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Prepn process of nano silver iodate powder

A silver iodate and nanotechnology, which is applied in the direction of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of unseen preparation methods and process reports, and achieve easy industrial scale production, simple and easy-to-control process, and high purity Effect

Inactive Publication Date: 2005-09-28
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the production of nanometer silver iodate powder, all do not see relevant preparation method and process report both at home and abroad

Method used

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  • Prepn process of nano silver iodate powder
  • Prepn process of nano silver iodate powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Nano silver iodate powder is prepared according to the following process steps.

[0018] a. Prepare the following two solutions respectively:

[0019] Silver nitrate clarified aqueous solution, containing in this solution: silver nitrate 0.1M / L, citric acid (complexing agent) 0.034M / L;

[0020] Potassium iodate clarified aqueous solution contains: potassium iodate 0.1M / L, citric acid (complexing agent) 0.034M / L, sodium dodecylsulfonate (dispersant) 0.01M / L in the solution;

[0021] B. at normal temperature, normal pressure, the silver nitrate clarified aqueous solution of above-mentioned preparation is slowly added dropwise in the potassium iodate clarified aqueous solution and fully stirs simultaneously, obtains nanometer silver iodate precipitation after standing and settling;

[0022] c. The above nano-silver iodate precipitate is filtered, washed with water three times, and dried at a temperature of 80-100° C. for 1-2.5 hours to obtain nano-silver iodate powder wit...

Embodiment 2

[0032] Nano silver iodate powder is prepared according to the following process steps.

[0033] a. Prepare the following two solutions respectively:

[0034] Silver nitrate clarified aqueous solution, containing in this solution: silver nitrate 0.4M / L, citric acid (complexing agent) 0.136M / L;

[0035] The clarified aqueous solution of potassium iodate contains: potassium iodate 0.4M / L, citric acid (complexing agent) 0.136M / L, sodium dodecylsulfonate (dispersant) 0.04M / L;

[0036] b. Slowly add the silver nitrate clarified aqueous solution prepared above into the potassium iodate clarified aqueous solution at normal temperature and normal pressure and stir fully at the same time, obtain nano-silver iodate precipitation after standing and settling;

[0037] c. The above nano-silver iodate precipitate is filtered, washed with water three times, and dried at a temperature of 80-100° C. for 1-2.5 hours to obtain nano-silver iodate powder with a particle size of 55-80 nm.

Embodiment 3

[0039] Nano silver iodate powder is prepared according to the following process steps.

[0040] a. Prepare the following two solutions respectively:

[0041] Silver nitrate clarified aqueous solution, containing in this solution: silver nitrate 0.25M / L, citric acid (complexing agent) 0.084M / L;

[0042] Potassium iodate clarified aqueous solution, containing in this solution: Potassium iodate 0.25M / L, citric acid (complexing agent) 0.084M / L, sodium dodecylsulfonate (dispersant) 0.025M / L;

[0043] b. Slowly add the silver nitrate clarified aqueous solution prepared above into the potassium iodate clarified aqueous solution at normal temperature and normal pressure and stir fully at the same time, obtain nano-silver iodate precipitation after standing and settling;

[0044] c. The above nano-silver iodate precipitate is filtered, washed with water three times, and dried at a temperature of 80-100° C. for 1-2.5 hours to obtain nano-silver iodate powder with a particle size of 50-...

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Abstract

The present invention relates to the preparation process of nano silver iodate powder. Clear silver sulfate water solution containing silver nitrate in 0.1-0.4 M / L and complexing agent in 0.034-0.2 M / L is dropped slowly into clear potassium iodate water solution containing potassium iodate in 0.1-0.4 M / L, complexing agent in 0.034-0.2 M / L and dispersant in 0.01-0.04 M / L at normal temperature and normal pressure via stirring, and the product is let stand to deposit to obtain nanometer silver iodate deposit. The nanometer silver iodate deposit is filtered, washed and dried at 80-100 deg.c for 1-2.5 hr to obtain nanometer silver iodate powder with granularity below 100 nm. The process is easy to control, pollution-free and suitable for industrial production, and the product has high quality and low cost.

Description

technical field [0001] The invention relates to a method for preparing nano-scale silver iodate powder, in particular to a preparation method for directly obtaining nano-scale silver iodate powder by using a chemical reaction method. Background technique [0002] Silver iodate is a strong oxidizing agent. Silver iodate, silver iodide, and copper iodide can form a complex together as a nucleating agent in weather modification. The composite catalyst for artificial rainfall is made by using the above-mentioned compound powder with nano-scale ultrafine particles, and the effect is more prominent. And the production of nanometer silver iodate powder, all do not see relevant preparation method and technology report at home and abroad. Contents of the invention [0003] The object of the present invention is to provide a kind of preparation method of the nanometer silver iodate powder body that process is simple, is easy to industrial scale production. [0004] The preparatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00C01B11/22C01G5/00
Inventor 刘先黎江中浩连建设李光玉
Owner JILIN UNIV
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