APPLICATION OF CARBOXYLATED COVALENT ORGANIC MAGNETIC FRAMEWORK MATERIAL AS MAGNETIC SOLID-PHASE EXTRACTION ADSORBENT

WIPO Patent Application WO/2023/078376

A1

Disclosed is an application of a carboxylated covalent organic magnetic framework material as a magnetic solid-phase extraction adsorbent. The preparation method for the material comprises the following steps: (1) firstly, taking dopamine hydrochloride as a coordinating stabilizer, and synthesizing surface-aminated magnetic iron oxide particles by coprecipitating iron (III) chloride and iron (II) chloride; and (2) then activating the surface-aminated magnetic iron oxide particles, and performing covalent cross-linking on the surfaces of the aminated magnetic iron oxide particles by taking 1,3,5-triformylphloroglucinol (Tp) and 4,4'- diaminobiphenyl-2,2'-dicarboxylic acid as construction units, acting under the reversible catalytic action of acetic acid and using a solvothermal synthesis method, so as to prepare the carboxylated covalent organic magnetic framework material. The carboxylated covalent organic framework material prepared has a large specific surface area, a good mesoporous structure, a stable structure, large adsorption capacity, a short balance time and multiple adsorption forces, thereby significantly simplifying the sample pretreatment steps and shortening the sample processing time.

LI XIAOXI (CN)
WANG TIANXING (CN)
LIU WEI (CN)
CHEN LING (CN)
LI BING (CN)

PCT/CN2022/129761

May 11, 2023

November 04, 2022

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UNIV SOUTH CHINA TECH (CN)
SCUT ZHONGSHAN INSTITUTE OF MODERN INDUSTRIAL TECH (CN)

B01J20/22; B01D15/08; B01J20/28; B01J20/30

CN114130374A	2022-03-04
CN110938282A	2020-03-31
CN105879842A	2016-08-24
US20200398222A1	2020-12-24

HUAXUE IP AGENCY CO., LTD. (CN)

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