271 results about "Porous network" patented technology

The invention relates to the technical field of functional polymer composite materials, and provides diatomite modified composite super absorbent and rapid absorbent resin and a preparation method thereof. The preparation raw materials of the diatomite modified composite high-water-absorption and rapid-water-absorption resin provided by the invention comprise acrylic acid, acrylamide, sodium hydroxide, N, N '-methylene bisacrylamide, ammonium persulfate and modified diatomite. The diatomite is modified by the silane coupling agent, the agglomeration problem of the diatomite is solved, the compatibility with organic monomers is improved, and the modified diatomite, acrylic acid and acrylamide are utilized to construct an organic-inorganic synergistic three-dimensional porous network structure, so that the resin has ultrahigh water absorption rate, rapid water absorption performance and good water retention stability. Meanwhile, the preparation method disclosed by the invention does not need nitrogen protection, has the advantages of simple process, controllable raw material cost and easiness in industrial mass production, and is suitable for multiple fields such as water-saving agriculture, soil moisturizing, landscaping and the like.

The invention relates to the technical field of flexible sensors, in particular to a gradient hierarchical porous structure flexible piezoresistive sensor and a preparation method thereof. The sensor is of a laminated structure and comprises an upper flexible packaging protection layer, a lower flexible packaging protection layer, a conductive fabric electrode and a middle piezoresistive sensing layer, and a limiting frame is arranged on the periphery of the sensor. The sensing layer is prepared by adopting a 3D printing ink direct writing technology, and adopted printing slurry takes silicone rubber as a matrix and is uniformly mixed with expanded conductive microspheres and conductive filler. The printing wires are stacked in order to form a macroscopic gradient porous network structure; after the expanded microspheres are subjected to in-situ foaming, micro closed pores are formed in the material, and a rough microstructure is constructed on the surface of the wire material, so that hierarchical multi-scale regulation and control of a conductive network are realized cooperatively, contact sites are increased remarkably, and the sensitivity of the sensor is further improved effectively. The flexible piezoresistive sensor prepared by the invention has the advantages of high sensitivity, wide pressure detection range and high linearity, and has the commercial values of simple preparation process, high repeatability, lower cost and the like.

The invention relates to a membrane electrode and application thereof in deuterium-enriched water, and belongs to the field of clean energy development and utilization. The membrane electrode comprises a proton exchange membrane, an anode catalyst and a cathode catalyst, the anode catalyst is an iridium / iridium oxide catalyst with a three-dimensional porous network structure, and the cathode catalyst is a platinum-ruthenium alloy catalyst. The preparation method comprises the following steps: coating one side of the N117 proton exchange membrane with the anode catalyst, coating the other side of the N117 proton exchange membrane with the cathode catalyst, and then performing hot pressing to prepare the membrane electrode. The method comprises the following steps: assembling a membrane electrode into an electrolytic cell, and electrolyzing water by using the electrolytic cell to realize deuterium enrichment. The membrane electrode and the electrolytic cell are reasonable in design, the preparation process is simple and controllable, and the obtained product is high in efficiency and long in service life when used for enriching deuterium and facilitates industrial application.

The invention provides a composite hydrogel for infectious bone defect repair and a preparation method thereof, and belongs to the technical field of bone defect repair, the composite hydrogel comprises a three-dimensional porous network structure hydrogel and a bioactive unit, and the bioactive unit is loaded in the three-dimensional porous network structure hydrogel; the hydrogel with the three-dimensional porous network structure is prepared from photo-crosslinked methacrylated silk fibroin and nano-hydroxyapatite; the bioactive unit comprises a strontium metal organic framework loaded with curcumin. According to the invention, the photo-crosslinked methacrylated silk fibroin provides excellent biocompatibility; as an ion / drug dual carrier, the strontium metal organic framework can continuously release strontium ions and bidirectionally regulate bone metabolism (promoting osteogenesis and inhibiting osteoclast), and the porous structure of the strontium metal organic framework can efficiently load a hydrophobic drug curcumin (Cur). Curcumin has strong antibacterial and anti-inflammatory functions; the nano-hydroxyapatite can obviously enhance the mechanical strength of the hydrogel.

