48results about How to "Help transfer" patented technology

The invention relates to a vision-touch fused augmented reality oral surgery skill training simulator. The vision-touch fused augmented reality oral surgery skill training simulator comprises a simulation training platform based on construction of a simulation head model, an oral cavity operation training system based on force feedback equipment and an observation system based on an augmented reality helmet. A virtual oral cavity model is generated based on patient oral cavity CBCT data and scanning data, and a virtual oral cavity environment is constructed; based on feature points on the virtual oral cavity model and the simulation head model, space matching for a virtual oral cavity and an oral cavity model is carried out; in a virtual oral cavity surgery simulation method, force sense information and vision information are output with the frequency of not lower than 1000 Hz and 60 Hz respectively; a simplified vision information processing method is carried out on gridding data; anda force sense-vision space calibration method for calibrating output force direction is carried out based on the head information of an operator. The system solves the problems of material consumption and single practice case in traditional oral cavity training; and compared with an existing digital training scheme, the system strengthens operation immersion by means of augmented reality technology, and accords with clinic operation habit preferably.

The invention relates to a contact with a fixed fracture and having short-circuit current breaking capability and a vacuum arc extinguishing chamber. The contact comprises a group of fixed fracture contact and a group of movable fracture contact, wherein the movable fracture contact is arranged inside the fixed fracture contact when being in a switching-off state. The vacuum arc extinguishing chamber comprises the contact, a shell and a shielding cover, and the contact is provided with the fixed fracture and has short-circuit current breaking capability. By the contact and the vacuum arc extinguishing chamber, the problems of structure complexity of a traditional composite magnetic field contact structure and other vacuum arc extinguishing chambers with regard to capacity current breaking design are solved, deficiency of magnetic field control on vacuum arc and the like are solved; the electric field shielding and protection of the fixed fracture contact on the movable fracture contact are achieved, and the influence of defects formed on the surface of the movable fracture contact on breakdown during the capacitive closing process is avoided; the breaking function and the insulation function are separated, the breaking function is achieved by the composite magnetic field contact, the insulation function is achieved by the fixed contact, and the contact can be used for breaking short-circuit current and also can be used for switching capacitive current such as reactive compensation field of capacitor bank switching and the like.

The invention belongs to the field of electrocatalysts, and particularly relates to a preparation method and applications of a high-performance carbon-based composite catalyst for producing hydrogen by electrochemically decomposing water, wherein the Ru / NC electrocatalyst is obtained by using nitrogen-doped carbon (NC) synthesized through complexing, calcining and acid washing as a substrate material and using ethylene glycol as a reducing agent under a reflux condition. According to the invention, the electrocatalyst material has low charge transfer resistance and reaction barrier of hydrogenevolution reaction, and has excellent performance in electrocatalytic hydrogen evolution reactions; Ru has the lowest price in Pt series precious metal materials, so that the catalyst is low in cost;and the obtained catalyst is simple and convenient in experimental operation, simple in process and excellent in catalytic performance, and provides the basic application research for the materials in the field of electro-catalysis.

The invention belongs to the field of photocatalytic thin films and in particular relates to an embedded type TiO2 hollow sphere / GaN / Ga2O3 heterojunction photocatalytic thin film and a preparation method thereof. The embedded type TiO2 hollow sphere / GaN / Ga2O3 heterojunction photocatalytic thin film is prepared from ITO (Indium Tin Oxide) transparent conducing glass, a beta-Ga2O3 thin film locatedon the ITO transparent conducing glass, a GaN thin film located on the beta-Ga2O3 thin film, a beta-Ga2O3 / GaN heterojunction thin film located between the beta-Ga2O3 thin film and the GaN thin film and a TiO2 hollow sphere embedded in the beta-Ga2O3 / GaN heterojunction thin film. The photocatalytic thin film provided by the invention has a three-dimensional space multi-phase heterojunction interface structure and comprises a TiO2 / Ga2O3 heterojunction interface, a TiO2 / GaN heterojunction interface, a GaN / Ga2O3 heterojunction interface and a TiO2 / GaN / Ga2O3 heterojunction interface; the heterojunction interfaces have a mutual synergistic effect and photon-generated carriers can be effectively separated so that the photocatalytic performance of the material is greatly improved; the photocatalytic efficiency of degrading Rhodamine B is high and the photocatalytic efficiency keeps constant after a plurality of times of circulation; the embedded type TiO2 hollow sphere / GaN / Ga2O3 heterojunctionphotocatalytic thin film provided by the invention has stable performance and has a very great application prospect in the field of photocatalytic degradation of organic pollutants.

