73 results about "Highly porous" patented technology

The invention relates to a nanofiber membrane and a preparation method and application thereof, the preparation method comprises the following steps: (1) mixing polyurethane, nano lanthanum oxide, a waterproof agent and a solvent to obtain a spinning solution; (2) performing electrostatic spinning on the spinning solution to obtain an electrostatic spinning membrane; and (3) spraying the after-finishing liquid on the electrostatic spinning membrane, and then carrying out heating treatment to obtain the nanofiber membrane. Polyurethane is stretched into superfine fibers through an electrostatic spinning technology, an ultrahigh porous membrane similar to a spider web is prepared, billions of nanopores are formed in per square centimeter of the porous membrane, so that the porous membrane has high air permeability and waterproof and moisture-permeable performance, fibers are bound through a fiber bonding point technology, and the fiber bonding point technology is adopted, so that the waterproof and moisture-permeable performance of the membrane is improved. Therefore, the fabric has excellent washing resistance. The nano lanthanum oxide heating functional particles are added, so that the nanofiber membrane is endowed with heating and heat storage functions, and the washing resistance of the fabric is further improved.

The present disclosure describes membranes suitable for use in soft tissue repair applications that are composed of fibrous and highly porous biodegradable materials fabricated using electrospinning and that may be surface-modified with plasma treatment or other suitable methods of surface modification. The disclosed membranes have a high surface area to volume ratio. In some implementations, use of the disclosed membranes provides a barrier that prevents the migration of soft tissue cells but is permeable to small molecules such as nutritional substances and medications. In other implementations, use of the disclosed membranes provides a scaffold to facilitate soft tissue repair by providing a suitable environment for cellular infiltration and interaction to promote tissue regeneration. Methods of fabricating the disclosed resorbable membranes for soft tissue repair applications using electrospinning are also disclosed. The disclosed membranes may have precisely tuned physical, chemical, and mechanical properties optimized for various soft tissue repair applications.

A method of making porous carbon particles is disclosed. The method includes: (A1) making a solution including a magnesium organic salt composition; (A2) precipitating particles of the magnesium organic salt composition from the solution; (A3) pyrolyzing the particles of the magnesium organic salt composition to form precursor composite particles including carbon and at least one magnesium compound; and (A4) selectively removing the magnesium compound(s) from the precursor composite particles to convert the precursor composite particles to the porous carbon particles. In some implementations, the at least one magnesium compound includes MgO. A related method of forming silicon-carbon composite particles is also disclosed. Porous carbon particles, silicon-carbon composite particles, anode electrodes, lithium-ion rechargeable batteries, and other related processes and components are also disclosed.

The application provides a high-drug-loading porous breviscapine crystal and a preparation method thereof. The crystal is prepared by a solvent diffusion method, does not contain auxiliary materials, and has high drug purity. The crystal is a highly porous, spherical, round, particle-size-controllable, large-particle-size crystal particle, and is easy to implement in an industrial scale. The process is green, and the crystal is crystallized in an aqueous solution. The solvents used can be recycled and reused. The porous breviscapine crystal prepared by the application has rapid in-vitro dissolution, improved flowability and compressibility, and is beneficial to further preparation molding.

The present application belongs to the field of wastewater treatment technology and energy saving and environmental protection, and particularly relates to a method for preparing aerogel for selectively separating radionuclide cesium in water and application thereof. Graphene oxide is prepared by using hydrothermal technology, and then molybdenum disulfide / GO aerogel is prepared by using hydrothermal synthesis and ultrasonic technology, and then prussian blue (PB) is inlaid and grown on the surface of the aerogel, so as to solve the problems of easy agglomeration and difficult recovery of PB and MoS2, endow the GO aerogel with multifunction, and construct PB / MoS2 / GO aerogel for selectively separating radionuclide cesium in water. The selective separation performance of the aerogel for radionuclide cesium in water under different conditions is investigated, the highly efficient enrichment and recovery of radionuclide cesium are effectively realized by using the super-light and highly porous characteristics of the aerogel, and the application potential of the aerogel in reducing secondary pollution and improving environmental governance effect is verified. The present application provides an efficient and environmentally friendly solution for radionuclide wastewater treatment, and has a wide market application prospect.