The invention relates to the technical field of marine ecological engineering, in particular to a marine coral reef ecological restoration method based on a foamed aluminum base material, which comprises the following steps: preparing a modified foamed aluminum main body structure, constructing a modified bioactive surface layer, filling a modified phase change material capsule, and putting a restoration unit. According to the invention, the foamed aluminum main body structure provides a stable three-dimensional through porous network, and a natural reef habitat environment is simulated; a hydroxyapatite coating or a polymer layer constructed on the surface of the coral bone-imitating material remarkably improves the coral larva attachment and colonization efficiency through coral bone-imitating inorganic components or specific polypeptides respectively; the phase-change material capsules filled inside buffer water temperature fluctuation through phase-change latent heat, a stable micro-thermal environment is provided for coral growth, the functions of all the components are complementary and synergistic, foamed aluminum provides a carrier for surface functionalization, the surface active layer optimizes a biological interface, the internal temperature adjusting unit guarantees ecological suitability, and an efficient repairing system is formed. The coral reef ecological restoration effect is obviously improved.

The invention discloses a temperature-sensitive response type medical hydrophilic polyurethane intelligent slow-release foam, and relates to the technical field of medical materials, a foam matrix layer is of a three-dimensional porous network structure formed by hydrophilic polyurethane, pores are connected with one another, an intelligent response layer is compounded on the surface of the foam matrix layer and the inner walls of the pores, and the intelligent response layer is formed by compounding the intelligent response layer and the foam matrix layer. The composite intelligent response layer comprises a temperature-sensitive polymer network and a pH-sensitive functional group, the temperature-sensitive polymer network responds to temperature change to dynamically adjust the opening and closing state of pores, and the pH-sensitive functional group responds to an alkaline environment to release antibacterial components. The temperature-sensitive polymer network can dynamically adjust the opening and closing states of the pores: when the wound temperature rises, the hydrophobicity of the polymer is enhanced, the pores automatically shrink to reduce seepage evaporation, and when the temperature drops, the hydrophilicity is recovered, and the pores expand to accelerate discharge of exudate.

The invention is applicable to the technical field of new energy materials and water treatment, and provides solar-driven multifunctional composite hydrogel and a preparation method and application thereof, the multifunctional composite hydrogel comprises dual-network hydrogel, a nanofiber skeleton and functional particles; the double-network hydrogel is formed by interpenetrating and cross-linking a polyelectrolyte hydrogel and a temperature-sensitive hydrogel; the functional particles are loaded in a three-dimensional porous network structure formed by the double-network hydrogel and the nanofiber skeleton. When the device floats on the surface of a water body, efficient solar interface evaporation water production, stable power generation based on the water photovoltaic effect and efficient adsorption removal of nitrogen and phosphorus nutritive salt in the water body can be synchronously achieved under illumination, and therefore algae growth is inhibited. According to the invention, the integrated collaborative management of water collection, energy conversion and ecological restoration is realized, the preparation process is simple, the environmental adaptability is high, and an innovative scheme is provided for solving the distributed water-energy supply and ecological environment problems in coastal, island and other regions.

This invention belongs to the field of functional polymer composite materials technology, and more specifically relates to a titanium oxide cluster composite fiber membrane with broad-spectrum photoresponse, its preparation method, and its applications. The preparation method includes: using 3-fluorocatechol and titanate as reactants, a solvothermal reaction is carried out under an inert atmosphere to obtain trifluorocatechol-modified titanium oxide cluster crystals; then, these crystals are dissolved with thermoplastic polyurethane particles in an organic solvent to prepare a composite spinning solution, which is then electrospun and dried to obtain the composite fiber membrane. In this fiber membrane, the titanium oxide clusters are uniformly dispersed at the nanoscale, forming a three-dimensional porous network structure with a diameter of 100-1000 nm, exhibiting broad-spectrum strong absorption (300-1000 nm), superhydrophobicity, and excellent photothermal properties. This invention effectively solves the problem of inorganic nanoclusters agglomeration in organic matrices through surface modification, achieving synergistic antibacterial effects through photothermal and photocatalytic processes, and has broad application prospects in medical protection, intelligent thermal management textiles, and environmental purification.

