Succinyl-beta-cyclodextrin modified PAN film adsorbing material and preparation method thereof

A technology of cyclodextrin and succinyl, which is applied in the chemical and environmental fields, can solve the problems of poor separation selectivity, load failure, and long time consumption, and achieve the effects of easy recovery and recycling, improved removal efficiency, and good adsorption performance
CN109985609AActive Publication Date: 2019-07-09SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2019-07-09

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Abstract

The invention relates to a succinyl-beta-cyclodextrin modified PAN film adsorbing material and a preparation method thereof. The method comprises the following steps: firstly forming a dense polydopamine intermediate layer on a PAN film, wherein the polydopamine intermediate layer contains a large amount of hydrophilic hydroxyl and amino functional groups, and performing dehydration condensation on the amino of the polydopamine intermediate layer and carboxyl of succinyl-beta-cyclodextrin to obtain the succinyl-beta-cyclodextrin modified PAN film adsorbing material. The adsorbing material provided by the invention has good adsorption performance on hexavalent uranium through enveloping action of a hollow cavity of the cyclodextrin and uranium and action of carboxyl of succinyl and the hexavalent uranium, greatly improves the removal efficiency of the hexavalent uranium, and is easy to recover and recycle; and the succinyl-beta-cyclodextrin particles are firmly loaded and not easily disembedded, and have uniform loading, thereby increasing the contact area with pollutants, and improving the treatment efficiency.
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Description

technical field

[0001] The invention relates to a succinyl-β-cyclodextrin modified PAN membrane adsorption material and a preparation method thereof, belonging to the technical fields of chemistry and environment. Background technique

[0002] Hexavalent uranium is the main raw material for manufacturing nuclear weapons and nuclear power fuels. It is often used as fuel for nuclear power reactors and is a very important energy source. But hexavalent uranium has certain radioactivity and chemical toxicity. According to statistics, there are about 4.5 billion tons of uranium in seawater, and these uraniums can theoretically generate nuclear energy for the whole world for thousands of years. A large amount of hexavalent uranium entering water not only causes hexavalent uranium pollution, but also causes serious waste of resources. However, the concentration of uranium in seawater is very low, and the salinity of seawater is high, so it is extremely challenging to enrich uraniu...

Claims

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