72results about How to "Good prospects for commercial application" patented technology

The invention discloses a preparation method of N-doped porous carbon coated nano-particles (Co@Ir/NC-x, and x is the quality ratio of Ir) of a Co-Ir core-shell structure and application of the N-doped porous carbon coated nano-particles of the Co-Ir core-shell structure to catalytic water splitting. The preparation method has the advantages that (1) the preparation process is simple and direct, and energy consumption is low, specifically, Co/NC obtained after a zeolite imidazole framework material (ZIF-67 for short) is calcined is directly subjected to Galvanic replacement with Ir<3+> at theroom temperature, high temperature and high pressure are not needed, and accordingly the energy consumption is low; (2) the catalytic performance is good, and the stability is high, specifically, a Co@Ir/NC-10% sample is in a 1M KOH solution, in an oxygen producing test, the current density is 10 mA cm<-2>, the overpotential is 280 mV, and the performance is higher than IrO2; in a hydrogen producing test, the current density is 10 mA cm<-2>, the overpotential is -121 mV; besides, after a stability test of 12 h, the oxygen producing activity of IrO2 is attenuated by 55.8% while the oxygen producing activity of Co@Ir/NC-10% is attenuated only by 20.6%, and the hydrogen producing stability of Co@Ir/NC-10% is far higher than that of commercial Pt/C under the same conditions; and (3) the catalyst cost is low and the Co source is wide, specifically, the nano-particles are of the core-shell structure with Co as a core and Ir as a shell, the amount of Ir is reduced on the basis of more exposedcatalytic activity sites, a core metal precursor Co is wide in source and low in cost, the catalyst cost is greatly reduced, and great commercial application prospects are achieved.

The invention relates to a hollow fiber compound nanofiltration membrane. The nanofiltration membrane takes a porous supporting layer as an inner layer and a separating function layer as an outer layer. A casting membrane solution of the porous supporting layer contains an inner layer macromolecular polymer which is selected from one or more of polysulfone, polyether sulfone, polyvinylidene fluoride, polyvinyl chloride and polyacrylonitrile; a casting membrane solution of the separating function layer contains an outer layer macromolecular polymer which is selected from one or more of polyetherimide, polyether-ether-ketone, sulfonated polyether-ether-ketone, polymethyl methacrylate and polyvinyl alcohol; a preparation method comprises the following steps: synchronously extruding and molding the inner layer casting membrane solution and the outer layer casting membrane solution; solidifying to obtain a membrane filament in a nascent state; and carrying out an oxidizing agent aqueous solution to obtain the hollow fiber compound nanofiltration membrane. The invention further provides the preparation method of the nanofiltration membrane correspondingly. According to the hollow fiber compound nanofiltration membrane provided by the invention, the flux of the nanofiltration membrane is remarkably improved, and moreover, the nanofiltration membrane further has the certain desalinization rate.

The invention discloses zero-VOC (volatile organic compound) cement-based water-proof material copolymer emulsion and a preparation method thereof. The preparation method adopts a zero-VOC copolymer emulsion component A and an inorganic powder component B, the zero-VOC copolymer emulsion component A is prepared from deionized water, alkyl acrylate, styrene, acrylic acid functional monomers, emulsifying agents, initiators, a buffer agents, polymerization inhibitors, oxidizing agents, reducing agents, sterilizing agents and defoaming agents through polymerization of pre-emulsification semi-continuous seed emulsion, and the inorganic powder component B comprises ordinary portland cement, quartz sand and water reducers. The prepared emulsion is high in solid content, low in viscosity, uniformin particle size and good in stability and has excellent rheological property and coating water absorption, the content of a residual monomer in an emulsion product is lower than 300ppm and meets national zero-VOC emulsion standards, the emulsion is environmentally friendly and free from toxicity and pollution, the compatibility of the emulsion and cement is good, and a prepared polymer cement waterproof coating is excellent in water resistance, good in low-temperature flexibility and low in water absorption.