The invention provides a method and device for separating gas by using gas hydrate rapidly generated in water-absorbent resin, and belongs to the field of hydrate method storage and transportation and gas separation, and the device comprises a gas storage module, a gas treatment module, a gas hydrate generation module, a water storage module, a surfactant storage module, a water-absorbent resin storage and treatment module and a hydrate transfer module. The characteristic that the gas-liquid contact area can be greatly increased by a porous network structure formed in the swollen water-absorbent resin is fully utilized, an efficient channel is provided for gas diffusion, the diffusion rate of gas in water is increased by utilizing the surfactant, the nucleation and growth rate of the hydrate is increased, and the energy consumption cost required by a traditional stirring method is reduced. The generated hydrate can be directly sealed in water-absorbent resin and can also be transferred for other purposes.

The invention belongs to the technical field of copolymers and electrochemical application thereof, and particularly relates to a flexible copolymer with electrochromism and electrochemical energy storage performance and a preparation method and application thereof. The preparation method of the flexible copolymer with electrochromism and electrochemical energy storage performance comprises the following steps: adding 9-fluorenylformic acid and 3-bromo-4-methylthiophene into BFEE, and carrying out polymerization by adopting an electrochemical workstation, so as to prepare PBMTh-co-PFCA on a working electrode. According to the flexible copolymer with electrochromism and electrochemical energy storage performance as well as the preparation method and application thereof, the preparation method is reasonable in design and simple and convenient to operate. The flexible copolymer disclosed by the invention is PBMT-co-PFCA, and has mutually communicated porous network structures, so that the contact area is increased. The PBMTh-co-PFCA material disclosed by the invention is used for preparing ESD (Electro-Static Discharge), so that the electrochemical response and the charge storage capacity are remarkably improved.

The invention discloses an electronic skin capable of realizing non-inductive, continuous and sensitive motion monitoring, and belongs to the field of flexible electronics and biomedical engineering. The electronic skin is mainly prepared from sodium alginate and acrylamide to form porous network gel, and the porous network gel is cross-linked to prepare the original porous base electronic skin; preparing solid-like coating paint from silicon dioxide nanoparticles, silicone oil and epoxy resin; the solid-like coating paint is uniformly sprayed on the surface of the original porous-based electronic skin through a spraying technology, and is cured to form the solid-like coating modified electronic skin. The electronic skin with the specific formula and thickness is prepared, and personalized, low-cost, portable, wireless, non-inductive, continuous and sensitive motion monitoring can be achieved.

The invention discloses a backing material, a preparation method thereof and a backing assembly. The backing material comprises a three-dimensional porous network framework formed by butadiene styrene rubber, pores of the three-dimensional porous network framework are filled with resin, and the resin and the three-dimensional porous network framework form an interpenetrating network structure. According to the backing material provided by the invention, the sound attenuation performance of the material is remarkably improved (under the frequency of 2.25 MHz, the sound attenuation performance can reach 140-251 dB / cm), and the hardness of the material is remarkably improved (flexible regulation and control can be realized between 55 D and 70 D).

The present application relates to a kind of liquid metal / MXene / sodium alginate / polyacrylamide composite hydrogel material and its preparation method and application, the hydrogel material includes liquid metal microsphere, sodium alginate and polyacrylamide form hierarchical porous network and flaky MXene.Preparation step includes: S1.add liquid metal to aqueous solution, ultrasonic dispersion obtains dispersion liquid;S2.dispersion liquid is added to sodium alginate solution, and ultrasonic sodium alginate is obtained to liquid metal water solution;S3.acrylamide is dissolved in deionized water, then sodium alginate is added to liquid metal water solution, then crosslinking agent, initiator and MXene are added, and stirring is uniform;S4.pour into mould heating and form hydrogel.The composite hydrogel material prepared by the present application has the advantages of high tensile rate, strong electromagnetic shielding performance, etc., and can be used as electronic skin for electromagnetic shielding, human health monitoring, man-machine communication, soft robot.

