29 results about "Nanoreactor" patented technology

The application discloses a kind of multistage nano-reactor array base nano-channel and preparation method thereof;The application first prepares periodic mesoporous organosilicon Au-PMO loaded with gold nanoparticles, then adopts multi-element assembly strategy, constructs nano-reactor array layer on the surface of porous anodic aluminum oxide AAO by spin coating method, and finally obtains Au-PMO / AAO hetero thin film with rich mesoporous structure and adjustable thickness.The gold nanoparticles loaded thereon are uniform in size and uniformly distributed, so that the thin film exhibits peroxidase-like activity.In addition, PMO / AAO thin film with different metal nanoparticles loaded can also be constructed using this method, paving the way for subsequent sensing, gating and catalytic applications.

The invention belongs to the technical field of photoelectrocatalysis, and particularly relates to a preparation method of a double-confinement hollow photocathode and application of the double-confinement hollow photocathode in synthesis of ammonia from nitrate wastewater through photoelectric reduction. According to the method, based on an ion exchange and in-situ growth strategy, a FeMnO3 / CuFe2O4 / Ti hollow cube integrated photocathode is constructed, hydroxyl functionalized ionic liquid (OH-ILs) is further introduced through vacuum impregnation, and an ILs (at) FeMnO3 / CuFe2O4 / Ti nanoreactor with a dual confinement effect is formed. Under ultraviolet-visible-near infrared (UV-Vis-NIR) illumination, the photocathode can remarkably promote separation of photo-induced electron-hole pairs, the charge transfer efficiency is improved, and high-selectivity and high-efficiency ammonia synthesis is achieved. Experiments show that the photocathode can almost completely convert nitrate in high-concentration nitrate wastewater (50mM) within 2.5 hours, so that the effluent reaches the drinking water standard of the World Health Organization (WHO). In a flowing electrolytic tank, the ammonia yield reaches 20.51 mg h <-1 > cm <-2 >, the Faraday efficiency reaches up to 97.75%, and excellent catalytic performance is shown.

The utility model relates to the field of gas-liquid mixing, in particular to a gas-liquid nano-reactor, which solves the problem of low reaction efficiency of substances with slower gas-liquid reaction, utilizes a mixing cavity to generate a cavitation effect so as to enable gas and liquid to reach nanoscale, increases the gas-liquid contact area and increases the reaction efficiency, and mainly comprises a columnar reactor body, the reactor body is provided with a plurality of mixing cavities which are sequentially communicated along the axis direction; the mixing cavity is sequentially divided into a converging section and a diffusing section in the flow direction of fluid, the converging section is a first conical cavity with the inner diameter gradually reduced in the flow direction of the fluid, and a plurality of vortex-shaped flow guide grooves converging towards the center are formed in the inner wall of the converging section; the diffusion section is a second conical cavity with the inner diameter gradually enlarged in the flow direction of the fluid, and the second conical cavity is communicated with the first conical cavity.

A system and method for characterizing a target analyte is provided. The system comprises a nanopore and a polymer chain, the polymer chain comprising a tethering site and a reaction segment, wherein the polymer chain is tethered through the tethering site such that the polymer chain cannot pass through the nanopore, and wherein the reaction segment comprises at least one sensing module that can interact with a single molecule of the target analyte.

The invention discloses a water-based super-hydrophobic finishing agent based on microemulsion in-situ synthesis as well as a preparation method and application of the water-based super-hydrophobic finishing agent. According to the method, octadecyl trichlorosilane, a surfactant and a cosurfactant firstly form an oil-phase mixture, then water is added to form an oil-in-water type microemulsion, finally standing and aging are performed, silane is subjected to in-situ hydrolysis in a microemulsion nanoreactor, and the water-based super-hydrophobic finishing agent is prepared through a one-step method. An organic solvent reaction medium is completely abandoned, and the process is simple and environment-friendly. The obtained finishing agent is uniform in particle and good in stability, can endow the polyester fiber fabric with a super-hydrophobic surface with a contact angle greater than 158 degrees and a rolling angle less than 4 degrees after being used for treating the polyester fiber fabric, is excellent in wear resistance and durability, and has a wide industrial application prospect.

