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Preparation and application of magnetic ferric oxide/ammonium phosphomolybdate porous composite material

A porous composite material, magnetic iron oxide technology, applied in the direction of alkali metal oxides/hydroxides, alkali metal compounds, inorganic chemistry, etc., can solve the problem of iron tetroxide mosaic ammonium phosphomolybdate polyhedral crystal preparation method has not been reported and other problems, to achieve the effect of good magnetic separation characteristics, high degree of crystallization, and easy access to raw materials

Active Publication Date: 2016-12-14
河北久亿有色金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] After retrieval, the preparation method of ammonium phosphomolybdate polyhedral crystals embedded in ferric iron tetroxide has not been reported so far

Method used

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  • Preparation and application of magnetic ferric oxide/ammonium phosphomolybdate porous composite material
  • Preparation and application of magnetic ferric oxide/ammonium phosphomolybdate porous composite material
  • Preparation and application of magnetic ferric oxide/ammonium phosphomolybdate porous composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 A kind of preparation method of magnetic iron oxide / ammonium phosphomolybdate porous composite material

[0032] Described preparation method specifically comprises the following steps:

[0033] (1) Ultrasonic dispersion of 0.5 g superparamagnetic 10 nm magnetic iron oxide nanoparticles into 500 mL 2 M HNO 3 In the solution, stir evenly and let it stand for 35 min, wash the magnetic particles with deionized water three times, and then ultrasonically disperse them into 200 mL of deionized water, add 80 mL of 135.9 mM ammonium molybdate solution to it under mechanical stirring conditions, continue After stirring for 15 min, the intermediate solution 1 was obtained.

[0034] (2) Accurately measure 2.5 ml of concentrated nitric acid, slowly add it to 17.5 ml of deionized water, shake well, add 1.0 g of potassium pyrophosphate to it, stir to dissolve, and obtain intermediate solution 2.

[0035] (3) Under the condition of mechanical stirring, the reaction temp...

Embodiment 2

[0036] Embodiment 2 A kind of preparation method of magnetic iron oxide / ammonium phosphomolybdate porous composite material

[0037] Described preparation method specifically comprises the following steps:

[0038] (1) Ultrasonic dispersion of 0.2g superparamagnetic 8nm magnetic iron oxide nanoparticles into 500 mL 2 M HNO 3 In the solution, stir evenly and let it stand for 30 min, wash the magnetic particles with deionized water for 4 times, and then ultrasonically disperse them into 200 mL of deionized water, add 80 mL of 135.9 mM ammonium molybdate solution to it under mechanical stirring conditions, continue After stirring for 10 min, intermediate solution 1 was obtained.

[0039] (2) Accurately measure 4 ml of concentrated nitric acid, slowly add it to 16 ml of deionized water, shake well, add 1.0 g of potassium pyrophosphate to it, stir to dissolve, and obtain intermediate solution 2.

[0040] (3) Under the condition of mechanical stirring, the reaction temperature is ...

Embodiment 3

[0041] Embodiment 3 A kind of preparation method of magnetic iron oxide / ammonium phosphomolybdate porous composite material

[0042] Described preparation method specifically comprises the following steps:

[0043] (1) Ultrasonic dispersion of 0.2 g superparamagnetic 12 nm magnetic iron oxide nanoparticles into 500 mL 2 M HNO 3 In the solution, stir evenly and let it stand for 40 min, wash the magnetic particles with deionized water three times, and then ultrasonically disperse them into 200 mL of deionized water, add 80 mL of 135.9 mM ammonium molybdate solution to it under mechanical stirring conditions, continue Stir for 20 min to obtain intermediate solution 1.

[0044] (2) Accurately measure 2 ml of concentrated nitric acid, slowly add it to 18 ml of deionized water, shake well, add 1.0 g of potassium pyrophosphate to it, stir to dissolve, and obtain intermediate solution 2.

[0045] (3) Under the condition of mechanical stirring, the reaction temperature is controlled ...

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Abstract

The invention relates to a preparation method of a magnetic ferric oxide / ammonium phosphomolybdate porous composite material and application, and belongs to the fields of nano-composite materials and environmental remediation. According to the preparation method, the prepared magnetic ferric oxide nanoparticles are added in the self-assembling synthesis process of ammonium phosphomolybdate polygonal crystals, the materials are subjected to surface modification, and the magnetic ferric oxide / ammonium phosphomolybdate porous composite material is synthesized finally. In the composite material obtained by the preparation method, the magnetic ferric oxide nanoparticles are inlaid in the porous structures of the ammonium phosphomolybdate polygonal crystals uniformly, so that the magnetic ferric oxide / ammonium phosphomolybdate porous composite material has the magnetic recovery characteristic and the preferential adsorption characteristic of ammonium phosphomolybdate on caesium ions, has low shape difference rate and low falling-off rate during use, and has better application prospect in the fields of nuclear pollution treatment and the like.

Description

technical field [0001] The invention relates to the preparation and application of a magnetic iron oxide / ammonium phosphomolybdate porous composite material, belonging to the field of nanocomposite materials and environmental restoration. technical background [0002] The steady development of the nuclear power industry provides an effective way to solve the world's energy crisis, but it also brings potential hidden dangers of nuclear radiation pollution. On the one hand, nuclear power plants will produce a certain amount of radioactive nuclear waste during their daily operation; on the other hand, once a nuclear reactor has flaws in management links and subtle operating techniques, nuclear material leakage, pollution, and proliferation will occur, causing serious damage to human society and society. The ecological environment has brought about extremely serious disasters. Radioactive cesium is the main component of nuclear pollution. During the decay process, it will relea...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/06C02F1/28
CPCB01J20/0259B01J20/06B01J20/28009B01J20/28054B01J2220/42B01J2220/4806C02F1/281C02F2101/006
Inventor 杨红军孙景宽李永刘学文
Owner 河北久亿有色金属科技有限公司
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