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40results about How to "Easy to repeat" patented technology

Metal auxiliary agent modified Pt loaded CeO2 catalyst, preparation and application thereof in CO oxidation

The invention relates to a metal additive modified Pt-loaded CeO2 catalyst, preparation and application thereof in CO oxidation, and belongs to the technical field of industrial catalysis. The preparation process of the catalyst mainly comprises the following steps: respectively dissolving cerium salt, platinum salt and auxiliary metal salt in deionized water to prepare corresponding precursor solutions; then, mixing the three solutions, and dropwise adding ammonia water under a stirring condition until yellow precipitates are generated; and finally, drying and washing the precipitate, and calcining the solid powder in a proper atmosphere to obtain the assistant metal modified Pt / CeO2 catalyst. La, Pr, Nd or Sm auxiliary metal is introduced into the Pt / CeO2 catalyst, so that the CO catalytic oxidation performance of the catalyst can be improved, and the poisoning resistance of the catalyst in an SO2-containing environment can be enhanced. The method has important significance in the actual industrial application, especially in the catalytic oxidation process under the condition of treating complex flue gas.
Owner:HUANGGANG NORMAL UNIV +1

Preparation method of reaction catalyst for preparing acrylic acid through selective oxidation of propane

The invention relates to the technical field of catalysts, in particular to a preparation method of a reaction catalyst for preparing acrylic acid through selective oxidation of propane, which comprises the following steps: adding a precursor salt solution into an aqueous solution, uniformly stirring, adding a certain mass of an active agent into the solution, uniformly stirring, and drying to obtain the catalyst. The preparation method comprises the following steps: preparing a solution, carrying out hydrothermal treatment on the solution at a certain temperature, washing and drying, roasting the obtained solid in a muffle furnace, and finally roasting the roasted solid in a tubular furnace under the protection of argon to obtain the final catalyst. According to the present invention, the preparation method has the simple process, and comprises the two steps of acrylic acid reaction catalyst preparation and acrylic acid preparation through the catalytic reaction of the catalyst, such that the propane conversion rate and the acrylic acid selectivity are significantly improved compared with the acrylic acid reaction catalyst prepared by the traditional method, meanwhile, the whole method is convenient to operate and easy to repeat, and has a good application prospect.
Owner:ANHUI HUANXUAN MATERIAL TECH CO LTD

SNP (Single Nucleotide Polymorphism) molecular marker for identifying upland cotton fiber strength character and application of SNP molecular marker

The invention discloses an SNP (Single Nucleotide Polymorphism) molecular marker for identifying upland cotton fiber strength character and application thereof, and belongs to the technical field of plant molecular biology. The invention discloses an SNP (Single Nucleotide Polymorphism) molecular marker for identifying upland cotton fiber strength character, which comprises two SNP molecular marker sites which are both positioned on an A10 chromosome of an upland cotton genome. The method has the characteristics of simplicity in operation, accurate result, convenience in repetition and the like, is suitable for screening upland cotton germplasm resources with different fiber strengths, identifies excellent sites with potential application values for molecular marker-assisted selective breeding, and has a wide application prospect.
Owner:XINJIANG ACADEMY OF AGRI & RECLAMATION SCI +1

Asynchronous load Internet of Things rule engine design method based on scene linkage

The invention discloses an asynchronous load Internet of Things rule engine design method based on scene linkage. The method comprises the following steps of: 1, triggering a scene linkage rule; 2, rule scheduling of a rule engine, and rule packaging into an executable task; 3, a task issues a scheduling request to an event bus of the basic module; 4, the event bus sends the data to a monitored task scheduler; 5, the task scheduler marks the task according to the task information, sends the task to the scene for linkage, and issues the task to an event bus; step 6, the working device monitors the released task, executes the task and returns a task result to the event bus; and step 7, after the rule engine monitors a result, performing a next round of rule triggering judgment or directly returning the result. The method has the advantage of being capable of performing real-time and intelligent processing on the data between the devices.
Owner:长江信达软件技术(武汉)有限责任公司