The application provides a kind of liposome nano-reactor loaded separation microneedle and its preparation method and application, belong to the field of biological medicine.The application uses phospholipid, cholesterol, tetramethoxysilane and 3-aminopropyl triethoxysilane as raw material, encapsulates cisplatin, 5-aminoacetylpropionic acid and catalase, and prepares liposome nano-reactor;With polyvinylpyrrolidone, citric acid, sodium bicarbonate and regenerated silk fibroin as raw material, the liposome nano-reactor is dispersed in microneedle body by pouring method, and a kind of microneedle that can be quickly separated is successfully prepared.The experimental research of the application proves that the separation microneedle has good biocompatibility and mechanical property, can effectively break through the stratum corneum, realize the efficient transdermal delivery of liposome nano-reactor.The liposome nano-reactor can be locally planted in deep tissue of tumor, continuously supply oxygen through enzymatic reaction, effectively improve the oxygen supply shortage of tumor photodynamic therapy, and has obvious advantages and broad prospects in the application of skin tumor photodynamic therapy.

A hybrid catalytic nanoreactor having selectivity and stability in presence of air is provided for reduction reactions including semi-hydrogenations comprising of light harvesting dendritic plasmonic colloidosomes (DPC) of gold preferably as black gold and co-acting synergistically active catalytic sites of Pt-doped Ru bimetallic nanoparticles for desired significantly special selectivity and air-stability as a plasmonic reduction catalyst favoring plasmon-mediated simultaneous reduction and oxidation of metal active sites for facilitating reduction reactions including semi-hydrogenation activity. Said black gold / RuPt catalyst showcases good efficiency in acetylene semi-hydrogenation, attaining over 90% selectivity with ethene production rate of 320 mmol g−1 h−1 with its stability evident from 100 h of operation with continuous air flow, attributed to the synergy of co-existing metal oxide and metal phases. The catalyst's stability is further enhanced by plasmon-mediated concurrent reduction and oxidation of the active sites, facilitating its end use and applications in chemical industries, petrochemical industries, and applications catalysis.

The invention discloses a cavity confinement carbon-based iron monatomic catalytic material as well as a preparation method and application thereof. According to the material, a soft and hard template cooperation strategy is adopted, a hollow mesoporous carbon sphere is used as a carrier to anchor atomic-scale dispersion iron sites, and a nanoreactor with a cavity confinement structure is constructed. Compared with a traditional material, the activation efficiency of the material on peroxymonosulfate (PMS) is improved by about 2.9 times, the degradation performance on phenolic pollutants is remarkably enhanced, and the strengthening effect of a confinement structure on mass transfer and reaction kinetics is verified. Through metal-carrier cooperative regulation and control, singlet oxygen (O) is preferentially generated through the reaction, selective oxidation of organic pollutants is achieved through a non-free-radical path, and the anti-interference capacity in complex water is improved. The method is simple in process and relatively low in cost, and the obtained solid catalyst is easy to separate and recover, is suitable for efficient deep treatment of refractory organic pollutants in rural domestic sewage and industrial wastewater, and has a good application prospect.

A method of forming a nanoparticle can include admixing an aqueous solution into an oil-phase to thereby form an emulsion of droplets of the aqueous solution in the oil phase, the aqueous solution comprising a nanostructure precursor and a polymer, adding a silane precursor and catalyst to form a silica shell around each of the droplets to nanoreactors; annealing at a first temperature below the decomposition temperature of the polymer to aggregate the nanostructure precursor within the nanoreactor; and annealing at a second temperature above the decomposition temperature of the polymer to convert the aggregated nanostructure precursor to the nanostructure and decompose the polymer.

A method of forming a halide perovskite nanocrystal array having a plurality of halide perovskite nanocrystals arranged in a pattern can include coating an array of pens with a first ink comprising at least one first perovskite precursor having the formula AX and at least one second perovskite precursor having the formula BX′2 dissolved in a solvent. A is a cation, B is a metal, and X and X′ are each a halogen. The method further includes contacting a substrate with the coated pen array to thereby deposit the first ink indias a pattern of printed indicia on the substrate. The printed indicia form nanoreactors on the substrate and a halide perovskite nanocrystal nucleates and grows within each nanoreactor to form the halide perovskite nanocrystal array.

