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Silicon dioxide composite microspheres of metal or metal oxide nanoparticles and preparation method thereof

A technology of metal nanoparticles and silicon dioxide, applied in the direction of silicon dioxide, silicon oxide, etc., can solve the problems of destroying the properties of bulk materials and uneven properties of bulk materials

Active Publication Date: 2015-06-10
JIANGSU SHIKEXINCAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nanomaterials are dispersed in the matrix material in the form of nanoparticles, and these nanomaterials are easy to agglomerate, which makes the properties of the bulk material inhomogeneous, and even destroys the inherent properties of the bulk material

Method used

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  • Silicon dioxide composite microspheres of metal or metal oxide nanoparticles and preparation method thereof
  • Silicon dioxide composite microspheres of metal or metal oxide nanoparticles and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: the silicon dioxide composite microsphere of metallic silver nanoparticle

[0045] 1) silver nitrate is dissolved in the aqueous solution of ethanol, and the mass concentration of ethanol is 50%, and the mass concentration of silver nitrate is 10%, obtains silver nitrate solution.

[0046] 2) The three-dimensional macroporous carbon template is immersed in the silver nitrate solution obtained in step 1), and dried to obtain a template deposited with silver nitrate. The mass ratio of silver nitrate deposited in the template was adjusted to 10% by repeatedly repeating this step. Then the template is isolated from air and heated to 450°C, the silver nitrate is decomposed into metallic silver and nitrogen dioxide, and the metallic silver is deposited in the template.

[0047] 3) Tetraethyl orthosilicate is dissolved in the mixed solution of ethanol, water, acid, the mass concentration of tetraethyl orthosilicate is 40%, the mass concentration of ethanol is 58...

Embodiment 2

[0053] Example 2: Silica Composite Microspheres of Iron Oxide Nanoparticles

[0054] 1) Ferric nitrate is dissolved in the aqueous solution of ethanol, and the mass concentration of ethanol is 50%, and the mass concentration of ferric nitrate is 10%, obtains ferric nitrate solution.

[0055] 2) Dip the three-dimensional macroporous carbon template into the ferric nitrate solution obtained in step 1), and dry to obtain a template deposited with ferric nitrate. By repeatedly repeating this step, the mass ratio of ferric nitrate deposited in the template was adjusted to 10%. Then the template is isolated from the air and heated to 450°C, the iron nitrate is decomposed into iron oxide and nitrogen dioxide, and the iron oxide is deposited in the template.

[0056] 3) Tetraethyl orthosilicate is dissolved in the mixed solution of ethanol, water, acid, the mass concentration of tetraethyl orthosilicate is 40%, the mass concentration of ethanol is 58%, the mass concentration of water...

Embodiment 3

[0061] Example 3: Silica Composite Microspheres of Metallic Copper Nanoparticles

[0062] 1) Copper nitrate is dissolved in the aqueous solution of ethanol, and the mass concentration of ethanol is 50%, and the mass concentration of copper nitrate is 10%, obtains copper nitrate solution.

[0063] 2) The three-dimensional macroporous carbon template is immersed in the copper nitrate solution obtained in step 1), and dried to obtain a template deposited with copper nitrate. By repeatedly repeating this step, the mass ratio of copper nitrate deposited in the template was adjusted to 10%. Then the template is isolated from air and heated to 450°C, the copper nitrate is decomposed into copper oxide and nitrogen dioxide, and the copper oxide is deposited in the template.

[0064] 3) Tetraethyl orthosilicate is dissolved in the mixed solution of ethanol, water, acid, the mass concentration of tetraethyl orthosilicate is 40%, the mass concentration of ethanol is 58%, the mass concent...

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Abstract

The invention relates to silicon dioxide composite microspheres of metal or metal oxide nanoparticles. The diameter of the silicon dioxide composite microspheres is 100-1000nm, and the metal or metal oxide is uniformly dispersed in the inside or surface of the silicon dioxide microspheres in the form of a plurality of nanoparticles. The preparation method comprises the following steps: depositing nitrate on a three-dimensional ordered macroporous carbon template, heating in the absence of air to decompose the nitrate into metal or metal oxide, carrying out silicon dioxide sol-gel, sintering, grinding and the like to obtain the silicon dioxide composite microspheres with uniformly distributed metal or metal oxide nanoparticles. The composite microspheres can be used for preparing a functional filler for special glass materials. The method solves the problem of uniform dispersion of the metal or metal oxide nanoparticles in the base material.

Description

technical field [0001] The invention relates to a filler used for preparing special glass and special ceramic materials. It specifically relates to a silicon dioxide composite microsphere of metal or metal oxide nanoparticles. Background technique [0002] Common glasses include silicate glass, borate glass, phosphate glass, chalcogenide glass and halide glass. The main component of silicate glass is silicon dioxide, and may also contain minor components such as alkali metals, alkaline earth metals or other oxides. According to the different contents of the secondary components, it is divided into quartz glass, high silica glass, soda lime glass, lead silicate glass, aluminosilicate glass, borosilicate glass and so on. Special properties can be imparted to silicate glass by doping it with metal ions. For example, lead silicate glass prepared by adding lead ions to silicate glass has high refractive index and high volume resistance, and can be used to manufacture light bul...

Claims

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Application Information

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IPC IPC(8): C01B33/18B22F9/30
Inventor 纪立军范为正王明华徐静涛张鹤军刘建中
Owner JIANGSU SHIKEXINCAI CO LTD
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