A kind of preparation method and application of janus double-layer ion imprinted composite membrane
An ion imprinting and composite membrane technology, applied in the field of Janus double-layer ion imprinting composite membrane, can solve the problems of limited selectivity and high synthesis cost of special adsorbents, and achieve the effect of good ion adsorption performance.
Inactive Publication Date: 2019-10-01
JIANGSU UNIV
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Problems solved by technology
Although there are various kinds of adsorbents, such as carbon adsorbents, which are cheap and easy to operate, their selectivity is limited, and the synthesis cost of special adsorbents is relatively high.
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The invention provides a preparation method and application of a Jannus dual-layered ionic imprinting composite film. The preparation method comprises the following steps: step 1, preparing nano crystal cellulose (NCC) turbid liquid; step 2, synthesizing GLYMO-IDA silane; step 3, synthesizing CPTES-ACAC silane; step 4, synthesizing a dual-layered ionic composite film; and step 5, synthesizing theJannus dual-layered ionic imprinting composite film. By means of the characteristics that the nano crystal cellulose which is wide in source is taken as a matrix functional self-assembled film, and athermosensitive monomer is grafted to achieve double preferential adsorption, the problem of adsorbing target ions preferentially can be solved well by introducing an ionic imprinting technology.
Description
technical field The invention relates to a Janus double-layer ion-imprinted composite membrane, in particular to a method combining biomass template-nanocrystalline cellulose and ion-imprinted technology to prepare rare earth Nd 3+ and Dy 3+ The ion imprinted double-layer composite membrane belongs to the field of material preparation technology and separation technology. Background technique Rare earth permanent magnet materials refer to permanent magnet materials made of alloys formed by transition metals and rare earth metals through a certain process, among which neodymium iron boron (NdFeB) permanent magnets are the most common, and its main component is the rare earth element neodymium (Nd) , iron (Fe), boron (B). Among them, the rare earth element is mainly neodymium (Nd), which can be partially replaced by other rare earth metals such as dysprosium (Dy) and praseodymium (Pr) in order to obtain different properties. The magnetic energy product of NdFeB magnet is be...
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IPC IPC(8): B01J20/26B01J20/28B01J20/30B01D15/38
Inventor 郑旭东张福生刘恩秀刘恩利喻龙宝闫永胜
Owner JIANGSU UNIV