146results about How to "Many reaction sites" patented technology

The invention discloses a preparation method of a sodium-ion battery cathode material Na3V2(PO4)3. The method comprises the following steps: (1) mixing a sodium salt, a vandic salt, phosphate, a complexing agent, a high-molecular compound and a solvent to obtain a Na3V2(PO4)3 spinning solution; (2) carrying out electrostatic spinning on the Na3V2(PO4)3 spinning solution to obtain a Na3V2(PO4)3 spinning precursor; and (3) collecting the Na3V2(PO4)3 spinning precursor, carrying out thermal treatment on the Na3V2(PO4)3 spinning precursor in an inert atmosphere and cooling the Na3V2(PO4)3 spinning precursor to obtain the sodium-ion battery cathode material Na3V2(PO4)3. According to the sodium-ion battery cathode material Na3V2(PO4)3 prepared by the method disclosed by the invention, high-capacity charging and discharging of the battery can be realized; and the cycle stability of the battery can be improved.

The invention provides a thermosetting resin composition as well as a prepreg, a laminated board and a circuit carrier containing the same. The thermosetting resin composition comprises thermosetting resin, a laser direct forming additive, an inorganic filler, and a silane coupling agent with 2-3 groups capable of being hydrolyzed at each of two ends of a molecular chain. The laser direct forming additive is added in the thermosetting resin composition provided by the present invention to ensure that a circuit can be formed on thermosetting resin after laser irradiation and metallization, the CTE of the composition can be reduced and the absorption of laser energy by a matrix can be enhanced by adding the inorganic filler and the silane coupling agent with 2-3 groups capable of being hydrolyzed at each of the two ends of the molecular chain, the activation rate of an LDS auxiliary agent is effectively improved, the attachment and the sedimentary thickness of the matrix to copper are obviously enhanced at the same time, and three types of components mutually cooperate with the thermosetting resin to ensure that the thermosetting resin composition has a low coefficient of thermal expansion, thereby making the prepared circuit carrier have relatively good quality of signal transmission.

The invention belongs to the field of energy sources, and particularly relates to a carbon-based composite fuel cell cathode oxygen reduction catalyst and a preparation method thereof. The carbon-based composite fuel cell cathode oxygen reduction catalyst disclosed by the invention is a molybdenum ion-doped mesoporous carbon-graphene complex and is prepared by the following steps: firstly, synthesizing a mesoporous carbon-graphene precursor with a soft template method; carrying out in-situ doping on molybdenum ions, and then burning in an argon atmosphere. The method disclosed by the invention is simple in process and easy to operate; the synthesized material has an ordered mesoporous structure, more active sites, and relatively good electron transport performance; the mesoporous carbon-graphene complex is a novel effective carbon carrier; and inorganic elements can be doped or other non-noble metal catalysts can be loaded, so that the carbon-based composite fuel cell cathode oxygen reduction catalyst can be applied to the field of various energy sources.

The invention discloses a preparation method of a sulfur-doped carbon nitride photocatalyst. The preparation method comprises the following steps: S1, calcining thiourea at 500 DEG C to 650 DEG C and keeping warm for 2h to 6h, so as to obtain sulfur-doped graphite carbon nitride; S2, grinding the sulfur-doped graphite carbon nitride obtained by the step S1 into powder; calcining at 400 DEG C to 550 DEG C again and keeping heat for 1h to 4h. The invention further discloses the sulfur-doped carbon nitride photocatalyst prepared by the preparation method of the sulfur-doped carbon nitride photocatalyst and application of the sulfur-doped carbon nitride photocatalyst. The sulfur-doped carbon nitride photocatalyst prepared by the invention has larger specific surface area and better photocatalytic activity; the steps of the preparation method are simple to operate and the catalyst has high activity and good stability.