The invention relates to a preparation method of a nano-hybrid composite membrane. The preparation method comprises the following steps: when a water phase solution containing hybrid metal particles is prepared, adding water-soluble metal salt and a complexing agent into water so as to allow metal ions to be firstly combined with the complexing agent to form a stable complex which is uniformly distributed in the water phase; then adding a precipitant capable of reacting with the water-soluble metal salt to generate precipitates and a monomer for undergoing polymerizing to generate a composite membrane, and conducting stirring and mixing and/or performing ultrasonic treatment to obtain a water-phase solution containing uniform nanoparticles; and taking the water-phase solution as a reactant to participate in an interfacial polymerization reaction to generate a nano-particle hybridized composite membrane functional separation layer. According to the invention, the distribution uniformity of hybrid metal nanoparticles in the functional separation layer can be remarkably improved, the problem of membrane defects caused by uneven dispersion and even agglomeration of the nanoparticles is reduced, the water flux of the nano-hybrid composite membrane is improved while the high rejection rate of the nano-hybrid composite membrane is kept, the uniformity and stability of the permeability of the composite membrane are improved, and reproducibility is good.

The invention discloses an electromagnetic shielding and hydrophobic functional fabric with high absorption characteristics and a preparation method thereof. The preparation method comprises the mainoperation steps of coating a textile with conductive filler dispersion liquid to obtain a conductive coating; and preparing a hydrophobic polymer nanoparticle composite solution, and coating the obtained conductive cotton fabric with the hydrophobic polymer nanoparticle composite solution to prepare a polymer composite microsphere coating. The fabric prepared by the method has good electromagneticshielding performance on the basis of keeping the softness of the fabric, the absorption loss of the fabric is increased by regulating and controlling electromagnetic parameters of the fabric, the reflection and secondary radiation of electromagnetic waves are greatly reduced, meanwhile, the prepared electromagnetic shielding fabric also has a hydrophobic function, and the preparation method is simple, convenient, feasible and low in cost.

The invention relates to the technical field of molecular breeding of cotton, in particular relates to a marker and a method for identifying a cytoplasmic sterility homozygous restorer line of Gossypium harknessii. Compared with the prior art, the marker and the method have the beneficial effects of high speed and high accuracy as well as practicability and simplicity, wherein when a primer provided by the invention is used for identifying the molecular marker, the homozygosity of the restorer line (or strain) can be quickly identified, and the workload can be reduced by more than 70% compared with that of traditional identification methods; the primer has the advantages of simplicity, stability, reliability, high repeatability and the like and can be used for quickly identifying the homozygosity of restore genes rapidly, the genetic condition of the restore genes can be truly identified in the level of DNA, and thus the selection accuracy is improved to be above 97% at least; all procedures of the identification method provided by the invention are easy to operate, and thus the method has good scientific research and commercial application prospects.

The invention discloses a poly-heterocyclic ring based acrylate monomer modified waterborne hydroxy acrylic dispersion and a preparation method thereof. The dispersion comprises, by weight, 20-50 parts of solvents, 5-10 parts of poly-heterocyclic ring based acrylate monomers, 50-70 parts of acrylic alkyl ester, 25-30 parts of acrylic functional monomers, 1-3 parts of chain transfer agents, 2-4 parts of initiators, 1-3 parts of anion exchange reactive emulsifiers, 2-4 parts of initiators, 100-120 parts of deionized water, 0.1-0.5 part of defoaming agents, 0.2-0.6 part of leveling agents and 0.3-0.8 part of wetting agents. The glossiness of a film is higher than 97 degrees, the hardness of the film reaches up to 2H, the film is strong in impact resistance, excellent in flexibility and adhesive force, and the dispersion has prominent chemical corrosion resistance such as acid resistance, alkali resistance and water resistance, meets natural zero-VOC (volatile organic compounds) paint standards, is environmentally friendly, non-toxic and free from pollution and can be used for waterborne wood paint, waterborne industrial paint and waterborne floor paint.