The subject of the present invention is a highly porous alumino-naphthalene dicarboxylic organic framework of molecular formula AI(C12H6O4) • X (CH3)2NHC(O)H • 3 H2O, where X denotes 0.22 or 0.25 and a composite of a highly porous alumino-naphthalene dicarboxylic organic framework defined above with nanostructural gold of molecular formula AI(C12H6O4) • Y (CH3)2NHC(O)H • Z S • 0.01 Au* 3 H2O where Y denotes 0.13 or 0.14, and Z denotes 0.05 or 0.1, and also the methods of their production and use in the catalytic conversion of CO2 to cyclic esters.

The present invention belongs to the field of polymer materials and discloses a porous polymer microsphere and a preparation method thereof, comprising the following steps: (1) mixing polymer seed microspheres with an alcohol solvent, water, and a porogen, controlling the volume ratio of the alcohol solvent to water to be greater than 6.5:5.5, and allowing the mixed solution to form an emulsion under high-speed stirring conditions; the surface of the polymer seed microspheres has hydrophilic groups; (2) stirring the mixed emulsion at a low speed for more than 10 minutes to obtain a suspension; (3) subjecting the suspension to rotary evaporation, washing, and drying after the solvent has fully evaporated to obtain porous polymer microspheres. The present invention only requires a one-step reaction, does not require the use of special additives such as surfactants and etchants, and does not require additional porogens or complex precision equipment. Highly porous polystyrene microspheres with interconnected open pore structures and uniform size distribution can be prepared within 2 hours at room temperature. The microspheres have a large specific surface area and pore volume.

The present invention relates to providing a dehumidifier apparatus with a desiccant wheel incorporating special adsorbent materials, which are highly porous, with surface area in a range of 500 m2 / g to 10000 m2 / g. These dehumidifier apparatuses having desiccant wheels incorporating special desiccant materials have demonstrated the ability to not only be regenerated well at temperatures of less than 100 degC to 120 degC, but have also shown greater than 15-25% higher adsorption performance (water removal), under similar operating conditions.

The disclosed composite scaffold provides a highly porous and flexible structure that substantially maintains its three-dimensional shape under tension and provides mechanical reinforcement of the repair or reconstruction-first via scaffold mechanical properties, and subsequently, through newly regenerated functional tissue as the scaffold is resorbed.

The invention relates to a composite phase-change material (PCM) comprising a highly porous PLR aerogel and a PCM, wherein the PCM occupies an internal volume of the aerogel. This material takes full advantage of the highly porous aerogel which is capable of entrapment of high amounts of PCM, while avoiding leakage of the PCM. The physical properties of the material of the invention can be tailored by the incorporation of different functional additives. The invention further relates to a polymer / phase-change material comprising a 3D-printed polymer skeleton, and aerogel and a PCM. Methods for the preparation of these materials are also within the scope of the invention as well as their use and applications.

The invention discloses a foamed nickel loaded (NiO) 0.75 (MnO) 0.25 porous nanosheet solid solution electrode material and a preparation method and application thereof, relates to the field of material science, nanotechnology and new energy, and utilizes in-situ diffusion and lattice reconstruction of a NiO / Mn3O4 heterojunction obtained by microwave-assisted hydrothermal treatment in a medium-high temperature heat treatment process under specific conditions to prepare a porous nanosheet solid solution electrode material. According to the preparation method, a two-dimensional nanosheet array structure which is uniformly arranged and mutually connected can be induced and converted into a (NiO) 0.75 (MnO) 0.25 porous nanosheet solid solution with a highly porous and uniformly arranged and connected two-dimensional nanosheet array structure, so that the electrochemical accessible surface area is effectively increased, and the charge transfer kinetics is accelerated; therefore, high specific capacity, wide voltage window and excellent cycle durability are shown in an alkaline-condition water system supercapacitor. The method is simple in process, good in repeatability and suitable for large-scale preparation of the high-performance alkaline aqueous supercapacitor electrode material.