The invention relates to a method for preparing nano calcium peroxide by chemical modification. The method comprises the following steps: adding a certain amount of dispersing agent into a prepared calcium salt water solution, and mixing under ultrasonic conditions to prepare a bottom solution; slowly and dropwisely adding oxydol with a certain concentration into the continuously stirred bottom solution, reacting in an ice water bath, and continuing the reaction for 15-20 minutes after the dropwise addition is completed; and centrifugating the mixed solution, repeatedly washing the precipitate with deionized water and isopropanol, and drying in a vacuum drying oven for 12-24 hours to obtain the nano calcium peroxide. The method has the advantages of simple technique, mild reaction conditions and short reaction time; the dispersing agent added in the reaction process is nontoxic and harmless, and thus, no pollutant is generated in the production process; and the prepared product has favorable properties, and the particle size of the nano calcium peroxide is 100nm or so. The invention provides a simple effective new way for preparing nano calcium peroxide.

The invention belongs to the technical field of preparation of cell electrodes and discloses a preparation method and application of a Ag / AgBr@TiO2 / CA electrode. The preparation method of the Ag / AgBr@TiO2 / CA electrode comprises the steps of preparing carbon aerogel; preparing butyl titanate sol gel; loading and calcining the butyl titanate sol gel; and loading and calcining Ag / AgBr. The invention also discloses an application of the prepared Ag / AgBr@TiO2 / CA electrode to water treatment. The Ag / AgBr@TiO2 / CA electrode prepared by the invention has the advantages of high porosity, large specific area, high conductivity, controllable appearance and the like and also has good photoctalytic activity and sterilization performance.

The invention discloses a hexagonal boron nitride modified graphitized carbon nitride composite optical catalyst as well as a preparation method and application thereof. According to the composite optical catalyst, by taking graphitized carbon nitride as a carrier, laminated hexagonal boron nitride modifies the graphitized carbon nitride carrier. The preparation method comprises the following steps: mixing the hexagonal boron nitride with a graphitized carbon nitride precursor; and calcining the mixed precursor to obtain the hexagonal boron nitride modified graphitized carbon nitride composite optical catalyst. The hexagonal boron nitride modified graphitized carbon nitride composite optical catalyst disclosed by the invention has the advantages of being environmentally friendly, fully free of metal doping, large in specific surface area, high in photoproduction electron-hole separating efficiency, high in optical catalytic activity, good in stability, corrosion-resistant and the like. The preparation method has the advantages of being simple, low in cost of raw materials, less in energy consumption, easy to control conditions and the like. The composite optical catalyst disclosed by the invention is used for degrading dye wastewater and has the advantages of being simple in application method, stable in optical catalytic performance, high in corrosion resistance, high in dye wastewater degrading efficiency.

The invention relates to a broad-spectrum antibacterial wound nursing membrane and a preparation method thereof and belongs to the field of biological materials. The broad-spectrum antibacterial wound nursing membrane takes degradable aliphatic polyester and degradable natural polymers as main raw materials, a non-dissolving type cation antibacterial agent is added, the antibacterial agent and a polymer undergo chemical crosslinking effects, so that antibacterial groups are bonded to a spinning matrix, and an antibacterial nanofiber membrane is prepared through an electrostatic spinning method to be used for the wound nursing membrane. The wound nursing membrane has broad-spectrum antibacterial property, has obvious killing and inhibiting effects on gram-positive bacteria, gram-negative bacteria, saccharomycetes and fungi in an infection period and can effectively inhibit bacterial infection to the wound part; an antibacterial mechanism is cation antibiosis, the wound nursing membrane has low drug resistance, and a non-dissolving type antibacterial agent has a lasting antibacterial effect. Besides, the wound nursing membrane has excellent biocompatibility, mechanical property, breathability and water absorption property. The broad-spectrum antibacterial wound nursing membrane can serve as a wound nursing membrane.

The invention provides a preparation method of water-soluble fluorinated graphene. The method comprises the steps of providing graphene oxide; dispersing the graphene oxide into deionized water to form a graphene oxide solution, then adding hydrofluoric acid and concentrated nitric acid into the graphene oxide solution, carrying out a reaction for 5-30 hours, and controlling the temperature of the reaction solution to be 150-200 DEG C; after the reaction, evaporating the product to dry to obtain the water-soluble fluorinated graphene. The preparation method is simple in technology and low in cost; the obtained water-soluble fluorinated graphene product has better dispersity.