Crosslinkable hyperbranched polyarylene ether nitrile water-based sizing agent and preparation method thereof

The invention provides a crosslinkable hyperbranched polyarylene ether nitrile water-based sizing agent and a preparation method thereof, and belongs to the technical field of sizing agents. The composition comprises the following components in percentage by mass: 0.5-6% of polyarylene ether nitrile; 0.2-5% of a surfactant, 0.2-2% of an organic solvent, and the balance of water; the structure of the polyarylene ether nitrile is similar to that of a polyarylene ether resin matrix, and when the polyarylene ether nitrile is used as a main component of the sizing agent, the excellent interfacial compatibility between the polyarylene ether nitrile and the polyarylene ether resin matrix can be ensured. The sizing agent has a composite material interface phase with high temperature resistance and solvent resistance, and the interface bonding strength of the carbon fibers and the polyarylether resin can be effectively improved. # imgabs0 #
Owner:CHANGCHUN UNIV OF TECH

Organ-like capable of simulating uterine spiral artery remodeling and in-vitro preparation method thereof

The invention relates to an organoid capable of simulating uterine spiral artery remodeling and an in-vitro preparation method thereof, and belongs to the technical field of stem cells. The invention provides an organoid capable of simulating uterine spiral artery remodeling. The organoid capable of simulating uterine spiral artery remodeling is obtained by co-culturing trophoblast stem cells and early vascular cell spheres, the trophoblast stem cells and the early vascular cell spheres are obtained by inducing pluripotent stem cells. The organoid capable of simulating uterine spiral artery remodeling is constructed through co-culture of trophoblast stem cells and early vascular cell spheres. The organ can simulate the uterine spiral artery remodeling process in the early stage of pregnancy in vitro, then is used for analyzing the pathogenesis of bad pregnancy caused by the abnormal process, and is used for a research model for batch induction of pregnancy-related diseases, so that a safety test is provided for medication of some clinical pregnancy patients.
Owner:NANJING MEDICAL UNIV +1

Synchronous enrichment and identification method of N-linked glycopeptide and O-linked glycopeptide

The invention discloses a method for synchronously enriching and identifying N-linked glycopeptides and O-linked glycopeptides, and relates to the technical field of material analysis chemistry and organic chemistry, the method is characterized in that glycopeptides are enriched by adopting a column solid-phase extraction mode or a dispersive solid-phase extraction mode, and a glycopeptide sample is subjected to mass spectrometry. The glycopeptide enrichment material is a material obtained by carrying out copolymerization reaction on different types of hydrophilic monomer molecules with acrylic acid groups on the surface of porous silica gel by utilizing a reversible-fracture-chain transfer free radical polymerization reaction mechanism initiated by a matrix surface, and can be used for glycopeptide enrichment. According to the method, by controlling conditions such as pH and organic phase concentration in the enrichment process, step-by-step enrichment of N-linked glycopeptide and O-linked glycopeptide can be realized, high-selectivity enrichment of two glycopeptides in a complex mixture (high non-glycopeptide doping ratio) can be realized, and the capacity of identifying glycosylation in glycoprotein is remarkably improved.
Owner:赣江中药创新中心

Preparation of Pd / C catalyst and application of Pd / C catalyst in synthesis of phenylacetic acid from benzyl chloride

The invention belongs to the field of catalyst preparation technology and application, and relates to preparation of a Pd / C catalyst and a method for synthesizing phenylacetic acid from benzyl chloride by using the Pd / C catalyst. The method comprises the following steps: S1, preparation of a Pd / C catalyst: preparing a high-dispersity, high-activity and stable catalyst by improving the process, obtaining a high conversion rate by only using 0.2% of the catalyst, and having excellent reusability; and S2, synthesizing phenylacetic acid: taking benzyl chloride and CO as raw materials, adding the prepared high-activity Pd / C catalyst, and optimizing a reaction process to obtain high-yield and high-purity phenylacetic acid. The prepared catalyst shows an excellent catalytic effect, the production method is simple in step and mild in reaction condition, the yield of the obtained phenylacetic acid is relatively high, the used solvent can be recycled, the cost is greatly saved, and the method is suitable for large-scale industrial production.
Owner:XIAN CATALYST NEW MATERIALS CO LTD

