17results about How to "Efficient activation" patented technology

According to the nickel-based catalyst and the preparation method and application thereof, through Ga modification, the methane cracking depth can be reduced, and then carbon deposition is effectively inhibited; ceO2 oxygen vacancies can effectively activate CO2, the generated intermediate oxygen species O further reacts with deposited carbon so as to achieve the purpose of carbon cleaning, the GaxNi / CeO2 catalyst is prepared by adopting a urea homogeneous precipitation method, 1000-hour long-term stable catalytic conversion of the nickel-based catalyst in a carbon dioxide methane dry reforming reaction is achieved, and the catalyst has the advantages of simple process, low cost and high efficiency. The nickel-based catalyst prepared by the method can keep good catalytic stability.

This invention discloses a carbon-based composite catalytic material, its preparation method, and its applications. The invention employs a one-step carbonization process involving molten salt confinement, a non-urea nitrogen source, and no ball milling: a dinuclear iron precursor, nitrogen-containing organic matter (as both a non-urea nitrogen source and a carbon source), ZnCl2, and a molten salt system are mixed. After high-temperature pyrolysis under an inert atmosphere, the mixture is sequentially washed with hot water to dissolve the molten salt, followed by washing with HCl solution and drying. The entire process eliminates the need for complex mechanical treatments such as ball milling, simplifying the steps and providing milder conditions, making it more suitable for scale-up preparation and engineering applications. The above-mentioned carbon-based composite catalytic material is applied to the degradation of chlorinated organic pollutants in soil, particularly in conjunction with persulfate oxidants to construct an advanced oxidation system. The highly coordinated dinuclear M2N6 reaction center efficiently activates persulfate, generating sulfate radicals, hydroxyl radicals, and / or non-radical active species, achieving rapid degradation of recalcitrant chlorinated organic pollutants.

This invention provides a method for the artificial breeding of bullfrogs, including bullfrog selection, pairing, breeding, artificial spawning induction, artificial insemination, fertilized egg hatching, and tadpole rearing. This invention uses precise control of water temperature and quality in the breeding water to stimulate the gonadal development of the bullfrogs. It utilizes artificial spawning induction, insemination, fertilized egg hatching, and seedling rearing techniques to solve the problems of existing bullfrog germplasm degradation and difficulties in artificial breeding. By adding *Lactobacillus rhamnosus* to the feed, the mortality rate of bullfrogs is effectively reduced, the hatching rate of fertilized eggs is high, and the seedling growth rate is fast. This allows for a stable and continuous supply of high-quality bullfrog stock, meeting the effective demand for bullfrog seedlings throughout the year, and providing a technical foundation for the artificial breeding of bullfrogs.

This invention discloses a method for preparing and applying chitosan-encapsulated CoCe layered double hydroxide CoCe-LDH. This material can achieve rapid and efficient degradation of roxarsone and removal of the resulting inorganic arsenic. In this material, LDH is encapsulated by chitosan, resulting in a sheet-like material. Chitosan can disperse active sites and adsorb and enrich PMS, while LDH can transfer PMS ions into the anion layer through anion exchange, thereby increasing the active sites. After coupling with the material, PMS is specifically converted to... 1 O2 accelerates the degradation rate.

The application relates to the technical field of water pollution treatment, in particular to a preparation method and application of porous structure CuFe2O4. The preparation method of the porous structure CuFe2O4 comprises the following steps: stirring and mixing copper salt, iron salt and a pore-forming agent, grinding into a gelatinous product, calcining the gelatinous product for 1.5-3 hours, naturally cooling to below 100 DEG C and taking out, and finally fully grinding and sieving to obtain the porous structure CuFe2O4; wherein the molar ratio of the copper salt to the iron salt is 1:2-2.1; and the molar ratio of the copper salt to the pore-forming agent is 1:1.5-1.55. The preparation method of the porous structure CuFe2O4 and the application of the porous structure CuFe2O4 in activated sulfite degradation of organic pollutants have the advantages of high efficiency, environmental protection, economy and the like, and have important significance for the field of water treatment.

The invention discloses a multi-field control pyrolysis reactor which comprises a lifting pipe at least provided with a preheating section and a rapid pyrolysis section, a reaction channel is formed in the lifting pipe, a carrier gas inlet is formed in the lower end of the preheating section, a material inlet is formed in the preheating section, and a material outlet is formed in the rapid pyrolysis section; the carrier gas inlet and the material inlet are respectively communicated with the reaction channel; the guide pipe penetrates through the lifting pipe and is positioned in the reaction channel, and a plurality of guide pipe gas outlets with different gas outlet directions are formed in the guide pipe. The multi-field control pyrolysis reactor provided by the invention can realize regulation and control of a temperature field, a velocity field and a reaction atmosphere in a reaction process, optimizes a pyrolysis process, and improves product yield and quality.