The invention relates to an autotrophic denitrification advanced denitrification device. The device comprises an autotroph reactor, a water distribution pipe, a water inlet pipe and a backwashing water inlet pipe which are arranged at the lower part of the reactor, and a water outlet pipe arranged at the upper part of the reactor, wherein the interior of the autotroph reactor sequentially comprises a water distribution layer and a composite filler layer formed by a sulfur filler layer and a suspension filler layer along a water flow direction. The invention also relates to an autotrophic advanced denitrification method. The method makes a treatment bed layer in an expanded state through controlling a water inlet flow rate, reduces bed layer resistance, makes reaction sites increased, and improves denitrification efficiency.

The invention provides a method for adopting solid phase grafting for preparing grafted polyethylene from ultra-high molecular weight superfine polyethylene and grafted polyethylene prepared through the same. The effective grafting rate of a grafting monomer is larger than 0.5%, a basic polymer is polyethylene, the polyethylene is powder and spherical or spherical-like granulates, and the average grain diameter is 10-100 micrometers; the standard deviation is 2-15 micrometers, and the bulk density is 0.1-0.3 g / mL; the viscosity average molecular weight (Mv) of the polyethylene is larger than 1*10<6>. The method is simple in technology, low in cost and easy to implement, and promotes industrial production. The thermal property, mechanical property, polarity and the like of the grafted polyethylene are obviously improved, and the original good performance of the polyethylene is kept.

The invention discloses a supercritical fluid technology-based carbon fiber surface grafting method, and relates to a carbon fiber surface modifying method. The purpose of the invention is to solve the problems of few reaction sites of grafted micro-molecular substances, easy cross-linking of graft copolymers, and low bonding strength between modified carbon fibers and resin of present carbon fiber surface modifying methods. The method disclosed in the invention comprises the following steps: removing an epoxy coating layer on the surface of the carbon fibers; 2, oxidizing the carbon fibers; 3, carrying out acylchlorination on the carbon fibers; and 4, grafting the surface of the carbon fibers with melamine. The surface of the carbon fibers is grafted with melamine, and the quantity of reaction sites is large, so convenience is provided for a next step grafting reaction. The molecular weight of melamine is small, and melamine and polymers are difficult to cross-link, so melamine has very good dispersion, and undergoes a grafting reaction with good homogeneity on the surface of the carbon fibers in order to facilitate improvement of the interface performances of a composite material. The method is used for surface modification of the carbon fibers.

The invention relates to a preparation method of a high-specific-capacity lithium-rich anode material, belongs to the field of chemical power source material preparation and lithium ion battery anode materials. The preparation method comprises the following steps of dissolving manganese acetate, nickel acetate, cobaltous acetate and lithium acetate in a solvent, stirring the manganese acetate, the nickel acetate, the cobaltous acetate and the lithium acetate so as to obtain an acetate solution which is uniformly mixed, carrying out magnetic stirring and evaporating under heating of a water bath until a mixing liquid is thick colloid, and placing the mixing liquid in a drying box to dry so as to obtain precursor powder; warming the dried precursor powder to calcine twice, and reducing to room temperature by adopting a furnace cooling manner so as to obtain a multi-element lithium-rich material Li1.2Mn0.54Ni0.13 Co0.13O2. A material prepared by the preparation method provided by the invention is high in bulk phase crystallinity, the grain diameter of a material is small, the distribution is uniform, a transition metal element proportion approaches to a theoretical value, a synthesis step is simple, the material is easy for mass production, synthesizing nondeterminacy factors in a process are less, the characteristics give the high specific capacity and the cycling stability for the material, and an electrochemical property of the material is excellent.

The invention belongs to the technical field of nano material preparation, in particular to a g-C3N4 / MXene / CuZnIn2S4 nano composite photocatalyst and a preparation method thereof. CuZnIn2S4 which is taken as a widely-used photocatalyst can improve the photocatalytic activity by adjusting the morphology and increasing the number of exposed active sites; and MOF heterojunction has high specific surface area and rich pore structure, and can solve the problem of flexible coordination between complex multiphase metals and ligands and provide favorable conditions for the construction of efficient photocatalysts. The preparation method of the composite photocatalyst includes introducing g-C3N4 and MXene into the CuZnIn-MOF heterojunction; and vulcanizing to obtain a target product, namely, the g-C3N4 / MXene / CuZnIn2S4 nano composite photocatalyst. The method has the advantages that the CuZnIn2S4 prepared by taking MOF as a template has an ultra-large specific surface area, provides more loadingsites for coupling of the CuZnIn2S4 and the g-C3N4, and thus the exposure number of the active sites is increased, and the introduction of the MXene can obviously improve the conduction capability ofcarriers, so that the photocatalytic activity of the photocatalyst is obviously improved.

