The invention discloses preparation of a
covalent organic framework material and an application thereof in
metal ion recognition and
dye adsorption. The preparation method comprises the following steps: adding 2,4,6-tri-(4-bromo-phenyl)-[1,3,5]-triazinide and
pyrene-2,7-bis(4,4,5,5-tetramethyl-[1,3,2]dioxaboropentane) into an
organic solvent, carrying out ultrasonic treatment, and carrying out cyclic degassing; and adding a
palladium catalyst and an alkaline solution, adding the raw materials into a Schleck tube, vacuumizing the tube and introducing
nitrogen, performing circular degassing forthree times, purging the tube with
argon, sealing the tube, performing stirring reaction, carrying out suction
filtration, washing the product, and carrying out
vacuum drying to obtain the
covalent organic framework material. The synthesis method is simple to operate and high in yield; the synthesized
covalent organic framework material is high in sensitivity and good in selectivity and has good application performance.
Metal ions can be quickly and sensitively recognized, a good
adsorption effect on the
neutral red dye is achieved, and a large amount of the
neutral red dye can be adsorbed inan
aqueous solution within a short time.