The invention discloses a preparation method and application of a core-shell structural magnetic nano composite catalyst. The method comprises the following steps: step 1, dissolving a metal salt X containing Fe<2+> and a metal salt Y containing Co<2+> into deionized water, and performing uniform stirring to obtain a mixed liquid A; step 2, removing dissolved oxygen in the mixed liquid A by ultrasonic vibration or suction filtration to obtain a mixed liquid B; step 3, adding a NaOH solution dropwise into the mixed liquid B to obtain a mixed liquid C; step 4, performing reflux on the mixed liquid C under heating and stirring, allowing the liquid to stand, taking out a product, performing alternated washing for a plurality of times by using deionized water and absolute ethanol, performing drying, and performing grinding to obtain a powdery magnetic cobalt iron hydroxide; and step 5, performing calcination on the powdered magnetic cobalt iron hydroxide, performing grinding, and performingsieving to obtain the core-shell structural magnetic nano composite catalyst using Co3O4 as a shell and CoFe2O4 as a core. The preparation method provided by the invention has a simple and easily-operated process, and can realize microscopic regulation on the morphology of the composite catalyst, and forms a core-shell structure, thereby facilitating electron transfer in a catalytic reaction process.

The invention provides a preparation method of a nickel-loaded SiO2@C core-shell material. The preparation method comprises the steps: firstly, utilizing a traditional St-ber method to synthesize a silicon dioxide template; then preparing SiO2@RF / Ni by an in situ polymerization method; roasting in hydrogen-argon mixed gas to obtain a final catalyst SiO2@C / Ni. The preparation method has a simple process and can be used for preparing catalysts with different nickel loading amounts; furthermore, the catalyzing performance of the prepared catalyst is excellent and is even higher than that of mostprecious metal catalysts. The catalyst is a high-efficiency catalyst which has the advantages of economical performance, environmental friendliness, easiness in recycling and cycle use.

The invention provides a preparation method for sensitization-enhanced green light-emitting high-silica glass. The preparation method comprises the following steps: melting borosilicate glass, controlling heat treatment conditions, restricting the degree of phase-splitting and carrying out acid leaching so as to obtain porous glass which contains a part of residual Na <+> ions; dipping the porous glass in a solution containing Tb and Eu ions for immersion and doping; and sintering the porous glass at a high temperature in a reducing atmosphere so as to obtain the compact sensitization-enhanced green light-emitting high-silica glass. According to the invention, since a glass structure has Na <+>, energy transfer between ion is achieved and the excitation band of Tb<3+> ions is transferred and becomes about 320 nm instead of about 245 nm, thereby not only effectively increasing the excitation bandwidth of Tb<3+> but also greatly improving luminous intensity. The sensitization-enhanced green light-emitting high-silica glass prepared in the invention is expected to be used as a novel luminescence and laser material in a variety of fields like scientific research, national defense and health care.

The invention relates to a method for measuring the number of circulating epithelial tumor cells in blood. The method comprises the following steps that A, a blood sample of a test item is obtained from a test object, wherein the sample is anticoagulant whole blood possibly containing the epithelial tumor cells; B, negative enrichment is performed to remove non-target cells in the blood sample, and the non-target cells include red blood cells and most white blood cells; C, the enriched blood sample is mixed with a fluorescently-labeled antibody, and incubation is performed, so that target cells and a fluorescent antibody are sufficiently combined; D, an anti-fall glass sheet is coated with fluorescently-labeled cell suspension, still standing is performed for a moment, and observation is performed under a fluorescence microscope for analyzing samples, so that the existence and the number of the circulating epithelial tumor cells are determined; E, the observed target cells are stored as direct visual images. Compared with the prior art, the method has the beneficial effect that detection is favorable for tumor early-stage diagnosis, transfer and recurrence monitoring, curative effect and prognosis evaluation, drug-resistance monitoring, individual treatment guide and the like.