The invention provides a bio-adsorbent for treating dye wastewater and a preparation method therefor and application thereof and belongs to the technical field of dye wastewater treatment. The bio-adsorbent contains the raw materials in parts by weight: 35-40 parts of edible fungus waste, 22-30 parts of bamboo shoot waste, 20-25 parts of pomelo peel and 5-12 parts of tea leaves. The preparation method comprises the steps of pretreating the raw materials, then, adding aqueous alkali into the pretreated raw materials, carrying out stirring, washing an activated product with water until the activated product is neutral, drying the washed activated product, then, adding a citric acid solution to soak the activated product, carrying out heating stirring, washing a modified product with water until the modified product is neutral, drying the modified product, then, adding an alcoholic solution to soak the modified product, carrying out ultrasonic wave assisted treatment, washing a product with water until the product is neutral, and drying and crushing the product, thereby obtaining the bio-adsorbent for treating the dye wastewater. According to the application of the bio-adsorbent in the treatment of the dye wastewater, the bio-adsorbent is added into a dye aqueous solution for oscillatory reaction, and filtering separation is carried out, so as to complete adsorption removal for the dye aqueous solution. According to the bio-adsorbent for treating the dye wastewater and the preparation method therefor and the application thereof, the problem of environmental pollution is solved, the resourcing of the wastes is realized, and the aim of treating wastes with wastes is achieved.

The invention belongs to the technical fields of polymeric composite materials and sewage treatment, and concretely relates to a floatable magnetic polymeric composite material, and a preparation method and an application thereof. The composite material is composed of a composite of a magnetic nano-iron oxide compound or a magnetic nano-iron sulfide compound and a nano-zinc sulfide or nano-zinc sulfide compound. Above magnetic nano-materials make the composite material directly recovered by an iron screen after being used in order to fundamentally remove heavy metals, so the composite materialcan be easily recycled; nano-zinc sulfide or its composite material has a large specific surface area, so the response range of the composite material to visible lights is widened, and the separationof photogenerated electrons and holes is promoted; and the composite material can float on the water surface and fully utilize the sunlight and oxygen in air, so the composite material has strong ability to photocatalytically degrade organic pollutants. The composite material has the advantages of simple preparation method, low cost and wide application range, and can be directly biodegraded in the environment after being used.

The invention discloses inorganic-cellulose composite carbon aerogel and a preparation method thereof. The inorganic-cellulose composite carbon aerogel is prepared by carbonizing modified cellulose aerogel in the presence of an inert gas, and by implementing a hydrothermal synthesis method with a mixed liquid with transition metals. The inorganic-cellulose composite carbon aerogel disclosed by theinvention has the characteristics of no toxicity, a 3D network structure, a high specific surface area, rich porosity, rich reaction sites, good conductivity, and the like, in addition has certain mechanical strength, and can be applied to fields such as electrode materials for energy storage, electric catalysts, photocatalyst, multi-phase catalysts, adsorption and water treatment.

The invention discloses a lithium air battery cathode material and a preparation method thereof, and a lithium air battery. The cathode material is a cobalt sulfide which is a hollow core-shell dodecahedron structure; ZIF-67 and a sulphur source are dissolved in a solvent to form a mixed solution; the mixed solution is subjected to heating, heat preservation, cooling and drying by employing a hydrothermal method to take out a precipitate, namely the lithium air battery cathode material. The hydrothermal method is employed to perform vulcanization of the ZIF-67 to obtain the cathode material, the preparation method is simple, the cathode material has the electrochemical catalytic activity, the lithium air battery prepared by employing the cathode material is excellent, has the coulombic efficiency up to 86.6%, can show better reversibility, and can effectively improve the cycle life of the battery: when the specific discharge capacity is controlled to 500 mAh g<-1>, the lithium air battery can stably cycle for 32 loops until the voltage is stabilized above 2.0V.