The invention provides a phosphate positive electrode material, a preparation method thereof, a positive electrode plate and a lithium ion battery. The preparation method comprises the following steps: sequentially performing first drying and first sintering on first slurry containing a first lithium source, an iron source, a manganese source, a phosphorus source and a first carbon source to obtain a first precursor; second slurry containing a second lithium source, a second carbon source and the first precursor is sequentially subjected to second drying and second sintering, and a second precursor is obtained; dispersing the second precursor in an organic solvent to obtain a third precursor; and performing third drying and third sintering on third slurry containing a third lithium source, the microemulsion and a third precursor in sequence to obtain the phosphate positive electrode material. According to the method, the technical effect of remarkably improving the electrochemical performance and the energy density of the lithium manganese iron phosphate material is achieved by regulating and controlling the adding time of the lithium source and using the microemulsion dispersion system as the nano reactor.

The invention belongs to the technical field of nano material preparation, discloses a zero-dimensional perovskite nanocrystalline large-scale preparation method based on a room-temperature self-assembly strategy, and aims to solve the technical problems that in the prior art, the uniformity of a product is poor, high luminous efficiency and conductivity are difficult to achieve at the same time, and the wavelength cannot be accurately regulated and controlled. According to the method, a water-in-oil microemulsion system is adopted as a nanoreactor, and the high uniformity of nanocrystal growth is fundamentally guaranteed through a confinement reaction. The composition creatively comprises two ligands: one ligand is a pi-conjugated conductive main functional ligand with surface passivation and charge transfer functions, which solves the problem of poor conductivity caused by the traditional insulating ligand while ensuring high photoluminescence efficiency, and the other ligand is a competitive tuning ligand which forms dynamic competitive balance with the main ligand. The key problems of product uniformity, conductivity, wavelength controllability and the like are synergistically solved, and the prepared nanocrystal has high optical purity, high quantum yield and excellent conductivity.

The application belongs to the technical field of homogeneous catalysis, and discloses application of a ten-core 3d-4f supramolecular nanocage material in catalyzing a three-component Strecker reaction. The ten-core 3d-4f supramolecular nanocage material is used as a nanoreactor to realize synthesis of a biologically active drug precursor through the three-component Strecker reaction. The method has simple operation steps and can realize industrialized preparation. The prepared ten-core 3d-4f supramolecular nanocage material has high catalytic activity, catalytic stability and catalytic efficiency in catalyzing the three-component Strecker reaction.

This invention discloses a mitochondrial micro / nanoreactor system, its preparation method, and its applications. The system comprises mitochondrial-trained apoptotic bodies and a piezoelectric short-fiber scaffold, which are covalently linked via a copper-free click chemical linker. The mitochondrial-trained apoptotic bodies are obtained by inducing apoptosis in macrophages overexpressing Miro1 protein and pretreated with hypoxia, and are rich in functional mitochondria. The piezoelectric short-fiber scaffold is obtained by electrospinning a composite of poly-L-lactic acid and collagen, and can convert external mechanical energy into electrical signals. This invention, through synergistic action, on the one hand, utilizes apoptotic bodies to target and deliver functional mitochondria, enhancing intercellular mitochondrial transfer; on the other hand, it utilizes the piezoelectric effect to generate endogenous electrical stimulation, activating the mitochondrial autophagy pathway, thereby bidirectionally regulating mitochondrial energy metabolism homeostasis in diabetic wounds and significantly promoting wound healing.

The invention provides an air purification material with a photocatalysis function and a preparation method thereof. The preparation method comprises the following steps: S1, preparing Ti (OH) 4 precipitate; s2, preparing a P-TiO2 sol; s3, a copper ion solution with the concentration being 0.02 mol / L and the volume being 8 mL is added into the P-TiO2 sol, meanwhile, 0.25-0.29 g of talcum powder and 0.32-0.35 g of silicon dioxide modified aluminum oxide are added, and catalyst sol is obtained; s4, pretreating kraft paper, and soaking the kraft paper in the catalyst sol obtained in S3 to obtain the air purification material. A layered structure of talcum powder provides two-dimensional plane support, a mesoporous network of silicon dioxide modified aluminum oxide forms a three-dimensional space, and the hierarchical structure limits copper ions in a nanoscale microenvironment to avoid agglomeration and inactivation; the silicon dioxide shell layer wraps the aluminum oxide nanoparticles to form a nano reactor, so that the copper ions are uniformly distributed in the sub-nanometer scale, and the copper ions are further prevented from being agglomerated and inactivated; the formaldehyde degradation efficiency of the copper ions is improved.

