Preparation method and use of phosphate anion surface imprinted polymer

A technology of surface imprinting and anion, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of incomplete elution of template ions, slow mass transfer, low adsorption capacity, etc., and achieve good adsorption stability and good selectivity and regeneration performance, the effect of superior adsorption performance

Active Publication Date: 2016-09-28
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the imprinted polymer has some disadvantages, such as incomplete elution of template ions, low adsorption capacity and slow mass transfer, etc.

Method used

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  • Preparation method and use of phosphate anion surface imprinted polymer
  • Preparation method and use of phosphate anion surface imprinted polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Preparation of La(III)-modified graphene oxide (GO-La)

[0029] Take a 250mL beaker, ultrasonically dissolve 50mg GO in 100mL water, add 10mL La(III) solution (containing 12.25mg LaCl 3 ·6H 2O), continued stirring reaction 12h. Centrifuge, wash with a large amount of water for several times, and dry in a vacuum oven at 40°C for 24 hours to obtain GO-La.

[0030] (2) Vinylation modification of La(III)-modified graphene oxide (GO-La-MPS)

[0031] Take a round bottom flask, add 200mg GO-La, 5mL MPS and 50mL ethanol respectively, and sonicate for 20 minutes. The mixture was placed in a 50 °C oil bath while magnetically stirring (500 rpm) for 12 h. After cooling to room temperature, it was centrifuged and washed three times with ethanol, and the obtained GO-La-MPS was vacuum-dried at 40 °C for 24 h.

[0032] (3) Preparation of phosphate anion imprinted polymer (GO-La-IIP)

[0033] Take a round bottom flask, add 30mL ethanol and 10mL ultra-light water (DDW), stir ma...

Embodiment 2

[0041] (1) Preparation of La(III)-modified graphene oxide (GO-La)

[0042] Take a 250mL beaker, ultrasonically dissolve 100mg GO in 100mL water, add 10mL La(III) solution (containing 24.5mg LaCl 3 ·6H 2 O), continued to stir for 12h. Centrifuge, wash with a large amount of deionized water, place in a vacuum oven at 40°C, and dry for 24 hours to obtain GO-La.

[0043] (2) Vinylation modification of La(III)-modified graphene oxide (GO-La-MPS)

[0044] Take a round bottom flask, add 200mg GO-La, 10mL MPS and 50mL ethanol respectively, and sonicate for 20 minutes. The mixture was placed in a 50 °C oil bath, magnetically stirred (500 rpm) for 12 h. After cooling to room temperature, it was centrifuged and washed three times with ethanol, and the obtained GO-La-MPS was vacuum-dried at 40 °C for 24 h.

[0045] (3) Preparation of phosphate anion imprinted polymer (GO-La-IIP)

[0046] Take a round bottom flask, add 35mL ethanol and 10mL ultra-light water (DDW), stir magnetically ...

Embodiment 3

[0052] (1) Preparation of La(III)-modified graphene oxide (GO-La)

[0053] Take a 250mL beaker, ultrasonically dissolve 200mg GO in 100mL water, add 10mL La(III) solution (containing 49mg LaCl 3 ·6H 2 O), continued stirring reaction 12h. Centrifuge, wash with a large amount of water for several times, and dry in a vacuum oven at 40°C for 24 hours to obtain GO-La.

[0054] (2) Vinylation modification of La(III)-modified graphene oxide (GO-La-MPS)

[0055] Take a round bottom flask, add 200mg GO-La, 20mL MPS and 50mL ethanol respectively, and sonicate for 20 minutes. The mixture was placed in a 50 °C oil bath while magnetically stirring (500 rpm) for 12 h. After cooling to room temperature, it was centrifuged, washed three times with ethanol, and the obtained GO-La-MPS was vacuum-dried at 40 °C for 24 h.

[0056] (3) Preparation of phosphate anion imprinted polymer (GO-La-IIP)

[0057]Take a round bottom flask, add 40mL ethanol and 10mL ultra-light water (DDW), stir magnet...

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Abstract

The invention provides a preparation method and a use of a phosphate anion surface imprinted polymer. The preparation method comprises the following steps: 1, preparing La (III) modified graphene oxide (GO-La); 2, preparing a vinylation modification material of La (III) modified graphene; and 3, preparing the phosphate anion surface imprinted polymer (GO-La-IIP). The phosphate anion surface imprinted polymer (GO-La-IIP) adopting the La (III) modified graphene oxide (GO) has superior adsorption performance. The polymer based on the electrostatic action force between lanthanum and phosphate anions has good adsorption stability. The GO-La-IIP has good selectivity and regeneration effect on the phosphate anions. The polymer provides a new technical way for selective separation and enrichment of the phosphate anions in an environment sample.

Description

technical field [0001] The invention belongs to the technical field of preparation of environmental functional materials, in particular to a preparation method and application of a phosphate anion surface imprinted polymer. Background technique [0002] As one of the limiting nutrient elements in the water body, phosphate radicals, its excessive presence in the water body can easily cause the rapid reproduction of algae and other plankton in the water body, resulting in a decrease in dissolved oxygen in the water body, deterioration of water quality, and fish and other aquatic organisms. Death and other chain reactions. Therefore, how to remove phosphate radicals in eutrophic water bodies has always been the focus of attention and research hotspot. At present, in order to remove excess phosphate in water, many methods including biological phosphorus removal technology and physical and chemical phosphorus removal technology have been applied to the treatment of polluted wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/06C08F222/14B01J20/26B01J20/30
CPCB01J20/268C08F292/00C08F220/06
Inventor 刘燕吴维富丁丽君钟国星
Owner JIANGSU UNIV
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