The invention provides an environment-friendly organic silicon modified TPU (Thermoplastic Polyurethane) hot melt adhesive and a preparation method thereof. The organic silicon modified TPU hot melt adhesive is prepared from the following preparation raw materials in parts by weight: 50 to 70 parts of polyester polyol, 30 to 40 parts of diisocyanate, 5 to 10 parts of hydroxyalkyl-terminated polydimethylsiloxane, 10 to 20 parts of hexaalkoxysilane coupling agent, 10 to 20 parts of acrylic resin, 5 to 8 parts of silica, 1 to 5 parts of diatomite, 2 to 8 parts of chain extender, 1 to 5 parts of catalyst and 1 to 6 parts of antioxidant. The organic silicon modified TPU hot melt adhesive provided by the invention has apparent viscosity which is 5,100MPa.s to 5,800MPa.s, high viscosity and peelstrength which is 52N / 2.5cm<2> to 58N / 2.5cm<2>, and has favorable bonding strength, moderate hardness, melting point which is 71 to 80 DEG C and low melting point, moreover, cannot release a harmful component in a use process, and is safe and environmentally friendly.

The invention takes Mn stress-free fleur-de-lis as a blank group and utilizes a MnSO4 solution to respectively stress experimental groups of fleur-de-lis for 1 month and 2 months. In situ manganese-enriched biochars are acquired through pyrolysis under N2 atmosphere after harvesting treatment; the biochars are respectively named as BC-L0, BC-L1, BC-L2, BC-R0, BC-R1 and BC-R2 on the basis of collection parts; Rhodamine B is taken as a probe molecule for researching influences of conditions of pyrolysis temperature (500 DEG C, 700 DEG C and 900 DEG C) and pyrolysis time (0.5 h, 1 h and 2 h) andthe like on adsorption capacity of biochars, and screening the preparation conditions when the adsorption capacity of biochars is optimal; SEM, EDS, XRD, AAS and the like are adopted for physically representing biochars, and meanwhile establishing a Fenton-like system and researching the catalytic capacity of the manganese-enriched biochars; a biochar particle modified glassy carbon disc electrodeis utilized to research electrocatalytic reduction reaction of H2O2 in neutral medium on different biochar catalysts through a cyclic voltammetry scanning method, so as to represent electro-catalyticperformances of different biochars.

The invention discloses a catalyst for degrading chlorophenol pollutants and a preparation method and applications thereof, and belongs to the fields of environment function materials and catalysis. The catalyst is prepared by following steps: at first, reacting aminated reduced graphene oxide with 3,5-dibromo salicylaldehyde in an ethanol system to synthesize 3,5-dibromo salicylaldehyde Schiff base; and then reacting copper acetate monohydrate with 3,5-dibromo salicylaldehyde Schiff base in an ethanol system to synthesize a Schiff base-copper complex. The catalyst can activate chlorophenol pollutants in a potassium persulfate degradation water solution. The method of eliminating chlorophenol pollutants comprises following steps: (a) preparing a catalyst solution from the catalyst and deionized water, and preparing a potassium persulfate solution from potassium persulfate and deionized water; and (b) mixing the catalyst solution, the potassium persulfate solution, and a water solutioncontaining chlorophenol pollutants, adding the mixed solution into deionized water, and carrying out reactions under vibration in the absence of light. The preparation method is simple, the catalyst activates potassium sulfate under mild conditions, and the energy consumption and pollution are low.