The invention discloses an NIR-IIb response type up-conversion nanometer material, a hydrogen production nanometer reactor prepared from the NIR-IIb response type up-conversion nanometer material and application of the NIR-IIb response type up-conversion nanometer material, and belongs to the technical field of nanometer biomedical materials. The controllable hydrogen production nanoreactor is obtained by using a bionic carrier formed by lipidosome, a photosensitizer, a catalyst and a proton donor which are jointly wrapped in the bionic carrier, and an up-conversion nanomaterial prepared by a chemical synthesis method, a hydrothermal method and the like, and can generate hydrogen under the stimulation of light with specific wavelength. According to the nano-reactor provided by the invention, a proton donor is efficiently catalyzed to generate hydrogen, on-demand and controllable release of hydrogen at a focus part is realized by utilizing high-tissue-penetrability NIR-IIb stimulation, and the nano-reactor provided by the invention can effectively remove active oxygen at the focus part and relieve oxidative stress by controllably releasing the generated hydrogen, so that pulmonary fibrosis is effectively relieved. The nanoreactor provided by the invention has the advantages of good biocompatibility, high hydrogen production efficiency, strong targeting property, small treatment side effect and the like, and has a wide market application prospect.

The invention relates to the technical field of biomedical materials, in particular to a nanoreactor and a preparation method and application thereof. The nano reactor comprises an intermediate compound modified by glucan, and the intermediate compound comprises nano particles loaded with L-arginine; the nano particles are formed by copper ions and baicalein through coordination. According to the nano reactor provided by the invention, the inflammatory lung tissue is selectively targeted through the identification of Dectin-1 on the glucan mediated macrophage. Once the nanoreactor is in contact with the inflammatory microenvironment, the nanoreactor triggers a cascade catalytic process. The cascade reaction amplifies oxidation and nitrous acid stress in infected tissues, and effectively destroys bacterial membranes and biological membranes, thereby realizing effective eradication of klebsiella pneumoniae and pseudomonas aeruginosa.

The application discloses a copper-cobalt bimetallic nanoreactor for generating active nitrogen and a preparation method and application thereof, and relates to the technical field of nanomaterial synthesis. The application is characterized in that polyvinylpyrrolidone-coated CuO2 nanodots, hexadecyl trimethyl ammonium bromide, Co(NO3)2*6H2O and 2-methyl imidazole are reacted, and the active component CuO2 for self-supplying hydrogen peroxide is encapsulated in a metal-organic framework material ZIF-67 to obtain CuO2@ZIF-67; then the CuO2@ZIF-67 is mixed with an L-arginine solution to perform functional modification, and a Co(OH)2 dissociation layer is formed on the surface of the ZIF-67, so that the L-arginine is anchored on the surface of the ZIF-67, and finally, a copper-cobalt bimetallic nanoreactor for generating active nitrogen is prepared. The copper-cobalt bimetallic nanoreactor has the characteristics of self-supplying hydrogen peroxide, peroxidase and releasing nitric oxide, and can effectively realize efficient and controllable generation of active nitrogen species, i.e., peroxynitrite.

The invention provides a nanoreactor with an oxidation-immunization-blood vessel triple synergistic effect and a preparation method and application thereof.The nanoreactor is prepared by mixing a BSA solution, a heme solution and deionized water to obtain a nano-enzyme solution, then dropping a bFGF solution into the nano-enzyme solution through an injection pump, and conducting self-assembly of an NZs at bFGF dispersoid. And under an anaerobic condition, injecting a MnCl2 solution into the NZs (at) bFGF dispersion, immediately adding a Na2S solution, mixing, and removing redundant ions and by-products by using a dialysis bag to obtain the required nanoreactor (NZs (at) bFGF (at) MnS). Through an in-situ injection mode, the micro-environment of the diabetic wound surface is adjusted, immunoregulation and angiogenesis are promoted, and the purpose of promoting the repair of the diabetic wound surface is achieved.

This invention discloses a method for preparing a hollow molybdenum disulfide nanoreactor and its application in the conversion of aromatic phenols and ethers. The hollow molybdenum disulfide nanoreactor is denoted as M / MoS2, where M is one of the transition metals Co, Ni, Fe, and Cu, the mass ratio of M / (M+MoS2) is 10wt.%–50wt.%, and MoS2 represents hollow MoS2 nanospheres with a cavity diameter ranging from 70–380 nm. Compared to traditional bulk or nanosheet MoS2 materials, the metal-MoS2 interface strengthening effect caused by the special hollow nanosphere structure enables highly efficient catalysis of the hydrogenation and deoxygenation of aromatic phenols and ethers into aromatic hydrocarbons at 200–250 °C, hydrogen pressure 3–6 MPa, reaction time 3–6 h, and a nanoreactor / substrate mass ratio of 1:5–1:1, achieving a conversion rate >90% and an aromatic hydrocarbon yield >80%.