The invention provides an Ag2ZnSnS4/Mo structure photo-anode with visible-light response, a preparation method of the photo-anode and an application of the photo-anode. The method includes the steps:electro-depositing the metal elements of silver, tin and zinc on a molybdenum mesh by taking the molybdenum mesh as a substrate, taking silver nitrate as a silver source, taking stannous chloride as atin source and taking zinc chloride as a zinc source; vulcanizing and calcining the metal elements. The method has the advantages of simplicity, mild reaction conditions, low cost, no pollution and the like, and has a high commercial application prospect. The Ag2ZnSnS4/Mo structure photo-anode is quite high in photoelectric conversion efficiency and can be used for the fields of solar batteries,photoelectric catalysis, photocatalysis and the like. Experiment research finds that the photo-current density of the Ag2ZnSnS4/Mo structure photo-anode in a photoelectrochemical test exceeds 4mA/cm<2>, the photoelectric conversion efficiency of the photo-anode in a main light absorption area reaches 25%, and importantly, the photo-anode shows an excellent hydrogen evolution property when the photoelectrochemical test is performed in a formed electrolytic tank.

The invention relates to a manganese-based composite oxide catalyst for selectively reducing NOx by ammonia with high thermal stability and high low-temperature activity and a preparation method thereof. The catalyst can be applied to purification of NOx in flue gas from factories and vehicle tail gas. The catalyst is prepared with manganese oxide as an active component and samarium and other transit metals as cocatalysts, thus forming the ternary metal composite oxide catalyst. The catalyst is used for a reaction of selectively catalytically reducing NOx by ammonia and has very wide temperature window at a low temperature. After being roasted at 500-650 DEG C, the catalyst can reach more than 80% in NOx removal rate in a temperature range of 50 to 300 DEG C. The catalyst also has strong anti-water and anti-sulfur-poisoning capability. The preparation method is simple and low-cost, and has excellent application prospect.

The invention discloses a method for preparing mullite multiphase ceramic by low-temperature sintering of bauxite tailings, and belongs to the technical field of high-value utilization of the bauxite tailings and ceramic preparation. According to the invention, bauxite tailings, bauxite clinker and lithium chinastone are adopted as main raw materials, and the mullite multiphase ceramic is prepared through the processes of batching, ball milling, molding and low-temperature sintering. The mullite multiphase ceramic material prepared by low-temperature sintering of the bauxite tailings has the characteristics of high compressive strength, small linear shrinkage rate, high volume density and simple preparation process, and can be used in industries such as high-value utilization of the bauxite tailings and ceramics. The required raw materials are easy to obtain, the preparation process is simple, the utilization amount of the bauxite tailings is high, the problems of massive accumulation of the bauxite tailings and pollution and damage to the environment can be solved, and waste is turned into wealth; and by adding the bauxite tailings, the sintering temperature of the mullite multiphase ceramic can be reduced, the cost and the energy consumption are low, and high-value utilization of the bauxite tailings is realized.

The invention discloses a red-light plastic scintillator and a preparation method and application thereof. The red-light plastic scintillator is composed of a scintillator matrix, and a triplet trapping agent, a singlet trapping agent and a wave-shifting agent, which are co-doped in thescintillator matrix, wherein thescintillator matrix is AS, the triplet trapping agent is Eu(DBM)3Phen, the singlet trapping agent is TPB or BPEA, and the wave-shifting agent is DCM; the obtained red-light plastic scintillator has neutron gamma discrimination capability, has good mechanical strength and stability, and can be applied to a neutron detector.

The present invention discloses a molecular marker related with cotton fertility restoration, and an application thereof. A provided primer pair for identification or assistant identification of cotton restoration genes to be tested consists of a primer 1 and a primer 2; the primer 1 is as follows (a) or (b): (a) a single-stranded DNA molecule shown in a sequence 2 in a sequence listing; and (b) asingle-stranded DNA molecule with the sequence 2 in the sequence listing substituted and/or deleted and/or added by one or several nucleotides and having a same function as the sequence 2 in the sequence listing; and the primer 2 is as follows (c) or (d): (c) a single-stranded DNA molecule shown in a sequence 3 in the sequence listing; and (d) a single-stranded DNA molecule with the sequence 3 inthe sequence listing substituted and/or deleted and/or added by one or several nucleotides and having a same function as the sequence 3 in the sequence listing. The molecular marker is closely related to cotton fertility restoration, and can be effectively used for molecular marker-assisted selection breeding of restoration lines and "three-line" hybrid cotton.