The invention relates to a bimetallic PtSn / C catalyst for a high-activity fuel cell as well as preparation and application of the bimetallic PtSn / C catalyst. The preparation method specifically comprises the following steps of (a) adding Pt (acac)2 and CTAB (cetyltrimethyl ammonium bromide) into oleylamine, carrying out ultrasonic stirring, and then adding W(CO)6 and SnCl2. 2H2O to form a reactionsystem for heating reaction, so as to obtain a bimetal PtSn material; and (b) after the reaction system is cooled to room temperature, washing the bimetal PtSn obtained in the step (a), loading the bimetal PtSn on activated carbon, and carrying out aftertreatment to obtain the bimetal PtSn / C catalyst. Compared with the prior art, the prepared catalyst has high catalytic activity and good stability, can be used as a direct methanol fuel cell anode catalyst, and is simple in preparation process.

The invention relates to the technical field of catalyst material preparation and particularly discloses a paper type catalyst and a preparing method thereof. The catalyst includes a composite carrierconsisting of modified sepiolite fibers and ceramic fibers and active components loaded by the composite carrier. The method includes subjecting sepiolite fibers to activation modification; then pulping the modified sepiolite fibers, ceramic fibers, an inorganic adhesive and an organic adhesive; pouring the obtained pulp into a paper sheet molding machine; performing vacuum suction filtration toremove water, molding, and calcination in a high-temperature furnace; soaking a product in an active-component salt solution; and roasting the product after the product is dried to obtain the paper type catalyst. The prepared catalyst has good mechanical properties. The sepiolite has high adsorbability so that a problem that active components in other catalysts are liable to lose can be avoided after active component loading, and fiber paper having a porous characteristic can provide more active sites for a catalytic reaction, thus improving reaction activity of the catalyst.

The invention relates to a healthy and comfortable sock production process. The process includes: proportioning polylactic acid fibers, wool and long stapled cotton according to a certain mass ratio, staggering and blending the polylactic acid fibers, the wool and the long stapled cotton, and carrying out drawing, roving, spinning and spooling to obtain breathable yarns, wherein the wool accounts for, by weight, 4-7% of the yarns, the polylactic acid fibers account for, by weight, 30.8-31.6% of the yarns, and the long stapled cotton accounts for, by weight, 64.5-65.4% of the yarns. The yarns are excellent in dimensional stability, convenient to process, better than polyester in glossiness, fluffy to touch, hydrophobic and less prone to sticking to skin; moisture transfer is facilitated, dry sensation in contact with skin is achieved, and excellent dimensional stability and wrinkle resistance are realized.

The invention relates to a flexible gas sensitive sensor based on a gallium oxide / zinc gallate hetero-junction nano-array and a preparation method thereof. The flexible gas sensitive sensor comprisestwo Ti / Au (Titanium Gold) electrodes, a flexible glass fiber cloth substrate, a ZnGa2O4 film located on the flexible glass fiber cloth substrate, and a beta-Ga2O3 nano-column array located on the ZnGa2O4 film; the two Ti / Au electrodes are respectively located above the ZnGa2O4 film and the beta-Ga2O3 nano-column array; the gallium oxide / zinc gallate hetero-junction nano-array is formed by the ZnGa2O4 film and the beta-Ga2O3 nano-column array. The sensor provided by the invention is an MSSM type hetero-junction flexible gas sensitive sensor in a Ti / Au / beta-Ga2O3 / ZnGa2O4 / Ti / Au structure, has a three-dimensional space hetero-junction interface structure, is stable in gas sensitive characteristics, flexible and bendable and low in working temperature and power consumption, can be used for detection of flexible wearable ethanol gas, and has great application prospects in fields such as production and monitoring of industrial alcohol and detection of drunk driving.

