A composite material of polyurethane foam having a layer of reduced graphene oxide and polystyrene is described. This composite material may be made by contacting a polyurethane foam with a suspension of reduced graphene oxide, drying, and then irradiating in the presence of styrene vapor. The composite material has a hydrophobic surface that may be exploited for separating a nonpolar phase, such as oil, from an aqueous solution.

A method for synthesizing a hydrophilic graphene-modified polyurethane foam membrane, is described. The method includes functionalizing graphene oxide particles with tartronic acid to form a functionalized product having a hydrophilic functional group; and reacting the functionalized product with a polyurethane to form the hydrophilic graphene-modified polyurethane foam membrane. The hydrophilic graphene-modified polyurethane foam membrane has a water adsorption capacity of at least 20 g/g. The hydrophilic graphene-modified polyurethane foam membrane is adapted for a use selected from the use group consisting of oil and water separation, water treatment, desalination, and pharmaceutical filtration.

The present disclosure generally relates to carbon sequestration materials, and related systems, articles, and methods. In some embodiments, the carbon sequestration material comprises a gel. In some embodiments, the gel comprises a hydrophilic material, a thermo-responsive polymer, and a carbon dioxide capture medium. In accordance with some embodiments, the gel, when in the presence of water, is capable of sequestering and/or releasing gaseous carbon dioxide. In some embodiments, the gel has a relatively large sequestration capacity such that a relatively large amount of carbon dioxide per gram of gel can be sequestered by the gel. In some embodiments, the gel sequesters a surprisingly large amount of carbon dioxide when exposed to relatively humid conditions. In some embodiments, the gel releases an advantageous amount of gaseous carbon dioxide that was previously sequestered by the gel.

The invention is directed to a nanostructured composite material comprising a mixture of at least one metal particle such as iron and a carbon material from biomass such as D-glucose, D-glucosamine hydrochloride or -cyclodextrin. The invention is also directed to a composition comprising the composite material comprising the composite material and an inorganic salt, and a method for synthesizing the composite material comprising immersing the carbon material into a solution of metal ions, drying the impregnated carbon particle and subjecting the impregnated carbon particle to a carbothermal reduction process. The nanostructured composite material is useful as an oxygen scavenging layer in a multi-layer film which comprises the oxygen scavenging layer and an oxygen barrier layer that retards the permeation of oxygen from an external environment.

Tailored chromatographic media and methods for using the tailored chromatographic media to purify mixtures extracted from cannabis to obtain a cannabinoid having greater than about 90% purity. In an embodiment, the tailored chromatographic media may comprise a porous resin and/or porous carbon and have a surface area of greater than about 900 m2/g, wherein the tailored chromatographic media may further comprise micropores, mesopores, macropores, wherein the tailored chromatographic media may further comprise at least two distributions of macroporous pore sizes, wherein the at least two distributions of macroporous pore sizes may comprise a first population having a macroporous pore size denoted x and a second population having a macroporous pore size denoted y, wherein a ratio of x/y may be about 1:1, and wherein the tailored chromatographic media may further comprise an anionic polysaccharide and a functional moiety.

Provided herein phosphorous-boron bonded compounds which are configured for capturing CO.sub.2 with high affinity and tunability to specific CO.sub.2 capture needs and related products, compositions, methods and systems for capturing storing and/or utilizing carbon dioxide.

Methods of producing functionalized materials are provided. Porous particles are introduced to a functionalization mixture including a volatile solvent. The functionalization mixture includes an adsorbing moiety including polyethylenimine, an interaction moiety including a silane moiety, a polymer, a crosslinking agent, a chelating agent, or an antioxidant. Porous particles are characterized by a porosity distribution between 100 and 200 nanometers and a diameter distribution between 0.8 and 3 millimeters. Functionalized particles are created through deposition of the functionalization mixture on a surface of a porous particle to form a surface modification layer. Compositions and functionalized materials are also provided.

Devices and methods related to a chitosan-enhanced melamine sponge are provided. A method comprises grafting chitosan on the melamine sponge matrix via the chemical with two or more carboxyl groups; and crosslinking the chitosan with crosslinker under a heating procedure to make a more robust melamine sponge with a larger surface and smaller pores. The chitosan-enhanced melamine sponge is used to separate chemicals from water as a gravity flow-driven filter, and it can be compressed and backwashed for regeneration.

Provided herein is a chromatography media composed of a porous solid substrate (such as a membrane, metal, or metallic alloy) that is coated with hydroxyapatite (HA). Also provided is a chromatography media comprising a HA-coated substrate and uses thereof. Thus this disclosure provides a chromatography media composed of a porous solid substrate (such as a membrane, metal, or metallic alloy) that is coated with HA. Also provided is a chromatography media comprising a HA-coated substrate and uses thereof. Methods of preparing the HA-coated substrate are also provided.

A porous structure includes a plurality of glass bubbles that are sintered to one another such that adjoining glass bubbles are physically bonded directly to one another. The glass bubbles have surfaces that define interstices throughout the porous structure. The interstices include closed interstices that do not open to surfaces of the porous structure. At least 50% of the glass bubbles are closed glass bubbles with each closed glass bubble defining a sealed void therein. The porous structure has at least 10% closed porosity and at least 40% open porosity. The closed porosity includes the sealed voids and the closed interstices. A method for making the porous structure includes heating the glass bubbles. Prior to the heating, substantially all of the glass bubbles are closed glass bubbles. At least 50% of the glass bubbles remain closed after the heating such that the sintered, closed glass bubbles form the porous structure.