Non-small cell lung cancer histone H1.3 arginine methylation point mutation cell model as well as construction method and application thereof

PendingCN121801973Agenetic stabilitySolve missing technical bottlenecksCompound screeningApoptosis detectionHistone methylationEnzyme digestion
The invention provides a construction method of a non-small cell lung cancer histone H1.3 arginine methylation point mutation cell model. The construction method comprises the following steps: designing mutation primers H1.3 R80A-F and H1.3 R80A-R; the method comprises the following steps: by taking a pCDH-HA-H1.3-Flag plasmid as a template, carrying out PCR (Polymerase Chain Reaction) amplification by adopting a mutation primer, digesting a product by DMT enzyme, and converting a competent cell to obtain a mutant plasmid; and co-transfecting the mutant plasmid and a helper plasmid to a packaging cell, collecting a virus solution, filtering, infecting an A549 cell, adding Polybrene to assist infection, culturing, and screening a stably transfected cell strain by using puromycin to obtain the recombinant plasmid. The invention also provides application of the mutant cell model obtained by the construction method. According to the invention, the blank of histone H1.3 methylation research is filled, the 80th arginine is clear as a core modification site, and the established model provides a new tool for lung cancer mechanism research and drug research and development.
Owner:ANHUI UNIV

Quick connection type faucet

According to the technical scheme, the quick connection type faucet is characterized by comprising a water inlet pipe, a water outlet pipe and a switch, a water outlet head is installed on the water outlet pipe, a locking mechanism connected with the water outlet pipe is arranged on the outer side of the water outlet head, the locking mechanism comprises a fixed ring located on the outer side of the water outlet head, and four sliding grooves are evenly distributed in the fixed ring in the circumferential direction; a sliding groove is formed in the upper side of the fixing ring, a locking rod is slidably connected into the sliding groove, an adjusting ring is rotatably connected to the lower side of the fixing ring in a positioning mode, four guide grooves are evenly distributed in the upper side of the adjusting ring in the circumferential direction, the guide grooves are Archimedes spiral grooves, guide rods are fixed to the lower side of the locking rod, and the lower ends of the four guide rods are inserted into the four guide grooves respectively. The utility model has the functions of convenient and fast connection with the hose and easy use by people.
Owner:WENZHOU JIAERDI SANITARY WARE CO LTD

Micro-nano hybrid SiCp reinforced aluminum matrix composite cylindrical part and preparation method thereof

The invention discloses a micro-nano hybrid SiCp reinforced aluminum matrix composite cylindrical part and a preparation method thereof, and belongs to the technical field of plastic processing of aluminum alloy materials. According to the preparation method provided by the invention, micron SiCp, nano SiCp and aluminum powder are mixed and then subjected to high-energy ball milling, the mixture and aluminum alloy are subjected to high-temperature dissolution and ultrasonic treatment, then die casting and homogenization treatment are carried out, and then continuous forging, backward extrusion and T6 heat treatment are carried out, so that the micro-nano mixed SiCp reinforced aluminum matrix composite cylindrical part is obtained. According to the micro-nano mixed SiCp reinforced aluminum matrix composite cylindrical part prepared through the preparation method, nanoscale SiCp and micron SiCp can be embedded with aluminum powder, the strength and hardness of crystals are improved, and then the mechanical property of an aluminum matrix composite is improved; by means of continuous forging and backward extrusion thermal deformation, as-cast defects such as shrinkage porosity and air holes can be eliminated, grain refinement is achieved, reinforcement distribution is improved, and therefore the cylindrical part is endowed with excellent mechanical performance.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Confined-range alloy catalyst for synthesizing hexafluoro-1, 3-butadiene as well as preparation method and application of limited-range alloy catalyst

