A solid phase microextraction substrate is disclosed. The solid phase microextraction substrate has a sorbent coating on at least part of a surface thereof. The coating is adapted for extracting at least one analyte component from a fluid matrix. The coating includes sorbent particles in a polymeric adhesive matrix. A majority of pores in each sorbent particle in the coating do not contain substantially any of the polymeric adhesive matrices.

This present invention discloses method for in-situ generation of nanoflower-like manganese dioxide catalyst on filter material. The method comprises: immersing a filter material in a solution containing sodium lauryl sulfate and nitric acid; first modifying the surface of the filter material by using the sodium lauryl sulfate so that a charge layer is wound around the surface of the filter material and tightly absorbs H.sup.+ in an acid solution; and then adding potassium permanganate as an oxidant to react with H.sup.+ on the surface of the filter material to generate nano flower-like manganese dioxide in situ on the surface of the filter material, so as to obtain a composite filter material having a denitration function. Since the surface of the filter fiber is uniformly coated with a layer of nanoflower-like manganese dioxide, the manganese dioxide of such a morphology has a larger specific surface area and a higher pore volume than ordinary manganese dioxide, and is more conducive to the diffusion of the reaction gas, and therefore the catalytic filter material has very excellent low-temperature activity, the NOx removal efficiency reach 97% at 160 C., and the composite filter material has excellent bonding strength, gas permeability and catalytic stability. In addition, the method is environmentally friendly, reagents used in the experiment are cheap and readily available, and the experimental process is easy to operate, and the reaction process takes only 2-3 hours; therefore, the method is advantageous for large-scale experimental production.

The present invention relates to a sorbent which is suitable for binding metals from solutions, the production of a corresponding sorbent as well as the use of the sorbent for binding metals from solutions.

A polymer aerogel monolith comprising a polymer aerogel having a nitrogen content of greater than seven weight percent impregnated into a mesh. A method of manufacturing an amine-containing polymer aerogel monolith, includes combining a vinyl-containing cross-linking monomer, a vinyl-containing functional monomer, an organic solvent, and a radical initiator into a liquid mixture, applying the liquid mixture to a mesh fabric to produce a monomer-impregnated mesh, heating the monomer-impregnated mesh to produce a polymer aerogel monolith, washing the polymer aerogel monolith with acid to produce an ammonium-containing polymer aerogel monolith, and applying a base to neutralize the ammonium-containing polymer aerogel monolith to produce an amine-containing polymer aerogel monolith. A direct air capture module has one or more amine-containing polymer aerogel monoliths, one or more air flow channels positioned to pass air through the monolith A monolith comprising a poly(alkylamine-co-divinylbenzene) impregnated mesh.

A method for manufacturing an adsorption agent for treating compressed gas, which includes the steps of providing a monolithic supporting structure; producing a coating suspension that includes an adsorbent; applying the coating suspension on the supporting structure to form a coating; applying a thermal treatment to the coated supporting structure in order to sinter the coating.

In some embodiments, the present disclosure relates to a system. The system includes a substrate and a fluid capture material formed on one or more surfaces of the substrate. The fluid capture material includes a sorbent material that binds one or more fluids, the one or more fluids comprising water, carbon dioxide, sulfur oxides, or a combination thereof. The fluid capture material also includes one or more binder materials, wherein the binder material is at least partially cross-linked.

The disclosed subject matter relates to a microcapsule including a particle core selected from activated carbon (AC), super activated carbon (SAC), MOF composition, multifunctional material or a mixture thereof and a water-soluble polymer shell, including a membrane into which the microcapsule is incorporated, a membrane with exposed AC, SAC, MOF, or multifunctional materials or mixture thereof formed therefrom and methods used is the formation of all of the above.

A method for producing a core-shell hybrid material made of an activated carbon core surrounded by a mesoporous silica sol-gel shell, the method including the formation of a mesoporous silica sol-gel shell around activated carbon particles. Also, the core-shell hybrid material formed by the method, and its use as a filtering material in filtering systems.

A composite particle is described herein. The composite particle can contain a seed particle of an agricultural treatment material and a shell disposed on the seed particle, wherein the shell comprises a clay.

Compositing a gas adsorbant, macroporous object includes the immersion of a macroporous substrate into a charge stabilized suspension of nanoparticles that has been adapted for electrostatic repulsion. In this regard, the macroporous substrate includes a multiplicity of pores and demonstrates a compatibility with an adsorbant additive while lacking a repellant reaction to the charge stabilized solution. The nanoparticles are then positioned onto different walls of the pores resulting in the decoration of the macroporous structure with high surface volume materials. Finally, the macroporous substrate is removed from the suspension and dried. Thereafter, a gas adsorbant additive is introduced onto both surface portions of the macroporous substrate and also to the different walls of the pores of the macroporous substrate.