Method of preparing nonstoichiometry doping rare earth element nano SiO2 composite particles

Abstract

The invention discloses a preparing method for non-stoichiometric doped rare-earth element nano SiO2 compound particle belonging to SiO2 compound material. The method comprises following steps: having the organic silane and disposed rare-earth element inorganic salt before drying as monomer, respectively dissolving in the absolute ethyl alcohol and distilled water to produce respective precursor, uniformly mixing under the mechanical agitation, hydrolyzing under the ultrasonic environment having the ammonia as buffer in the alkaline condition, forming equal, stable, transparent sol, aging to obtain gel, gel dehydration by azeotropic distillation, then sintering in the retort furnace to get doped rare-earth element nano SiO2 compound particle without group lump. The invention has a simple process. The obtained doped rare-earth element nano SiO2 compound particle has a high mechanical strength, a strong hydrophilicity and a wide universality which is mainly used to produce filling material of the organic film, super strong sorbent, photoluminescence material.

Description

technical field

[0001] The invention relates to a non-stoichiometric doped rare earth element nano-SiO 2 Preparation method of composite particles. Belongs to Nano SiO 2 Preparation technology of composite materials. Background technique

[0002] The 21st century is an era of rapid development and wide application of new materials and advanced manufacturing technologies, and materials are one of the symbols of human evolution. As early as 1959, the famous physicist Richard Feynaman first proposed the idea of ​​molecularization of nanomaterials at the American Physics Annual Meeting. Based on this idea and with the improvement of the development of physics and the improvement of experimental observation technology, the preparation technology of nanomaterials It has gone deep into the manipulation of single atoms and the realization of molecular "surgery" through soft chemistry. However, how to realize the compounding and functionalization of materials when constructing mo...