The invention relates to a preparation method of a catalyst for synthesizing hexafluoro-1, 3-butadiene, in particular to a confinement alloy catalyst for synthesizing hexafluoro-1, 3-butadiene as well as a preparation method and application of the confinement alloy catalyst. The preparation method comprises the following steps: adding a silicon-based template, a solvent and a metal salt precursor into a hydrothermal kettle, carrying out hydrothermal treatment for a period of time, then carrying out centrifugal separation and drying on the obtained product, and finally putting the product into a muffle furnace for roasting to obtain the confinement alloy catalyst. The preparation method is simple in process and easy to repeat; the prepared confinement alloy catalyst is relatively long in service life, and has relatively high conversion rate and selectivity when being used for a reaction for preparing hexafluoro-1, 3-butadiene through continuous hydrogenation coupling of 1, 1, 2-trifluoro-1, 2, 2-trichloroethane.
Owner:HUBEI GUANGGANG GAS ELECTRONIC MATERIALS CO LTD

Method for determining residual N, N-dimethylaminopropylamine in FPA98Cl anion exchange resin by using gas chromatography

The invention relates to the technical field of gas chromatographic analysis, and discloses a method for determining N, N-dimethylaminopropylamine residues in FPA98Cl anion exchange resin by using gas chromatography, and the method comprises the following steps: S1, carrying out centrifugal separation on resin to obtain treated resin; s2, dissolving N, N-dimethylaminopropylamine in an organic solvent to obtain a reference substance solution; s3, diluting the reference substance solution into a reference substance solution with the concentration of 10%; s4, adding the treated resin into an organic solvent to obtain a test solution; s5, adding the treated resin into a reference solution with the concentration of 10% to obtain a standard test solution; and S6, setting parameters of a gas chromatograph, respectively and directly injecting the reference substance solution, the test solution and the standard test solution according to a certain sample injection amount, and calculating the residual quantity and the recovery rate of N, N-dimethylaminopropylamine according to a chromatogram. The method solves the problem that the residual quantity of N, N-dimethylaminopropylamine in resin cannot be quantitatively detected, and has the characteristics of better repeatability and higher sensitivity.
Owner:山东辰龙药业有限公司

Na-modified ferrocobalt solid solution catalyst, preparation thereof and application of catalyst in reaction for preparing high-carbon alcohol and co-producing high-carbon olefin from synthesis gas

The invention discloses a preparation method of a high-efficiency Na-modified solid solution catalyst and application of the Na-modified solid solution catalyst in a reaction for preparing high-carbon alcohol and co-producing high-carbon olefin from synthesis gas. The catalyst comprises a solid solution component and an auxiliary agent component, the solid solution component is a ferrocobalt solid solution, the auxiliary agent component is a sodium elementary substance or oxide, and a reaction active center is the ferrocobalt solid solution, cobalt and cobalt carbide or cobalt oxide species and the sodium elementary substance or oxide. The invention provides a preparation method and application of a novel Na modified ferrocobalt solid solution catalyst, the catalyst has high activity, high C6 + alcohol and C5 + olefin selectivity and stability, the operation temperature can be in a range of 200-350 DEG C, and the reaction pressure is in a range of 0.5-10 MPa. The catalyst is stable in structure in the reaction process, the preparation method is simple and easy to repeat, and industrial application is facilitated.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

P-region element reinforced double-monatomic catalyst as well as preparation method and application of P-region element reinforced double-monatomic catalyst

