Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material.

A hybrid porous structured material may include a matrix including a plurality of first pores interconnected in three dimensions, and a porous material including second pores and filling wholly or partially each of the plurality of the first pores.

A water-proof air-permeable filter (1) includes: a resin film (2) having formed therein a plurality of through pores (21); a treated layer (3) having hydrophobicity and oil repellency, and formed on at least one of both surfaces in the thickness direction of the resin film (2) such that the treated layer (3) has openings (31) at positions corresponding to the through pores (21); and a loop-shaped double-sided tape (4) stuck to an edge region of one of both surfaces in the thickness direction of the resin film (2), with the treated layer (3) interposed therebetween.

A method of forming a filter with uniform pore sizes includes synthesizing a moiety so as to form a plurality of like platelets having a precisely sized pore extending therethrough, distributing the plurality of like platelets about a membrane having apertures therethrough, and bonding the plurality of platelets around the apertures to form precisely sized pores through the membrane. A filtration membrane is also disclosed which provides a porous membrane having a plurality of apertures therethrough, and a plurality of platelets, wherein each platelet has a pore therethrough. The platelets are positioned over or in the apertures.

The present invention relates to a nanofilter formed by using a porous ultrafiltration membrane as a precursor, and carefully controlling reaction conditions so as to maintain sufficient hydrophilic nature of the membrane while causing the pore structure to close to a nanofilter range (less than 400 Daltons). This produces a solvent stable cellulose nanofiltration membrane capable of operating at satisfactory flux in aqueous solutions, and being low binding to organic biomaterials.

The invention relates to a process for preparing a filtration membrane having an average molecular out-off of <1000 g/mol.

A method of forming a filter with uniform pore sizes includes synthesizing a moiety so as to form a plurality of like platelets having a precisely sized pore extending therethrough, distributing the plurality of like platelets about a membrane having apertures therethrough, and bonding the plurality of platelets around the apertures to form precisely sized pores through the membrane. A filtration membrane is also disclosed which provides a porous membrane having a plurality of apertures therethrough, and a plurality of platelets, wherein each platelet has a pore therethrough. The platelets are positioned over or in the apertures.

A metal coated polymer membrane, a method for the production thereof, an electrofiltration device or electrosorption device, and a method of electrofiltration and electrosorption using a metal coated polymer membrane. The polymer membrane is coated with metal using Atomic layer deposition (ALD).

Transport of a vaporizable liquid containing at least one solute through a material containing nanochannels is performed by contacting material with at least one vaporizable liquid component and inducing liquid transport along nanochannel interior wall surfaces, wherein the material contains nanochannels having an average diameter up to about 300 nm, preferably up to about 100 nm, and liquid transport is induced by partial liquid vaporization. A film of solid material is deposited onto an Interior nanochannel wall surface by removing the transport liquid.

Transport of a vaporizable liquid containing at least one solute through a material containing nanochannels is performed by contacting material with at least one vaporizable liquid component and inducing liquid transport along nanochannel interior wall surfaces, wherein the material contains nanochannels having an average diameter up to about 300 nm, preferably up to about 100 nm, and liquid transport is induced by partial liquid vaporization. A film of solid material is deposited onto an Interior nanochannel wall surface by removing the transport liquid.