Preparation method and use of lanthanum coordinated diamino-functionalized mesoporous silica film

A silicon dioxide membrane and diamino technology, which is used in the preparation of lanthanum-coordinated diamino functionalized mesoporous silica membranes and the field of adsorption and separation of phosphate ions in water, can solve the problems of cumbersome preparation process, poor selectivity, mechanical Poor performance and other problems, to achieve the effect of simple preparation process, low manufacturing cost and high crystallinity
CN109200990AInactive Publication Date: 2019-01-15JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU UNIV
Publication Date
2019-01-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of material preparation technology and separation technology, and relates to a preparation method and use of a lanthanum-coordinated diamino functionalized mesoporous silica film in phosphorus adsorption in a water body. The lanthanum-coordinated diamino-functionalized mesoporous silica film is prepared by first preparing a CNCs / silicon film from cellulose nanocrystals (CNCs) as a template and tetramethoxysilane (TMOS) as a silicon source by solvent evaporation self-assembly method and then removing CNCs by calcinations. The amino-functionalized mesoporous silica film is prepared by a post-synthesis grafting method and finally a lanthanum coordination method. The adsorption of phosphoric acid in the water body is carried out by an oscillating method, andthe lanthanum-coordinated diamino functionalized mesoporous silica film has excellent adsorption properties. The lanthanum-coordinated diamino functionalized mesoporous silica film has the advantagesthat the lanthanum-coordinated diamino functionalized mesoporous silica film is obtained by a simple preparation method, and has large adsorption capacity, and the membrane material can be recovered without causing secondary pollution.
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Description

technical field

[0001] The invention belongs to the technical field of material preparation and separation, and relates to a preparation method of a lanthanum-coordinated diamino-functionalized mesoporous silicon dioxide film and its application to the adsorption and separation of phosphate ions in water bodies. Background technique

[0002] Today, human activities frequently cause water eutrophication. For biological cells, phosphorus is an important component of molecules in cells, and constitutes the skeleton of phospholipids, nucleotides, nucleic acids, and coenzymes, so the decisive factor causing eutrophication is also the content of phosphorus in water bodies. Due to the rapid development of industry and agriculture, if the industrial wastewater is discharged into lakes, estuaries, bays and other slow-flowing water bodies without treatment, the phosphorus element required by organisms will cause algae and plankton to multiply rapidly. The growth cycle of algae and pl...

Claims

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