The invention relates to the field of containers, in particular to a power generation type container house. According to the technical point, the power generation type container house comprises a container house body and a power generation part. A storage battery is connected with a power transmission flexible conduit and life layer inner power consumption equipment correspondingly; the power generation part comprises a power generation conduit, the power generation conduit floats on the sea water, one end of the power generation conduit is connected with a flange, the other end of the power generation conduit is an opening, and the inner wall of the power generation conduit is covered by a piezoelectric layer. The other end of the power transmission flexible conduit penetrates through the flange to enter the inner cavity of the power generation conduit, and is connected with the opening end of the power generation conduit through power transmission branch conduits. The power transmission branch conduits are connected with the piezoelectric layer through an electric energy collector, and through holes are evenly formed in the flange. By adoption of the power generation type container house, the problems that, at present, household electricity supplied to inshore construction companies is difficult, logistics cost of the construction companies is increased by using movable electricity-storage equipment to supply power because more labor is needed to transport the equipment, cost of equipment is high by using small-sized fuel oil generator, and air pollution in large and medium size cities is aggravated caused by setting off fuel oil to generate power, are solved.

The invention discloses a ceramic fiber-reinforced polyimide electric insulation composite material, which relates to the technical field of ceramic-based composite materials. The ceramic fiber-reinforced polyimide electric insulation composite material is prepared by the following steps: (1) polyacrylamide is adopted to modify nano-sericite, so that polyacrylamide-modified nano-sericite is obtained; (2) the polyacrylamide-modified nano-sericite is dispersed into absolute ethyl alcohol, polyimide powder is dispersed into the absolute ethyl alcohol, and thereby mixed dispersion is prepared; (3)the mixed dispersion is agitated at high speed under an ultrasonic field, grinding is then carried out, and after drying under high temperature, a mixed material is obtained; (4) the mixed material and ceramic fibers are mixed, and by die-pressing, the ceramic fiber-reinforced polyimide electric insulation composite material is obtained. According to the ceramic fiber-reinforced polyimide electric insulation composite material provided by the invention, not only can the high temperature resistance and acid and alkali resistance of the material be remarkably improved, but also the elongation of the material is improved.

The invention discloses a battery diaphragm coating material, a preparation method thereof, a battery diaphragm and a battery. The battery diaphragm coating material comprises a binder and a filling porous material, the filling porous material comprises porous carbon with a pore channel structure and filling particles filled in the pore channel structure, and the filling particles are used for promoting lithium ion migration. The pore channel structure of the porous carbon can build a bridge for rapid migration for lithium ions, so that the lithium ions can migrate in the pore channel structure of the porous carbon. Meanwhile, the pore channel structure of the porous carbon is filled with the filling particles, the filling particles can further promote lithium ion migration, then the formed battery diaphragm coating material has high ionic conductivity, the used porous carbon has a high specific surface area, and a space can be provided for electrolyte accumulation subsequently, so the liquid retention rate of the prepared battery diaphragm can be improved.

The invention relates to an ORR catalyst material, a preparation method of the ORR catalyst material, an application of the ORR catalyst material as a cathode material of a hydrogen-oxygen fuel cell or a metal-air cell, and the hydrogen-oxygen fuel cell or the metal-air cell. The ORR catalyst material is characterized by meeting the following general formula: Mx / N-C(1-x-y) / (CeO2)y (I), wherein thenoble metal M is one or more than two of Pt, Pd and Au, x and y are mass percentages, the range of x is 5%-6%, and the range of y is 4%-12%. The preparation method of the ORR catalyst material is characterized in that the catalyst precursor material is a noble metal acid radical doped conductive polymer composite material. The invention mainly solves the technical problems of non-uniform noble metal dispersion, poor catalytic performance, complex preparation method of the catalyst material, no environmental protection and high cost of the ORR catalyst material in the prior art.

