The present disclosure pertains to compositions comprising a non-porous particle core coated with a hydrophilic polymer with surface-grafted polyionic chains. In some aspects, the present disclosure pertains to chromatographic separation devices that comprise such compositions. In some further aspects, the present disclosure pertains to chromatographic methods that comprise: (a) loading a sample onto a chromatographic column comprising such compositions and (b) flowing a mobile phase through the column.

Sorbent materials that are treated with ions, salts, oxides, hydroxides, or carbonates of calcium, magnesium, strontium, or barium are useful in removing perfluoroalkyl and polyfluoroalkyl substances (PFAS), perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), 2,3,3,3,-tetrafluoro-2-(heptafluoropropoxy)propanoate and heptafluoropropyl 1,2,2,2-tetrafluoroethyl ether, and similar compounds from liquids and gases are disclosed. The sorbent materials with the disclosed treatments offer improved performance as measured against untreated sorbent materials.

A method for preparing a filling material includes: dissolving FeCl.sub.3.Math.6H.sub.2O and an imprinted molecule in water to form a reaction solution; adding DMF to the reaction solution and stirring for dissolution; adding BDC to the reaction solution and stirring for dissolution; soaking PC into the reaction solution and stirring; and treating the reaction solution by a hydrothermal method to remove a molecule of an additive decomposition product and prepare the filling material imprinted with a casting structure of the molecule of additive decomposition product. The present invention can effectively and selectively adsorb the additive decomposition products and achieve the effects of effectively removing the additive decomposition products, preventing the decomposition products from being mixed in an electrodeposition film of the copper, realizing the uniform distribution of current on the cathode and the anode, improving the quality and preparing an electrolytic copper foil for high-frequency signal transmission.

A diffusive air purifier includes an air permeable container containing a chemical sorbent or a sorbent precursor. The sorbent has a chemical composition selected to achieve removal of an air pollutant via a chemical reaction that renders the predetermined air pollutant immobile. A method of manufacturing the diffusive air purifier includes impregnating a porous solid with a solution of sorbent precursor and a binding agent and drying the porous solid. A method of purifying indoor air includes detecting a measured concentration of an airborne chemical in an enclosed location; selecting the diffusive air purifier to adsorb the airborne chemical; and placing the diffusive air purifier in the enclosed location. Air diffuses through the outer container and into the sorbent where the chemical to be removed is retained. Air, free of the target chemical, diffuses out of the container and the process repeats.

Described herein is a multilayered article comprising a functionalized porous substrate. Such functionalized porous substrates can be used in the detection of analytes, wherein a reagent matrix comprising: (1) a plurality of first capture components, wherein the first capture component comprises a first analyte capture site and a porous substrate binding site; and (2) a plurality of a second capture component, wherein the second capture component comprises a second analyte capture site; wherein at least one of the first or second capture components comprises a detection medium; is contacted with an analyte and then disposed onto the functionalized porous substrate for analysis. In one embodiment, a novel monomer used to functionalize a substrate is described.