The invention provides an energetic composite material with a micro combustion chamber structure and a preparation method thereof, and the method comprises the following steps: step 1, preparing a composite combustion catalyst: taking a two-dimensional nanosheet material as a carrier, and realizing uniform loading of a nano catalyst through an interface engineering method to obtain the composite combustion catalyst; 2, constructing a three-dimensional porous network structure: constructing the composite combustion catalyst obtained in the step 1 into a porous network combustion catalyst with the three-dimensional porous network structure; and 3, preparing the energetic composite material: adding an oxidizing agent, energetic explosive powder and metal powder into an adhesive, stirring to form energetic material slurry, adding the energetic material slurry into the porous network combustion catalyst obtained in the step 2, and carrying out vacuum impregnation and curing for 12-48 hours to obtain the energetic composite material with the micro combustion chamber structure. The porous network combustion catalyst is preformed, so that the dispersion state of the nano-catalyst is effectively controlled, and the catalytic effect of the nano-catalyst is improved.

The invention relates to the technical field of organic silicon materials, in particular to a light-weight high-flame-retardant organic silicon composite material and a preparation method thereof. The composite material comprises the following components in parts by weight: 100 parts of an organosilicon polymer, 15-60 parts of a composite flame retardant, 5-40 parts of a light filler with a hollow structure, 10-50 parts of a reinforcing filler, 0.5-5 parts of a cross-linking agent and 0.1-2 parts of a catalyst, and a three-dimensional porous network structure constructed by the light filler with the hollow structure and the composite flame retardant is formed in the composite material. The invention provides an organic silicon composite material with low density, high flame retardance and good mechanical property and a preparation method thereof.

The application belongs to the technical field of composite micro / nano fiber materials, and particularly relates to a polyimide and polymer composite micro / nano fiber nonwoven fabric, a preparation method and application thereof. The nonwoven fabric is a three-dimensional porous network composed of composite micro / nano fibers with a skin-core structure; the skin layer material of the composite micro / nano fiber is polyimide, and the core layer material is a polymer; the polymer is at least one of polyacrylonitrile, polyvinylidene fluoride and polyarylene ether. The preparation method is to prepare polyimide spinning solution and polymer spinning solution respectively, then perform coaxial electrospinning, and then perform post-processing. The polyimide and polymer composite micro / nano fiber nonwoven fabric has excellent chemical corrosion resistance, excellent mechanical properties, excellent thermal stability, low cost, uniform material compounding, high porosity and high efficient cyclic adsorption performance, can efficiently remove heavy metal ions and organic dyes in water, and has a wide application prospect in the field of water treatment.

The present application relates to the technical field of biosensor, especially to a glucose sensor based on composite film and a preparation method thereof, after fixing layered MoS2 semiconductor material on a substrate, the present application continues to prepare ion gel film on the substrate, then modifies glucose oxidase on the surface of the ion gel film, after incubation and fixation, modifies a layer of Nafion film on the surface of the ion gel film, because glucose oxidase oxidizes and decomposes glucose to generate protons, with the selective proton passing effect of the Nafion film, the protons pass through the Nafion film to the porous network structure formed by the ion gel film and the layered MoS2 semiconductor material, and cooperate with the cations in the ion gel film to attract more carriers, and form a double-layer structure on the surface of MoS2, cooperate with the current multiplication effect, improve the transmission efficiency of the carriers, and improve the sensitivity of the sensor.

The invention discloses double-response hydrogel as well as a preparation method and application thereof. The double-response hydrogel comprises a three-dimensional porous network hydrogel matrix, and tea polyphenol and nano silicon nitride which are loaded in the hydrogel matrix, the three-dimensional porous network hydrogel matrix is prepared from o-nitrobenzene grafted hyaluronic acid and carboxyl phenylboronic acid modified methyl chitosan. According to the hydrogel disclosed by the invention, in a low-pH / high-ROS microenvironment of a diabetic periodontitis focus, boric acid ester bonds are broken, tea polyphenol is released, and the tea polyphenol plays an anti-inflammatory role by efficiently removing active oxygen and inhibiting inflammatory factors; meanwhile, the Schiff base bond is dissociated to release the nano silicon nitride, and the nano silicon nitride significantly promotes angiogenesis and osteogenic differentiation and accelerates bone defect repair by activating a redox signal, inducing cell autophagy, regulating metabolic reprogramming and other pathways.

