Preparation method and application of microwave-assisted magnetic hollow Zn/Co zeolite imidazole nanocage material

A zeolite imidazole and microwave-assisted technology, which is applied in the field of environmental functional materials and water treatment, to achieve the effect of porous crystal form, simple process and low cost

Active Publication Date: 2019-09-17
NINGXIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, microwave-assisted, fast and simple manipulations have been used to prepare Fe with embedded magnetic 3 o 4 The study of the hollow ZIF cage material has not been reported, and the study of its strong and renewable cage material for the rapid adsorption and removal of organic pollutants has not been reported.

Method used

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  • Preparation method and application of microwave-assisted magnetic hollow Zn/Co zeolite imidazole nanocage material
  • Preparation method and application of microwave-assisted magnetic hollow Zn/Co zeolite imidazole nanocage material
  • Preparation method and application of microwave-assisted magnetic hollow Zn/Co zeolite imidazole nanocage material

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Embodiment 1

[0077] The preparation method of the microwave-assisted magnetic hollow Zn / Co zeolite imidazole nanocage material of the present embodiment comprises the following steps:

[0078](1) According to the amount of ferric chloride hexahydrate: anhydrous sodium acetate: polyethylene glycol: ethylene glycol = 0.6g: 1.8g: 0.49g: 25mL, ferric chloride hexahydrate, anhydrous sodium acetate, poly Dissolve ethylene glycol in ethylene glycol, stir magnetically at room temperature for 0.5h, then transfer to an autoclave, and conduct a hydrothermal synthesis reaction at a temperature of 160°C for 8h, filter the obtained reaction product, and wash it with ethanol for 2 to 3 times. Then wash with deionized water for 2 to 3 times, and vacuum dry to obtain nano-Fe 3 o 4 ; Take by weighing the nano-Fe that 0.015g makes 3 o 4 Add 9 mL of methanol to ultrasonically disperse for 15 min to obtain A suspension;

[0079] (2) 0.22g cobalt nitrate hexahydrate was dissolved in 5.5mL methanol to obtain...

Embodiment 2

[0094] The preparation method of the microwave-assisted magnetic hollow Zn / Co zeolite imidazole nanocage material of this embodiment comprises the following steps:

[0095] (1) According to the amount of ferric chloride hexahydrate: anhydrous sodium acetate: polyethylene glycol: ethylene glycol = 1.0g: 2.94g: 0.82g: 33mL, ferric chloride hexahydrate, anhydrous sodium acetate, poly Dissolve ethylene glycol in ethylene glycol, stir magnetically at room temperature for 0.5h, then transfer to an autoclave, and conduct a hydrothermal synthesis reaction at a temperature of 175°C for 16h, filter the obtained reaction product, and wash with ethanol for 2 to 3 times. Then wash with deionized water for 2 to 3 times, and vacuum dry to obtain nano-Fe 3 o 4 ; Take by weighing the nano-Fe that 0.04g makes 3 o 4 Add 15mL of methanol and ultrasonically disperse for 15min to obtain A suspension;

[0096] (2) 0.749g cobalt nitrate hexahydrate is dissolved in 11.5mL methanol to obtain soluti...

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Abstract

The invention discloses a preparation method of a microwave-assisted magnetic hollow Zn/Co zeolite imidazole nanocage material. The preparation method comprises the steps: adopting Nano Fe3O4 as a seed crystal, adding cobalt nitrate hexahydrate and 2-methylimidazole and zinc nitrate hexahydrate successively, performing rapid self-assembly based on seed crystal induction so as to form a double-shell Zn/Co-ZIF crystal and form a magnetic double-shell nano crystal Fe3O4@ZIF-67@ZIF-8, utilizing methanol to absorb the microwave energy under the assistance action of microwaves, and transferring energy quickly to an inner shell ZIF-67 with poor chemical stability so as to bring vibration and cracking of metal organic skeleton ZIF-67 bonds, achieve etching of the inner shell and obtain Fe3O4@Zn/Co-ZIF. The material has a hollow cage-shaped morphology, a large specific surface area, a complete crystal form, multiple pores, high chemical stability and good magnetic properties for convenient magnetic separation. The material has an efficient and high-throughput adsorption for antibiotic quinolone drugs, has another advantage of easy separation from the antibiotic quinolone drugs, can be regenerated and reused at least 8 times, has excellent reproducibility, and has easy realization of high-efficiency removal of high-residue quinolone antibiotics in a large-scale water environment.

Description

[0001] Technical field: [0002] The invention relates to the technical fields of environmental functional materials and water treatment, in particular to a preparation method and application of a microwave-assisted magnetic hollow Zn / Co zeolite imidazole nanocage material. [0003] Background technique: [0004] Quinolones are a new class of synthetic antibacterial drugs. Because quinolones have the advantages of broad antibacterial spectrum, strong antibacterial activity, convenient administration, and low price, their clinical application is rapidly popularized. Development, production and application of key antibiotic drugs. Due to the abuse of antibiotics in human medical and livestock and poultry breeding industries, a large number of residual antibiotics enter the environment directly or indirectly. [0005] The main sources of antibiotic residues in the environment are as follows: (1) Pharmaceutical wastewater: Pharmaceutical wastewater is one of the most difficult ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01J20/34C02F1/28C02F101/34C02F101/36C02F101/38
CPCB01J20/06B01J20/226B01J20/28014B01J20/28009B01J20/30B01J20/3475C02F1/288C02F2101/34C02F2101/36C02F2101/38Y02W10/37
Inventor 孟哲王泽岚赵孟欣刘万毅
Owner NINGXIA UNIVERSITY
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