The invention relates to a polyoxometallate cluster, a preparation method and application of the polyoxometallate cluster in a CO2 hydro-conversion process, and belongs to the field of catalytic materials. The invention provides an Anderson type PtMo6O24 cluster which is positioned in a stable metal organic framework, has a clear molecular structure and has a catalytic effect on low-temperature CO2 hydrogenation. After the performance of the cluster is operated for a long time, the activity or methanol selectivity of the cluster does not show an attenuation sign, and the one-way yield of the cluster also exceeds that of the most advanced heterogeneous catalyst. In combination with in-situ spectrum and DFT (Discrete Fourier Transform) calculation, the formation of CH3OH is mainly dominated by reverse water-gas shift and a subsequent CO hydrogenation path, and an HCOO path possibly serves as an auxiliary path. The cluster structure with a clear structure is used for CO2 hydrogenation, and has the characteristics of high activity and low-temperature catalysis.

This invention relates to a method for controlling surface defects and phase states of indium oxide (IoA) using cold plasma. The production method primarily involves placing the IoA precursor, indium hydroxide, in a dielectric barrier discharge plasma reactor. Subsequently, a gas is introduced, and a high-voltage electric discharge is applied to break down the gas, generating plasma. The high-energy electrons in the plasma cause the indium hydroxide to decompose, forming IoA of different phase states, while simultaneously allowing oxygen atoms in the IoA lattice to escape, thus creating oxygen defects on the IoA surface. This method is simple to operate, operates under mild conditions, is quick, consumes little energy, and is environmentally friendly, showing promising application prospects in the field of materials science.

The invention discloses a molten metal methane cracking hydrogen production method based on refractory particulate matter reinforcement, and belongs to the technical field of methane cracking hydrogen production. The molten metal methane cracking hydrogen production method provided by the invention comprises the following steps: adding refractory particles into a molten metal phase and uniformly dispersing to form a solid-liquid mixed reaction system; the refractory particles are selected from at least one of carbon black, activated carbon and tungsten particles; and introducing methane into the solid-liquid mixed reaction system, and carrying out cracking reaction to generate hydrogen and a solid carbon product. According to the method, the refractory particles selected from carbon black, activated carbon and tungsten particles are uniformly dispersed and added into the molten metal phase, so that the conversion per pass of methane and the selectivity of hydrogen are greatly improved, meanwhile, the morphology of the generated solid carbon product is regulated and controlled, and a carbon material which is more ordered in structure and higher in additional value can be obtained.

This invention relates to an activation method for a proton exchange membrane fuel cell stack based on an AC impedance meter. The steps include: checking the airtightness of the stack; heating the stack and purging the anode and cathode with nitrogen gas; introducing hydrogen gas into the anode and nitrogen gas into the cathode, with the anode pressure greater than the cathode pressure; switching the nitrogen gas at the cathode to air; performing oxygen-deficient activation; performing constant current discharge activation and recording polarization curve 1; repeating oxygen-deficient activation and constant current discharge activation to obtain multiple polarization curves; determining whether the impedance deviation of a single cell between the new polarization curve and the previous polarization curve is less than 0.2 mΩ; if so, further determining whether the voltage deviation between the new polarization curve and the previous polarization curve is less than 10 mV, thus completing the stack activation. This invention rapidly reduces oxides on the catalyst surface, improving catalyst activity and utilization, fully wetting the proton exchange membrane, establishing good ion channels, accelerating stack activation, and reducing hydrogen consumption.

The present invention relates to a method for activating a lithium secondary battery comprising a positive electrode, a negative electrode, and an electrolyte, in which the lithium secondary battery comprises a positive electrode active material made of a lithium metal oxide containing manganese in an amount of 50 mol% or more but less than 100 mol% based on the total metal content excluding lithium, the method includes activating the lithium secondary battery by a CC-CV charging method in which constant current (CC) charging is performed until a specified state of charge (% SOC) is reached, and then constant voltage (CV) charging is performed, in which the CC-CV charging of the activation step ends at a point in time at which an activation charging depth defined by the following mathematical formula 1 becomes 5.17% to 15.00%, [Mathematical formula 1] Depth of charge for activation (%) = (charge capacity for CV charge interval / total charge capacity for activation step) * 100.

