A silicon oxide-based highly crystalline nano-transition metal oxide porous functional composite material and its preparation method

Abstract

The present invention provides a method of preparing a silicon -based high -crystallized nano -transition metal oxide multi -porous function composite material, which includes the following steps: 1) preparing the transition metal nanoparticles; 2) The nanoparticles obtained by step 1)Organic solvent was cleaned, and the obtained precipitation was scattered in the solvent; 3) Step 2) scattered the solution obtained from polyethylene glycol; 4) to the solution obtained to the solution obtained with the three -inching section P123The solution and ethyl achicate, add an alkaline solution to the pH to 8-10 after stirring, continue to stir for 2-8h, clean the product and put it in the oven to dry, get the coil oxide high crystal nano-transition metal oxide porous poly pelpyhFunctional composite materials.The present invention can convert metals into metal oxides with high crystals under room temperature conditions. The method is simple and novel. It is transformed by cobalt nanocrystalline to directly synthesize the silicon oxide base with high holes and high ratio of high ratio.High crystal nano transition metal oxide polyitable functional composite material.

Description

technical field [0001] The invention relates to the field of nanomaterials and nanotechnology, in particular to a silicon oxide-based highly crystalline nano cobalt oxide porous functional composite material with high crystallinity and porous structure and a preparation method thereof. Background technique [0002] Transition metal oxides with a mesoporous structure have broad application prospects in the fields of catalysis, light, electricity, and magnetism due to the diversity of their components and the variability of their valence states. The optimization can only be achieved in the crystallized state, and as the most stable form in the solid, the crystalline state has high thermal and mechanical stability. There have been many reports on the synthesis of transition metal oxides with mesoporous structures. Among them, more reports focus on the method of using soft templates (such as surfactants) and hard templates (ie, mesoporous materials). However, due to the weak i...

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Problems solved by technology

However, due to the weak interaction between surfactants and inorganic substances and hydrolyzable inorganic salts (such as metal alkoxides), the prepared mesoporous oxides are mostly amorphous or semi-crystalline frameworks, and highly crystalline Mesoporous oxides remain a major challenge

However, highly crystalline and highly structured mesoporous metal oxides can be prepared by thermal conversion methods, but the high temperature environment required for heat treatment of materials easily leads to changes in the crystal structure of oxides and loss of mesoporous structures.

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