Multi-ion adsorption material prepared by inorganic ion doping and large-steric-hindrance organic modification

A technology of adsorption materials and inorganic ions, which is applied in the field of environment and materials, can solve the problems that adsorption materials cannot be adsorbed at the same time, acid and alkali are difficult to coexist, and achieve the effects of environmental protection, regular channels, and avoiding spontaneous neutralization

Active Publication Date: 2015-05-13
FUZHOU UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a multi-ion adsorption material prepared by inorganic ion doping and large steric hindrance organic modification, which realizes the coexistence of acid-base sites in the aqueous phase adsorption material, and can simultaneously and efficiently absorb mixed pollution of anion and yang in wastewater Ions, purify water resources, solve the problem that it is difficult for acid and alkali to coexist in the same matrix and the adsorption materials cannot simultaneously adsorb anions and cations, the environmental benefits are remarkable, and it has the value of popularization and application

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  • Multi-ion adsorption material prepared by inorganic ion doping and large-steric-hindrance organic modification

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Embodiment 1

[0023] A multi-ion adsorption material prepared by inorganic ion doping and large steric hindrance organic modification, the preparation method specifically includes the following steps:

[0024] 1) Mix the aqueous solution containing 0.4318g ferric nitrate with 4mL TEOS and 68mL ethanol, add 20mL NH 4 OH solution was stirred until clear;

[0025] 2) Then add 100mL of an aqueous solution in which 1g of CTBA is dissolved, stir and react at room temperature for 3h, then undergo hydrothermal crystallization, filtration, washing, drying, and calcination to synthesize Fe-MCM-41 with a Si / Fe ratio of 10;

[0026] 3) After drying the synthesized Fe-MCM-41 at 150°C, take 1.0g and add it to a toluene solution containing 5mL APTES, stir vigorously at room temperature for 20h, filter, wash the filter cake with a large amount of ethanol, and dry to obtain a white powder ;

[0027] 4) Add 1.0 g of the white powder obtained in step 3) into a saturated tetrahydrofuran solution containing 1...

Embodiment 2

[0031] A multi-ion adsorption material prepared by inorganic ion doping and large steric hindrance organic modification, the preparation method specifically includes the following steps:

[0032] 1) Mix the aqueous solution containing 0.4318g ferric nitrate with 4mL TEOS and 68mL ethanol, add 20mL NH 4 OH solution was stirred until clear;

[0033] 2) Then add 100mL of an aqueous solution in which 1g of CTBA is dissolved, stir and react at room temperature for 3h, then undergo hydrothermal crystallization, filtration, washing, drying, and calcination to synthesize Fe-MCM-41 with a Si / Fe ratio of 10;

[0034] 3) After drying the synthesized Fe-MCM-41 at 150°C, take 1.0g and add it to a toluene solution containing 5mL APTES, stir vigorously at room temperature for 20h, filter, wash the filter cake with a large amount of ethanol, and dry to obtain a white powder ;

[0035] 4) Add 1.0 g of the white powder obtained in step 3) into a saturated tetrahydrofuran solution containing 1...

Embodiment 3

[0039] A multi-ion adsorption material prepared by inorganic ion doping and large steric hindrance organic modification, the preparation method specifically includes the following steps:

[0040] 1) Mix the aqueous solution containing 0.04318g ferric nitrate with 4mL TEOS and 68mL ethanol, add 20mL NH 4 OH solution was stirred until clear;

[0041] 2) Then add 100mL of an aqueous solution in which 1g of CTBA is dissolved, stir and react at room temperature for 3h, then undergo hydrothermal crystallization, filtration, washing, drying, and calcination to synthesize Fe-MCM-41 with a Si / Fe ratio of 100;

[0042] 3) After drying the synthesized Fe-MCM-41 at 150°C, take 1.0g and add it to a toluene solution containing 5mL APTES, stir vigorously at room temperature for 20h, filter, wash the filter cake with a large amount of ethanol, and dry to obtain a white powder ;

[0043] 4) Add 1.0 g of the white powder obtained in step 3) into a saturated tetrahydrofuran solution containing...

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Abstract

The invention discloses a multi-ion adsorption material prepared by inorganic ion doping and large-steric-hindrance organic modification. A Fe-MCM-41 adsorption material is synthesized from hexadecyl trimethyl ammonium bromide, ethyl orthosilicate and inorganic iron as main raw materials by adopting a direct synthesis process, a framework is doped with iron ions, hydroxyls in the framework are activated to generate a relatively strong acid site, and the surface of the Fe-MCM-41 adsorption material is grafted with an organic amine molecule through a silane coupling agent and a large-steric-hindrance organic functional group to generate a base site, so that the multi-ion adsorption material is prepared. The multi-ion adsorption material can avoid spontaneous recombination of the acid and base sites due to a steric hindrance effect generated by the introduced large-steric-hindrance organic functional group, realizes coexistence of the acid and base sites, solves difficult problems of difficult coexistence of acid and base of a same matrix and non simultaneous adsorption of negative and positive ions by a general adsorption material, and can simultaneously and efficiently adsorb negative and positive mixed pollution ions in wastewater and purify water resources, and the preparation method of the material is simple, so that the material has promotion and application values.

Description

technical field [0001] The invention belongs to the field of environment and materials, and in particular relates to a multi-ion adsorption material prepared by inorganic ion doping and organic modification with large steric hindrance. Background technique [0002] With the continuous development of human society, the problem of environmental pollution is becoming more and more serious around the world, and the problem of water pollution has become an important factor restricting the sustainable development of human economy. Compared with air pollution, water pollution comes from many sources and its composition is very complex. Water pollution is divided into suspended matter, colloid and dissolved matter according to the state of pollutants; according to chemical characteristics, it is divided into inorganic matter and organic matter. Among them, the pollution of dissolved inorganic substances is the most common, such as PO 4 3- 、HPO 4 2- 、H 2 PO 4 - , CO 3 2- 、H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F1/58
CPCB01J20/226C02F1/288
Inventor 于岩何亚军陈霏云
Owner FUZHOU UNIV
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