Preparation method of porous AMP/CNC-PUF adsorption material and application thereof

An adsorption material and composite material technology, which is applied in the field of preparation of porous AMP/CNC-PUF adsorption materials, can solve the problems of complex treatment process, poor mechanical strength, difficult recovery, etc., and achieve good application prospects, easy recovery, and easy delivery. Effect

Inactive Publication Date: 2017-07-25
BINZHOU UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] In order to overcome the poor mechanical strength of ammonium phosphomolybdate in the prior art, it is difficult to form and difficult to recycle, and it is used to absorb radioactive elements rubidium and cesium. A method for preparing a three-dimensional high-performance cesium adsorption material in which ammonium nanoparticles are encapsulated in foamed polyurethane sponge. The adsorption material is obtained by loading ammonium phosphomolybdate on nano-carbon particles, and then encapsulated in foamed polyurethane sponge. , the preparation not only simplifies the treatment process after adsorption, but also fully exposes the active sites of adsorption and improves the adsorption efficiency. It has strong industrial practicability and is suitable for popularization and application.

Method used

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  • Preparation method of porous AMP/CNC-PUF adsorption material and application thereof
  • Preparation method of porous AMP/CNC-PUF adsorption material and application thereof

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Effect test

Embodiment 1

[0023] Embodiment 1 A kind of preparation method of porous AMP / CNC-PUF adsorption material

[0024] Ultrasonically disperse 50 mg nanometer graphene oxide into 100 mL deionized water; under mechanical stirring, quickly add the aqueous solution containing 3 mmol ammonium molybdate into the above graphene oxide suspension, continue to stir ultrasonically for 20 min, add 2.5 mmol phosphoric acid , and adjust the pH of the mixture to 1 with concentrated nitric acid; stir the above mixture at room temperature for 1.5 h, then age at room temperature for 20 h, centrifuge, wash 3 times with 1 mol / L nitric acid, and then wash 3 times with deionized water , and dried at 40 °C for 6 h to obtain the composite material AMP / CNC.

[0025] AMP / CNC, NB-9000B and Pluronic L-62 were foamed and polymerized under high-speed stirring (3000 r / min) according to the volume ratio of 10:100:1, and AMP / CNC was fixed on the cell wall of polyurethane foam. After washing with ion water three times, drying ...

Embodiment 2

[0026] Embodiment 2 A kind of preparation method of porous AMP / CNC-PUF adsorption material

[0027] Ultrasonically disperse 50 mg of carbon nanotubes into 100 mL of deionized water; under mechanical stirring, quickly add an aqueous solution containing 3 mmol of ammonium molybdate into the suspension of carbon nanotubes, continue to stir and sonicate for 25 min, add 2.5 mmol of phosphoric acid, and use Concentrated nitric acid was used to adjust the pH of the mixed solution to 0.5; the above mixed solution was stirred at room temperature for 1 h, then aged at room temperature for 18 h, centrifuged, washed twice with 1 mol / L nitric acid, and then washed twice with deionized water. After drying at 40 °C for 5 h, the composite material AMP / CNC can be obtained.

[0028] AMP / CNC, NB-9000B and polyoxypropylene glyceryl ether were foamed and polymerized under high-speed stirring (2000 r / min) according to the volume ratio of 9:100:1, and AMP / CNC was fixed on the cell wall of polyuretha...

Embodiment 3

[0029] Embodiment 3 A kind of preparation method of porous AMP / CNC-PUF adsorption material

[0030] Ultrasonic dispersion of 50 mg nano-graphene oxide into 100 mL deionized water; under mechanical stirring, the aqueous solution dissolved in 3 mmol ammonium molybdate was quickly added to the above-mentioned graphene oxide suspension, continued to stir ultrasonically for 30 min, and added 2.5 mmol phosphoric acid, And use concentrated nitric acid to adjust the pH of the mixture to 1.5; stir the above mixture at room temperature for 2 h, then age at room temperature for 22 h, centrifuge, wash 4 times with 1 mol / L nitric acid, and then wash 4 times with deionized water , and dried at 50 ℃ for 5h, the composite material AMP / CNC can be obtained.

[0031] AMP / CNC, NB-9000B and polyoxyethylene polyoxypropanol amine ether were foamed and polymerized under high-speed stirring (5000 r / min) according to the volume ratio of 11:100:1, and AMP / CNC was fixed on the polyurethane foam cell The w...

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Abstract

The invention relates to a preparation method of a porous AMP / CNC-PUF adsorption material and an application thereof and belongs to the fields of nano composite materials and environmental pollution repair. In order to overcome the technical defects that in the prior art, ammonium phosphomolybdate is poor in mechanical strength, hard to form and recover and complex in treatment process if being used for adsorption of radioactive elements, for example, rubidium and caesium, the invention provides the preparation method of the porous AMP / CNC-PUF adsorption material and the application thereof. The adsorption material is prepared by the steps: loading ammonium phosphomolybdate on nano carbon microparticles; and then capsulating the nano carbon microparticles in foamed polyurethane sponge. The treatment process after adsorption is simplified, the adsorption activity part can be fully exposed, and the adsorption efficiency is improved. The prepared composite material for repairing caesium ion polluted environments such as a water body and soil has a wide application prospect in the field of repairing a nuclear polluted environment.

Description

technical field [0001] The invention relates to a preparation method and application of a porous AMP / CNC-PUF adsorption material, and belongs to the field of nanocomposite materials and environmental pollution restoration. Background technique [0002] With the rapid development of the world economy, the energy crisis is gradually emerging. Nuclear energy has become an important part of the world's energy supply due to its unique advantages of economy, cleanliness and high efficiency. It has made great contributions to the development of the world economy, but it has also brought about major environmental nuclear pollution problems. Cs-137 and Cs-134 are two isotopes of radioactive cesium with half-lives of 30 and 2.06 years, respectively. These radioactive isotopes produce strong radiating gamma rays during the decay process, releasing high-energy β particles, which are the culprits of radioactive nuclear pollution. Finding a material and method to selectively remove cesi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
CPCB01J20/0292B01J20/20B01J20/26
Inventor 杨红军谢文军夏江宝
Owner BINZHOU UNIV
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