A gas separation membrane, a method for making the gas separation membrane, and a method for using the gas separation membrane are provided. An exemplary gas separation membrane includes a polyether-block-polyamide (PEBA) matrix and a cross-linked network including functionalized polyhedral oligomeric silsesquioxane (POSS) nanoparticles dispersed through the PEBA matrix.

Methods and systems for the separation of hydrogen isotopes from one another are described. Methods include utilization of a hydrogen isotope selective separation membrane that includes a hydrogen isotope selective layer (e.g., graphene) and a hydrogen ion conductive supporting layer. An electronic driving force encourages passage of isotopes selectively across the membrane at an elevated separation temperature to enrich the product in a selected hydrogen isotope.

The present disclosure is related to processes for efficient large-scale preparation of alkylated cyclodextrins. The processes of the present disclosure provide high purity alkylated cyclodextrins with high purity and low levels of chloride while improving efficiency, increasing batch size, and reducing total process time.

Methods of fabricating a porous membrane are disclosed. The first method includes the following operations. A mesoporous silica thin film with perpendicular mesopore channels is grown on a polymer film. The mesoporous silica thin film and the polymer film are transferred onto a macroporous substrate, in which the polymer film is positioned between the macroporous substrate and the mesoporous silica thin film. The polymer film is removed to form the porous membrane. The second method includes the following operations. A polymer film is formed on a macroporous substrate, wherein the polymer film includes crosslinked polymers including cross-linked polystyrene, cross-linked polymethyl methacrylate, or a combination thereof. A mesoporous silica thin film with perpendicular mesopore channels is grown on the polymer film. The polymer film is removed to form the porous membrane.

A method of producing a silicalite membrane, which includes heating an aqueous solution that includes a dopant precursor and structure-directing template agents to form silicalite seeds incorporated with a dopant, depositing a buffer layer on a ceramic substrate prior to depositing the silicalite seeds on the buffer layer, contacting the ceramic substrate with a solution including the silicalite seeds to form a silicalite layer from the silicalite seeds on the ceramic substrate, and removing the structure-directing template agents to form the silicalite membrane, where the silicalite layer includes silicalite crystals incorporated with a dopant and each of the silicalite crystals has a hollow structure which forms the pores of the silicalite layer. The silicalite membrane includes a ceramic substrate having a buffer layer formed thereon, and a silicalite layer formed on the buffer layer, where the silicalite layer includes silicalite crystals incorporated with a dopant.

Disclosed herein are filtration articles comprising a porous ceramic structure comprising a plurality of channels separated by a plurality of porous interior walls, and a nanomembrane disposed on at least a portion of a surface of the porous ceramic structure, wherein the nanomembrane comprises nanoparticles of at least one inorganic oxide, and wherein the nanoparticles are present in a concentration ranging from about 0.001 g/L to about 1 g/L based on the total volume of the porous ceramic structure. Methods for making such filtration articles and methods for filtering a particulate from a fluid using such filtration articles are also disclosed herein.

Methods of fabricating a porous membrane are disclosed. The first method includes the following operations. A mesoporous silica thin film with perpendicular mesopore channels is grown on a polymer film. The mesoporous silica thin film and the polymer film are transferred onto a macroporous substrate, in which the polymer film is positioned between the macroporous substrate and the mesoporous silica thin film. The polymer film is removed to form the porous membrane. The second method includes the following operations. A polymer film is formed on a macroporous substrate, wherein the polymer film includes crosslinked polymers including cross-linked polystyrene, cross-linked polymethyl methacrylate, or a combination thereof. A mesoporous silica thin film with perpendicular mesopore channels is grown on the polymer film. The polymer film is removed to form the porous membrane.

A method for preparing a SiO.sub.2-polyethersulfone conductive ultrafiltration membrane and the ultrafiltration membrane comprises hydrophilic CF cloth as the conductive membrane base, which provides an effective carrier for the preparation of a stable and efficient conductive membrane. After pretreatment, the silica solution was combined with the membrane via film scraping. Then phase catalysis and polymerization of PES onto the film obtained the final silica dioxide-polyethersulfone conductive ultrafiltration membrane. The silica solution was applied in the form of a coating on the hydrophilic CF cloth, in which silicon dioxide combined with the hydrophilic CF cloth, avoiding electrochemical interference. The modified hydrophilic CF cloth improved the hydrophilicity of the conductive film, with silica firmly attaching to PES and improving the stability of the SiO.sub.2-polyethersulfone conductive ultrafiltration membrane. After 8 cycles of reuse, the performance of the membrane remained stable.

Provided herein is a method of forming a bicontinuous intraphase jammed emulsion gel.

Gas separation membranes as may be used in separating gaseous materials from one another and methods of forming the membranes are described. The separation membranes include polymer-grafted nanoparticles (GNPs) as a platform and a relatively small amount of free polymer. The free polymer and the polymer grafted to the nanoparticles have the same chemical structure and similar number average molecular weights. The gas separation membranes can exhibit high ideal selectivity and can be used in a variety of applications, such as carbon capture.