1087results about How to "Simple preparation process" patented technology

The invention relates to a fiber-reinforced aerogel composite material containing a carbon and titanium dioxide biphase hybrid opacifying agent as well as a preparation method and application of the fiber-reinforced aerogel composite material. The fiber reinforced aerogel composite material containing the carbon and titanium dioxide dual-phase hybrid opacifying agent comprises an inorganic aerogel matrix, wherein a reinforced fiber skeleton and the carbon / titanium dioxide dual-phase hybrid opacifying agent are dispersed in the inorganic aerogel matrix; the carbon / titanium dioxide biphase hybrid opacifying agent comprises a titanium dioxide shell layer and carbon / titanium dioxide core-shell structure particles, wherein the surface of a reinforced fiber skeleton is coated with the titanium dioxide shell layer in situ; gaps of the reinforced fiber skeleton are filled with the carbon / titanium dioxide core-shell structure particles. The problem to be solved is to construct a two-phase hybrid shading system in which carbon / titanium dioxide core-shell particles and a titanium dioxide coating layer on the fiber surface are combined through one-step in-situ synthesis, so that the heat insulation capacity of the composite material in a high-temperature environment is synergistically improved.

The invention discloses an Mg + Nb co-doped TiO2 giant dielectric ceramic material and a preparation method thereof, and relates to the technical field of giant dielectric materials. The (Mg + Nb) co-doped TiO2 ceramic is successfully prepared by adopting a traditional solid phase method, the performance of the TiO2-based giant dielectric ceramic is regulated and controlled through a new doping strategy, the raw material is single, the preparation process is simple, the cost is low, the repeatability is good, the yield is high, the obtained ceramic material has giant dielectric performance, and the preparation method is suitable for industrial production. The (Mg + Nb) co-doped TiO2 novel giant dielectric ceramic can meet the requirements of a dielectric material with high dielectric constant, low dielectric loss and good temperature and frequency stability, and compared with other widely applied giant dielectric materials, the titanium dioxide-based giant dielectric ceramic has the characteristics of simplicity in preparation and excellent dielectric property.

This invention relates to a highly efficient functional ceramsite for purifying phosphorus-containing wastewater, its preparation method, and its application. Based on a complementary functional strategy, it uses natural clay rich in Al2O3 and SiO2 as a binder and calcium-rich industrial solid waste as the calcium-rich active component. Functional additives are also added to mitigate pH changes caused by calcium oxide reactions. The above raw materials are calcined at high temperature to obtain inexpensive, calcium-rich functional ceramsite with high mechanical strength, large adsorption capacity, and ecological safety. This effectively solves the common problems of increased water pH and poor phosphate adsorption capacity at neutral pH in calcium-based ceramsite, achieving highly efficient phosphorus purification in water. This invention uses inexpensive and readily available natural clay and calcium-rich industrial solid waste as raw materials, resulting in low cost, good effect, and effective application in the treatment of low-pollution water.

The invention discloses a TBC battery structure, a preparation method thereof and a TBC battery, in the structure, a P region and an N region are respectively provided with a P-type / N-type doped polycrystalline silicon passivation layer, and an oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region. The preparation method comprises the step of preparing the P-type / N-type doped polycrystalline silicon passivation layer and the oxygen-doped polycrystalline silicon layer on the P region and the N region. In the structure, the oxygen-doped polycrystalline silicon layer is arranged between the P region and the N region, so that the P region and the N region can be effectively separated, an excellent shadow shielding resisting function of a corresponding assembly can be realized, and the generating capacity of the assembly in a shadow shielding environment can be further improved. According to the preparation method, the design of depositing multiple tunneling oxide layers and polycrystalline silicon layers at a time, the design of a laminated mask, a new isolation mode, an efficient cleaning process and the like are adopted, the problems that an existing TBC battery preparation process is tedious, boron-doped polycrystalline silicon laser ablation residues exist, the investment and generation cost is high and the like are effectively solved, and the preparation method is a brand-new TBC battery route.

