A method for preparing an antibiotic selective adsorbent

By preparing a molecularly imprinted composite material of C-BN nanosheets containing Fe3O4 and coated with SiO2, the problems of poor selectivity and desorption difficulties of existing adsorption materials were solved, and a highly efficient and recyclable tetracycline adsorption effect was achieved.

CN118022691BActive Publication Date: 2026-06-23XIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN UNIV OF TECH
Filing Date
2024-01-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing adsorbent materials have poor selectivity for tetracycline antibiotics, low adsorption capacity, and are difficult to completely desorb, resulting in insufficient cycle performance.

Method used

Selective adsorbents for antibiotics were prepared by confining Fe3O4 onto C-BN nanosheets and coating them with SiO2, and then combining this with molecular imprinting technology. By controlling the type and ratio of catalysts and adjusting the ratio of functional monomers and template molecules, selective adsorption sites and rapid desorption mechanisms were formed.

Benefits of technology

A tetracycline antibiotic adsorbent with high adsorption capacity, good selectivity and rapid desorption has been developed, which enhances adsorption efficiency and increases the number of recycling cycles, and is suitable for wastewater treatment and food antibiotic detection.

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Abstract

The application discloses a preparation method of an antibiotic selective adsorbent, first, C-BN nanosheet balls are prepared by a simple catalytic thermal evaporation method; second, the C-BN nanosheet balls are used as a main body to limit and load magnetic Fe3O4 nanoparticles; and then mesoporous SiO2 and imprinted polymers are coated on the surface of the C-BN nanosheet balls in sequence, and the tetracycline antibiotic selective adsorbent is obtained after template molecules are eluted. The tetracycline antibiotic selective composite adsorbent with high adsorption capacity is prepared, the high specific surface area of the carrier material and the enrichment antibiotic capacity of the radial structure and the selectivity of the surface molecular imprinting material are fully utilized, the selective adsorption of specific antibiotics in a complex solution is effectively realized, and the adsorption efficiency is effectively improved. The carbon-doped BN and the limited loading magnetic particles enhance the adsorption capacity, and the adsorbent can be quickly recovered and separated under an external magnetic field. Meanwhile, the SiO2 layer and the imprinted polymers enable the antibiotics to be quickly desorbed, and the cycle number is more, so that the antibiotic selective adsorbent has application prospects in the fields of sewage treatment and food antibiotic detection.
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