33 results about "Reactive nitrogen" patented technology

The invention relates to the technical field of plasma equipment, in particular to a plasma reactor, a plasma activated water preparation device and a plasma activated water preparation method, and the plasma activated water preparation device comprises a dielectric barrier discharge unit and a pulse discharge unit. The pulse discharge unit is arranged above the dielectric barrier discharge unit, and a mixed fluid inlet is formed in the bottom of the dielectric barrier discharge unit. And the top of the pulse discharge area is provided with a mixed fluid outlet. One is that discharge of the dielectric barrier discharge unit and pulse discharge of the pulse discharge unit are utilized to respectively provide a large amount of active oxygen and active nitrogen, and two discharge units are integrated in one plasma reactor to realize mutual dissolution promotion of the active oxygen and the active nitrogen; secondly, the multiple stages of plasma reactors are connected in series, the stages are increased according to the water demand, the plasma dosage is ensured, and plasma activated water is prepared in a non-circular circulation mode; and thirdly, the mixing time of the gas-liquid mixed fluid in the preparation device of the plasma activated water is long, so that the waste of the active particles can be prevented.

The invention relates to a diatomic iron-iron site nano-enzyme constructed by relieving oxidative stress and cartilage degeneration and used for targeted osteoarthritis treatment. According to the invention, a nitrogen-doped porous carbon anchored diatomic iron nano enzyme catalyst (Fe2-NCs) with Fe-Fe dimer coordination is developed by using a'subject-object 'strategy. The Fe2-NCs protect cartilage cells from oxidative stress induced apoptosis by modulating ROS and active nitrogen species (RNS) and promoting O2 release. In addition, Fe2-NCs restores mitochondrial function by inhibiting NOX4 expression, improving ATP production, and normalizing COXIV levels. In an in-vivo OA model, the Fe2-NCs can reduce the expression of a pro-inflammatory medium COX-2 through an NF-kappa B signal channel, inhibit the up-regulation of MMP-13 and delay the degradation of type II collagen. The invention provides a new theoretical framework and methodological approach for the treatment of osteoarthritis, and has important clinical and scientific significance.

A preparation method of a high-activity nitrogen-doped carbon-loaded CoRu nano-alloy is used for enhancing pH universal hydrogen evolution, and is characterized by comprising the following steps: dissolving dopamine hydrochloride in an aqueous solution containing H2O2 and CuSO4. 5H2O, and magnetically stirring to form a uniform mixture; and pre-wetting carbon cloth with ethanol, immersing the pre-wetted carbon cloth in the dopamine solution for 10 minutes, taking out the pre-wetted carbon cloth, washing the pre-wetted carbon cloth with deionized water for three times, and carrying out vacuum drying to obtain the polydopamine modified carbon cloth marked as PDA / CC. And immersing the obtained PDA / CC into 20 mL of aqueous solution containing Co (NO3) 2.6 H2O and RuCl3 for 6 hours to realize metal ion adsorption. And washing and drying a sample, and calcining the sample in a tubular furnace at 700 DEG C in an N atmosphere for 2 hours to obtain the self-supporting nitrogen-doped porous carbon-loaded CoRu alloy material which is recorded as CoxRu (at) CN / CC. Through a synthesis strategy based on active ion capture and in-situ carbon thermal reduction, and through construction of a nitrogen-doped carbon cobalt ruthenium alloy nanostructure and a strong metal-carrier synergistic effect, efficient hydrogen overflow and establishment of stable active sites are realized; therefore, the performance bottleneck that high activity and high stability of a traditional electrocatalyst in a wide pH range are difficult to cooperate is broken through.

The application discloses a microbial electrochemical system device and method for realizing wastewater treatment, CO2 fixation and in-situ synthesis of microbial protein synchronously, which comprises an anode chamber, a cathode chamber, a protein production chamber, a power supply, a mixed gas tank and a peristaltic pump; the anode chamber, the cathode chamber and the protein production chamber are sequentially arranged from left to right; a cation exchange membrane is arranged between the anode chamber and the cathode chamber; a cation exchange membrane is also arranged between the cathode chamber and the protein production chamber; an anode is arranged in the anode chamber and connected with the positive pole of the power supply through a wire, and a resistor is arranged on the wire connecting the anode and the positive pole of the power supply. The microbial electrochemical system and the protein production system are coupled to form an ammonia-nitrogen recovery-in-situ protein synthesis microbial electrochemical system, the system can convert active nitrogen into high-value protein products in-situ, the system can synchronously treat wastewater, recover ammonia-nitrogen and fix carbon dioxide, and has excellent environmental benefits.

The invention relates to the field of active nitrogen testing, and discloses a double-flow reactor experimental device for measuring active nitrogen discharge and reaction rate, the double-flow reactor experimental device comprises a reaction mechanism and an irradiation mechanism, the reaction mechanism comprises a first reactor, and the outer surface of the first reactor is provided with a constant-temperature water layer; the second reactor is communicated with the first reactor through a first connecting pipe; the ozone analyzer is mounted on the first connecting pipe; the two dryers are mounted on the first connecting pipe, and a constant-temperature water layer outside a first reactor in the reaction mechanism can stably control the temperature and store a soil sample; the second reactor is communicated with the first reactor through a first connecting pipe and used for particle membrane samples; the ozone analyzer, the NOx analyzer and the dryer on the first connecting pipe can synchronously detect the concentration of related gas, and the dryer can eliminate water vapor interference; the problem of measuring the key parameters of the active nitrogen under the background of farmland nitrogen application and urban agglomeration nitrate pollution is solved, and the method has the advantages of multi-parameter synchronous analysis, accurate environmental condition simulation, low-interference detection and the like.

