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Method for preparing spherical nanometer zirconium dioxide

A nano-zirconia, spherical technology, applied in zirconia, nanostructure manufacturing, nanotechnology and other directions, to achieve the effect of good crystal form, fast reaction speed and simple process operation

Inactive Publication Date: 2011-11-23
张永昶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the methods reported in the literature are difficult to prepare nano-zirconium dioxide with uniform morphology, so research in this area has attracted a lot of attention from scientific researchers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Accurately weigh 1g ZrOCl with a balance 2 , placed in a beaker, and deionized water was added to the beaker to form a 7mmol / L solution.

[0024] Add 10 ml of concentrated ammonia water dropwise to the resulting solution at a rate of 10 drops / min until a large amount of white flocculent gel is produced, and stir for 20 min to disperse the product evenly.

[0025] The resulting gel was left to stand in a constant temperature water bath at 40°C for 40 min.

[0026] Transfer the gel into an autoclave and heat it with water at 140°C for 30h.

[0027] Cool the hydrothermal kettle to room temperature, centrifuge the solution, wash with ethanol for 3 times, and wash with deionized water for 5 times.

[0028] The obtained product was dried at a constant temperature of 80° C. for 10 h to obtain the desired product.

[0029] The average particle size of the spherical nano zirconia obtained in this embodiment is about 25nm.

[0030] The above method can be used to prepare sphe...

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Abstract

The invention relates to the technical field of advanced nanometer materials, and in particular relates to a method for preparing spherical nanometer zirconium dioxide. The invention aims at adopting a system, in which zirconium oxychloride is taken as a raw material, ammonia water is taken as a precipitator and quadrol is taken as an assistant, to provide a constant-temperature hydrothermal preparation method for the spherical nanometer zirconium dioxide. The method provided by the invention has the advantages that the production method is simple, the cost is low and the response speed is high. The method provided by the invention is widely applied in various fields, such as ceramic pigments, engineering ceramics, jewel industry, piezoelectric elements, ion exchangers, solid electrolytes, and the like.

Description

[technical field] [0001] The invention relates to the technical field of advanced nanometer materials, in particular to a method for preparing spherical nanometer zirconia. [Background technique] [0002] Zirconium dioxide is a very important structural and functional material with excellent physical and chemical properties, such as high melting point (2700 ° C) and high boiling point, small thermal conductivity, large thermal expansion coefficient, high temperature resistance, wear resistance Good, excellent corrosion resistance, etc. Nano-scale zirconia materials have many important uses because of their unique properties, such as insulators at room temperature, electrical conductivity, sensitive properties, and toughness at high temperatures. It is widely used in many different fields, such as ceramic pigments, engineering ceramics, gem industry, piezoelectric elements, ion exchangers, and solid electrolytes. Zirconium dioxide is also the only metal oxide that has acidi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02B82B3/00
Inventor 张永昶
Owner 张永昶
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