A kind of preparation method of metal oxide nanoparticle and metal nanoparticle

A metal nanoparticle and nanoparticle technology, which is applied in the preparation of oxides/hydroxides, ferrous oxides, nanotechnology, etc., to solve the problems of agglomeration and sintering, the preparation method is simple, and the crystallinity is good.

Active Publication Date: 2021-04-06
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In summary, it is difficult to avoid agglomeration and sintering during high-temperature calcination and decomposition during the preparation of metal oxides and metal nanoparticles, and the existing technology is difficult to solve this problem

Method used

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  • A kind of preparation method of metal oxide nanoparticle and metal nanoparticle
  • A kind of preparation method of metal oxide nanoparticle and metal nanoparticle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Prepare a solution with a concentration of 0.1 mol / L with iron acetylacetonate and ethanol, impregnate potassium sulfate powder, remove excess impregnating liquid, and dry the powder. The dried powder is calcined at 200°C to below 500°C, washed with water and dried to obtain γ ferric oxide nanoparticles; if calcined at 500°C to 1000°C for 2 hours, washed with water and dried to obtain α ferric oxide nanoparticles Particles; if reduced between 400°C and 500°C, ferric oxide nanoparticles can be obtained after washing and drying.

Embodiment 2

[0037] Example 2: Prepare a solution with a concentration of 0.1 mol / L with iron acetylacetonate and chloroform, impregnate potassium sulfate powder, remove excess impregnating liquid, and dry the powder. The dried powder is calcined at 200°C to below 500°C, washed with water and dried to obtain γ ferric oxide nanoparticles; if calcined at 500°C to 1000°C for 2 hours, washed with water and dried to obtain α ferric oxide nanoparticles Particles; if reduced between 400°C and 500°C, ferric oxide nanoparticles can be obtained after washing and drying.

Embodiment 3

[0038] Example 3: A solution with a concentration of 0.1 mol / L was prepared with iron acetylacetonate and acetone, impregnated with potassium sulfate powder, and after removing excess impregnating liquid, the powder was dried. The dried powder is calcined at 200°C to below 500°C, washed with water and dried to obtain γ ferric oxide nanoparticles; if calcined at 500°C to 1000°C for 2 hours, washed with water and dried to obtain α ferric oxide nanoparticles Particles; if reduced between 400°C and 500°C, ferric oxide nanoparticles can be obtained after washing and drying.

[0039]Example 3: Prepare a solution with a concentration of 0.01 mol / L with iron acetylacetonate and chloroform, impregnate potassium sulfate powder, remove excess impregnating liquid, and dry the powder. The dried powder is calcined at 200°C to below 500°C, washed with water and dried to obtain γ ferric oxide nanoparticles; if calcined at 500°C to 1000°C for 2 hours, washed with water and dried to obtain α fe...

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Abstract

The invention discloses a metal oxide nanoparticle and a preparation method of the metal nanoparticle. The metal acetylacetonate is dissolved in an organic solvent as an impregnating liquid, impregnated with a water-soluble inorganic salt, dried, calcined or reduced at high temperature, and washed with water to obtain dispersed Metal oxide nanoparticles or metal nanoparticles. The calcined product is calcined for the second time in a reducing atmosphere, and the dispersed nano metal powder can be obtained after washing with water. The invention can rapidly prepare metal oxide nanoparticles or metal nanoparticles with good dispersion and perfect crystallization in batches.

Description

technical field [0001] The invention relates to a preparation technology of metal oxide nanoparticles and metal nanoparticles, and belongs to the field of nano powder preparation. Background technique [0002] Metal oxides and metal nanoparticles have quantum size effect, surface effect, volume effect and macroscopic quantum tunneling effect, so they have unique thermal, optical, electrical, magnetic and chemical properties, and have been widely used in electronics, chemical industry, biology, medicine and other fields. Widely used, the innovation of the preparation technology of metal oxides and metal nanoparticles has always been the focus of research and production. [0003] Nanoparticles have a strong tendency to agglomerate, how to prevent the agglomeration and sintering of nanoparticles is the key and difficult point in the preparation technology of nanopowders. The existing nanoparticle preparation technology generally has the problems of low preparation temperature,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B13/18B82Y40/00C01G49/08B22F9/24
CPCB22F9/24B82Y40/00C01B13/18C01G49/08C01P2004/30C01P2004/64
Inventor 董岩唐振明杨凯成邵起越蒋建清
Owner SOUTHEAST UNIV
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