The invention discloses a composite catalyst for a peracetic acid activation system and a preparation method and application thereof, and relates to the technical field of advanced oxidation water treatment. The preparation method of the catalyst comprises the following steps: preparing an aqueous solution of a cobalt source as a precursor solution; adding a manganese source into the precursor solution to obtain a Co-Mn mixed salt solution; adding a complexing agent into the Co-Mn mixed salt solution to form a stable sol system; heating the sol system at constant temperature to obtain wet gel; drying the wet gel to obtain a porous dry gel precursor; calcining the porous xerogel precursor, and then cooling and grinding to obtain the composite catalyst for the peracetic acid activation system. The composite structure in the catalyst greatly improves the rate of generating hydroxyl radicals and organic oxygen radicals by decomposing peracetic acid by promoting electron transfer circulation of a metal active center, shows good structural stability and recyclability, and is especially suitable for degradation of an organic pollutant sulfamethoxazole in a water body.

The invention discloses an etching solution and a preparation method and an etching method thereof, and belongs to the technical field of microelectronics and display panel manufacturing. The etching liquid comprises the following components in percentage by mass: 50-70% of phosphoric acid, 5-30% of acetic acid, 5-15% of nitric acid, 0.1-0.5% of a water-soluble polymer, 0.05-0.3% of a boron-containing compound, 0.05-0.5% of an etching control agent and the balance of water. The water-soluble polymer is selected from one or more of water-soluble polymers containing a hydroxyl group, an amide group, an ether bond or a pyrrolidone group. The etching solution contains a specific water-soluble polymer, a protective layer can be formed on the surface of the photoresist, attack of high-concentration acid to the etching solution is effectively inhibited, and the cracking problem is avoided; meanwhile, through the synergistic effect of the boron-containing compound and the azole etching control agent, the etching rate, the slope angle and the key size loss can be accurately controlled, and therefore the excellent etching morphology meeting the requirement is obtained.

The utility model provides equipment for sewing four edges of a throw pillow case. The equipment comprises a cloth feeding mechanism, a short edge sewing mechanism, a cutting mechanism and a long edge sewing mechanism, the cloth feeding mechanism comprises a first cloth placing frame, a second cloth placing frame and a cloth overlapping module; the short edge sewing module comprises two first sewing machines and two second sewing machines; the cutting mechanism comprises a cloth pulling frame and a cutting knife, and the cloth pulling frame comprises a movable cloth pulling clamp; the long edge sewing mechanism comprises a platform, a movable cloth moving rod is arranged above the platform, and third sewing machines are arranged at the two ends of the platform. Two rolls of cloth are placed on the first cloth placing frame and the second cloth placing frame respectively and overlapped through the cloth overlapping module. Cloth is sewn on the two sides through the two first sewing machines, then the two sides of the cloth are sewn towards the middle by a certain distance through the two second sewing machines, then the cloth is moved to the platform through the cloth pulling clamp to be cut, finally, the cloth is pushed by the cloth moving rod to be pressed and fixed towards the cloth pressing rods on the two sides, the bolster sleeve is formed through sewing of the third sewing machine, and the overall equipment structure and the manufacturing process are simple.

The invention relates to an oxygen evolution catalyst for hydrogen production through electrolysis of proton exchange membrane water, a membrane electrode and a preparation method of the membrane electrode, and the oxygen evolution catalyst is iridium oxide in a nanoparticle form and contains 2-2.5% of crystal water; the preparation method of the catalyst comprises the following steps: carrying out ultrasonic treatment on an iridium salt solution, mixing the iridium salt solution with magnesium sulfate and water, carrying out ultrasonic treatment, volatilizing a solvent, drying, carrying out ball milling to obtain powder, carrying out high-temperature calcination, dissolving with dilute acid, carrying out suction filtration with water and ethanol until the conductivity is less than 10 [mu] s / cm, carrying out vacuum drying to remove moisture, and grinding to obtain the catalyst. The membrane electrode comprises the catalyst powder prepared by the method and an anode catalyst layer formed by perfluorinated sulfonic acid resin; and the cathode catalyst layer is formed by Pt / C and perfluorosulfonic acid resin. The oxygen evolution catalyst provided by the invention has high activity and high stability, magnesium sulfate is adopted in the preparation method, and the oxygen evolution catalyst has the advantages of simple operation, low cost and the like.