The invention discloses a preparation method of 2,3-naphthalic acid, belonging to the technical field of preparation of organic compounds used as medical and liquid crystal intermediates. According to the preparation method, o-phthalaldehyde is used as a raw material, and through performing acetalation reaction, reducing reaction, hydrolysis reaction, cycloaddition reaction, dehydration reaction and hydrolysis reaction in sequence, finally the 2,3-naphthalic acid is prepared. The preparation method optimizes the reaction steps and conditions and has the advantages of reasonable synthetic route, high purity and yield of product, low production cost, low pollution, easy industrialization and the like.

The invention provides a CMOS image sensor and a manufacturing method. The CMOS image sensor comprises a P-type substrate, a P-type epitaxial layer and a plurality of pixel units, wherein the P-type epitaxial layer is formed on the P-type substrate, an N-type buried layer, a P-type clamping layer, the P-type buried layer and the P-type epitaxial layer form a clamping photodiode, the N-type buried layer, the P-type clamping layer and the P-type buried layer are all formed in the P-type epitaxial layer, the P-type clamping layer is formed above the N-type buried layer, the P-type buried layer is embedded into the N-type buried layer, the P-type buried layer comprises at least two P-type sub-buried layers, and the at least two P-type sub-buried layers are distributed in the depth direction of the P-type epitaxial layer. By using the P-type buried layer formed in the N-type buried layer, the width of a depletion region of the clamping photodiode is expanded, the PN junction capacitance is increased, and the quantum efficiency and the full well capacity of the pixel unit are improved, so that the sensitivity and the imaging performance of a pixel unit are improved, the N-type buried layer is easier to deplete before exposure, and the reset noise is reduced.

The invention discloses a preparation method of 2,3-naphthalic acid, belonging to the technical field of preparation of organic compounds used as medical and liquid crystal intermediates. According to the preparation method, o-phthalaldehyde is used as a raw material, and through performing acetalation reaction, reducing reaction, hydrolysis reaction, cycloaddition reaction, dehydration reaction and hydrolysis reaction in sequence, finally the 2,3-naphthalic acid is prepared. The preparation method optimizes the reaction steps and conditions and has the advantages of reasonable synthetic route, high purity and yield of product, low production cost, low pollution, easy industrialization and the like.

The invention discloses a resin colored tape suitable for multiple types of base materials and a preparation method of the resin colored tape, and belongs to the technical field of heat transfer printing consumables. The resin colored tape comprises a back coating layer, a base body, a pigment layer and a bonding layer which are sequentially attached from top to bottom. Wherein the pigment layer is composed of polyester resin, methacrylic resin, polyolefin resin, polystyrene resin, ethylene-vinyl acetate copolymer, wax and inorganic pigment; the bonding layer is composed of polyester resin, methacrylic acid resin and ethylene-vinyl acetate copolymer. The invention further discloses a preparation method of the resin colored tape suitable for the multiple types of base materials. According to the resin colored tape suitable for the multiple types of base materials, the problem that the adaptability of the base materials is not high is effectively solved, and the firmness and adaptability of transfer printing patterns are enhanced.

The invention discloses a peanut harvester having a stir-airing function. The peanut harvester comprises a case, a speed changing box arranged at the upper end of the case, a vibrating sieve arrangedinside the case, and an excavating head, wherein a seedling stirring device is arranged on the rear side of the vibrating sieve; the vibrating sieve is connected with the seedling stirring device through a driving chain; the front end of the seedling stirring device is arranged at the bottom of the vibrating sieve; the rear end of the seedling stirring device is close to the rear end of the case;both sides of the seedling stirring device are connected with the case; a material discharging support is arranged on the rear side of the seedling stirring device; the material discharging support isof an inclined plate type structure; both sides of the material discharging support are connected with the case; the upper end of the material discharging support is close to the seedling stirring device; rotating clearances for rotating the seedling stirring device are reserved between both sides of the upper half part of the material discharging support and the case; an earthing device is arranged on one side of the material discharging support; the earthing device is connected with the material discharging support; a ploughing device is arranged on the other side of the material discharging support; the ploughing device is arranged on the lower side of the seedling stirring device; and the ploughing device is connected with the material discharging support.