The application discloses a preparation method of a CoSe2 modified bifunctional porous carbon cloth, and the CC@CoSe2 obtained after cleaning, annealing and selenization is used as a carrier material. First, the CC@CoSe2 / S composite sulfur-containing positive electrode material is prepared by depositing sulfur on the CC@CoSe2 porous network in a plasma chemical vapor co-deposition manner. Second, the CC@CoSe2 is used as the carrier material, and the metal lithium is deposited on the CC@CoSe2 porous network in an electrodeposition manner, so that the CC@CoSe2 / Li composite metal lithium negative electrode material is prepared. Finally, the CC@CoSe2 / S composite sulfur-containing positive electrode material and the CC@CoSe2 / Li composite metal lithium negative electrode material prepared in the foregoing are used as the positive electrode and negative electrode materials of a lithium-sulfur battery, are applied to a flexible lithium-sulfur full battery, and are used for assembling a soft package battery to test electrochemical performance. The application achieves the synergy of high sulfur loading and high sulfur utilization, and constructs the lithium-sulfur full battery with high packing density, high sulfur surface loading and high energy density.

A preparation method of a three-dimensional self-supporting phenolic resin derived carbon (at) carbon nanotube sponge comprises the following steps: step 1, injecting a ferrocene and dichlorobenzene carbon source solution into a reaction furnace in a hydrogen / argon mixed atmosphere to obtain a carbon nanotube sponge; step 2, dissolving resorcinol and hexamethylenetetramine in the deionized water; cutting a carbon nanotube sponge into proper small blocks, putting the small blocks into the mixed solution, transferring the small blocks into an oil bath pan, carrying out stirring heat treatment / autoclave heat treatment for a period of time, standing overnight, and cooling to room temperature, so as to obtain resorcinol and hexamethylenetetramine prepolymer coated carbon nanotube sponge; step 3, taking out the resorcinol and hexamethylenetetramine prepolymer coated carbon nanotube sponge, washing, and then freeze-drying to maintain the three-dimensional porous network structure; and finally, carrying out high-temperature annealing treatment to obtain the three-dimensional self-supporting phenolic resin derived carbon-coated carbon nanotube sponge. The integrated self-supporting composite electrode is successfully constructed through a three-dimensional network in-situ synthesis process.

The invention relates to the technical field of surface modification of biological materials, and particularly discloses a nano-porous PEEK / ZIF-8 material as well as a preparation method and application thereof. According to the preparation method, sulfonation treatment and plasma treatment are carried out on a polyether-ether-ketone sheet, a bionic nano-porous fiber network structure is formed on the surface of the polyether-ether-ketone sheet, on the basis, ZIF-8 nano-particles grow in situ, and meanwhile, the original nano-porous network structure is reserved; through the construction of a bionic nano porous fiber network structure and the in-situ growth of ZIF-8, the oxidation resistance of the material is synergistically enhanced, and the in-situ growth ZIF-8 can also endow the nano structure with certain drug delivery ability, so that the nano structure and the drug release coating synergistically repair bone defects under special pathological conditions.

The invention provides curcumin-nano-selenium modified Chinese chestnut starch with an irregular granular porous network structure, and belongs to the technical field of starch processing. The preparation method comprises the following steps: mixing a sodium selenite solution and a curcumin solution, and reacting under an alkaline condition to obtain a curcumin-nano-selenium solution; carrying out heat-moisture treatment on the starch suspension, and then freeze-drying to obtain heat-treated starch; preparing the heat-treated starch into a suspension 1, mixing the suspension 1 with the curcumin-nano-selenium solution, performing a constant-temperature oscillation reaction under a dark condition, and after the reaction is finished, cooling and drying to obtain the modified starch. According to the invention, a spherical aggregate of natural starch is reconstructed into an irregular granular porous network structure, so that the freeze-thaw stability, retrogradation stability, oxidation resistance and digestion resistance of the starch are remarkably improved. Moreover, based on a mouse experiment result, the modified starch has a good blood sugar control effect.

