Nanometer metal oxide and preparation method thereof

A nano-metal and oxide technology, applied in the field of dye manufacturing process and nano-inorganic compound photocatalytic material, can solve the problems of unstable production process, influence implementation and promotion, increase production cost, etc. Improve synthesis efficiency and accelerate the effect of synthesis

Inactive Publication Date: 2015-08-19
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also some problems in the chemical sol-gel method: (1) The chemical sol-gel process takes a long time, usually several days or weeks; (2) The chemical synthesis method is used to gel the raw materials. In this process, the temperature has a great influe

Method used

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  • Nanometer metal oxide and preparation method thereof
  • Nanometer metal oxide and preparation method thereof
  • Nanometer metal oxide and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0035] Example 1

[0036] Under normal temperature and pressure, according to the composition ratio specified in Table 1, 4% aluminum nitrate (Al(NO 3 ) 3 ), 2% complexing agent citric acid, 10% sucrose, 5% glucose, 1% acrylamide, 0.2% bisacrylamide dissolved in water, stirred to form a uniform solution. In this embodiment, the inorganic salt aluminum nitrate is selected as the aluminum ion donor, and citric acid is selected as the complexing agent. Pour the stirred solution into the container and put 60 Co-γ irradiation field irradiates 5 kGy~25 kGy to synthesize initial hydrogel. Put the synthesized hydrogel in a drying box and dry it at 120°C for 24 hours to become a dry gel. Use a ball mill to grind the dry gel into a powder. After that, put the powdered gel in a sintering furnace and sinter at a temperature of 1200℃ for 3~5 hours to obtain nano Al 2 O 3 Particles.

Example Embodiment

[0037] Example 2

[0038] The gel synthesis steps, drying, grinding, and sintering methods in this embodiment are the same as those in Example 1, but the raw material components, component weight percentages, radiation source for gel synthesis, radiation dose, and sintering temperature are different. In this embodiment, the metal ion-containing halide or salt is Y(NO 3 ) 3 ·6H 2 O and Mn(CH 3 COO) 2 ·4H 2 O, respectively as yttrium and manganese ion donors, Y(NO 3 ) 3 ·6H 2 O and Mn(CH 3 COO) 2 ·4H 2 The weight ratio of O is 0.78:1; tartaric acid is selected as the complexing agent; the acid is nitric acid; 60 Co-γ ray irradiates 5 kGy~60 kGy, the sintering furnace temperature is 800℃, sinters 3~5 hours, and finally synthesizes nano-YMn 2 O 5 Particles.

[0039] figure 1 The photo of this example is the nano Ymn synthesized in this example 2 O 5 Electron micrograph of the particles.

Example Embodiment

[0040] Example 3

[0041] The gel synthesis steps, drying, grinding, and sintering methods in this embodiment are the same as those in Example 1, but the raw material components, component weight percentages, radiation source for gel synthesis, radiation dose, and sintering temperature are different. In this embodiment, the metal ion-containing halide or salt is cobalt chloride (CoCl 2 ) And aluminum nitrite (Al(NO 2 ) 3 ), providing cobalt and aluminum ions respectively, the weight ratio of cobalt chloride and aluminum nitrite is 0.40:1; 60 Co-γ-ray irradiation is 5 kGy~35 kGy, the sintering furnace temperature range is 300℃~600℃, sintering is 3~5 hours, and finally nano CoAl is synthesized 2 O 4 Particles, the nanoparticles can be used as excellent dyes.

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Abstract

The invention provides a nanometer metal oxide and a preparation method thereof, and belongs to the fields of preparation technologies of nanometer inorganic compound photocatalysis materials and dyes. A halide or inorganic salt containing metal ions is selected as a metal ion source, a complexing agent, sucrose, glucose, acrylamide, bisacrylamide, agar, gelatin and carboxymethyl cellulose are selected as gel raw materials, the metal ions are uniformly dispersed, an industrial irradiation device is used to irradiate a raw material solution or emulsion in order to form a gel with a spatial network structure, the nanometer metal oxide is prepared through later grinding and sintering technologies, and the nanometer metal oxide can be used as an excellent photocatalyst or dye. The preparation method has the advantages of simplicity, stable process, strong operability, great reduction of the use amount of the gel raw materials, no need of heating, no need of special treatment of the raw materials, and realization of large batch production by using the industrial irradiation device.

Description

technical field [0001] The invention relates to a nanometer metal oxide and a preparation method thereof, and belongs to the technical field of nanometer inorganic compound photocatalytic materials and dyestuff manufacturing techniques. Background technique [0002] Nanomaterials have unique quantum size effects, small size effects, surface effects and macroscopic quantum tunneling effects, and usually exhibit outstanding activity in catalytic reactions and dye printing and dyeing. In recent years, due to the excellent performance of metal oxide nano-photocatalysts and dyes, the application in environmental treatment and printing and dyeing has attracted more and more attention. The traditional methods for preparing nano-photocatalysts and dyes mainly include chemical sol-gel method, hydrolysis precipitation method, solid-phase method, hydrothermal synthesis method, microemulsion method, etc. Among them, the preparation process of chemical sol-gel method is relatively simple...

Claims

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Application Information

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IPC IPC(8): C01B13/14
Inventor 杨桂霞王仕发庞元龙安友曾凡松李闯刘许强曾光李晓燕
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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