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US 2024/0190802 A1Published application
Direct and scalable synthesis of solution processable metal-organic framework nanosheets with variable functionalities
AssigneeNational University of Singapore
InventorsDan Zhao, Hongye Yuan
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Abstract
Disclosed herein are metal organic framework (MOF) suspensions, and sols and compositions comprising MOF nanosheets. Also disclosed herein are their methods of preparation.
Claims31
A method of forming a metal-organic framework (MOF) suspension, the process comprising:
- (a) providing a metal precursor, an organic ligand, a capping molecule and a solvent comprising a polar aprotic solvent and water;
- (b) adding the metal precursor, organic ligand and capping molecule to the solvent to provide a reaction mixture and heating it for a period of time to form the MOF suspension, wherein:
- the metal precursor has a concentration in the solvent of from 1.0 to 2 mg/mL;
- the organic ligand has a concentration in the solvent of from 1.0 to 2 mg/mL;
- the capping molecule is provided in an amount of from 5 to 20 vol % relative to the total volume of the solvent, and/or it is provided in an amount of from 5 to 20 wt % relative to the total weight of the solvent;
- and
- water represents from 5 to 20 vol % of the solvent, with the balance being the polar aprotic organic solvent.
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A suspension of a metal organic framework comprising:
- one or both of water and tetrahydrofuran (THF);
- and
- MOF nanosheets having an area of greater than or equal to 10,000 μm2.
A sol comprising:
- a solvent;
- and
- MOF nanosheets having an area of greater than or equal to 10,000 μm2.
A composition comprising MOF nanosheets having an area of greater than or equal to 10,000 μm2.
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Dependencies are inferred from the claim text.