The invention belongs to the technical field of photopurifying agents and discloses a neutral formaldehyde photopurifying agent and a preparation method thereof. The preparation method disclosed by the invention comprises the following steps: S1, calcining dicyandiamide under 500 to 650 DEG C to obtain graphite-phase carbon nitride; S2, grinding the graphite-phase carbon nitride into powder and calcining again under 400 to 550 DEG C in the air atmosphere to obtain carbon nitride; S3, dispersing carbon nitride into water to obtain the neutral formaldehyde photopurifying agent. The preparation method disclosed by the invention has the advantage of simpleness in operation; the prepared formaldehyde photopurifying agent has the advantages of high activity, larger specific surface area (170.2 m<2> / g), ability in providing more reaction sites, stronger absorption to 200 to 1100nm waveband light and stronger photocatalytic degradation purifying ability under visible light irradiation; when being applied to photocatalytic degradation of formaldehyde gas, 61% of formaldehyde can be degraded within 16 hours; furthermore, neutral water is utilized as a dispersing agent, so that more safety inuse is achieved, and dispersity is stable and durable.

The invention provides a resveratrol-based bio-based carbon fiber composite material and a preparation method thereof, and belongs to the field of carbon fiber composite materials. The composite material comprises 25-35 parts of bio-based epoxy resin, 55-70 parts of a carbon fiber material and 5-10 parts of a curing agent, wherein the bio-based epoxy resin is resveratrol-based epoxy resin or a mixture of the resveratrol-based epoxy resin and bisphenol A type epoxy resin. The resveratrol-based epoxy resin has high polymerization reaction activity, the reaction conditions for preparing the carbon fiber composite material by taking the carbon fiber as a resin matrix are mild, the curing time is effectively shortened, and the curing temperature is reduced; resveratrol is a polyphenol compoundextracted from vegetable tannin, residual monomers are nontoxic, raw materials are renewable, triphenolic hydroxyl groups in the structure of resveratrol can be condensed with epoxy chloropropane to form a polyfunctional epoxy prepolymer, and many crosslinking active sites are provided for resin curing, so the crosslinking density, mechanical properties and heat resistance of a cured product are improved.

The invention relates to all-solid-waste foam concrete and a preparation method thereof. The concrete comprises the following raw material components in percentage by mass: 6-12% of wet-milled superfine slag, 18-30% of slag, 4-10% of a compound activator, 32-40% of iron tailings, 4.65-5.27% of a compound foaming agent, 0.078-0.082% of a compound foam stabilizer and the balance of water. The light-weight and high-strength all-solid-waste foam concrete is prepared from the wet-ground superfine slag, the phosphogypsum, the steel slag, the iron tailings and other solid wastes as main raw materials under the action of the compound foaming agent and the compound foam stabilizer, the dry density grade of the provided all-solid-waste foam concrete can reach A06, the 28d compressive strength grade can reach C3.0, and the development requirements of light weight and high strength of the foam concrete are met.

Provided is a preparation method of a copper oxidechemically modified electrode for detecting glucose. The method comprises the main steps that according to the mass ratio of copper ions to urea 3:2, a copper salt solution is slowly and dropwise added to the urea solution to generate a cupper ion complex having high coordination number; then, the complex is put in a hydrothermal reaction kettle to perform hydrothermal reaction, and a copper oxide precursor is prepared; the precursor is decomposed into rice-shaped copper oxide at high temperature; then the copper oxide is matched with a Nafion solution to obtain a rice-shaped copper oxide modifying solution; finally the solution is dropwise added to the surface of the solid electrode to obtain the rice-shaped copper oxidechemically modified electrode. The preparation method is simple in operation, a template agent and template are omitted, and the copper oxide having a unique rice-shaped structure can be obtained. The prepared chemically modified electrode has the good electrochemical responsiveness to glucose, low detection limit (0.000075 mM), a wide detection range (0.001-2.361mM) and high sensitivity (2.376Ma.mM-1.cm-2).

The invention discloses a preparation method of a manganese dioxide / carbon nanotube complex fuel cell cathode oxygen reduction catalyst and belongs to the field of energy. The preparation method comprises the following steps: firstly activating a carbon nanotube, then uniformly mixing the carbon nanotube with potassium permanganate, performing hydrothermal reaction in a high-pressure reactor and finally calcining under argon to obtain a manganese dioxide / carbon nanotube complex. The complex as a precious metal-free catalyst is applied to oxygen reduction reaction in an alkaline medium, shows excellent catalytic activity and shows the near-four electron transfer reaction. The manganese dioxide / carbon nanotube complex also has stronger methanol resistance and superior long range stability. Due to low cost and wide adaptability, the manganese dioxide / carbon nanotube complex is one of potential materials for the fuel cell cathode catalyst and is expected to replace a precious metal catalyst. The preparation method disclosed by the invention has the benefits that the process is simple, the operation is easy, and a synthetic material has an ordered mesoporous structure, more active sitesand excellent catalytic property.