The invention discloses a biological detection method based on microfluid. The method comprises the following steps: forming a reaction plate with an inverted trapezoidal pit array on an etching substrate, and arranging a nano single crystal structure of which the top end is loaded with a nano reactant in a pit; patterning a biocompatible material on the surface of the reaction plate to construct a microflow reaction system of 10 microliters to 100 microliters; introducing the biological extract through a microfluid system, and combining the biological extract with the nano reactant to form an analyte; carrying out electromagnetic radiation and imaging on the analyte; high-sensitivity and high-flux biological detection is realized by comparing signal or image differences before and after combination of biological extracts and analyzing data. According to the method, a microfluidic technology and nano optical detection are combined, so that the detection integration level and accuracy are improved.

The invention provides a PfAgo-mediated liquid drop digital nucleic acid multiple detection system, a kit and a detection method thereof, and belongs to the technical field of biological detection. According to the invention, the programmable nucleic acid cleavage characteristic of PfAgo protein is combined with the synergistic effect of droplet microcell chamber to obtain a droplet digital nucleic acid multiple detection system, the detection system realizes specific recognition and cleavage of HPV DNA by means of the programmable characteristic of the PfAgo protein, and a reaction system containing enzyme, reagent and sample is dispersed into micro-droplets; enabling each liquid drop to become an independent nano reactor; the detection system improves the efficiency by improving the concentration of reaction components, and improves the sensitivity order of magnitude by means of a space confinement effect; the detection system can be developed into a kit, early diagnosis, genetic typing and epidemiological monitoring of pathogens such as HPV are achieved, large-scale popularization is facilitated, and good practicability is achieved.

The application provides a core-shell structure hydrophobic molecular sieve adsorbent and a preparation method and application thereof. The adsorbent comprises, from inside to outside, a copper-doped ZSM-5 molecular sieve core, a layered double hydroxide shell layer, a polypyrrole layer in-situ polymerized in the pores and interlayers of the shell layer, and an outermost hydrophobic coating. The preparation method comprises the following steps: impregnation and calcination to obtain a copper-doped ZSM-5 molecular sieve core, in-situ growth and calcination of a LDHs shell layer on the surface of the core, in-situ polymerization of polypyrrole in the pores and interlayers of the LDHs shell layer under mild conditions, and finally grafting of a hydrophobic coating. The copper doping enhances the affinity for aromatic volatile organic compounds, the calcined LDHs shell layer is used as a nano-reactor to load polypyrrole, an electrically conductive network is provided and adsorption is assisted, electric heating desorption regeneration can be realized, the hydrophobic coating endows the material with macroscopic moisture resistance, high adsorption capacity is maintained in a high-humidity environment, and the material is suitable for efficient adsorption and cyclic treatment of volatile organic compounds.

The invention belongs to the technical field of catalytic materials, and particularly relates to a MnOx nano-cluster / C / SBA-15 ozone nano-reactor as well as preparation and application of the MnOx nano-cluster / C / SBA-15 ozone nano-reactor. The invention provides a preparation method of a MnOx nano-cluster / C / SBA-15 ozone nano-reactor, P123 which is not removed in a SBA-15 synthesis process is used as a carbon source, and preliminary cross-linking polymerization is realized under the catalysis of sulfuric acid. And further carbonizing the cross-linked and polymerized P123, so that a compact carbon film is attached to the pore wall of the SBA-15. And finally, loading the MnOx nano-cluster on the surface of the carbon film through ultrasonic-assisted impregnation. The ozone nanoreactor constructed by the invention can simultaneously realize ozone solubilization, organic pollutant enrichment and efficient catalysis, can better improve the utilization rate of ozone and catalyze the degradation of ozone on organic pollutants, and has an excellent catalytic degradation effect on organic pollutants.

