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Method for preparing nickel nano particles in porous glass

A nickel nanoparticle and porous glass technology, which is applied in the field of nickel nanoparticle preparation, can solve problems such as limited injection depth, long glass period, and failure to meet practical requirements, and achieve good dispersion and uniform distribution.

Active Publication Date: 2012-07-04
OCEANS KING LIGHTING SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods also have some disadvantages. For example, the melting method needs to mix the metal salt with the glass frit and then melt it at a high temperature. Due to the high viscosity of the glass system, it is not easy for the metal particles to be uniformly dispersed in the glass matrix. It is an easy thing; the ion implantation method is to implant metal into the glass matrix in the form of ions, and then obtain metal nanoparticles by heat treatment. This method requires the use of expensive ion implantation equipment, and the implantation depth is limited, and the metal nanoparticles can only be distributed On the surface of the glass substrate; there is another method is to use the sol-gel method to mix the solution containing the metal salt with the glass sol while preparing the glass, and the glass containing the metal nanoparticles can be obtained through post-treatment, and the dispersion of the metal nanoparticles is also relatively Relatively uniform, but this method takes a long time to prepare glass, and the strength of the glass sample is low, which cannot meet the practical requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation concentration is 10mL of the nickel nitrate aqueous solution of 1mol / L, the porous high-silica glass (the weight percent of main component: SiO 2 98.0%, B 2 o 3 1.0%, Al 2 o 3 1.0%, the pore size is 100 nanometers, and the volume of the micropores accounts for 25% of the total volume of the glass) is put into the nickel nitrate aqueous solution and soaked for 0.5h; then the porous glass is put into the tube furnace, and the CO gas is passed, and starts to use 3 Raise the temperature to 300°C at a rate of °C / min, keep it warm for 5h and then cool to room temperature, that is, nickel nanoparticles are prepared in the porous glass.

Embodiment 2

[0022] The preparation concentration is 1×10 -1 The nickel nitrate aqueous solution 10mL of mol / L, the porous high silica glass (the weight percent of main component: SiO 2 94.0%, B 2 o 3 3.0%, Al 2 o 3 3.0%, the pore size is 4 nanometers, and the volume of the micropores accounts for 40% of the total volume of the glass) is put into the nickel nitrate aqueous solution and soaked for 1h; the porous glass is taken out and dried in an oven at 80°C for 2h; then the porous glass is placed in the tube type furnace, through H 2 gas, and start to heat up to 330°C at a rate of 2°C / min, keep warm for 2h and then cool to room temperature, that is, nickel nanoparticles are prepared in the porous glass.

Embodiment 3

[0024] The preparation concentration is 1×10 -2 The nickel sulfate aqueous solution 10mL of mol / L, the porous high silica glass (the weight percent of main component: SiO 2 95.0%, B 2 o 3 2.5%, Al 2 o 3 2.5%, the pore size is 50 nanometers, and the volume of micropores accounts for 30% of the total volume of the glass) is soaked in nickel sulfate aqueous solution for 1h; the porous glass is taken out and rinsed once with distilled water; then the porous glass is placed in a tube furnace , through N 2 and H 2 Mixed gas with a volume ratio of 95:5, and start to heat up to 550°C at a rate of 3°C / min, keep warm for 2h and then cool to room temperature, that is, nickel nanoparticles are prepared in porous glass.

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PUM

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Abstract

The invention provides a method for preparing nickel nano particles in porous glass, which comprises the following steps: 1) selecting porous glass; 2) dissolving a nickel compound in a solvent to obtain a solution of which the concentration is within a range of 1 to 1*10<-6> mol / L; 3) placing the porous glass in the solution obtained in step 2), soaking for more than 0.5 hour until the solution sufficiently penetrates into micro pores of the porous glass; and 4) heating the porous glass obtained in step 3) in a heating furnace, preserving the temperature for a certain time, and cooling to room temperature, thus obtaining evenly distributed nickel nano particles in the porous glass. The method for preparing nickel nano particles in porous glass can effectively limit the dimensions of the particles, and by using the settings of process parameters, the nickel nano particles have favorable dispersibility in the glass and are evenly distributed.

Description

technical field [0001] The invention relates to a method for preparing nickel nanoparticles, in particular to a method for preparing nickel nanoparticles with porous glass as a carrier. Background technique [0002] The composite material obtained by doping metal particles is a functional material that plays an important role in the fields of optics, electronics, antibacterial and catalysis. As early as the 4th century AD, Roman glassworkers knew how to dope glass with gold, silver and other metal particles to prepare glass products with rich and beautiful colors. Nowadays, with the development of nonlinear optics, especially since American scientists Jian and Lind studied the third-order nonlinear properties of glass doped with nanoparticles in 1983, people's research on glass doped with metal particles has begun to focus on its optical properties. aspect. When metal nanoparticles are incorporated into glass, the glass matrix isolates the particles from each other to form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C11/00C03C3/06
Inventor 周明杰马文波陆树新
Owner OCEANS KING LIGHTING SCI&TECH CO LTD