The invention discloses a preparation method and application of a double-active-site tungsten oxide-based electrode, and relates to a preparation method of a Li-CO2 battery catalyst. The invention aims to solve the problems that the existing WO3-based catalyst is poor in intrinsic conductivity and limited in active site, so that the catalytic activity is not ideal, and the WO3-based catalyst cannot be used as a Li-CO2 battery catalyst. According to the preparation method, double active sites of N doping and O vacancy are introduced into tungsten oxide by utilizing double-defect engineering, and the tungsten oxide is used as a Li-CO2 battery catalyst, so that excellent CER and CRR activities can be realized at the same time, and the capacity and reversibility are improved; the self-supporting N-Ov-W5O14 nanosheet array has a rough surface, a highly porous structure and a relatively large surface area. The Li-CO2 battery based on the double-active-site tungsten oxide-based electrode prepared by the preparation method disclosed by the invention realizes ultralow overpotential (1.25 V) and stable cycle life as long as 2190 hours under the current density of 20 [mu] Accm <-2 >.

The present invention relates to the technical field of supercapacitors, and particularly to MOF-derived highly porous carbon aerogels and their application to supercapacitors. The MOF-derived highly porous carbon aerogels are obtained by pyrolytic decomposition of the MOF-ZX-5 material, and the MOF-ZX-5 material is [Zn(tppa)2Cl2]. The present invention uses a novel MOF-ZX-5 as a precursor to design and synthesize a novel carbon aerogel material (MOF-derived highly porous carbon aerogel) as an electrode material for supercapacitors. The MOF-ZX-5-derived highly porous carbon aerogels have high porosity, a large specific surface area, and excellent capacitance performance. Their use as supercapacitor electrode materials features high specific capacitance, power density, and energy density, as well as fast charge and discharge rates and excellent cycle stability.

The disclosed composite scaffolds provide a highly porous and flexible structure that substantially maintains its three-dimensional shape under tension and provides mechanical reinforcement to the repair or reconstruction, first through the mechanical properties of the scaffold and then through the newly regenerated functional tissue as the scaffold is resorbed.

The invention discloses a high-molecular mediator catalyst, a composite positive electrode material and application of the composite positive electrode material. The high-molecular mediator catalyst is prepared from an organic micromolecular monomer with oxidation-reduction activity through a chemical or electrochemical polymerization method. A composite positive electrode material of a rechargeable metal-air battery or a lithium-sulfur battery is composed of the polymer mediator catalyst, a carbon material and a binder. The high-molecular mediator is formed by polymerizing organic micromolecular monomers through a chemical or electrochemical method, has a multifunctional catalytic characteristic, and is compounded with a high-pore carbon material to form a composite positive electrode material with a synergistic effect, so that the charge-discharge efficiency, the capacity and the cycle stability of a battery are remarkably improved.

This invention discloses a method for preparing and applying a biomass carbon-derived metal-based composite sulfur cathode for all-solid-state batteries, belonging to the field of all-solid-state lithium-sulfur battery technology. The invention first prepares a biomass carbon BC-Cu material, using sulfur powder (S) as a substrate and adding Ketjen black (KB) to form a sulfur cathode (S@KB). Then, BC-Cu material is added to this cathode to form a composite sulfur cathode S@KB-BC-Cu. The BC-Cu material prepared by this invention exhibits a highly porous structure, nanoscale size, and good reproducibility and controllability, laying a solid foundation for subsequent research and application of material properties. When the composite sulfur cathode prepared by this invention is used in an all-solid-state lithium-sulfur battery, it exhibits high discharge specific capacity, good cycle stability, and excellent rate performance.