The invention relates to a preparation method and application of a copper-cobalt oxide loaded carbon nanofiber composite material, and belongs to the technical field of catalysis. The material is a compound of electrospun fibers and bimetal nanoparticles. The preparation method comprises the following steps of: putting polyvinyl alcohol into an aqueous solution containing copper-cobalt metal salt,stirring at constant temperature, and carrying out high-voltage electrostatic spinning and heat treatment to form a bimetallic oxide nanoparticle catalyst. The invention also provides an applicationof the composite material in degradation of a high-toxicity pollutant 4-nitrophenol in a water body. On one hand, fibers obtained through a simple and feasible electrostatic spinning method are high in yield and large in specific surface area; and on the other hand, the copper and cobalt double-metal nanoparticles have high catalytic activity and are catalytically degraded into 4-aminophenol withlow toxicity in a sodium borohydride aqueous solution. Therefore, the composite material has high catalytic efficiency and is simple and convenient to operate in the aspect of degrading water pollutants, the finally obtained product is also an important medical intermediate, and the commercial value that waste is turned into wealth and two birds are killed with one stone is achieved.

The invention provides a preparation method for sensitization-enhanced green light-emitting high-silica glass. The preparation method comprises the following steps: melting borosilicate glass, controlling heat treatment conditions, restricting the degree of phase-splitting and carrying out acid leaching so as to obtain porous glass which contains a part of residual Na <+> ions; dipping the porous glass in a solution containing Tb and Eu ions for immersion and doping; and sintering the porous glass at a high temperature in a reducing atmosphere so as to obtain the compact sensitization-enhanced green light-emitting high-silica glass. According to the invention, since a glass structure has Na <+>, energy transfer between ion is achieved and the excitation band of Tb<3+> ions is transferred and becomes about 320 nm instead of about 245 nm, thereby not only effectively increasing the excitation bandwidth of Tb<3+> but also greatly improving luminous intensity. The sensitization-enhanced green light-emitting high-silica glass prepared in the invention is expected to be used as a novel luminescence and laser material in a variety of fields like scientific research, national defense and health care.

The invention belongs to the technical field of catalysts, and particularly relates to a porous material and a preparation method and application thereof. The preparation method of the porous materialprovided by the invention comprises the following steps: mixing and stirring silicon-containing slurry and an aluminum-containing compound to obtain silicon-aluminum slurry; adding a template agent and an alkali metal and / or alkaline earth metal compound into the silicon-aluminum slurry, carrying out stirring and aging to obtain aged slurry; and carrying out centrifugal separation on the aged slurry to obtain a solid crude product, and drying and roasting the solid crude product to obtain the porous material. According to the preparation method of the porous material provided by the invention, the pore diameter, specific surface area and pore volume of the material can be greatly improved, and the catalytic activity and stability of the material can also be improved.

The invention belongs to the field of photocatalytic films, and specifically relates to an embedded TiO 2 Hollow sphere / GaN / Ga 2 O 3 Heterojunction photocatalytic film and preparation method thereof, including ITO transparent conductive glass, β-Ga located on ITO transparent conductive glass 2 O 3 thin film on β‑Ga 2 O 3 GaN film on film, β‑Ga 2 O 3 β‑Ga between thin film and GaN thin film 2 O 3 / GaN heterojunction film, embedded in β‑Ga 2 O 3 / TiO between GaN heterojunction films 2 hollow ball. The photocatalytic film of the present invention has a three-dimensional spatial multi-phase heterojunction interface structure, including TiO 2 / Ga 2 O 3 ,TiO 2 / GaN、GaN / Ga 2 O 3 and TiO 2 / GaN / Ga 2 O 3 The heterojunction interface has a synergistic effect with each other, can efficiently separate photogenerated carriers, and greatly improves the photocatalytic performance of the material; the photocatalytic efficiency of degrading rhodamine B is high, and the photocatalytic efficiency remains constant after multiple cycles. The present invention Embedded TiO 2 Hollow sphere / GaN / Ga 2 O 3 Heterojunction photocatalytic films have stable performance and have great application prospects in the field of photocatalytic degradation of organic pollutants.

