Polyamine-loaded opening material and preparation method and application thereof

A technology of open-pore materials and porous materials, which is applied in the field of open-pore materials loaded with polyamines and its preparation, which can solve the problems of breaking into fragments, falling off of active substances, and easy dissolution, so as to improve mechanical stability and strong affinity Effect

Active Publication Date: 2018-05-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Since the active substances loaded on the carrier often exist in the form of linear polymers, which are easily dissolved or broken into fragments, if the adsorbent is prepared, if the stirring is

Method used

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  • Polyamine-loaded opening material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Preparation of open-pore material: polydopamine was prepared according to the literature (E. Chem.Commun., 2016, 52, 4691--4693) was loaded on the open-cell polyurethane sponge, and then 1g of the open-cell polyurethane sponge was taken and immersed in PEI buffer (PEI, 5mg / mL; phosphate buffer 10mM, 40mL) In the middle, stir gently for 12-24 hours; after taking it out, wash it with water and alcohol to get the open-pore material.

Embodiment 2

[0039] Preparation of the open-pore material expressed by dithiocarbamate: the PEI modified open-pore material prepared in Example 1 is immersed in potassium hydroxide or sodium hydroxide (amount equivalent to 1-2 molar equivalents of PEI units) ) in ethanol, carbon disulfide (1-2 molar equivalents of potassium hydroxide or sodium hydroxide) was added dropwise at 0°C, and the dropwise was completed within half an hour, then gradually warmed to room temperature and continued to stir gently for 18h. After the open-pore material is pulled out, it is washed with alcohol and water to obtain the open-pore material modified by dithiocarbamate.

Embodiment 3

[0041] Get the open-pore material (1g) of the dithiocarbamic acid modification that prepares in embodiment 2, drop into containing Cd 2+ 、Cu 2+ , Pb 2+ 、Co 2+ 、Ni 2+ aqueous solution (20mL, the content of each metal is about 50ppm) and let it stand for 24 hours. After that, the open-pore material was removed, and the water sample was detected by inductively induced plasma spectroscopy (ICP), and the residual Cd 2+ 、Cu 2+ , Pb 2+ 、Co 2+ 、Ni 2+ The concentrations are 1.2ppm, 0.12ppm, 1.2ppm, 0.25ppm, 0.99ppm respectively.

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Abstract

The invention relates to a polyamine-loaded opening material and a preparation method and application thereof. The opening material comprises an opening polymeric sponge and modified polydopamine loaded on the opening polymeric sponge, and the modified polydopamine is polyethylenimine modified polydopamine; during preparation, the polydopamine is loaded on the opening polymeric sponge, and then ismodified; and during application, the opening material is modified by carbon disulfide, amino in polyethylenimine is transformed into an aminodithioformic acid group which is used for adsorbing heavymetal ions in water, or precious metal nano-particles are loaded on the opening material, and is used for catalyzing chemical reaction. Compared with the prior art, the preparation method has the advantages that the polydopamine modified opening material is treated by the polyethylenimine, a polyamine functional platform can be introduced, furthermore, the opening material can be crosslinked withthe polydopamine, mechanical stability of the opening material is improved, and application is extensive.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a polyamine-loaded open-pore material and a preparation method and application thereof. Background technique [0002] Functional materials refer to materials that have specific functions through light, electricity, magnetism, heat, chemistry, biochemistry, etc., and are widely used. For example, in the field of water purification, the metal ion adsorption performance of some adsorbents can be used to remove heavy metal ions in water. [0003] As we all know, heavy metal ions are highly toxic, have many types, do not degrade, and will continue to exert toxic effects. The pollution of soil and water sources is increasing, which has attracted people's attention. With the development of mining, metallurgy and other industries and the widespread use and low recycling of electronic devices, the global metal pollution situation is showing an increasingly serious trend. Alth...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J31/06B01J35/10C02F1/28C02F101/20
CPCB01J20/267B01J31/06B01J35/1009B01J35/1076C02F1/285C02F2101/20
Inventor 万德成金明潘海燕
Owner TONGJI UNIV
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