The present invention discloses an efficient filling mining method based on gangue-cemented highly porous materials. By using a post-supporter spraying system to spray a fast-setting material to form gangue-cemented highly porous materials together with gangue, an efficient filling mining technology for self-expanding roof contact of filling materials is realized, solving the problems of insufficient gangue materials required for large-scale filling and low filling efficiency, including an efficient filling mining process and a method for controlling the shape of the filling heap. In the efficient filling mining process, the blanking process and the spraying process are executed synchronously, and the support moving process lags behind. The method for controlling the shape of the filling heap is to control the blanking speed, spraying speed, spraying pressure, spraying angle, and spraying rotation speed according to the height of the filling heap, thereby controlling the shape of the filling heap. The present invention can control the movement of the roof rock stratum of the working face while breaking through the problems of filling mining efficiency and insufficient gangue materials. The method is simple and efficient, and the working process is safe.

Disclosed are elongate ceramic (nano)particles that include γ-alumina. In some implementations: a mass fraction of the γ-alumina in the elongate ceramic (nano)particles is in a range of about 70 to about 100 wt. %, a Brunauer-Emmett-Teller specific surface area (BET-SSA) of the elongate ceramic (nano)particles is in a range of about 30 to about 400 m2 / g, an average aspect ratio of the elongate ceramic (nano)particles is at least about 3, and a cumulative pore volume of the elongate ceramic (nano)particles in a pore width range of 7 to 20 nm is in a range of about 1.0×10−2 to about 1.0 cm3 / g. A separator, an integrated electrode-separator component, and a lithium-ion battery incorporating the elongate ceramic (nano)particles are also disclosed. Related methods of making a separator, an integrated electrode-separator component, and a lithium-ion battery are also disclosed.

The present invention discloses a conductive electromagnetic ceramic nanofiber aerogel, a preparation method thereof and an application thereof. The preparation method comprises the following steps: mixing an aqueous solution of polyethylene oxide and tetraethyl orthosilicate to prepare precursor nanofibers; curing, pyrolyzing and cooling the precursor nanofibers, and uniformly dispersing them in an aqueous phase to obtain an aqueous dispersion of SiO2 nanofibers; mixing the aqueous dispersion of SiO2 nanofibers, an aqueous dispersion of graphene oxide and ZIF-67 powder uniformly, and then performing liquid nitrogen freezing treatment; freeze-drying the product after the liquid nitrogen freezing treatment and annealing it in an inert atmosphere to obtain a conductive electromagnetic ceramic nanofiber aerogel. The ultra-light, biomimetic porous, conductive and magnetic ceramic nanofiber aerogel provided by the present invention utilizes the strong binding points of graphene with renewable flexible SiO2 nanofibers and magnetic components to construct an interconnected highly porous aerogel with good mechanical elasticity.

The present application provides a composite material, a flexible screen and a transparent substrate comprising the composite material, and a method for manufacturing a composite material of a foldable material. The composite material comprises an ultra-high molecular weight polyethylene (UHMWPE) and a hard coating material, a portion of the hard coating material penetrating into the UHMWPE. The UHMWPE has a highly porous structure of polyethylene, and the hard coating material is in a liquid form. The UHMWPE can be formed into a layer, another portion of the hard coating material being deposited on the layer. The UHMWPE layer has a thickness less than 2 µm, a tensile strength greater than 500 MPa, and the composite material has a thickness less than 5 µm, a tensile strength greater than 100 MPa. Furthermore, the entire composite material is creaseless after more than 200,000 folds.

The present invention relates to an absorbent composite web in which particles mixed with continuous microfilaments are arranged within the pores of a high-loft web, and to a method for forming the web, the web being applicable to filtration applications or (particularly when the particles are liquid absorbent particles) to absorbent hygiene products.

Insulating material (12) for electrical insulation of winding conductors (10) in electrical machines, consisting of an electrically insulating material, in particular PI, PAI, PEEK, which has a defined thickness and permittivity depending on a dielectric strength specified for the winding conductor (10), characterized in that highly porous microparticles (14) with microcavities to reduce the permittivity are introduced into the electrically insulating material (12).

The present invention relates to a powder comprising solid ceramic particles, characterized in that the particles have an internal porosity of at least 30%, preferably at least 45%, preferably at most 65%, and that the powder has a d10 grain size of at least 100 μm.