The invention relates to the technical field of nano materials and biomedical engineering, and discloses a dye-sensitized rare earth up-conversion luminescent nano material as well as a preparation method and application thereof. The dye-sensitized rare earth up-conversion luminescent nano-material comprises a rare earth doped up-conversion nano-particle core, an unsaturated fatty acid salt self-assembled shell layer and a near-infrared dye modified on the surface of the rare earth doped up-conversion nano-particle. The unsaturated fatty acid salt coating layer endows the material with excellent water dispersibility through a hydrophilic group; a hydrophobic chain segment and an unsaturated double bond can effectively block water and oxygen permeation and quench singlet oxygen, so that the photobleaching half-life period of the material is increased by 86.7 times or more compared with that of a conventional coating material, and the light stability is excellent; the material successfully realizes efficient up-conversion luminescence under excitation of a low-power near-infrared light emitting diode (NIR LED, the power density of which can be as low as 100mW / cm < 2 >), and thoroughly gets rid of dependence on a high-cost and high-risk laser.

The invention discloses PSE-like chicken breast composite gel soft food suitable for people with dysphagia and a preparation method of the PSE-like chicken breast composite gel soft food, and belongs to the field of food processing. The raw materials of the composite gel soft food comprise PSE-like chicken breast, konjac glucomannan and a sodium chloride solution, and the preparation method comprises the following steps: adding a mixed solution of konjac glucomannan and sodium chloride into PSE-like chicken breast, stirring, carrying out heating treatment after uniform stirring, and then cooling to obtain the PSE-like chicken breast composite gel soft food. The prepared food is stable in total protein content, can effectively make up for insufficient intake of meat protein caused by limited feeding of people with dysphagia, and prevents malnutrition; the product texture meets the swallowing requirement, reaches the IDDSI level 5 or level 6 standard, can effectively reduce the risk of food residue and aspiration in the swallowing process, and has nutrition balance and food safety.

The present application relates to the technical field of traditional Chinese medicine compositions, and specifically discloses a traditional Chinese medicine composition with the effects of stopping sweating and promoting fluid production and a health-care beverage. The composition is prepared from raw licorice, schisandra chinensis, radix codonopsis, momordica grosvenori, coix seed, poria cocos, edible salt, glucose, mint, raw ginger, honeysuckle, bamboo leaf, radix trichosanthis, celtis bungeana, white cardamom in a specific weight ratio. The composition uses schisandra chinensis as the monarch herb to stop sweating and promote fluid production, radix codonopsis and raw licorice to supplement qi and consolidate the exterior, radix trichosanthis, bamboo leaf and celtis bungeana to clear heat and promote fluid production, coix seed, poria cocos and white cardamom to invigorate the spleen and eliminate dampness, honeysuckle and mint to clear away summerheat, raw ginger to warm the center and prevent cold, and momordica grosvenori to harmonize the taste and supplement electrolytes and energy. The composition can be used to prepare an oral health-care beverage, has the effects of stopping sweating and promoting fluid production, supplementing qi and consolidating the exterior, and supplementing electrolytes, is suitable for scenes of excessive sweating, thirst and fatigue, has a good taste, is safe, and is simple to prepare.

The invention discloses a bimetallic oxide supported catalyst as well as a preparation method and application thereof. The bimetallic oxide supported catalyst comprises a bimetallic oxide carrier and a metal active component supported on the surface of the bimetallic oxide carrier; the bimetallic oxide carrier contains a divalent metal element oxide and a trivalent metal element oxide; the divalent metal element oxide is selected from at least one of oxides of Mg, Ca, Sr, Zn and Mn; the trivalent metal element oxide is selected from at least one of oxides of Al, In, Fe, Cr and Ce; the metal active component is selected from at least one of Pd, Pt, Ru, Ni and Co; in the bimetallic oxide supported catalyst, the mass of the metal active component is 0.1-20 wt% of the mass of the metal oxide carrier.