The invention discloses a preparation method and application of a magnetic nanocomposite catalyst with a core-shell structure, comprising the following steps: S1, comprising Fe 2+ Metal salt X and containing Co 2+ Dissolve the metal salt Y in deionized water, stir evenly, to the mixed solution A; S2, remove the dissolved oxygen in the mixed solution A by ultrasonic vibration or suction filtration, and obtain the mixed solution B; S3, add the NaOH solution dropwise to the mixed solution In liquid B, mixed liquid C is obtained; in S4, the mixed liquid C is refluxed, heated and stirred, and the product is taken out after standing still, and washed multiple times with deionized water and absolute ethanol, then dried and ground to obtain powdered magnetic cobalt Iron hydroxide; S5, the powdered magnetic cobalt-iron hydroxide is calcined, ground and sieved to obtain the 3 o 4 For the shell, CoFe 2 o 4 A magnetic nanocomposite catalyst with a core-shell structure as the core. The preparation process is simple and easy to operate, and it can realize the microscopic control of the composite catalyst morphology, form a core-shell structure, and help the electron transfer in the catalytic reaction process.

The invention relates to a bimetallic PtSn / C catalyst for a high-activity fuel cell and its preparation and application. The preparation method specifically includes the following steps: (a) Pt(acac) 2 and CTAB were added to oleylamine and stirred ultrasonically, then W(CO) was added 6 and SnCl 2 2H 2 O is formed in the reaction system for heating reaction to obtain bimetallic PtSn materials; (b) after the reaction system is cooled to room temperature, the bimetallic PtSn obtained in step (a) is washed and loaded on activated carbon, and then post-treated to obtain bimetallic PtSn / C Catalyst. Compared with the prior art, the catalyst prepared by the invention has high catalytic activity and good stability, can be used as an anode catalyst of a direct methanol fuel cell, and has a simple preparation process.

The invention relates to the technical field of deacidification protection of large books, particularly to a deacidification protection technology for paper cultural relics, files and books. The equipment comprises a liquid storage tank, a deacidification treatment tank, a conveying device, a book clamping device, a driving motor, an automatic feeding machine, a gas sucking pump, a condensation recoverer, a height detector and a sensor which are connected through pipelines. According to the invention, a deacidification liquid can be transferred between the liquid storage tank and the deacidification treatment tank through a gas pipeline arranged between the deacidification treatment tank and the liquid storage tank and communicated with the liquid storage tank, so that the potential safetyhazard caused by over-high or over-low air pressure of a certain tank body due to the fact that deacidification liquid is conveyed only through a pump is avoided; by optimizing the layout of the liquid pipeline and reasonably adding the valve and the pump body on the pipeline, the use stability of the equipment is improved, and the maintenance is convenient; and the paper and book deacidificationmethod provided by the invention is high in stability, good in safety, high in automation degree and high in treatment efficiency, and is particularly suitable for large-batch and long-period book deacidification treatment.

The invention provides a modified diaphragm and a lithium-sulfur battery of a carborane-based covalent organic framework material. The modified diaphragm used in the lithium-sulfur battery is selected from a polymer diaphragm as the main body, and a modified layer is coated on one side of the polymer diaphragm. The modified layer is a new type of carborane COFs material. The carborane COFs material modification layer contains a carborane structure. Due to the special and highly electron-deficient structure of carborane, boron at the polar site in the structure forms a strong bond with polysulfide, and carborane The structure provides extremely abundant polar sites for the adsorption of polysulfides (LiPSs), combined with the inherent excellent physical and chemical properties of COFs, significantly inhibits the generation of the shuttle effect, thereby improving the charge-discharge specific capacity of lithium-sulfur batteries and cycle stability, which result in fast reaction kinetics and excellent electrochemical stability.