A monolayer membrane containing gelling polymer particles having at least one of a basic functional group and an acidic functional group, and having a thickness of less than 5 ?m. A composite having a porous carrier and gelling polymer particles having at least any one of a basic functional group and an acidic functional group and filling up the surface pores of the porous carrier. The invention can provide a novel material capable of efficiently separating an acid gas from a mixed gas.

A method for making a substrate for a graphene membrane comprises: a. providing a sheet of a porous polymer; b. treating the sheet of the porous polymer with an acid to impart a negative charge to the sheet of the porous polymer, to yield a charged surface; and c. treating the charged surface with at least one metal ion.

Methods for manufacturing an isotopic filtration module and methods for filtering water according to its isotopic forms. In some implementations, graphene oxide flakes may be dispersed in an aqueous medium to form a graphene oxide solution. The graphene oxide solution may be applied to a substrate to form a laminated graphene oxide membrane comprising a plurality of graphene oxide sheets coupled together in a layered, interlocking structure.

In a cell-capturing filter including a metal porous membrane, degradation over time is determined earlier. A cell-capturing filter includes a metal porous membrane having a plurality of through-holes that penetrate between two principal surfaces facing each other. The metal porous membrane is made of an alloy of nickel and an element selected from the group consisting of gold, platinum, and palladium, or a metal containing nickel as a main component. A metal containing copper as a main component is attached to a part of either one of the principal surfaces of the metal porous membrane. By checking a state change of the metal containing copper as a main component, degradation over time of the metal porous membrane can be determined earlier

Superhydrophobic membrane structures having a beneficial combination of throughput and a selectivity. The membrane structure can include a porous support substrate; and a membrane layer adherently disposed on and in contact with the porous support substrate. The membrane layer can include a nanoporous material having a superhydrophobic surface. The superhydrophobic surface can include a textured surface, and a modifying material disposed on the textured surface. Methods of making and using the membrane structures.

Disclosed are a preparation method, a product and an application of a hydrophobically modified membrane based on multi-effect thermal energy conversion, the preparation method includes the steps: S1. dispersing carbon nanotubes with surfaces carboxylated in a solvent to form a dispersion; S2. applying the dispersion evenly on a PVDF membrane, and drying to form a ready-to-use membrane; S3. performing thermo-mechanical pressure treatment of the ready-to-use membrane to form a functional membrane with strong robustness; and S4. placing the functional membrane with strong robustness in an alkane solution of PDMS containing a silane coupling agent, and then taking it out for drying.

The present invention relates to a method of altering the relative proportions of protons, deuterons and tritons in a sample using a membrane. The membrane comprises a 2D material and an ionomer. The invention also relates to a method of making said membranes.

The present disclosure provides a method for producing a water permeable molecular sieve in which a porous substrate having micron-size pores has deposited on a surface thereof non-porous 2D platelets to seal, at the substrate surface, pores in the porous substrate to form a layer of 2D platelets. A curable sealing material is deposited onto the layer of 2D platelets and any remaining exposed areas of the surface of the porous substrate and curing the curable sealing material in order to form a sealed layer on the surface of the porous substrate to prevent water by-passing the non-porous 2D platelets and passing through the porous substrate. An array of sub-nanopores are then produced through the sealed layer with the array of sub-nanopores having a size to allow water to pass therethrough but not metal ions to give a water permeable molecular sieve characterized by water permeability at low di?erential pressures.

Methods are generally provided for forming a membrane. In one embodiment, the method includes: dispersing GO nanoparticles in a solvent; depositing the GO nanoparticles on a support to form a GO membrane; and reducing the GO membrane to form a rGO membrane. Also provided is the rGO membrane formed from such methods, along with a plurality of stacked rGO layers. Methods are also provided for separating water from a water/oil emulsion by, for example, passing water through the rGO membrane.

A microporous structure includes an array of nano wires and a coating about the nano wires of the array. The coating defines pores between the nano wires.