Beta-cyclodextrin polymer adsorbent, and preparation method and application thereof

A cyclodextrin polymer and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, water pollutants, etc., can solve problems such as insufficient adsorption capacity, achieve excellent adsorption effect, and enhance inclusion effect , the effect of increasing the contact area

Active Publication Date: 2018-12-21
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since ethylenediaminetetraacetic acid is both a chelating agent and a crosslinking agent, and it is easy to block the cyclodextrin cavity, the adsorption capacity of this adsorbent for organic dyes and heavy metal ions is not ideal.

Method used

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  • Beta-cyclodextrin polymer adsorbent, and preparation method and application thereof
  • Beta-cyclodextrin polymer adsorbent, and preparation method and application thereof
  • Beta-cyclodextrin polymer adsorbent, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] (1) Preparation of modified β-cyclodextrin: Dissolve 2 parts by weight of β-cyclodextrin in 40 parts by volume of dry pyridine under stirring, and when the temperature of the above solution drops below 0°C, 1.5 parts by weight are dissolved 30 parts by volume of dry pyridine solution of trimethylchlorosilane was slowly added dropwise to the solution, and reacted for 12 hours at room temperature. After the reaction, the pyridine was removed, the solid product obtained was dissolved in 40 parts by volume of chloroform and 50 parts by volume of 1mol / L KHSO 4 The residual pyridine in the organic solvent is washed with an aqueous solution and 50 parts by volume of deionized water, the organic phase is collected and the solvent is removed to obtain a white solid product, which is vacuum dried to obtain the first cross-section silane-protected β-cyclodextrin derivative. 2 parts by weight of the first cross-section silane-protected β-cyclodextrin derivative, 0.6 parts by volume o...

Embodiment 2

[0052] (1) Preparation of modified β-cyclodextrin: Dissolve 7 parts by weight of β-cyclodextrin in 120 parts by volume of dry pyridine under stirring, and when the temperature of the above solution drops below 0°C, 4.9 parts by weight are dissolved 40 parts by volume of dry pyridine solution of trimethylchlorosilane was slowly added dropwise to the solution, and reacted for 19 hours at room temperature. After the reaction, the solvent was removed, the solid product obtained was dissolved in 60 parts by volume of dichloromethane and 100 parts by volume of 1mol / L KHSO 4 The residual pyridine in the organic solvent is washed with an aqueous solution and 80 parts by volume of deionized water, the organic phase is collected and the solvent is removed to obtain a white solid product, which is vacuum dried to obtain the first cross-section silane-protected β-cyclodextrin derivative. 7.7 parts by weight of the first cross-section silane-protected β-cyclodextrin derivative, 12 parts by v...

Embodiment 3

[0056] (1) Preparation of modified β-cyclodextrin: 10 parts by weight of β-cyclodextrin were stirred and dissolved in 180 parts by volume of dry pyridine, and when the temperature of the above solution dropped below 0°C, 11 parts by weight were dissolved 100 parts by volume of dry pyridine solution of tert-butyldimethylchlorosilane was slowly added dropwise to the solution, and reacted at room temperature for 21 hours. After the reaction, the solvent was removed, the solid product obtained was dissolved in 150 parts by volume of chloroform and 100 parts by volume of 1mol / L KHSO 4 The residual pyridine in the organic solvent is washed with an aqueous solution and 100 parts by volume of deionized water, the organic phase is collected and the solvent is removed to obtain a white solid product, which is vacuum dried to obtain the first cross-section silane-protected β-cyclodextrin derivative. 6.1 parts by weight of the first cross-section silane-protected β-cyclodextrin derivative, ...

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Abstract

The invention discloses a beta-cyclodextrin polymer adsorbent applicable to adsorption of dye and heavy metal ions, and a preparation method and application thereof. According to the method, modifiedbeta-cyclodextrin, obtained by reaction between a silane-protected beta-cyclodextrin derivative and alkenyl anhydride, and heterocyclic olefinic monomers are subjected to free-radical crosslinking copolymerization to obtain the beta-cyclodextrin polymer adsorbent, wherein the structural general formula is shown in the description. The porous large-specific-surface copolymer can be formed during copolymerization between the modified beta-cyclodextrin and the heterocyclic olefinic monomers, and different adsorption sites are provided for the organic dye and the heavy metal ions, so that the adsorption capacity of the adsorbent can be improved greatly, and the mutual inhibition of the organic dye and the heavy metal ions as wells as the poor removal effect can be relieved effectively.

Description

Technical field [0001] The invention belongs to the technical field of polymer adsorbents and their preparation and application, and specifically relates to a β-cyclodextrin polymer adsorbent and a preparation method and application thereof. Background technique [0002] With the rapid development of my country's economy and urbanization, wastewater from industries such as metallurgy, minerals, batteries, textiles, and leather contains a large amount of dyes and heavy metal ions. Since most organic dyes and heavy metal ions are highly toxic, they can cause cancer, teratogenesis, mutagenesis, and are easily enriched in organisms. Therefore, even low concentrations of organic dyes and heavy metal ions are harmful to human health and the entire ecology. The system poses a serious threat. For this reason, the removal of dyes and heavy metal ions in the water body has become urgent. [0003] At present, the conventional treatment methods of dye and heavy metal ion wastewater include: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C08F251/00C08F226/06C02F101/20C02F101/30
CPCB01J20/264B01J2220/4812B01J2220/4825C02F1/285C02F1/286C02F2101/20C02F2101/308C08F251/00C08F226/06
Inventor 白蓝秦小梅王玉忠郭德明谭以正李蕾
Owner SICHUAN UNIV
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