Preparation method and application of microwave-assisted magnetic hollow zn/co zeolite imidazole nanocage materials

Abstract

The preparation method of microwave-assisted magnetic hollow Zn / Co zeolite imidazole nano-cage material of the present invention uses nano-Fe 3 o 4 As seeds, cobalt nitrate hexahydrate, 2-methylimidazole and zinc nitrate hexahydrate were added successively. Based on the induction of seed crystals, double-shell Zn / Co-ZIF crystals were rapidly self-assembled to generate magnetic double-shell nanocrystals Fe 3 o 4 @ZIF‑67@ZIF‑8, with the assistance of microwaves, methanol absorbs microwave energy and quickly transfers the energy to the inner shell ZIF‑67 with poor chemical stability, causing vibration and cracking of metal organic framework ZIF‑67 bonds, The inner shell is etched to produce Fe 3 o 4 @Zn / Co‑ZIF. The material has a hollow cage shape, large specific surface area, complete and porous crystal form, high chemical stability and good magnetic properties to facilitate magnetic separation. The material exhibits efficient, high-throughput adsorption of antibiotic quinolones. Moreover, it is easy to separate from antibiotic quinolones, can be regenerated and reused, has excellent reproducibility, and is easy to achieve efficient removal of high-residue quinolone antibiotics in large-scale water environments.

Description

Preparation method and preparation method of microwave-assisted magnetic hollow Zn / Co zeolite imidazole nanocage material application Technical field: The present invention relates to environmental functional material and water treatment technical field, specifically, relate to a kind of microwave-assisted magnetic Preparation method and application of hollow Zn / Co zeolite imidazole nano-cage material. Background technique: Quinolone is a kind of relatively new synthetic antibacterial drug, because quinolones have broad antibacterial spectrum, strong antibacterial activity, The advantages of convenient administration and low price have made its clinical application rapidly popularized, and it has become the most competitive drug in the world today. Key antibiotic drugs for development, production and application. Due to the abuse of antibiotics in human medical care and livestock and poultry breeding industries, there are a large number of Residual antibiotics ent...

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.

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