This invention discloses a method for activating persulfate to degrade organic pollutants using an iron / smarium co-modified porous nitrogen-doped carbon Fenton catalyst. The method uses the iron / smarium co-modified porous nitrogen-doped carbon Fenton catalyst as an activator to activate persulfate and degrade organic pollutants. The iron / smarium co-modified porous nitrogen-doped carbon Fenton catalyst comprises a porous nitrogen-doped carbon framework, with iron and samarium elements modified internally and on its surface. Iron and samarium elements coexist in the form of single-atom sites, diatomic sites, atomic clusters, and nanoparticles. The iron / smarium co-modified porous nitrogen-doped carbon Fenton catalyst used in this invention has the characteristics of high reactivity, wide applicability, and strong anti-interference ability. It is a catalyst with excellent Fenton-like catalytic performance and can be widely used to treat organic pollutants in water bodies. It can quickly and thoroughly remove organic pollutants, has high application value, and good application prospects.

The invention discloses a semiconductor device and a preparation method thereof, a power module, a power conversion circuit and a vehicle, and the preparation method comprises the steps: providing a semiconductor body which comprises a first surface and a second surface which are oppositely arranged, the semiconductor body further comprises a well region and a first region, and the first region is of a first conduction type and is located on the first surface; the well region is of a second conduction type and is located on one side of the first region away from the first surface; the first surface is also provided with a gate trench; forming an annealing protection layer on the first surface and the bottom and the side wall of the gate trench; carrying out first-stage annealing treatment on the semiconductor body at a first temperature so as to repair the etching damage of the semiconductor body; carrying out second-stage annealing treatment on the semiconductor body at a second temperature so as to activate doped impurities in the semiconductor body; and removing the annealing protection layer. The preparation process of the semiconductor device is effectively simplified.

The application discloses a target material binding combination promoting method and belongs to the technical field of target materials. The target material binding combination promoting method comprises the following steps: (1) taking a stainless steel pipe as an inner lining pipe, cleaning the inner lining pipe, and performing sand blasting treatment on the stainless steel pipe to form a sand blasting layer; (2) spraying alloy wires onto the sand blasting layer by adopting an electric arc spraying method to form an alloy layer; (3) performing plasma treatment on the stainless steel pipe; and (4) heating the stainless steel pipe, coating solder on the alloy layer to form a solder layer, and performing ultrasonic treatment. The sand blasting layer, the alloy layer and the solder layer are formed on the stainless steel pipe, and the plasma treatment and the ultrasonic treatment are performed on the stainless steel pipe, so that the binding between the inner lining pipe and the target material base body is effectively improved, and the binding combination rate of the target material is effectively improved.

The application relates to a preparation method and application of a pH-driven aggregation death receptor 5 combined enzyme cascade DNA nanospring, which can effectively solve the problem that the prior art cannot respond to pH aggregation DR5 while promoting DR5 expression, and the technical solution is that the DNA nanospring comprises DR5TP, glucose oxidase and horseradish peroxidase; different DNA chains are annealed, hybridized and connected by T4 DNA ligase to synthesize the DNA nanospring coding i-motif, the DR5TP, GOX and HRP are modified through biotin-streptavidin mutual bonding to obtain the pH response aggregation death receptor 5 combined enzyme cascade DNA nanospring; the application is based on a pH response nucleic acid self-delivery strategy, tumor cell apoptosis signal activation is induced by regulating ligand spacing, contraction is realized by responding to a tumor micro-acid environment, effective activation of the DR5 receptor is realized, and the enzyme cascade reaction is ingeniously combined to promote cell apoptosis, which is an innovation on DNA nanomaterials.

The present application relates to nitrogen-doped biochar supported copper sulfide composite material and its preparation method and application, and belongs to the technical field of water pollution control. The nitrogen-doped biochar supported copper sulfide composite material can be used to activate persulfate to degrade organic pollutants in water, can significantly improve the catalytic degradation performance of biochar material, optimize the non-radical pathway of generating singlet oxygen and the radical pathway of generating sulfate radicals, hydroxyl radicals and superoxide radicals by activating peroxymonosulfate, and ultimately achieve the purpose of efficient synergistic degradation of organic pollutants. The composite material can realize the resource utilization of wheat straw and the efficient removal of dyes in water, achieving the purpose of waste treatment. The catalytic material is simple to prepare, the raw materials are cheap, and industrialization is easy to realize. The organic matter removal efficiency is high, storage and addition are convenient, the pH range of wastewater is wide, and the catalytic material has great potential and wide application prospect in the field of dye wastewater treatment.