The present invention relates to the technical field of supercapacitors, and particularly to MOF-derived highly porous carbon aerogels and their application to supercapacitors. The MOF-derived highly porous carbon aerogels are obtained by pyrolytic decomposition of the MOF-ZX-5 material, and the MOF-ZX-5 material is [Zn(tppa)2Cl2]. The present invention uses a novel MOF-ZX-5 as a precursor to design and synthesize a novel carbon aerogel material (MOF-derived highly porous carbon aerogel) as an electrode material for supercapacitors. The MOF-ZX-5-derived highly porous carbon aerogels have high porosity, a large specific surface area, and excellent capacitance performance. Their use as supercapacitor electrode materials features high specific capacitance, power density, and energy density, as well as fast charge and discharge rates and excellent cycle stability.

The present invention relates to providing a dehumidifier apparatus with a desiccant wheel incorporating special adsorbent materials, which are highly porous, with surface area in a range of 500 m2 / g to 10000 m2 / g. These dehumidifier apparatuses having desiccant wheels incorporating special desiccant materials have demonstrated the ability to not only be regenerated well at temperatures of less than 100 degC to 120 degC, but have also shown greater than 15-25% higher adsorption performance (water removal), under similar operating conditions.

The invention relates to a high-porosity and high-connectivity porous medium material for intracellular delivery of therapeutic cells and a preparation method of the high-porosity and high-connectivity porous medium material. According to the microchannel, a porous polymer medium is prepared in a hard pipeline through a hard template method, and the specific preparation method comprises the following steps: stirring and mixing a thermosetting polymer and alcohol-soluble particles, performing high-temperature curing, removing the alcohol-soluble particles through absolute ethyl alcohol, forming a porous structure, and constructing the microchannel for intracellular delivery of animal cells. The channel with the porous medium material has excellent conductivity, and the connectivity between pore diameters can reach 98%. And the pore size distribution is wide and is between 5 microns and 50 microns. On the premise of effectively enhancing the permeability of cell membranes, good cell activity is ensured, efficient and safe intracellular delivery is realized, the highest delivery efficiency can reach 91.2%, the highest cell survival rate can reach 97.2%, and the net yield can reach 88.6%. Meanwhile, the method is simple in preparation process, convenient to operate and particularly suitable for the fields of gene therapy, drug development, cell research and the like.

A dehumidifier apparatus for low dew point application is disclosed, which deploys a desiccant wheel incorporating special adsorbent materials, which are highly porous, which are either crystalline or amorphous or both or multivariate, with surface area in a range of 500 m2 / g to 10000 m2 / g, and have an high uptake in a range of X to Y at 0.1-5% relative humidity (Rh), typically referred to as adsorbent materials with Type-1 isotherm. These dehumidifier apparatuses having desiccant wheels incorporating special materials have demonstrated the ability to not only be regenerated well at temperatures of less than 100 degC, but have also shown 15-25% higher adsorption performance (water removal), for achieving desired low dew point under similar operating conditions.

Provided herein are highly porous electrode structures made from natural materials and retaining natural architecture, which are highly permeable and find use in capacitive deionization desalination systems and methods. The porous electrode includes an electrode body including an architecturally intact carbonized organic material having a hydraulic permeability of at least 0.5×10−13 m2 as determined by application of Darcy's Law, and optionally having hierarchical porosity and a non-metal conductor attached to the electrode body. Also provided herein are methods of making the porous electrodes, desalination systems including the porous electrodes, and methods of desalinating water using the desalination systems including the porous electrodes.

The present invention provides a nanofiber membrane with dual-scale porosity, fabricated through a phase-separation electrospinning process. The membrane consists of interconnected inter-fiber and surface pores, enhancing air permeability, diffusion rates, and filtration performance. The method employs solvents with distinct evaporation rates to induce phase separation during electrospinning, resulting in a highly porous structure. The nanofiber membrane is applicable in air filtration, medical dressings, drug delivery systems, and diagnostic test strips, offering improved performance characteristics such as reduced pressure drop, enhanced diffusion, and increased sensitivity in diagnostics. The process enables scalable, cost-effective production with consistent fiber morphology.