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A kind of preparation method of magnetic mesoporous free radical controllable polymeric ion-imprinted adsorbent

A technology of ion imprinting and free radicals, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems that have not been reported yet.

Inactive Publication Date: 2016-04-06
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, RAFT polymerization is widely used in the synthesis of specific structures and multifunctional polymers, however, the grafting of RAFT ion-imprinted polymers on the surface of magnetically functionalized mesoporous materials has not been reported yet.

Method used

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  • A kind of preparation method of magnetic mesoporous free radical controllable polymeric ion-imprinted adsorbent
  • A kind of preparation method of magnetic mesoporous free radical controllable polymeric ion-imprinted adsorbent
  • A kind of preparation method of magnetic mesoporous free radical controllable polymeric ion-imprinted adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Synthesis of magnetic mesoporous SBA-15 (Fe 3 o 4 SBA-15)

[0033] Weigh 0.1gFe(NO 3 ) 3 9H 2 Dissolve O in 5mL of methanol, continue to add 0.1g of SBA-15, stir well until the mixture is uniform, and then dry it in an oven at 80°C. The solid obtained after drying was fully ground into powder, exposed to acetic acid vapor at 80°C for 1 h, and then dried in the open at 80°C to remove physically adsorbed acetic acid molecules. Finally, put the dried orange-yellow powder into the tube furnace, N 2 Under protection, the temperature was programmed to rise to 400°C at 5°C / min and kept for 20 minutes to obtain Fe-doped 3 o 4 particles of magnetic mesoporous SBA-15 (Fe 3 o 4 SBA-15).

[0034] (2) Benzylated Fe on the surface 3 o 4 Preparation of SBA-15 (Fe 3 o 4 SBA-15-Cl)

[0035] Get the 0.1gFe synthesized in the above-mentioned steps (1) 3 o 4 Disperse SBA-15 in 10 mL of anhydrous toluene, continue to add 0.1 mL of 4-chloromethyl-phenyltrimethoxysilane, ...

Embodiment 2

[0046] (1) Synthesis of magnetic mesoporous SBA-15 (Fe 3 o 4 SBA-15)

[0047] Weigh 0.2gFe(NO 3 ) 3 9H 2 Dissolve O in 5mL of methanol, continue to add 0.1g of SBA-15, stir well until the mixture is uniform, and then dry it in an oven at 80°C. The solid obtained after drying was fully ground into powder, exposed to acetic acid vapor at 80°C for 1 h, and then dried in the open at 80°C to remove physically adsorbed acetic acid molecules. Finally, put the dried orange-yellow powder into the tube furnace, N 2 Under protection, the temperature was programmed to rise to 400°C at 5°C / min and kept for 20 minutes to obtain Fe-doped 3 o 4 particles of magnetic mesoporous SBA-15 (Fe 3 o 4 SBA-15).

[0048] (2) Benzylated Fe on the surface 3 o 4 Preparation of SBA-15 (Fe 3 o 4 SBA-15-Cl)

[0049] Get the 0.3gFe synthesized in the above-mentioned steps (1) 3 o 4 Disperse SBA-15 in 15 mL of anhydrous toluene, continue to add 0.3 mL of 4-chloromethyl-phenyltrimethoxysilane, ...

Embodiment 3

[0060] (1) Synthesis of magnetic mesoporous SBA-15 (Fe 3 o 4 SBA-15)

[0061] Weigh 0.4gFe(NO 3 ) 3 9H 2 Dissolve O in 5mL of methanol, continue to add 0.1g of SBA-15, stir well until the mixture is uniform, and then dry it in an oven at 80°C. The solid obtained after drying was fully ground into powder, exposed to acetic acid vapor at 80° C. for 1 h, and then dried in the open at 80° C. to remove physically adsorbed acetic acid molecules. Finally, put the dried orange-yellow powder into the tube furnace, N 2 Under protection, the temperature was programmed to rise to 400°C at 5°C / min and kept for 20 minutes to obtain Fe-doped 3 o 4 particles of magnetic mesoporous SBA-15 (Fe 3 o 4SBA-15).

[0062] (2) Benzylated Fe on the surface 3 o 4 Preparation of SBA-15 (Fe 3 o 4 SBA-15-Cl)

[0063] Get the 0.7gFe synthesized in the above-mentioned steps (1) 3 o 4 Disperse SBA-15 in 25mL of anhydrous toluene, continue to add 0.625mL of 4-chloromethyl-phenyltrimethoxysilan...

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Abstract

The present invention involves a method of preparing a magnetic medium free radicals, controlling aggregate ionic marks, which are the field of environmental functional materials preparation.First, the magnetic medium SBA-15 (Fe3O4SBA-15) is obtained, and then the FE3O4SBA-15 is performed to obtain the FE3O4SBA-15-CL.Then introduced Raft reagents to get Fe3O4SBA-15-RAFT.Finally, use Fe3O4SBA-15-RAFT as the matrix material, CE (?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????Nt times, it was prepared for a magnetic mesh free radicals to control polymer ions, and examined its adsorption performance to CE () in the water solution.The results show that the adsorbent has the advantages of high selectivity, significant separation effects, and a large number of repeated uses.

Description

technical field [0001] The invention relates to a preparation method of a magnetic mesoporous radical controllable polymerized ion imprinting adsorbent, which belongs to the technical field of preparation of environmental functional materials. Background technique [0002] The development and utilization of nuclear materials has promoted the development of the world, but the sources of radioactive elements in the environment have also increased, which poses a great direct or indirect threat to human survival. Nuclear fission products are composed of 30 elements and more than 200 nuclides that can produce α, β and γ radiation, most of which are metal elements (cesium, strontium, molybdenum, cerium, thorium, etc.). Among them, low and medium radioactive cerium has 141 Ce, 143 Ce and 144 Ce3 isotopes, in 235 Among the more than 300 kinds of fission products of U, their output is relatively high, about 6%, and the isotopes that may cause harm to the environment are 141 Ce a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30
Inventor 刘燕陈瑞孟敏佳宋志龙王娟孟祥国刘方方
Owner JIANGSU UNIV
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