The invention discloses a swelling microneedle patch and a preparation method thereof. The swelling microneedle patch comprises a backing and a swelling microneedle array adhered to the backing, the swelling microneedle array comprises a plurality of microneedles; the microneedle is in the shape of a cone or a rectangular pyramid; the height of the microneedle is 100 to 1000 [mu] m; the diameter of the tip end of the microneedle is 5-30 microns; the diameter of the bottom of the microneedle is 50-500 [mu] m; and the center-to-center distance between every two adjacent microneedles is 50-2000 microns. The swelling microneedle patch provided by the invention can overcome the barrier action of cuticle to penetrate subcutaneously and absorb subcutaneous tissue interstitial fluid, and is simple in preparation process, low in cost and high in universality. The patch is combined with a colloidal gold lateral chromatography test strip, so that the limitations that in-vitro diagnosis of infectious diseases depends on a blood sample, professional medical personnel are needed for operation, the subject compliance is poor and the like can be solved, and the patch is suitable for rapid screening and diagnosis of the infectious diseases.

The present application belongs to the technical field of medicine, and particularly relates to a traditional Chinese medicine composition and application thereof in preparation of an oral care product. The traditional Chinese medicine composition is prepared from 12-18 parts of Qingdai, 7-12 parts of raw gypsum, 7-12 parts of Huangqi, 9-15 parts of Gushugu, 3-7 parts of Honghuajiao, 3-7 parts of Baizhi, 6-10 parts of Fangfeng, 1-5 parts of Bajie, 6-10 parts of Huanylencao, 1-5 parts of Wuji, and 4-8 parts of Baiji as raw medicinal materials. The components of the composition are reasonably matched, and can realize multiple effects of analgesia, antibiosis, anti-inflammation, repair, and tooth fixation and health. The present application is suitable for all kinds of toothache patients, has a wide application range, a safe use mode, and a wide market application prospect.

This invention discloses an early-strength, high-stability road grouting repair material and its preparation, belonging to the field of solid waste utilization and road grouting reinforcement technology. The raw materials of the early-strength, high-stability road grouting repair material of this invention include multi-source solid waste aggregates and a water-reducing agent; the multi-source solid waste aggregates, by mass percentage, include: 6.6 wt% fly ash, 5-15 wt% rapid-hardening sulfoaluminate cement, 64-74 wt% mineral powder, 13.4 wt% desulfurized gypsum, and 1% carbide slag. This invention constructs a quaternary solid waste system of fly ash-desulfurized gypsum-mineral powder-carbide slag, synergistically forming a slurry composite system with rapid-hardening sulfoaluminate cement and a water-reducing agent, and precisely controls the concentration of raw materials. During hydration, this system can generate supporting crystals, which not only provide high early-stage stone strength for the road grouting material, but also, due to its good stability, ensure high stone strength stability in the later stages.

The utility model discloses a kind of elbow production mould of magnetic connection and elbow with inner liner, belong to pipeline production technical field, mould includes mould shell, first mould cover and second mould cover, mould cover is placed in pipe body, first mould cover and second mould cover are fixed at the both ends of pipe body.Mould shell includes first module, second module, third module, fourth module and fifth module, first module and second module are respectively located at the both ends of pipe body, first module extends pipe body, second module and second mould cover sealing connection, third module, fourth module and fifth module are located at the intermediate position of pipe body, fifth module is between third module and fourth module, third module, fourth module and fifth module are magnetically attracted and connected, third module, fourth module and fifth module are magnetically attracted and connected with first module and second module.The utility model provides a kind of elbow production mould of magnetic connection, dismounting is convenient, the manufacturing process of mould is simple, and moulding is more accurate.