The invention discloses a preparation method for oxide quantum dots loaded in flexible superfine porous carbon nanofiber. The preparation method comprises the following steps of firstly, dissolving a high-molecular polymer carbon source in a solvent, sequentially adding a metal salt and a pore-forming agent, performing uniform mixing to prepare a stable precursor solution, and then performing electrostatic spinning on the precursor solution to obtain a precursor nanofiber membrane; calcining the obtained precursor nanofiber membrane in an air atmosphere to obtain a pre-oxidized fiber membrane; and performing high-temperature carbonization on the obtained pre-oxidized fiber membrane in an inert atmosphere to obtain a flexible superfine porous carbon nanofiber membrane loaded with the highly-dispersed oxide quantum dots. According to the preparation method for the oxide quantum dots loaded in the flexible superfine porous carbon nanofiber, the process is simple, and the prepared oxide quantum dots are small in particle size and high in loading rate, are highly and uniformly dispersed in the superfine porous carbon nanofiber, and have wide application prospects in the fields of flexible electronics, energy and catalysis.

The invention discloses a fish behavior image recognition method based on improved AlexNet, and the method comprises the following steps: S1, building an item-based flexible attention algorithm which is used for the convolution function of a trunk part of the algorithm and the building of a multi-layer sensor, a decoder and a sampling layer of a branch part of the algorithm; s2, constructing a fish behavior image recognition sample library, and placing an item-based flexible attention module between a full connection layer and an output layer by using an improved AlexNet model; and S3, transplanting the trained fish image recognition knowledge graph into the optimized AlexNet model by adopting a model migration method to obtain a fish behavior recognition result. The method has the advantages that a traditional fish behavior image recognition algorithm is improved, under the same recognition speed, the recognition precision is higher, the convergence speed is higher, meanwhile, over-convergence is avoided, and the method has actual engineering application value.

The invention relates to a method of preparing manganese-based multi-component oxide cathode materials of a lithium ion battery, belonging to the technical field of manufacture process of chemical electrode materials. The method comprises preparing a solution containing Li<+>, Mn<2+>, Ni<2+> and Co<2+>, adding a complexing agent into the solution, absorbing the prepared solution with carbon adsorption materials, placing into a vacuum drying oven, placing into a tubular furnace after drying to pre-burn and calcine, cooling to room temperature according to a program in the tubular furnace after the reaction, grinding and drying to obtain the manganese-based multi-component oxide cathode materials which are small in size and uniformly distributed. According to the invention, the preparation technology is simple, has easily-controlled parameters, and can be easily invested into commercial application. The obtained manganese-based multi-component oxide cathode materials has advantages of good morphology and structure, small-size particles and relatively uniform distribution, thereby preventing agglomeration and reducing the generation of large particles; and shows relatively high charge and discharge specific capacity and good cycle performance when applied in the cathode materials of the lithium ion battery.

The invention discloses a lithium battery positive electrode material surface transmission efficiency regulation and control method and an obtained positive electrode material. The method comprises the following steps: S1, uniformly mixing two or more polymers according to a certain ratio to obtain a polymer mixed solution; S2, dispersing a lithium battery positive electrode material into the polymer mixed solution to obtain a suspension; and S3, heating the suspension, and drying a powder to obtain the final polymer-coated lithium battery positive electrode material. A polymer composite coating layer is formed on the surface of the positive electrode material, the elasticity of the polymer and a cross-linking property between two or more polymers are utilized, a defect of interface incompatibility is eliminated while multiple electron/ion channels are constructed, the compactness and completeness of a coating structure are realized, and different polymers are coated so that electron/ion transmission efficiency of an interface can be regulated and controlled. The method is simple, convenient, low in cost and high in raw material selectivity. Universality is high, and a commercial application is easy.