Method for preparing crown ether-based covalent organic frameworks and application in iodine adsorption thereof
AssigneeChongqing University of Arts and Sciences
InventorsYuanzhe TANG, Qiangbin YANG, Yujuan JING, Zhonghao XU, Guangyong ZENG
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Abstract
A method for preparing a crown ether-based covalent organic frameworks and its application in iodine adsorption are provided. According to the present disclosure, an 18-crown-6 ether group is introduced into the structure of the covalent organic framework (COF) material for iodine adsorption. The covalent organic frameworks form a one-dimensional pore channel structure in an orderly manner, and at the same time, the 18-crown-6 ether may selectively complex iodine molecules.
Claims8
A novel covalent organic framework (COF)-DB18C6 having an 18-crown-6 ether group, wherein the novel covalent organic framework having the 18-crown-6 ether group is prepared by a method comprising:
- placing 2,5-dimethylpyrazine, 4,4′,4″,4″-(6,7,9,10,17,18,20,21-octahydrodibenzo[B,K][1,4,7,10,13,16]hexaoxacyclooctadecine-2,3,13,14-tetrayl)tetrabenzaldehyde (DB18C6), sodium hydroxide, trimethylbenzene, and methanol into a 100 milliliters (mL) reaction vessel, ultrasonically treating for a period until dissolution, subsequently heating a reaction system in an oven for a period;
- after a reaction is completed, performing cooling and centrifugation;
- washing a plurality of times with N,N-dimethylformamide (DMF), tetrahydrofuran (THF), water, and ethanol, and drying under vacuum at 100 degrees Celsius (° C.) to obtain a pale yellow COF-DB18C6.
Dependencies are inferred from the claim text.