A nanobiocatalytic membrane for a filtration system is provided which includes a filtration membrane and a plurality of nanobiocatalyst nanoparticles associated with the membrane, each of the nanobiocatalyst nanoparticles including a core, a coating at least partially surrounding the core, and a plurality of nanobiocatalysts coupled to the coating. Each of the plurality of nanobiocatalysts includes an antibacterial nanoparticle comprising bismuth, and a quorum quenching agent coupled to the antibacterial nanoparticle. A nanobiocatalyst nanoparticle for use with a water purification system is also provided. A method of forming a nanobiocatalytic membrane for a filtration system and a method of using a nanobiocatalytic membrane in a filtration system are also provided.

The present disclosure provides an efficient and stable magnetic nanofiber membrane and a preparation method and use thereof, and belongs to the technical field of composites. The preparation method includes the following steps: dissolving polyacrylonitrile or polystyrene, nZVI particles, and n-octyltrimethylammonium bromide in N,N-dimethylformamide, and mixing uniformly to obtain a spinning solution; subjecting the spinning solution to electrospinning; and vacuum-drying a resulting fiber membrane to obtain the efficient and stable magnetic nanofiber membrane. In the present disclosure, the magnetic nanofiber membrane has a high specific surface area, a desirable porosity, an excellent mechanical strength, and satisfactory magnetic properties. The membrane effectively exerts a synergistic effect of the nZVI particles and an organic polymer material carrier, avoids easy oxidation of a catalyst surface and easy particle agglomeration, enhances a catalytic activity of the magnetic nanofiber membrane, and improves an efficiency in organic wastewater treatment.

A pervaporation apparatus and method for liquid mixture separation are disclosed. The pervaporation disclosed utilizes an interfacial-heating membrane utilizing induction heating to provide temperature differences across the membrane for driving liquid mixture separation. The pervaporation system may include an electromagnetic induction heating device that is placed close to or encapsulated in a membrane module wherein one or more membranes with surfaces containing ferromagnetic or other induction-responsive materials. The membrane surface generates localized heat owing to the presence of a ferromagnetic composition that converts electric energy from an induction source to thermal energy. The ferromagnetic composition could include, without limitation, metals, metal alloys, composite materials, nanocomposite materials, nanoparticles, meshes, and combinations thereof.

A nanobiocatalytic membrane for a filtration system is provided which includes a filtration membrane and a plurality of nanobiocatalyst nanoparticles associated with the membrane, each of the nanobiocatalyst nanoparticles including a core, a coating at least partially surrounding the core, and a plurality of nanobiocatalysts coupled to the coating. Each of the plurality of nanobiocatalysts includes an antibacterial nanoparticle comprising bismuth, and a quorum quenching agent coupled to the antibacterial nanoparticle. A nanobiocatalyst nanoparticle for use with a water purification system is also provided. A method of forming a nanobiocatalytic membrane for a filtration system and a method of using a nanobiocatalytic membrane in a filtration system are also provided.

This invention relates to a dual-layer, multifunctional hollow fiber membrane having at least two layers that perform two respective functions: 1) a layer that performs a separative function separating a solvent such as a liquid or gas from its solute species; and 2) a layer that performs the function of generating a magnetic field. The layer generating the magnetic field preferably has magnetic nano or micro particles embedded therein to attract, capture and/or position paramagnetic draw solute particles to maximize their osmotic effect.

Provided is an ion-conducting layer including: an ion conductive matrix; and a 1D composite dispersed in the ion conductive matrix and oriented in a membrane thickness direction, in which the 1D composite includes a core of a non-conductive 1D nanostructure; an intermediate layer enclosing the core and having magnetic nanoparticles bonded to a surface thereof; and a surface layer conducting the same kind of ions as ions in the matrix.

A nanobiocatalytic membrane for a filtration system is provided which includes a filtration membrane and a plurality of nanobiocatalyst nanoparticles associated with the membrane, each of the nanobiocatalyst nanoparticles including a core, a coating at least partially surrounding the core, and a plurality of nanobiocatalysts coupled to the coating. Each of the plurality of nanobiocatalysts includes an antibacterial nanoparticle comprising bismuth, and a quorum quenching agent coupled to the antibacterial nanoparticle. A nanobiocatalyst nanoparticle for use with a water purification system is also provided. A method of forming a nanobiocatalytic membrane for a filtration system and a method of using a nanobiocatalytic membrane in a filtration system are also provided.

A nanobiocatalytic membrane for a filtration system is provided which includes a filtration membrane and a plurality of nanobiocatalyst nanoparticles associated with the membrane, each of the nanobiocatalyst nanoparticles including a core, a coating at least partially surrounding the core, and a plurality of nanobiocatalysts coupled to the coating. Each of the plurality of nanobiocatalysts includes an antibacterial nanoparticle comprising bismuth, and a quorum quenching agent coupled to the antibacterial nanoparticle. A nanobiocatalyst nanoparticle for use with a water purification system is also provided. A method of forming a nanobiocatalytic membrane for a filtration system and a method of using a nanobiocatalytic membrane in a filtration system are also provided.

The invention provides a membrane comprising tubes extending through a polymer, wherein substantially all of the tubes are parallel with each other. Also provided is a method for producing a membrane, the method comprising: placing tubes on a substrate, subjecting the tubes to a magnetic field for a time and at a magnetic field strength to cause the tubes to align parallel with each other while simultaneously causing depending ends of the tubes to embed within the substrate; applying polymer to the tubes and substrate in an amount to affix the tubes relative to each other and relative to the substrate, and applying an etchant that cleaves a specific type of the bonds within the polymer to unblock the upstream ends of the nanotubes.

The invention provides a membrane comprising tubes extending through a polymer, wherein substantially all of the tubes are parallel with each other. Also provided is a method for producing a membrane, the method comprising: placing tubes on a substrate, subjecting the tubes to a magnetic field for a time and at a magnetic field strength to cause the tubes to align parallel with each other while simultaneously causing depending ends of the tubes to embed within the substrate; applying polymer to the tubes and substrate in an amount to affix the tubes relative to each other and relative to the substrate, and applying an etchant that cleaves a specific type of the bonds within the polymer to unblock the upstream ends of the nanotubes.