The invention discloses a P-region element reinforced double-monatomic catalyst as well as a preparation method and application thereof, belongs to the field of catalysts, and solves the problem of poor selectivity of production of hydrogen peroxide by electrocatalytic two-electron oxygen reduction of a traditional monatomic catalyst based on transition metal. According to the invention, cobalt and gallium elements are introduced into a zeolite imidazate precursor through an ion exchange method, the coordination environment of the catalyst is regulated through introduction of sulfur species, and finally, the P-region element reinforced double-monatomic catalyst is synthesized through high-temperature annealing. The invention also discloses an application of the catalyst in electrocatalytic two-electron oxygen reduction. The catalyst disclosed by the invention is used for producing hydrogen peroxide by electrocatalytic two-electron oxygen reduction, has the advantages of high hydrogen peroxide selectivity and high hydrogen peroxide production rate, and has profound significance for expanding the application scene of a P-region element catalyst in the field of electrocatalysis.
Owner:TIANJIN UNIV

Construction method of immortalized human alveolar type II epithelial cell silicosis model

The invention discloses a construction method of an immortalized human alveolar type II epithelial cell silicosis model, and particularly relates to the technical field of medicine. The method comprises the following steps: firstly carrying out silica dust treatment, and then carrying out cell primary treatment and subculture; and finally, carrying out contamination culture by using a SiO2 particle suspension to prepare the biochemical human alveolar type II epithelial cell silicosis model. According to the method, the immortalized human alveolar type II epithelial cells are used as research objects, SiO2 particle suspensions with different concentrations are used for infecting the immortalized human alveolar type II epithelial cells, and the optimal infecting time and infecting concentration are determined by detecting the cell activity; the method for constructing the silicosis model by inducing the immortalized human alveolar type II epithelial cells by using the SiO2 particle suspension in vitro is successfully established.
Owner:ZHENGZHOU UNIV

Preparation method of red fluorescent carbon dots with lysosome and nucleolus dual-targeting capability

The invention discloses a preparation method of red fluorescent carbon dots with lysosome and nucleolus dual-targeting capability in the technical field of nano material synthesis and biological imaging analysis. According to the preparation method, o-phenylenediamine is taken as a carbon source, methanol is taken as a solvent in the presence of rare earth ions, and the red fluorescent carbon dots can be obtained through a solvothermal method reaction in a reaction kettle. The synthesis process is simple, the raw materials are cheap and easy to repeat, and the absolute quantum yield of the purified red fluorescent carbon dots is 11.45%, so that the luminous efficiency is high, and the technical problem that the absolute quantum yield of the red fluorescent carbon dots in the existing bioimaging field is low is solved. The prepared red fluorescent carbon dots have non-exciting light dependence, and the emission wavelength can be extended to 800 nm; the size is small, the particle size distribution is 2.5-5.5 nm, and the average particle size is about 3.75 nm; the oil-water partition coefficient (Log P value) is 0.3-0.4, the water solubility is good, the lysosome and nucleolus targeting specificity is achieved, the photobleaching resistance is high, the biocompatibility is good, and the cytotoxicity is low.
Owner:ANHUI UNIV

Edge nitrogen vacancy carbon nitride with room-temperature ferromagnetism as well as preparation method and application of edge nitrogen vacancy carbon nitride

The invention discloses edge nitrogen vacancy carbon nitride with room-temperature ferromagnetism and a preparation method and application thereof. The edge nitrogen vacancy carbon nitride is an amorphous nanosheet and is of a graphite-like structure with an edge nitrogen vacancy. The thickness of the edge nitrogen vacancy carbon nitride nanosheet is 3-8 nm, and the length or width of the edge nitrogen vacancy carbon nitride nanosheet is 1-15 microns; the method comprises the following steps: calcining urea, grinding and annealing in an argon environment, cleaning and drying to obtain orange-red edge nitrogen vacancy carbon nitride; the preparation method disclosed by the invention has the characteristics of simple process, high efficiency and easiness in repetition, and the prepared edge nitrogen vacancy carbon nitride has the characteristics of high purity, high Curie temperature and room-temperature ferromagnetism, and can be applied to the fields of spinning electronic devices, topological quantum devices, magnetic storage and the like.
Owner:XIDIAN UNIV

