
Estimated Expiration
2044-03-15

AI Technical Summary

Technical Problem

Existing technologies make it difficult to prepare nanoscale sodium zirconium phosphate and its supported antibacterial agents, resulting in large particle sizes that affect antibacterial efficacy.

Method used

Ultrafine cubic sodium zirconium phosphate was prepared by grinding a composite powder of zirconium ions and phosphate ions into a uniform powder and then performing ion exchange in an acidic environment using electrolysis. The powder was then loaded with silver, zinc or copper ions to form an antibacterial agent.

Benefits of technology

Sodium zirconium phosphate powder with a particle size of less than 500 nm was prepared, which improved the antibacterial effect, reduced the emission of acid radical ions in wastewater, shortened the production cycle, and enhanced the activity of zirconium components.

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Abstract

The application relates to the technical field of antibacterial agents, and provides a preparation and application of superfine cubic sodium zirconium phosphate and a loaded antibacterial agent, which solve the defect of large particle size of zirconium phosphate obtained by an existing preparation method and comprises the following preparation steps: (1) a zirconium-containing compound and a phosphate-containing compound are weighed, a crystal form inducer is added, and then a mixed and uniform composite powder is formed by grinding for more than 30 min; (2) a sodium nitrate and ammonium oxalate-containing aqueous solution is prepared; (3) the prepared composite powder in the first step is weighed according to a proportion, the composite powder is slowly added into the aqueous solution prepared in the step (2) under continuous stirring, and after all the composite powder is added, continuous stirring is carried out and the solution is kept boiling for 2-3 hours; (4) after the reaction is completed, the solution is cooled to room temperature, the pH value is adjusted to weak acidity, and a cationic organic flocculating agent is added, so that cubic sodium zirconium phosphate precipitates are obtained; after dehydration, cleaning and drying, cubic sodium zirconium phosphate powder is obtained.
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