This invention belongs to the field of functional substance research, specifically relating to the use of casein hydrolyzed peptide compositions in improving aging, and more specifically to their use in the preparation of products for improving aging. The casein hydrolyzed peptide compositions are obtained by enzymatically hydrolyzing casein solution using serine protease and flavor protease. Furthermore, in the casein hydrolyzed peptide compositions, the relative strength of total functional peptides is above 25%, the relative strength of casein phosphopeptides is above 9%, and the relative strength of functional peptides other than casein phosphopeptides is above 11%. This casein hydrolyzed peptide composition can effectively alleviate oxidative stress caused by aging, inhibit chronic low-grade inflammation, reduce aging-related damage to vital organs such as the liver and brain, improve the body's immune function, and improve the external phenotype of aging, thereby comprehensively exerting an anti-aging effect.

The invention discloses an ultrathin silicon-based flexible sensor and a preparation method, and relates to the technical field of bioelectronics and flexible sensing. The device specifically comprises a flexible substrate; the monocrystalline silicon thin film layer is combined on the surface of the flexible substrate; the monocrystalline silicon thin film layer is of a patterned structure and comprises at least one gas sensing area; wherein the gas sensing area utilizes the doped monocrystalline silicon surface to adsorb gas molecules to be detected, and is configured to detect gas based on carrier concentration change caused by surface adsorption. The invention aims to develop a flexible sensor which has intrinsic flexibility, high sensing performance and biocompatibility and can synchronously realize gas and mechanical signal detection.

This invention relates to a stacked high-temperature superconducting cable with transposition joints and non-twisted strips. The stacked high-temperature superconducting cable includes a transposition joint section and a simple stacking section; the transposition joint section and the simple stacking section are connected; the strip includes a bridged portion and a main body connected to the bridged portion; the transposition joint section includes a bridging tape group and the bridged portion of the strip; the simple stacking section includes the main body of two strips; the main body of each strip includes the main body of multiple stacked strips; the main body of the two strips are arranged side by side. Compared with the prior art, this invention achieves the transposition of the strips in the cable through the design of stacked strips and welded transposition joints, solving the problem of inductance imbalance between each strip after winding the coil in a simple stacked cable; secondly, this invention eliminates the need for spiral twisting of the strips or extensive cutting of the superconducting strips in the manufacturing process, making the manufacturing process simple and economically cost-effective.

The present application relates to the technical field of plant science, and particularly relates to a device and method for measuring the anatomical structure of plant fine roots without thin sectioning. By directly staining, stably positioning and microscopically observing the cross section of fine roots, clear and complete anatomical images of the cross section of fine roots can be obtained without dehydration, embedding and ultrathin sectioning, and reliable measurement of anatomical parameters can be realized. The steps of fixing, dehydrating, embedding and ultrathin sectioning are omitted, the sample preparation process is significantly simplified, the time from processing to imaging is shortened, the overall measurement efficiency is improved, and the device is suitable for multi-sample and batch analysis scenarios. Under the premise of ensuring the reliability of the identifiable and measurable anatomical structure, the process is simplified, the efficiency is improved and the cost is reduced, and the device has good technical value and application prospect.

The invention relates to the technical field of adsorbent materials, and discloses a CoMn2O4 spinel adsorbent and a method for removing trivalent antimony in a water body by using the CoMn2O4 spinel adsorbent. The adsorbent is prepared by adopting a co-precipitation and low-temperature thermally induced crystallization synergetic green process: dissolving cobalt salt and manganese salt according to a stoichiometric ratio, dropwise adding a sodium hydroxide solution for co-precipitation, washing an obtained precursor, and drying at 80-120 DEG C under normal pressure for 12-48 hours to directly obtain the adsorbent. According to the method, the spinel material with low crystallinity, high specific surface area and rich surface hydroxyl is controllably synthesized by regulating and controlling the concentration of the precipitator and the drying condition, and the problems of active site loss and high energy consumption caused by traditional high-temperature calcination are avoided. When the composite material is used for treating wastewater containing trivalent antimony, antimony ions can be efficiently removed through the adsorption effect under the appropriate pH condition, excellent adsorption capacity is shown, the technology is simple, cost is low, safety is good, and an efficient and stable adsorption material and a feasible method are provided for water body antimony pollution treatment.