Grape solid-liquid double-layer culture method

The invention discloses a grape solid-liquid double-layer culture method, and relates to the technical field of agricultural science, and the method comprises the following steps: obtaining a plurality of plump Chardonnay seeds; the solid substrate is placed in a seedling raising pot, the Chardonnay seeds are planted in the solid substrate of the seedling raising pot, the solid substrate comprises fine soil, vermiculite and perlite, and the proportion of the fine soil to the vermiculite to the perlite is 6: 1: 1; adding a culture solution into a liquid culture medium, and putting the seedling culture bowl into the liquid culture medium; the liquid level of the culture solution abuts against the bowl bottom of the seedling raising bowl, a plurality of seedling raising holes are formed in the bottom of the seedling raising bowl, and rhizomes obtained after sprouting and rooting of Chardonnay seeds planted in the seedling raising bowl extend into the culture solution through the seedling raising holes to absorb nutrition and moisture of the culture solution. According to the method, a solid-liquid co-culture mode is adopted, the problem of independent water culture and soil culture is avoided, the advantages of the water culture and the soil culture are combined, watering and fertilization are not needed, manpower and material resource investment is remarkably reduced, the overall cost is reduced, and the method can be used for genetic transformation screening.
Owner:NINGXIA UNIVERSITY

New crystal form of nafamostat mesylate and preparation method thereof

The invention provides a nafamostat mesylate new crystal form and a preparation method thereof, and belongs to the technical field of medicine crystal forms. An X-ray diffraction pattern of the new crystal form of nafamostat mesylate has characteristic diffraction peaks at the following 2 theta angles: 10.56 degrees, 12.02 degrees, 14.97 degrees, 15.95 degrees, 16.27 degrees, 16.95 degrees, 17.68 degrees, 18.35 degrees, 18.71 degrees, 19.22 degrees, 19.78 degrees, 20.42 degrees, 20.84 degrees, 21.74 degrees, 21.98 degrees, 22.55 degrees, 23.09 degrees, 23.72 degrees, 24.05 degrees, 24.25 degrees, 24.88 degrees, 25.78 degrees, 26.27 degrees, 27.30 degrees, 28.01 degrees, 28.84 degrees, 29.02 degrees, 29.81 degrees, 30.60 degrees, 30.96 degrees, 32.28 degrees, 32.98 degrees, 33.39 degrees, the new crystal form of nafamostat mesylate and the preparation method provided by the invention have the advantages of high purity, good stability, controllable process and easiness in repetition.
Owner:HENAN PROVINCE ZHONGTAI MEDICINE

Dual array resistivity pore pressure static cone penetrometer

The application discloses a double-array resistivity hole pressure static sounding device, which comprises a conical probe, a hole pressure filter ring, a sidewall upper friction cylinder, a resistivity testing module, a digital circuit board and an analog-digital converter; the conical probe is connected with the sidewall upper friction cylinder through the hole pressure filter ring; the sidewall upper friction cylinder is connected with the resistivity testing module; the sidewall upper friction cylinder is internally provided with a hole pressure sensor, a cone tip resistance sensor, a side friction resistance sensor, a temperature compensator and an inclinometer which are connected with the digital circuit board; the digital circuit board is connected with the resistivity testing module; the digital circuit board is connected with the analog-digital converter through a coaxial cable; the coaxial cable is connected with the analog-digital converter and a data acquisition instrument outside the device; the soil body horizontal resistivity measured by the application has the characteristics of in-situ, rapid, continuous and reliable, and provides a powerful detection tool for geotechnical engineering practice.
Owner:HOHAI UNIV

