Synthesis method of copper-rare earth nano petal-shaped metal oxide

A synthesis method and petal-shaped technology, which is applied in the field of synthesis of copper-rare earth nano-petal-shaped metal oxides, can solve the problems of difficult control of the atomic ratio of metal oxides, high purity of product impurities, poor product uniformity, etc., and achieve saving Effects of energy consumption, narrow particle size distribution range, and low cost

Inactive Publication Date: 2016-08-17
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The object of the present invention is to provide a kind of synthetic method of copper-rare earth nano petal-shaped metal oxide, which can effectively solve the problems existing in the prior art, especially the product with more impurities (lower purity), larger particles, The uniformity of the product is poor, and the general sintering temperature is high, and the atomic ratio of the prepared metal oxide is not easy to control.

Method used

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  • Synthesis method of copper-rare earth nano petal-shaped metal oxide
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  • Synthesis method of copper-rare earth nano petal-shaped metal oxide

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Embodiment 1

[0049] Embodiment 1 of the present invention: the synthetic method of copper-rare earth nanometer petal-shaped metal oxide, comprises the following steps: according to the molar ratio of 1:2, take cupric chloride and neodymium chloride hexahydrate to be dissolved in deionized water, at 70 Stir with a magnetic stirrer at ℃ for 10 minutes; add 3,5 dipicolinic acid to dissolve in water, pour the dissolved copper chloride and neodymium chloride hexahydrate solution into the 3,5 dipicolinic acid solution, and continue stirring for 10~ After 90 minutes, the solution was left to stand for 30-120 minutes to prepare an acidic precursor; triethylamine was added to the acidic precursor solution to make the pH of the solution = 7, and the solution was left to stand; if the solution did not separate, add 3,5 dipicolinic acid, repeat the operation of pouring the dissolved copper chloride and neodymium chloride hexahydrate solution into the 3,5 dipicolinic acid solution from the beginning to ...

Embodiment 2

[0051] Embodiment 2: the synthesis method of copper-rare earth nanometer petal-like metal oxide, comprises the following steps: take cupric chloride and samarium chloride according to the ratio that molar ratio is 1:1, be dissolved in the deionized water of 10 times of mass, After dissolving, add it to 2,6-dipicolinic acid, stir at room temperature for 30 minutes, and then let the solution stand for 30 minutes to obtain an acidic precursor; add ammonia water to the acidic precursor to dissolve so that the pH of the solution is 7, and let stand; If no stratification occurs in the solution, add 2,6-dipicolinic acid again, and repeat the operation from the beginning of stirring for 30 minutes at room temperature to the end of standing until the solution appears stratified (the upper layer is a colorless liquid, and the lower layer is a solid small particles); after the solution is layered, the solution is vacuumed with a water pump to filter and wash, and the precipitated powder i...

Embodiment 3

[0052] Embodiment 3: the synthetic method of copper-rare earth nanometer petal-like metal oxide, comprises the following steps: take samarium acetate and copper acetate according to the molar ratio of 1:2, be dissolved in the deionized water of 10 times of mass, and in heating type Stir on a stirrer at 50°C for 30 minutes; add 3,4 dipicolinic acid to dissolve in water, add the dissolved samarium acetate and copper acetate solution into the 3,4 dipicolinic acid solution, keep stirring for 30 minutes, and then let the solution stand After 60 minutes, the acidic precursor was prepared; after dissolving NaOH in water, add it to the acidic precursor solution to adjust the pH value of the solution, so that the pH of the solution = 7, and let it stand; if the solution does not appear to be stratified, add 3,4 pyridine again Dicarboxylic acid, repeat and continue to stir for 30min and start to stand still and finish this section of operation until the solution appears stratified (the u...

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Abstract

The invention discloses a method for synthesizing copper-rare earth nanometer petal-shaped metal oxides, which comprises: weighing copper and rare earth soluble salt compounds in deionized water according to a molar ratio of 0.3 to 2:1, and dissolving them in deionized water at 0 to 90 Stir at ℃ for 10-90 minutes; add coordination solvent, continue to stir, and let the solution stand for 30-120 minutes to obtain an acidic precursor; add a neutralizing precipitant to the acidic precursor solution to make the solution If stratification occurs, add the coordination solvent again, and repeat the operation from the beginning of stirring to the end of standing until the solution appears stratified; After 3-5 hours, a metal oxide material with a petal-like lamellar structure is obtained. The invention realizes the mixing of materials at the atomic size, and can accurately control the atomic ratio; after low-temperature sintering, a copper-rare earth nano-petal-like sheet structure with high purity and uniform sheets composed of nanoparticles is prepared.

Description

technical field [0001] The invention relates to a method for synthesizing copper-rare earth nano petal-shaped metal oxides, belonging to the technical field of nano powder synthesis. Background technique [0002] Rare earth elements have excellent physical and chemical properties, and the research on rare earth element composite oxides has always been a research hotspot at home and abroad. Rare earth composite oxide materials have attracted great attention due to their unique properties and attractive application prospects. There are many synthetic methods for this type of compound, mainly including the following: [0003] (1) Sol-gel method: the alkoxide or organic complex of the reactant is hydrolyzed to generate the corresponding hydroxide or water-containing oxide sol, which is further condensed and polymerized to form a gel, and finally separated and dried to produce get a one-dimensional material. During this process, the morphology of the product can be controlled ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/00B82Y30/00B82Y40/00
Inventor 刘宣文郭瑞苏娜刘芳辰李朝阳刘广张杨张晓雷
Owner NORTHEASTERN UNIV LIAONING
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