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Preparation method of magnetic mesoporous free radical controlled polymer ion printing adsorbing agent

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

Inactive Publication Date: 2014-03-12
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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  • Preparation method of magnetic mesoporous free radical controlled polymer ion printing adsorbing agent
  • Preparation method of magnetic mesoporous free radical controlled polymer ion printing adsorbing agent
  • Preparation method of magnetic mesoporous free radical controlled polymer ion printing adsorbing agent

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 0.1 g Fe(NO 3 ) 3 9H 2 Dissolve O in 5 mL of methanol, continue to add 0.1 g of SBA-15, stir well until the mixture is uniform, and then place it in an oven at 80°C for drying. 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] Take 0.1 g Fe synthesized in the above step (1) 3 o 4 Disperse SBA-15 in 10 mL of anhydrous toluene, continue to add 0.1 mL of 4-chloromethyl-phenyltri...

Embodiment 2

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

[0047] Weigh 0.2 g Fe(NO 3 ) 3 9H 2 Dissolve O in 5 mL of methanol, continue to add 0.1 g of SBA-15, stir well until the mixture is uniform, and then place it in an oven at 80°C for drying. 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 raised to 400°C at a rate of 5°C / min and kept for 20 min 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] Take 0.3 g Fe synthesized in the above step (1) 3 o 4 SBA-15 was dispersed in 15 mL of anhydrous toluene, and 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 0.4 g Fe(NO 3 ) 3 9H 2 Dissolve O in 5 mL of methanol, continue to add 0.1 g of SBA-15, stir well until the mixture is uniform, and then place it in an oven at 80°C for drying. 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 raised to 400°C at a rate of 5°C / min and kept for 20 min to obtain Fe-doped 3 o 4 particles of magnetic mesoporous SBA-15 (Fe 3 o 4 SBA-15).

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

[0063] Take 0.7 g Fe synthesized in the above step (1) 3 o 4 SBA-15 was dispersed in 25 mL of anhydrous toluene, and 0.625 mL of 4-chloromethyl-phenyltrimethoxysilane...

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Abstract

The invention relates to a preparation method of a magnetic mesoporous free radical controlled polymer ion printing adsorbing agent and belongs to technical field of the preparation of environment function materials. The preparation method comprises the following steps of forming a magnetic mesoporous SBA-15(FeO4@SBA-15) through adulteration; modifying the FeO4@SBA-15 in a benzylation manner so as to obtain a FeO4@SBA-15-C1; importing a RAFT reagent to obtain a FeO4@SBA-15-RAFT; and finally preparing the magnetic mesoporous free radical controlled polymer ion printing adsorbing agent by taking the FeO4@SBA-15-RAFT as a host material and Ce (III) as a template, and inspecting the adsorptive property of the magnetic mesoporous free radical controlled polymer ion printing adsorbing agent to Ce (III) in a water solution. The result proves that the adsorbing agent has the advantages that the selectivity is high, the separating effect is remarkable, and the adsorbing agent can be used many times repeatedly.

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 Ce 3 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 C...

Claims

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Application Information

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Patent Type & Authority Applications(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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