A pickling box

The utility model discloses a kind of pickling boxes, including box body, sealing cover, piston and detachably installed on the vacuumizing assembly of sealing cover, box body is equipped with containing cavity;Sealing cover is used to cover on box body, sealing cover is equipped with first sealing ring and is opened with through-hole;Piston is rotatably clamped in through-hole, when piston rotates to first angle position, box body is in storage mode, when piston rotates to second angle position, box body is in pickling mode;When box body is in pickling mode, vacuumizing assembly is connected with sealing cover and the air in containing cavity is extracted, to make piston press down and block first through-hole, to form vacuum state in containing cavity. Thus, by setting rotatable piston on sealing cover, so that container can be freely switched between storage mode and pickling mode, realize a box multi-use, it can be used as ordinary sealed storage box, also can be switched to pickling mode by vacuumizing assembly, greatly improve the flexibility and application range of use.
Owner:FOSHAN KOEDA ELECTRIC APPLIANCE CO LTD

A cache disk space allocation method and device, computer equipment and storage medium

ActiveCN117311621BReduce brushingeasy to operate
The application relates to the technical field of cloud storage, and discloses a cache disk space allocation method and device, computer equipment and a storage medium, the method comprises the following steps: when the cache disk is formatted, formatting a data area of the cache disk into data blocks of multiple different sizes; receiving cache data, and allocating a target data block for the cache data from the data blocks of the multiple different sizes based on the size of a cache data occupied space; and storing the cache data into the target data block. The technical scheme provided by the application solves the problem of low cache disk space utilization.
Owner:JINAN INSPUR DATA TECH CO LTD

Mesoporous conductive ZnO / ZIF-8 composite material as well as preparation method and application thereof

The invention discloses a mesoporous conductive ZnO / ZIF-8 composite material and a preparation method and application thereof, the preparation method comprises the following steps: dissolving an amphiphilic block copolymer in an organic solvent, and stirring to obtain a solution A; dissolving 2-methylimidazole in deionized water, and uniformly stirring to obtain a homogeneous solution B; dissolving zinc-containing metal salt in deionized water, and uniformly stirring to obtain a homogeneous solution C; mixing the solution A with the solution B, stirring to obtain a homogeneous solution D, mixing the solution C with the solution D to obtain a homogeneous solution E, and continuously stirring; centrifuging the stirred solution E, washing a product F with methanol, and stirring and soaking the product F in an organic solvent to obtain a product G; and partially oxidizing the surface of the product G in an air environment. The invention also discloses the composite material and application of the composite material in nitrogen dioxide gas sensors, photocatalysis and photoelectric detection. The obtained material is high in specific surface area, controllable in aperture, high in crystallinity and uniform in crystallization.
Owner:SOUTHEAST UNIV

Preparation method of doped and wrapped membrane structure

The invention discloses a preparation method of a doped and wrapped film structure, and belongs to the technical field of film preparation. Comprising the following steps: S1, cleaning a substrate material and feeding the substrate material into a sputtering chamber; s2, taking a ZnS target and a ZnO target as sputtering target materials, and sequentially carrying out the following coating steps on the substrate by using magnetron sputtering equipment: (a) vacuumizing a sputtering chamber to 1.0 * 10 <-4 > Pa, and introducing argon to carry out pre-sputtering; (b) sputtering to form a first ZnS layer; (c) sputtering to form a ZnO layer; (d) performing co-sputtering of ZnS and ZnO to form a co-doped layer; (e) sputtering to form a second ZnS layer; and S3, placing the coated sample in an oxygen atmosphere, and carrying out high-temperature annealing treatment to obtain the doped and wrapped film structure. The preparation method is simple and controllable in preparation process, good in stability and suitable for the window layer of the efficient thin-film solar cell.
Owner:CNBM RESEARCH INSTITUTE FOR ADVANCED GLASS MATERIALS GROUP CO LTD

A nickel-based catalyst for methanation of carbon monoxide and carbon dioxide and a preparation method thereof