The invention is suitable for the technical field of materials, and discloses silica gel and a preparation method thereof, and a silica gel product and a preparation method thereof. Wherein the silica gel comprises a first component and a second component, the first component comprises a base material, a reinforcing agent, a modified filler, titanium dioxide and a vulcanizing agent, and the second component comprises a base material, a reinforcing agent, a modified filler, titanium dioxide, a cross-linking agent and a polymerization inhibitor. The silica gel provided by the invention not only has better mechanical properties, but also has a small friction coefficient, when the silica gel is in contact with skin, the adhesion feeling is low, the smooth effect is good, and the smooth feeling and the skin-friendly property are improved. Moreover, two components, namely the first component and the second component, are arranged, the first component and the second component are stored separately, the material is easy to store and stable in performance, the service life of the product can be prolonged, in addition, the material preparation and forming process is simple, the vulcanization time is short, and the production efficiency is greatly improved.

The application provides a high-strength rare earth magnesium alloy based on a room-temperature rotary swaging composite process and a preparation method thereof.The method comprises the following specific steps: according to designed components, raw materials are smelted to obtain a semi-continuous casting ingot, the rare earth magnesium alloy ingot is subjected to homogenization treatment, then is preheated and kept warm to be subjected to differential temperature extrusion, the extruded rare earth magnesium alloy is subjected to multi-pass rotary swaging treatment with a small deformation at room temperature, and finally is subjected to artificial aging treatment.Through the composite process with the room-temperature rotary swaging, the grains can be refined, the texture can be improved, and a large number of dislocations and twins can be introduced into the grains, so that the nucleation sites and precipitation power of precipitated phases in the aging process are improved, the aging strengthening capacity is more excellent, and the high-strength rare earth magnesium alloy is obtained.The application of the light-weight high-strength rare earth magnesium alloy in the fields of aerospace, rail transportation and automobiles can be accelerated.

The application provides an oil-based multi-walled carbon nanotube slurry as well as a preparation method and application thereof. The oil-based multi-walled carbon nanotube slurry comprises 1-23% by mass fraction of multi-walled carbon nanotubes, 0.1-5% by mass fraction of sodium 4-styrenesulfonate, 0.5-35% by mass fraction of polyvinylidene fluoride and 57-98.4% by mass fraction of N-methylpyrrolidine. The multi-walled carbon nanotubes in the oil-based slurry are uniformly dispersed, and the multi-walled carbon nanotubes exist in a monodisperse form and are not prone to agglomeration. The oil-based multi-walled carbon nanotube slurry has stable physical and chemical properties, can be stored for a long time and is not prone to stratification. The oil-based slurry can be directly used in the homogenization process of the oil-based slurry, the multi-walled carbon nanotubes in the pole piece prepared after coating are uniformly distributed, the preparation process of the oil-based slurry is simple, the system temperature in the preparation process is constant and controllable, and the oil-based slurry can be prepared and applied on a large scale.

The application provides a preparation method of a binder, the binder is prepared from modified polyacrylonitrile through a cross-linking reaction and post-treatment; the modified polyacrylonitrile is a hydrolysis product of polyacrylonitrile, and the cross-linking agent of the cross-linking reaction is epichlorohydrin. The application also provides corresponding binders, lithium ion battery negative electrodes, lithium ion batteries and electrochemical devices. The binder of the application can significantly improve the cycle stability and rate performance of the battery, and the effect is particularly significant for a silicon negative electrode with large volume expansion. The preparation process of the binder of the application has the advantages of simple operation and low cost, and is easy to realize industrial production.