The invention discloses high-strength anti-aging styrene-butadiene rubber and a preparation method thereof, and belongs to the field of synthetic rubber modification. Porous reticular ZnO aggregated by 6.5 nm ZnO nanoparticles is synthesized by a hydrothermal method by using a composite surfactant of PVP K30 and polyvinyl alcohol 600 in a ratio of 1: 1, and the ZnO is not dried after synthesis so as to avoid aggregation; the preparation method comprises the following steps: carrying out surface modification with a silane coupling agent KH560, carrying out segmented temperature control mixing with styrene-butadiene rubber, carbon black N330 and other assistants, and carrying out pre-crosslinking and gradient heating vulcanization to obtain a finished product. A porous net structure allows rubber slurry to fully permeate, the contact area of the filler and a matrix is increased, and efficient reinforcement is realized by low mixing amount; znO nano-particles can convert ultraviolet light into visible light, and the aging resistance is enhanced by matching with the scattering effect of a porous structure; the coupling agent modifies and optimizes the interfacial compatibility, the problem that agglomeration and performance of a traditional filler are difficult to consider is solved, and the finished product has high strength and excellent aging resistance and meets the requirements of tires, sealing elements and other scenes.

The invention relates to the technical field of environmental engineering and water body remediation, in particular to a river and lake sediment covering material capable of cooperatively controlling phosphorus and fluorine and a method and application thereof. The covering material provided by the invention comprises a base material, an active component and a binder, the matrix material adopts modified clay, is of a porous net structure, and provides stable physical support and adsorption basis; nano-hydroxyapatite and ferric oxide are added into the active component, are dispersed in pores of the matrix and are respectively used for efficiently adsorbing phosphorus and fluorine; the binder is an environment-friendly polymer binder and wraps the surfaces of the matrix and the active component to form a continuous bonding layer, so that the mechanical strength and durability of the material are enhanced. According to the covering material provided by the invention, through specific adsorption of the nano-hydroxyapatite to phosphorus and efficient adsorption of the iron oxide to fluorine, release of phosphorus and fluorine in sediments can be inhibited at the same time, and the problems that a common covering material in the prior art is single in function, low in adsorption capacity and poor in stability are solved.

An aerogel-based floatable self-powered water-electrolysis hydrogen generation system is disclosed. More specifically, when an aerogel contacts an electrolyte solution, an electric double layer (EDL) is formed through a nanometer-sized porous network structure inside the aerogel, and electroosmosis is induced in the formed electric double layer to generate an electric potential without receiving external power. In this regard, the aerogel is carbonized to ensure electrical conductivity, and an upper surface thereof is subjected to fluorine-rich surface-functionalization (FOTS treatment) to generate a local electric field, thereby inducing ion migration inside the pores in a specific direction and maximizing the formation of the electric double layer. Accordingly, the system can obtain significantly improved electrical output compared to the conventional water-based energy harvesting technology, and can generate hydrogen in a stable and highly efficient manner by directly using the generated power in a water-electrolysis reaction.

The invention discloses a polysaccharide aldehyde modification method based on a plasma technology, relates to the technical field of biological material modification, and aims to solve the problems of environmental pollution, harsh reaction conditions and complex product purification in the conventional chemical oxidation method. Comprising the following steps: S1, preparing a polysaccharide solution; dissolving polysaccharide in a solvent, and stirring until the polysaccharide is completely dissolved to obtain a homogeneous polysaccharide solution; and S2, plasma in-situ oxidation treatment. In an inert gas atmosphere environment, plasma is generated by using a coaxial dielectric barrier discharge device, and active substances of the plasma directly act on a polysaccharide solution, so that an aldehyde group is introduced to a polysaccharide molecular chain, and an aldehyde polysaccharide solution is obtained. And S3, freeze-drying and forming. And freeze-drying the obtained aldehyde polysaccharide solution to obtain the aldehyde polysaccharide solid material with the three-dimensional porous network structure. The method is simple and convenient to operate, easy to popularize, simple in equipment, short in process, free of complex purification steps and beneficial to laboratory and large-scale production and application.