The invention belongs to the technical field of biochemical engineering and enzyme engineering, and particularly relates to a graded porous spherical organic polymer immobilized enzyme nanoreactor and a preparation method thereof.The preparation method comprises the following steps that S1, paraphthaldehyde and m-phenylenediamine are weighed to serve as comonomers, and the comonomers and a structure-directing agent Pluronic F127 are jointly dissolved in methylbenzene to form an organic phase; s2, the organic phase is slowly added into a water phase composed of water and ethyl alcohol through stirring, and F127-methylbenzene-monomer composite micelles are formed; s3, adding acetic acid, and guiding the polymer to form spherical particles with a macroporous-mesoporous hierarchical structure by using the F127-toluene-monomer composite micelle as a soft template; s4, centrifuging, washing and drying to obtain a graded porous spherical polymer carrier; and S5, dispersing the graded porous spherical polymer carrier into a phosphate buffer solution of specific protease to obtain the graded porous spherical organic polymer immobilized enzyme nanoreactor.

The application belongs to the technical field of nanometer material preparation, and discloses a biomimetic yolk-shell structure CuO@Co3O4 nano reactor, a preparation method and application. Copper salt and cobalt salt are dissolved in a system containing an organic solvent, uniformly mixed, and then a metal organic precursor with a yolk-shell structure is obtained through a solvothermal reaction. Then, the precursor is calcined in an air atmosphere to obtain a biomimetic yolk-shell structure CuO@Co3O4 nano reactor with spatially separated active sites. The biomimetic yolk-shell structure CuO@Co3O4 nano reactor can be used as a catalyst in the electrochemical reduction of nitrate to synthesize ammonia.

The invention belongs to the field of biomedical and dental restoration materials, and particularly relates to a phosphorus-containing polymer loaded silver nanoparticle (PTM) / AgNPs composite material and application thereof in antibiosis, anti-caries and promotion of remineralization of tooth tissue, and a preparation method of the PTM / AgNPs comprises the following steps: dispersing the phosphorus-containing amphiphilic block copolymer PTM in water, and stirring to obtain a mixture; the preparation method comprises the following steps: adding an AgNO3 aqueous solution into a stabilizer and a carrier, and preparing the PTM-AgNPs compound through an in-situ reduction method. PTM is self-assembled in an aqueous solution to form micelles or vesicles, a nano reactor is provided for formation of AgNPs, aggregation of polymer chains is prevented, effective and stable AgNPs can be obtained, PTM and AgNPs are good in biological safety, an AgNPs antibacterial agent can be slowly released, phosphate radicals on PTM and AgNPs have an in-situ induction mineralization function, initial lesion is repaired, and the antibacterial effect is good. And the anti-caries ability of the tooth tissue is improved.

The invention discloses a Co3O4 and CoO-based heat storage material with high sintering resistance and uniform doping and a preparation method thereof.The preparation method comprises the steps that cobalt salt and alkaline earth metal salt are dissolved in a mixed solvent composed of water and alcohol, a carbon source and an organic ligand are added, stirring is conducted for dissolution, and uniform sol is formed; evaporating a solvent from the sol to form viscous gel, and drying to obtain a xerogel precursor; performing first heat treatment on the xerogel precursor in an inert atmosphere to obtain metal oxide / carbon composite powder; and performing secondary heat treatment on the metal oxide / carbon composite powder in an oxygen-containing atmosphere to obtain the heat storage material. According to the preparation method, a cobalt source, a doped metal source and a carbon precursor are uniformly mixed on a molecular level through a novel porous carbon matrix assisted-sol-gel composite process, and a three-dimensional porous carbon network formed in a subsequent carbonization process is used as a nano reactor and a spatial isolator; the obtained heat storage material has high specific surface area and excellent cycle performance.

The application discloses an S-Pt@MoS2 hollow nano reactor and a preparation method and application thereof, and belongs to the technical field of inorganic nano materials. In view of the deficiency of the existing Pt-based catalyst in two-electron oxygen reduction (ORR) catalysis, the S-Pt@MoS2 hollow nano reactor for limiting Pt nanoparticles in MoS2 cavities is prepared through a'micelle limited Pt ion' strategy, the S-Pt@MoS2 hollow nano reactor has strong Pt-S coordination, can adjust and control the oxygen adsorption mode, inhibits the O-O bond breaking, and improves the selectivity of two-electron ORR. In addition, the shell isolation effect caused by the cavity limitation can avoid the aggregation and dissolution of the Pt active sites, and improve the stability of the catalyst. The application develops a material synthesis technology based on the micelle limited strategy for precisely controlling the spatial position of the active sites, realizes the effective regulation of the ORR reaction path from four electrons to two electrons, and provides a new idea for preparing an acid electro-synthesis hydrogen peroxide efficient and durable catalyst.