The invention provides a method for preparing a nano-structure of magnesium, which includes the following steps of: fully mixing MgO powder with C powder to make a block; then adopting an electric-arc heating method for evaporation to generate the nano-structure of magnesium; and selecting a variety of carbons to adjust the appearances of the nano-structure of magnesium. The method is simple in the device, high in resultant velocity, low in cost, and easy for realizing industrialized batch production. Products of the nano-structure of magnesium, which is obtained via the method, are less than 30 nanometers in dimension, with high purity and controllable appearances and structures. Besides, products of the nano-structure of magnesium have superb kinetic property for absorbing / desorbing hydrogen, with promising application prospects.

The invention discloses a modified acetic acid lignin polyurethane adhesive and a preparation method thereof and belongs to the field of polyurethane adhesive preparation. The method includes following steps: (1), subjecting acetic acid lignin to hydroxylation modifying to obtain hydroxylated acetic acid lignin; (2), allowing hydroxylated acetic acid lignin to react with an amination reagent to obtain multi-hydroxy aminated acetic acid lignin; (3), copolymerizing lignin after being modified twice with polyols, isocyanate and catalyst which are metered well to obtain a high-strength polyurethane adhesive material. The problem that lignin is low in reaction activity and few in reaction site and the problem that polyurethane adhesives are high in cost and difficult in degradation are solved.The polyurethane adhesive has good mechanical performance and adhesiveness, needed biomass is extensive in raw material source, the polyurethane adhesive is environment-friendly and degradable, and high-value utilization of lignin is realized.

The invention provides a method for preparing micro-porous carbon-structural electrode material from plant materials and application of the micro-porous carbon-structural electrode material and belongs to the field of new-generation energy storage. The method includes the steps of firstly, frequently boiling water and ethyl alcohol mixture containing cellulose-enriched plants to remove proteins, fats, sucrose organics; secondly, heating and drying and then subjecting the mixture to high-temperature calcination in atmosphere of protective gases, cooling naturally to obtain a micro-porous carbon-structural material; thirdly, putting the micro-porous carbon-structural material in mixed solution of sulfuric acid and nitric acid while stirring continuously for 10-20 minutes to achieve surface functionalization. According to the method, the cellulose-enriched plant residues are utilized for preparing the electrode material for the first time, acid solution can be recycled, the whole preparation is simple and free of pollution, the method can be applied to production in scale, and the prepared electrode material has excellent performance which is similar to the lithium-ion storage performance of graphene material, has high practicable value, and has potential to substitute for the commercial graphite to serve as the novel lithium-ion battery electrode material.

The invention provides a modification method for nano calcium peroxide with controllable particle size. The modification method comprises the following steps: adding a certain amount of a calcium salt to dispersing agent solutions of different concentrations; mixing to prepare a reaction base solution under an ultrasonic condition; slowly dripping hydrogen peroxide solution with a certain concentration to the reaction base solution at a certain rate, wherein the reaction base solution is stirred continuously; after the dripping is completed, allowing the reaction to continue for 10-20 min; after the complete reaction, the mixed solution is centrifuged to obtain precipitate; washing repeatedly with deionized water and absolute ethyl alcohol; placing in a vacuum drying box for drying for 24-48 h to obtain the nano calcium peroxide with different particle sizes. The modification method has the benefits that the process is simple; the reaction conditions are mild; the reaction time is short; the added dispersing agent in the reaction is non-toxic and harmless, low in cost and easy to obtain; no pollutants is generated in the production process; the prepared product is high in performance; nano calcium peroxide of different particle sizes can be prepared under different reaction conditions, and the average particle size is 10-200 nm. The invention provides a novel synthetic method for the nano calcium peroxide for groundwater remediation, and the particle size of the prepared calcium peroxide can be controlled.