This invention relates to the fields of bio-based new materials and daily cosmetics, and discloses a flexible biodegradable facial mask substrate based on edible fungi, its method, and its application. The facial mask substrate uses edible fungi as raw material. Through wet pulping, water bath modification, and centrifugal separation to remove water-soluble impurities, a wet precipitate rich in insoluble fibers is obtained. This precipitate is then compounded with carboxymethyl cellulose, glycerol, and water to form a slurry, which is then cast and dried at a constant temperature to obtain a flexible film with a porous network structure. This method utilizes carboxymethyl cellulose to construct a three-dimensional network framework and glycerol as a plasticizer, giving the substrate good flexibility, wet strength, and bioactivity, while overcoming the problems of traditional edible fungi film materials such as easy moisture absorption and brittleness. The resulting facial mask substrate is safe and environmentally friendly, and can be completely biodegraded in soil or composting environments. It is suitable for applications such as facial masks, eye masks, transdermal drug delivery carriers, and medical dressings.

The invention relates to the technical field of functional carbon materials, in particular to a preparation method and application of loofah sponge-based biomass charcoal with a three-dimensional porous network structure, and the preparation method comprises the following steps: step 1, performing pre-oxidation treatment on a cleaned and dried loofah sponge material; step 2, carrying out dipping treatment on the loofah sponge material subjected to pre-oxidation treatment in a potassium hydroxide solution and drying the loofah sponge material; step 3, performing high-temperature carbonization treatment on the soaked and dried loofah sponge material in an inert atmosphere; and step 4, carrying out acid pickling and water washing on the carbonized loofah sponge material until the loofah sponge material is neutral, so as to obtain the loofah sponge-based biomass charcoal material with the three-dimensional porous network structure. The method is simple in process, controllable in cost and environmentally friendly, and the prepared porous carbon material has high specific surface area, developed multistage pores and high adsorption performance and has wide application prospects in the field of sewage treatment.

The invention discloses a graphene gel loaded magnesium-nickel hydrogen storage blocky material and a preparation process thereof, and belongs to the field of hydrogen storage materials. The preparation process comprises the following steps: firstly, preparing magnesium-nickel nano alloy powder by a high-frequency plasma (RF) dynamic sintering method, and secondly, preparing the graphene gel loaded magnesium-nickel hydrogen storage blocky material by a spark plasma rapid sintering (SPS) method. According to the graphene gel loaded magnesium-based hydrogen storage blocky material provided by the invention, a unique porous network structure of the three-dimensional graphene gel is utilized, and a uniformly dispersed, nanocrystallization confinement and strong interface bonding supporting frame is provided for magnesium-nickel alloy, so that the hydrogen storage capacity, hydrogen absorption and desorption dynamic performance and cycling stability of the material are remarkably improved; meanwhile, the block body density and the heat conduction efficiency are relatively high, and the storage and the transportation are easy.

The utility model discloses a zinc air cell composite electrode device based on nonmetal PNC catalyst, including electrode anode, the inside of electrode anode is equipped with the electrode cathode of adaptation, be equipped with insulating seal layer between electrode anode and electrode cathode, the inside of electrode cathode respectively includes zinc powder, zinc electrode layer and carbon skeleton, zinc electrode layer and carbon skeleton evenly distribute in the inside of electrode cathode, the utility model discloses a prevent seepage layer and carbon cloth and catalyst layer are set up in the inner layer structure of electrode anode and electrode cathode, and have catalytic composite layer between prevent seepage layer and carbon cloth to utilize the adhesive bonding structure in catalytic composite layer, promote carbon matrix and catalyst layer mix to form the high stability porous network electrode structure with electrode cathode combination under the catalytic layer cooperation of this composite structure, and have the component with high catalytic activity.