24-12-2020 дата публикации
Номер: US20200398252A1
Принадлежит:
A variety of compositions and materials are provided for water purification and remediation. The compositions including multiple functionalities for treating a variety of pollutants or contaminants. The compositions can include a porous organic polymer with one or more of a variety of functional groups for binding the contaminants and with a hierarchical pore size distribution over a range of pore sizes to facilitate enhanced removal of the contaminants. Functional groups can include one, two, or more different functional groups such as amines, halides, ammoniums, pyridiuiums, thiols, imidazoliums, salts thereof, or others. The range of pore sizes can be about 1 nm to 10 nm or more. Contaminants can include antimony, arsenic, barium, beryllium, cadmium, chromium, copper, lead, mercury, selenium, technetium, thallium, uranium, radium, urea, and phosphate. Methods of removing the contaminants from water using the compositions are also provided. 2. The composition according to claim 1 , wherein each occurrence of Ris —NH claim 1 , —NHR claim 1 , or —NRR.3. The composition according to claim 1 , wherein each occurrence of Ais none.5. The composition according to claim 4 , wherein each occurrence of Ris —NH claim 4 , —NHR claim 4 , or —NRR.6. The composition according to claim 4 , wherein at least one occurrence of Ris —NH claim 4 , —NHR claim 4 , or —NRR.7. The composition according to claim 4 , wherein each occurrence of Ais none.9. The composition according to claim 8 , wherein the binding moiety comprises a halide selected from the group consisting of a chloride claim 8 , a bromide claim 8 , and an iodide.10. The composition according to claim 8 , wherein the binding moiety comprises a conjugate base substituent or a salt thereof claim 8 , wherein the conjugate base is selected from the group consisting of sulfate and nitrate.12. The composition according to claim 8 , wherein the binding moiety comprises a thiol substituent having a structure according to the ...
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