US 12,263,465 B2
Tailoring new covalent organic framework for highly efficient iodine capture
Shaikha Alneyadi, Al Ain (AE); Mohammed Taleb Khamis Alhassani, Al Ain (AE); Ali Saeed Saif Aleissaee, Al Ain (AE); Abdullah Ayman Khalaf, Al Ain (AE); Abdulrahman Abdullah Alhaj Alteneiji, Al Ain (AE); Sultan Ali Jama, Al Ain (AE); and Yaser Yushi Yaser Alyaarbi, Al Ain (AE)
Assigned to UNITED ARAB EMIRATES UNIVERSITY, Al Ain (AE)
Filed by UNITED ARAB EMIRATES UNIVERSITY, Al Ain (AE)
Filed on Jul. 28, 2023, as Appl. No. 18/227,807.
Prior Publication US 2025/0033025 A1, Jan. 30, 2025
Int. Cl. B01J 20/22 (2006.01); B01D 15/20 (2006.01); B01D 53/68 (2006.01); B01D 53/96 (2006.01); B01J 20/30 (2006.01); B01J 20/34 (2006.01); C07F 9/659 (2006.01); G21F 9/02 (2006.01); G21F 9/12 (2006.01)
CPC B01J 20/226 (2013.01) [B01D 15/203 (2013.01); B01D 53/685 (2013.01); B01D 53/96 (2013.01); B01J 20/3078 (2013.01); B01J 20/3085 (2013.01); B01J 20/3425 (2013.01); B01J 20/3475 (2013.01); C07F 9/659 (2013.01); G21F 9/02 (2013.01); G21F 9/12 (2013.01); B01D 2253/204 (2013.01); B01D 2257/202 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for making a phosphazene covalent organic framework (MA-COF) comprising:
obtaining a hexa(4-formyl-phenoxy)cyclotriphosphazene having the formula:

OG Complex Work Unit Chemistry
obtaining a 1,3,6,8-tetra(aminophenyl)pyrene having the formula:

OG Complex Work Unit Chemistry
placing the hexa(4-formyl-phenoxy)cyclotriphosphazene and the 1,3,6,8-tetra(aminophenyl)pyrene in separate vessels, then adding a solvent to each respective vessel and sonicating each respective vessel to obtain a hexa(4-formyl-phenoxy)cyclotriphosphazene homogenous dispersion and a 1,3,6,8-tetra(aminophenyl)pyrene homogenous dispersion;
adding the hexa(4-formyl-phenoxy)cyclotriphosphazene homogenous dispersion to the vessel containing the 1,3,6,8-tetra(aminophenyl)pyrene homogenous dispersion to obtain a suspension;
adding acetic acid to the suspension and leaving the resulting mixture in an autoclave undisturbed for at least about 7 days at a temperature of about 110° C. to about 130° C. to obtain a solid;
collecting the solid by filtration and drying the solid to obtain the phosphazene covalent organic framework (MA-COF) having the formula:

OG Complex Work Unit Chemistry