The application discloses a kind of eutectic solvent and its preparation method and application, the eutectic solvent is used for the dissolution, separation or regeneration of cellulose and / or starch, the eutectic solvent includes first solvent, second solvent and water;The first solvent is selected from at least one of the compounds shown in formula 1.The eutectic solvent of the application has very good solubility for cellulose and / or starch, can quickly dissolve a large amount of cellulose and / or starch, is suitable for the dissolution, separation and regeneration of cellulose and / or starch, etc., and is low in cost, easy to prepare, the raw materials used are all harmless to the environment, can be recycled, is an environmentally friendly solvent system.

This invention relates to the field of polymer materials technology, specifically disclosing a flame-retardant thermoplastic elastomer compound and its preparation method. The flame-retardant thermoplastic elastomer compound comprises 50-80 parts SEBS, 10-30 parts PP, 5-15 parts compatibilizer, 10-30 parts composite flame retardant, 3-10 parts plasticizer, 0.2-1 parts antioxidant, and 0.1-0.5 parts lubricant. The composite flame retardant is prepared by reacting and mixing an intumescent flame retardant, barium metaphosphate, boron nitride, triallyl isocyanurate, and SEBS. The flame-retardant thermoplastic elastomer compound of this application possesses good flame retardancy, mechanical properties, and water resistance stability.

The present application relates to a kind of taste sensor based on electrical signal, preparation method and its detection method.Taste sensor device structure is constituted by one metal / metal oxide functional electrode and three Ag / AgCl electrodes deposited on substrate, wherein metal layer and Ag electrode are deposited on substrate by evaporation deposition, and metal oxide functional layer and AgCl layer are formed on it by electrochemical method, and taste simulation and identification function are realized by measuring the potential between metal / metal oxide functional electrode and Ag / AgCl electrode and the conductance and alternating current impedance between the other two Ag / AgCl electrodes.The taste sensor of the present application has the characteristics of simple preparation process, fast measurement response and wide application, etc.

The application discloses a MgO-based catalyst synthesis method and application thereof, relates to the technical field of catalyst preparation, and comprises the following steps: dissolving magnesium salt, lanthanum salt, cerium salt, calcium salt and nickel salt in deionized water, stirring uniformly to obtain a metal salt solution; adding citric acid into the metal salt solution and stirring intensively until uniform to form a mixed gel; pouring the mixed gel on a medium-speed qualitative filter paper, transferring and drying to obtain a dry gel; roasting the dry gel with the filter paper, grinding the roasted dry gel with a mortar to obtain a grinding powder; and transferring the grinding powder to a muffle furnace for calcination to obtain a uniform composite metal oxide catalyst; the MgO-based catalyst is prepared by combining the dry gel method with the combustion decomposition method, the preparation process is simple, the conditions are easy to control, the preparation process is easy to repeat, the product pollution risk caused by the introduction of sodium hydroxide precipitator is eliminated, the preparation cost and process difficulty are reduced, and the method is suitable for large-scale production. + ​

This application relates to the field of nanomaterial assembly technology, and discloses a copper-gold complex nanowire film, its preparation method, and its applications. The preparation method of the copper-gold complex nanowire film includes: dissolving a soluble copper salt, a reducing agent, and sodium dodecylbenzenesulfonate in water to obtain a first precursor solution; dissolving potassium gold cyanide in water to obtain a second precursor solution; slowly adding the second precursor solution to the first precursor solution to carry out a self-assembly reaction; collecting the solid phase; washing, centrifuging, and drying to obtain the copper-gold complex nanowire film. The preparation process of this application is simple, the reaction conditions are mild, the reproducibility is good, the yield is high, and the cost is low, significantly reducing the difficulty of nanowire film formation and realizing the large-scale, low-cost preparation of copper-gold complex nanowire films. The copper-gold complex nanowire film of this application uses copper-gold complex nanowires with uniform size distribution, diameters of 20–40 nanometers, and lengths in the micrometer range as assembly units, exhibiting a high specific surface area and good structural stability.