Preparation method of hollow porous microsphere adsorbent

A technology of porous microspheres and adsorbents, which is applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc. Effects of adsorption and separation performance

Active Publication Date: 2018-05-15
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the small physical size of ZIFs nanoparticles, it is difficult to recover in the actual use in solution, and there are few reports on the use of ZIFs nanoparticles as stable particles of Pickering emulsions.

Method used

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  • Preparation method of hollow porous microsphere adsorbent
  • Preparation method of hollow porous microsphere adsorbent
  • Preparation method of hollow porous microsphere adsorbent

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A method for preparing a hollow porous adsorbent, characterized in that it proceeds in accordance with the following steps:

[0021] The Pickering emulsion polymerization that ZIF-8 nano particle stabilizes prepares the method for hollow porous microsphere adsorbent, carries out according to the following steps:

[0022] (1) Preparation of ZIF-8 nanoparticles

[0023] First, take 0.59g of Zn(NO 3 ) 2 ·6H 2 O was added to 40ml of distilled water, and the stirring was continued until the solution became clear to obtain solution A. According to the taken Zn(NO 3 ) 2 ·6H 2 The amount of O is Zn(NO 3 ) 2 ·6H 2 O: 2-methylimidazole with a mass ratio of 1:70 Take the corresponding 2-methylimidazole and add it to distilled water, and then keep stirring until all 2-methylimidazole is dissolved in distilled water to obtain solution B. The obtained solutions A and B were mixed, stirred at 1000rpm at room temperature for 1h, and finally the obtained solution was centrifug...

Embodiment 2

[0027] A method for preparing a hollow porous adsorbent, characterized in that it proceeds in accordance with the following steps:

[0028] The Pickering emulsion polymerization that ZIF-8 nano particle stabilizes prepares the method for hollow porous microsphere adsorbent, carries out according to the following steps:

[0029] (1) Preparation of ZIF-8 nanoparticles

[0030] First, take 0.65g of Zn(NO 3 ) 2 ·6H 2 O was added to 40ml of distilled water, and the stirring was continued until the solution became clear to obtain solution A. According to the taken Zn(NO 3 ) 2 ·6H 2 The amount of O is Zn(NO 3 ) 2 ·6H 2 The mass ratio of O: 2-methylimidazole is 1:65. Take the corresponding 2-methylimidazole and add it into distilled water, and then keep stirring until all 2-methylimidazole is dissolved in distilled water to obtain solution B. The obtained solutions A and B were mixed, stirred at 2000rpm at room temperature for 2h, and finally the obtained solution was centri...

Embodiment 3

[0034] A method for preparing a hollow porous adsorbent, characterized in that it proceeds in accordance with the following steps:

[0035] The Pickering emulsion polymerization that ZIF-8 nano particle stabilizes prepares the method for hollow porous microsphere adsorbent, carries out according to the following steps:

[0036] (1) Preparation of ZIF-8 nanoparticles

[0037] First, take 0.70g of Zn(NO 3 ) 2 ·6H 2 O was added to 40ml of distilled water, and the stirring was continued until the solution became clear to obtain solution A. According to the taken Zn(NO 3 ) 2 ·6H 2 The amount of O is Zn(NO 3 ) 2 ·6H 2 The mass ratio of O: 2-methylimidazole is 1:75. Take the corresponding 2-methylimidazole and add it into distilled water, and then keep stirring until all 2-methylimidazole is dissolved in distilled water to obtain solution B. The obtained solutions A and B were mixed, stirred at 3000rpm at room temperature for 3h, and finally the obtained solution was centri...

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Abstract

The invention discloses a preparation method of a hollow porous microsphere adsorbent and belongs to the technical field of environment-friendly functional material preparation. ZIF-8 nanoparticles are used as stable particles of a Pickering emulsion and are dispersed into a solution so as to be used as a water phase. Dodecane is used as an oil-phase solvent, and crosslinking agents azodiisobutyronitrile, styrene and vinyl benzene are mixed to be used as an oil phase. The water phase and the oil phase are mixed to form a stable Pickering emulsion. The hollow porous microsphere adsorbent is prepared by carrying out a thermal initiation reaction and is applied to the adsorption and separation of amoxicillin in a water solution. The product has large specific surface area and good stability and is beneficial to the adsorption of target molecules, porous ZIF-8 attached to the outer parts of the hollow microspheres provides a great number adsorption sites for the material, and the ZIF-8 nanoparticles stably attached to the hollow microspheres are more conveniently recycled as comparison with ZIF-8 particles in discrete distribution.

Description

technical field [0001] The invention relates to a method for preparing a hollow porous microsphere adsorbent by using Pickering emulsion polymerization stabilized by zeolite-like imidazolate framework material ZIF-8 nanometer particles, and belongs to the technical field of preparation of environmental protection functional materials. Background technique [0002] In recent years, antibiotics have been widely used in the treatment of human and animal diseases. At the same time, subtherapeutic doses have been added to animal feed for a long time to prevent diseases and promote animal growth, which has played an important role in ensuring human health and promoting the development of animal husbandry. However, some studies have shown that more than 85% of antibiotics enter the ecological environment in the form of original drugs and metabolites, and after a series of transformations, most of them will eventually exist in natural water bodies. Harmful, induced and spread of var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28C02F1/28B01J20/30
CPCB01J20/226B01J20/261B01J20/28021B01J2220/44C02F1/288
Inventor 欧红香余沛霖程萍张嘉陆郑旭东邢志祥
Owner CHANGZHOU UNIV
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