An ink for three dimensional printing a ceramic material includes metal oxide nanoparticles and a polymer resin, where a concentration of the metal oxide nanoparticles is at least about 50 wt % of a total mass of the ink. A method of forming a porous ceramic material includes obtaining an ink, where the ink comprises a mixture of metal oxide nanoparticles and a polymer, forming a body from the ink, curing the formed body, heating the formed body for removing the polymer and for forming a porous ceramic material from the metal oxide nanoparticles. The forming the body includes an additive manufacturing process with the ink.

A membrane sorbent is described, which comprises 1-6 wt % silicon carbide nanoparticles dispersed in a polymer matrix. The polymer matrix may comprise polysulfone and polyvinylpyrrolidone. The membrane sorbent is used for separating oil from a contaminated water mixture. The silicon carbide nanoparticles of the membrane sorbent may be made from rice husk ash.

A membrane including a support and an active layer. The active layer includes reacted units of a polyamine compound, a polyfunctional acid halide compound, and nickel oxide (NiO) nanoparticles (NPs). A surface of the NiO NPs is functionalized with an amino silane compound. The polyamine compound, the polyfunctional acid halide compound, and the amino silane compound are interfacially polymerized on the support to form the membrane.

A device (100) for water purification includes one or more first layers (110) including a semipermeable membrane and one or more second layers (120) in contact with the one or more first layers (110), wherein the one or more second layers (120) include an alginate hydrogel and are sufficient to draw water across the one or more first layers (110).

The present disclosure is directed to a molybdenum iron composition that includes 55 to 60 weight percent MoFe.sub.2, 33 to 37 weight percent Mo.sub.5.08Fe.sub.7.92, and 5 to 10 weight percent MoO.sub.3 based on the total weight of the composition. The composition is in the form of nanosheets. A nanocomposite membrane including the molybdenum iron composition is also provided. The nanocomposite membrane includes 0.01 to 0.5% molybdenum iron composition by weight uniformly distributed in a polyvinylidene fluoride polymeric matrix based on a total weight of the nanocomposite membrane. The nanocomposite membrane of the present disclosure finds application in filtration of a contaminated feed mixture and for generating hydrogen.

A membrane sorbent is described, which comprises 1-6 wt % silicon carbide nanoparticles dispersed in a polymer matrix. The polymer matrix may comprise polysulfone and polyvinylpyrrolidone. The membrane sorbent is used for separating oil from a contaminated water mixture. The silicon carbide nanoparticles of the membrane sorbent may be made from rice husk ash.

Provided herein are compositions, devices, and methods including nanofiber compositions comprising a polymer and nanoparticles including one or more of nickel, cobalt, silver, and tetraphenylborate, wherein the compositions are capable of binding targets in the blood related to blood disorders symptomatic of kidney disease and/or failure.

Membranes, methods of making the membranes, and methods of using the membranes are described herein. The membrane can include a support layer, and a selective polymer layer disposed on the support layer. The selective polymer layer can include a selective polymer matrix that comprises a mobile carrier comprising a sterically hindered amine or a salt thereof. The selective polymer matrix can further comprise, for example, a hydrophilic polymer, a cross-linking agent, an amine-containing polymer, or a combination thereof. The membranes can be used to separate hydrogen sulfide from carbon dioxide. Also provided are methods of purifying syngas using the membranes described herein.

A membrane includes a matrix material including chitosan; graphene oxide dispersed in the matrix material; and MXene material dispersed in the matrix material. A method for removing one or more contaminants from a fluid stream includes providing a membrane including a matrix material, graphene oxide dispersed in the matrix material, and MXene material dispersed in the matrix material; and contacting a first fluid stream and the membrane sufficient to form a second fluid stream, wherein the first fluid stream includes one or more contaminants, and wherein the one or more contaminants include at least one of an organic compound and a metal ion.

Membranes and related systems and methods for separation of components in liquids are generally described. The membrane may include particles in a polymer matrix (e.g., a polyamide layer). The particles may include metal-organic framework particles comprising functional groups (e.g., from post-synthetic modification) that can, in some instances, improve the rejection and/or selectivity of the membrane. For example, the metal-organic framework may comprise functional groups bound to hydrophobic groups (e.g., alkyl chains) that assist with suspension stability in nonpolar solvents during membrane fabrication. As another example, the metal-organic framework may comprise functional groups bound to crosslinking agents that facilitate in situ crosslinking of the particles with the polymer matrix, thereby reducing voids in the membrane and/or leaching. In some instances, the membrane is a thin-film nanocomposite membrane (e.g., for separating components like charged species and/or neutral species) formed via, for example, interfacial polymerization in the presence of the particles.