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Prepn process of nano silver iodate powder

A silver iodate, nanotechnology, applied in the directions of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve problems such as unseen preparation methods and process reports, and achieve easy industrial-scale production, simple and easy-to-control process, and product quality. stable effect

Inactive Publication Date: 2006-10-18
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
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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, which contains: silver nitrate 0.1M, citric acid (complexing agent) 0.034M;

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

[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 with a particle size of 30-60 nm. ...

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, which contains: silver nitrate 0.4M, citric acid (complexing agent) 0.136M;

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

[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, which contains: silver nitrate 0.25M, citric acid (complexing agent) 0.084M;

[0042] Potassium iodate clarified aqueous solution, which contains: potassium iodate 0.25M, citric acid (complexing agent) 0.084M, sodium dodecylsulfonate (dispersant) 0.025M;

[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 50-70 nm.

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Abstract

The invention relates to a preparation method for obtaining nano-scale silver iodate powder. It is to slowly add the clear aqueous solution of silver nitrate containing 0.1-0.4M of silver nitrate and 0.034-0.2M of complexing agent to the solution containing 0.1-0.4M of potassium iodate and 0.034-0.2M of complexing agent at normal temperature and pressure. , dispersant 0.01-0.04M potassium iodate clarified aqueous solution and fully stirred at the same time, after standing and settling, a nano-silver iodate precipitate was obtained; the nano-silver iodate precipitate was filtered, washed, and dried at a temperature of 80-100°C After 1-2.5 hours, nano-silver iodate powder with a particle size of 100 nm or less is obtained. The process of the invention is simple and easy to control, has no pollution, stable product quality, high purity, low cost and is easy to produce on an industrialized scale.

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