A method of producing a mesoporous chitosan/sodium iron silicate (NaFeSi.sub.2O.sub.6) nanocomposite includes hydrothermally treating a mixture of sodium metasilicate pentahydrate (Na.sub.2SiO.sub.3.Math.5H.sub.2O) with iron(III) chloride hexahydrate (FeCl.sub.3.Math.6H.sub.2O) to obtain NaFeSi.sub.2O.sub.6 nanoparticles. The method further includes combining the NaFeSi.sub.2O.sub.6 nanoparticles with a solution of chitosan to generate a precursor mixture; treating the precursor mixture with sodium hydroxide (NaOH), resulting in a nanocomposite where chitosan coats and aggregates the NaFeSi.sub.2O.sub.6 nanoparticles into rod-like structures. The resulting nanocomposite exhibits unique textural properties with mesopores larger than 15 nm, is ideal for adsorption, separation, and catalysis, and can be produced under mild conditions without complex procedures or hazardous chemicals.

A carrier for adsorption a compound, comprising a support; and a shrink-fitted monolithic body attached to and surrounding at least a portion of the support. The monolithic body can be porous and configured to bind compounds in a solution either for the isolation or depletion of the compounds from the solution.

The present disclosure provides for substituted epoxide modified sorbents and contactors, methods of using sorbents and contactors to capture CO.sub.2, structures including the sorbent, and systems and devices using sorbents and contactors to capture CO.sub.2. The present disclosure provides for sorbents and contactors that can include a CO.sub.2-philic phase and a support. The CO.sub.2-philic phase can include a modified amine polymer that is the reaction product of an amine and a substituted epoxide.

Polymer composite materials are disclosed containing one or more chemical scavengers. The polymer composites are porous and are configured to be contacted with a liquid for removing trace amounts of metals, proteins, polypeptides, polyphenols, other organic compounds, and the like. In order to produce the porous composite polymer product, one or more chemical scavengers are combined with high density polyethylene particles and sintered into a shape. The polyethylene resin acts as a binder trapping or encasing the one or more chemical scavengers in the porous structure.

This invention relates to a new stationary phase carrying functional groups comprising a halogen substituted aromatic ring. Target molecules can interact with this stationary phase by halogen bonding. The stationary phase is suitable for SPE or chromatographic separations.

A micro-separator for gas chromatography includes a base substrate having a trench defining a micro-column, and a three-dimensional (3D) porous ceramic-polymer composite disposed in the micro-column and having pores that three-dimensionally connected to each other with periodicity. The 3D porous ceramic-polymer composite includes a ceramic nano-structure, which forms an array of three-dimensionally arranged nano-shells, and a reaction-activating layer combined on a surface of the ceramic nano-structure and including a polymeric reaction-activating material. A thickness of the 3D porous ceramic-polymer composite is 10 m to 20 m, a column length of the 3D porous ceramic-polymer composite is 30 cm to 70 cm, and a shell thickness of the ceramic nano-structure is 20 nm to 60 nm. The micro-separator may have improved separation performance and durability.