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Preparation method of molybdate radical-thermomagnetic intelligent porous imprinted polymer

An imprinted polymer, molybdate technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of unstable performance of imprinted polymers, limited application scope, easy agglomeration of ferric tetroxide, etc., to achieve efficient selection. The effect of improving the mass transfer rate and adsorption rate, and improving the stability

Active Publication Date: 2021-07-13
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ferric oxide is easy to agglomerate and oxidize, and the performance of imprinted polymers prepared by using ferric oxide as stable particles is unstable in acidic conditions, which further limits their application range

Method used

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  • Preparation method of molybdate radical-thermomagnetic intelligent porous imprinted polymer
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  • Preparation method of molybdate radical-thermomagnetic intelligent porous imprinted polymer

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preparation example Construction

[0029] A preparation method of molybdate-temperature magnetic intelligent porous imprinted polymer, comprising the following steps:

[0030] ⑴Add iron ferric oxide@polydopamine nanoparticles, 2-methyl-2(dodecyltrithiocarbonate) propionic acid, 4-dimethylaminopyridine in order in dichloromethane, pass through under ice bath Inject N with a purity of 99.999% 2 40 minutes; Then dropwise add dicyclohexylcarbodiimide-dichloromethane mixed solution, pass into N again 2 Seal it after 20~30 minutes; stir and react at 50~80℃, 500~2000r / min for 12~72 hours, and then use a magnet to separate the product to obtain the modified iron ferric oxide@polydopamine.

[0031] Among them: Fe3O4@polydopamine nanoparticles were prepared as follows: Add 1.50~6.00g of Fe3O4 to 75.00~300.00 mL of 10.0 mM pH=8.5 tris(hydroxymethyl)aminomethane-hydrochloric acid buffer solution Ultrasonic disperse the iron, add 0.10~0.40g dopamine after 15 minutes, stir at 70°C for 24 hours, wash and dry the reactant t...

Embodiment 1

[0041] Embodiment 1 A method for preparing molybdate-warm magnetic intelligent porous imprinted polymers, comprising the following steps:

[0042] ⑴ Add 0.50 g ferric oxide@ polydopamine nanoparticles, 1.00 g 2-methyl-2 (dodecyl trithiocarbonate) propionic acid, 1.00 g 4-dimethyl Aminopyridine, the purity of 99.999% N was introduced under ice bath 2 40 minutes; then dropwise add 10 mL of dicyclohexylcarbodiimide-dichloromethane mixed solution, and inject N 2 Seal after 30 minutes; after ultrasonication for 40 minutes, stir and react at 50°C and 500 r / min for 12 hours, and then use a magnet to separate the product to obtain modified ferric iron tetroxide@polydopamine, which is recorded as modified Fe 3 o 4 @PDA-g-RAFT NPs.

[0043] Among them: Fe3O4@polydopamine nanoparticles were prepared as follows: Add 3.00 g of Fe3O4 to 150.00 mL of 10.0 mMpH=8.5 tris(hydroxymethyl)aminomethane-hydrochloric acid buffer solution for ultrasonic dispersion, After 15 minutes, add 0.20 g of ...

Embodiment 2

[0052] Embodiment 2 A method for preparing a molybdate-warm magnetic intelligent porous imprinted polymer, comprising the following steps:

[0053] ⑴ Add 2.00 g ferric oxide@ polydopamine nanoparticles, 0.60 g 2-methyl-2 (dodecyl trithiocarbonate) propionic acid, 2.00 g 4-dimethyl Aminopyridine, the purity of 99.999% N was introduced under ice bath 2 40 minutes; then dropwise added 40 mL of dicyclohexylcarbodiimide-dichloromethane mixed solution, and introduced N 2 Seal after 30 minutes; after 40 minutes of ultrasonication, stir and react at 65°C and 1000 r / min for 36 hours, and then use a magnet to separate the product to obtain the modified Fe 3 o 4 @PDA-g-RAFT NPs.

[0054]Among them: Fe3O4@polydopamine nanoparticles were prepared as follows: 6.00 g of Fe3O4 was added to 300.00 mL of 10.0 mMpH=8.5 tris(hydroxymethyl)aminomethane-hydrochloric acid buffer solution for ultrasonic dispersion, After 15 minutes, add 0.40 g of dopamine, stir at 70°C for 24 hours, wash and dry ...

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Abstract

The invention relates to a preparation method of a molybdate radical-thermomagnetic intelligent porous imprinted polymer, wherein the method comprises the following steps: (1) adding ferroferric oxide@polydopamine nanoparticles, 2-methyl-2(dodecyl trithiocarbonate)propionic acid and 4-dimethylaminopyridine into dichloromethane, then dropwise adding a dicyclohexylcarbodiimide-dichloromethane mixed solution, and carrying out a stirring reaction, so as to obtain modified Fe3O4@PDA-g-RAFT NPs; (2) adding the modified Fe3O4@PDA-g-RAFT NPs, N,N-diethyl bisacrylamide and azodiisobutyronitrile into a 1,4-dioxane solution, and carrying out a stirring reaction, so as to obtain thermomagnetic solid particles; (3) dissolving N-hydroxymethyl acrylamide, methacrylic acid and ammonium molybdate in water, firstly adding the thermomagnetic solid particles, then dropwise adding an emulsifier OP-10, corn oil and ethylene glycol dimethacrylate, and uniformly stirring to obtain a particle stable-like high internal phase emulsion; and (4) adding ammonium persulfate and N,N,N,N-tetramethylethylenediamine into the particle stable-like high-internal-phase emulsion to react, and thus obtaining the product. The obtained polymer can improve the mass transfer rate and the adsorption rate.

Description

technical field [0001] The invention relates to the technical field of preparation of functional materials, in particular to a method for preparing a molybdate-warm magnetic intelligent porous imprinted polymer. Background technique [0002] As a strategic material, molybdenum is closely related to high-tech fields. Due to the scarcity of molybdenum resources, industrial molybdenum-containing wastes are used as secondary resources to develop new methods and technologies for the recycling and reuse of molybdenum resources. [0003] Due to its special preparation process, imprinted polymers endow them with specific recognition properties, and can achieve precise separation of templates in complex environments; moreover, imprinted polymers also have the advantages of simple preparation, low technical threshold for separation operations, and flexible design of scale according to needs , low equipment investment and process green environmental protection and other advantages. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F222/14C08F220/58C08F220/06C08J9/28B01J20/26B01J20/30C08L51/00
CPCC08F285/00C08J9/28B01J20/261B01J20/264B01J20/06C08J2351/00B01J2220/4812C08F222/102C08F220/58C08F220/06
Inventor 陈振斌火婷柳春丽陈正灿李慧
Owner LANZHOU UNIVERSITY OF TECHNOLOGY