The invention provides a nickel-based catalyst for methanation of carbon monoxide and carbon dioxide, comprising an active component and a carrier, wherein the active component is Ni, the carrier is an Al2O3-ZrO2 composite oxide, the mass percentage content of the active component in terms of NiO is 24-26wt%, the rest is the carrier, and the mass ratio of Al2O3 to ZrO2 in the Al2O3-ZrO2 composite carrier is 2:1; the invention also provides a method for preparing the catalyst, comprising preparing a solution by using aluminum nitrate nonahydrate, zirconium oxychloride octahydrate, a template agent P123, and a dispersant, and using ammonia water as a precipitant, adding the solution dropwise to the solution and stirring to obtain a precipitate, filtering, washing chloride ions in the precipitate, and drying and calcining to obtain the Al2O3-ZrO2 composite carrier, etc.; the methanation catalyst prepared by the invention has high conversion rate and selectivity for CO and CO2 and stable performance.
Owner:INNER MONGOLIA UNIV OF TECH +1

Fluorescent probe, preparation method and biological application thereof

The invention discloses a fluorescent probe as well as a preparation method and biological application thereof. The fluorescent probe disclosed by the invention is simple in synthesis method, cheap in raw material and easy to repeat; the invention relates to the technical field of material synthesis and biological imaging analysis, in particular to a lysosome biosensor, which can realize real-time imaging of living cell lysosome, has high specificity, is positioned in the cell lysosome, is insensitive to pH and polarity response, has strong photobleaching resistance, high biocompatibility and small cytotoxicity, and relates to the technical field of material synthesis and biological imaging analysis. The fluorescent probe as well as the preparation method and the biological application thereof have lysosome targeting specificity, are insensitive to response of pH and polarity, are relatively strong in photobleaching resistance and high in biocompatibility, and basically have no toxicity to cells. Therefore, the fluorescent probe disclosed by the invention is particularly suitable for real-time imaging of the living cell lysosome.
Owner:ANHUI UNIV +1

Design of novel lightweight high-entropy alloy of Al-Mg-Ti-Li-Ni-V series

PendingCN119663086AClear design ideaseasy to repeatVehicle frameHigh entropy alloys
The invention discloses a formula of a novel light high-entropy alloy of an Al-Mg-Ti-Li-Ni-V system, the novel light high-entropy alloy has good mechanical performance and low density, and the requirement of an automobile frame for materials with good plasticity and high strength ratio can be effectively met. The alloy prepared according to the method in the claim 1 is characterized in that the density of the novel alloy is 3.9-6.8 g / cm < 3 >, and compared with dual-phase steel, the density is reduced by 12-50%; the melting point is 1350-1800 DEG C and is improved by 108-177% compared with that of a magnesium alloy (the melting point is 650 DEG C); the novel alloy has good mechanical performance at normal temperature, the yield strength reaches 500-650 MPa or above, and the yield strength of the novel alloy is 10-96% higher than that of an AZ91D magnesium alloy, 7-60% higher than that of a six-series aluminum alloy and 60-110% higher than that of dual-phase steel; and the elongation rate exceeds 20-30%, is 100-200% higher than that of an AZ31B magnesium alloy and is 67-150% higher than that of a six-series aluminum alloy, and the elongation rate is equivalent to that of dual-phase steel.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY

Method for continuously preparing 5-hydroxymethylfurfural aqueous solution

The invention discloses a method for continuously preparing a 5-hydroxymethylfurfural aqueous solution. Comprising the following steps: mixing a glycosyl biomass raw material, an inorganic salt, an acidic catalyst, an organic solvent and water, enabling the solution to flow through a heat exchanger, continuously reacting, and extracting the reacted organic phase by using water as an extracting agent after the reaction to obtain a water solution of 5-hydroxymethylfurfural; according to the method, the added organic solvent can effectively promote the 5-hydroxymethylfurfural to enter an organic phase in the generation process and inhibit the generation of a side reaction of generating black rot substances, the production efficiency and the conversion rate of the reaction can be effectively improved in a continuous reaction mode compared with a batch-type reaction mode, a water solution of the 5-hydroxymethylfurfural is obtained through water phase extraction, and the yield of the 5-hydroxymethylfurfural is improved. High-energy-consumption operation processes such as reduced pressure distillation are not needed, and the organic solvent can be recycled.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES