Synthesis, product, and application of a magnetic covalent organic framework denoted as mTFBD-PPD

• Main Authors: XIE, Wancui, LI, Hongyan, SONG, Lin, YANG, Xihong, CHE, Hongxia, DONG, Xiufang, GUO, Hao, DONG, Zequn
• Format: Patent
• Language: English
• Published: 21.10.2021
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses a preparation method, product, and application of a magnetic covalent organic framework denoted as mTFBD-PPD, which belongs to the technical field of preparation of toxin adsorbents. The synthetic method was as follows: Briefly, 3,3',5,5' tetraformyl-4,4'-biphenyldiol and alkali were dissolved in ultrapure water, p-phenylenediamine and magnetic nanoparticles were dispersed in an organic solvent. mTFBD-PPD was obtained by mixing the two solutions. The novel adsorbent mTFBD-PPD was prepared by combining the covalent organic framework material and magnetic nanoparticles, which had a large specific surface area, good thermal stability, strong selectivity. mTFBD-PPD could be quickly separated and reused. It could be used in the adsorption of diarrheal shellfish toxins, which effectively increased the adsorption rate.