Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 49, Pages 46219-46225Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b17324
Keywords
thiol-ene click strategy; covalent organic framework; phenylboronic acid; catechol removal; aqueous medium
Funding
- National Natural Science Foundation of China [21775056, 21777074]
- National First-class Discipline Program of Food Science and Technology [JUFSTR20180301]
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We report a thiol-ene click strategy for the preparation of a novel phenylboronic acid-functionalized covalent organic framework (COF) for selective removal of catechol in aqueous solution. Vinyl-functionalized 2,5-diallyloxyterephthalaldehyde (Da-V) was prepared as a building ligand. Da-V was then condensed with 1,3,5-tris(4-aminophenyl)benzene (Tab) to give a vinyl-functionalized COF DhaTab-V. Subsequently, 4-mercaptophenylboronic acid (4-MPBA) was covalently linked on DhaTab-V via thiol-ene click reaction to give phenylboronic acid-functionalized COF DhaTab-PBA. The adsorption isotherms, energetics and kinetics, and reusability of DhaTab-PBA for the adsorption and removal of catechol from aqueous solution were investigated in detail. This phenylboronic acid-functionalized COF is promising as sorbent for selective removal of catechol from aqueous medium with large adsorption capacity and good reusability.
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