Method for preparing cobalt nanoparticles in cellular glass

Abstract

The invention provides a method for preparing cobalt nanoparticles in cellular glass, which comprises the following steps of: 1) selecting the cellular glass; 2) dissolving a cobalt compound in solvent to prepare solution of which the concentration is between 1 to 1*10<6> mol / L; 3) immersing the cellular glass in solution prepared by the step 2) for over 0.5 hour for allowing the solution to infiltrate into micropores of the cellular glass fully; and 4) heating the cellular glass obtained by the step 3) in a heating furnace, performing heat preservation for a period of time, and cooling to the room temperature, so that the uniformly distributed cobalt nanoparticles can be prepared in the cellular glass. By the method for preparing the cobalt nanoparticles in the cellular glass, the sizes of the nanoparticles can be limited effectively, the setting of process parameters makes the cobalt nanoparticles well dispersed and uniformly distributed in the glass.

Description

technical field [0001] The invention relates to a method for preparing cobalt nanoparticles, in particular to a method for preparing cobalt 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...

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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