The invention discloses a light-driven nitrogen cycle pyrolysis-gasification biomass graded utilization system and method, and relates to the technical field of biomass graded utilization, the system comprises a pretreatment unit, a light-driven nitrogen-doped pyrolysis reactor and a photocatalytic nitrogen de-intercalation gasification reactor as core parts, an energy collection unit and a post-treatment unit. The method comprises condensation ammonia-doped pyrolysis and condensation gasification: pretreated biomass is subjected to condensation ammonia-doped pyrolysis in a pyrolysis section to generate high-activity nitrogen-doped coke and hydrogen, then the nitrogen-doped coke enters a gasification section to be subjected to condensation gasification, under the action of high-concentration water vapor, nitrogen elements in the coke are deintercalated, more active sites are released, NH3 is generated at the same time, and the nitrogen-doped coke enters the gasification section to be subjected to condensation gasification; the nitrogen can flow back to the pyrolysis zone for cyclic utilization, and a nitrogen doping-de-intercalation catalytic cycle process is formed. The light-driven nitrogen cycle grading technology is adopted, efficient doping of nitrogen elements at the high temperature is achieved, high-activity nitrogen-doped coke is generated, and production of high-quality synthesis gas and cyclic utilization of nitrogen are achieved.

A plasma-assisted green ammonia synthesis system capable of self-maintaining operation belongs to the field of chemical engineering and electrochemistry and comprises an air pretreatment module, an ammonia electricity synthesis module and a water supply device. The air pretreatment module is driven by a high-voltage power supply, adopts a dielectric barrier discharge form and is used for efficiently activating nitrogen and oxygen in air, and airflow rich in active nitrogen species is input into an absorption buffer chamber of the ammonia electricity synthesis module through a gas conveying pipeline, is converted into NOx <-> and then enters an electrolysis cathode chamber to be reduced into ammonia; the chambers are accurately separated through anion exchange membranes and cation exchange membranes, so that selective transmission of ions and efficient separation of materials are realized; and the water supply device continuously supplies water to the electrolytic anode chamber to provide a water source required by ammonia synthesis. The method is simple and convenient to operate, supports distributed deployment, can realize continuous ammonia electricity synthesis by taking air and water as raw materials without any electrolyte maintenance, has the remarkable advantages of simple process, stable operation, environment friendliness and the like, and provides a brand new solution for green ammonia synthesis.

The invention discloses a nitrogen fixation device and a nitrogen fixation method based on alternating current plasma bilateral electrode discharge. The device adopts a pair of electrodes which are respectively connected with a high-voltage end and a low-voltage end and are arranged at the top of a sealed reaction tank, so that the two electrodes can discharge to the surface of an aqueous solution to form stable double-side discharge plasmas. A metal or metal oxide coating (such as TiO2, Pt, CuO and the like) is deposited on the surface of the discharge end of the electrode through a physical or chemical means, so that the breakdown voltage of liquid phase discharge can be reduced, the heat loss caused by excessive discharge is inhibited, and the energy utilization efficiency is improved. In the reaction process, mixed gas containing nitrogen serves as a gas source, nitrogen-containing products such as NH4 < + >, NO2 <-> and NO3 <-> are generated in an aqueous solution under the action of active nitrogen-oxygen groups generated by discharging, and the nitrogen-containing products are collected through reaction liquid and tail gas absorption liquid respectively. The device is simple in structure, the raw materials are easy to obtain, the discharge stability is excellent, the nitrogen fixation energy consumption is remarkably reduced through the synergistic effect of double-side discharge and an electrode surface coating, the nitrogen fixation yield is increased, and the device is suitable for distributed, miniaturized or green nitrogen fixation scenes.

The invention discloses a preparation method of a nano-enzyme preparation as well as a product and application of the nano-enzyme preparation. The synthesis method of the nano-enzyme preparation comprises the following steps: mixing a transmembrane protein solution and a solution containing one or more nano-enzymes to prepare the nano-enzyme preparation. The nano-enzyme can target a disease site, and on one hand, the nano-enzyme removes active oxygen and active nitrogen species on the disease site; on the other hand, the nano-enzyme can be combined with cytokines of disease parts, the promotion effect of the cytokines on diseases is inhibited, and the effect of preventing and treating colitis and colitis-related colon cancer diseases is achieved. The nano-enzyme developed by the invention not only can relieve oxidative stress of diseases, but also can reduce the pro-inflammatory and tumor-promoting effects of cytokines, and can effectively treat colitis-related colon cancer caused by deterioration of colitis.

The invention discloses a bimodal plasma activation fog fruit fresh-keeping device and method based on ethylene precise regulation and control. The device comprises a treatment cabin, a plasma generation unit and a gas-liquid mixing unit. The plasma generation unit comprises a first discharge module and a second discharge module; the first discharge module discharges in a specific proportion of He / N2 / O2 mixed gas to generate first plasma rich in strong oxidizing active oxygen species, and the first plasma is used for efficiently killing surface pathogenic bacteria and oxidizing and decomposing ethylene gas released by fruits; and the second discharge module adopts low-duty-ratio pulse discharge under inert gas to generate second plasma rich in active nitrogen species, and the second plasma is used for mildly permeating the interior of the fruit skin and inhibiting the activity of the endogenous ethylene synthesis key enzyme. According to the method, ethylene metabolism is accurately regulated and controlled through external elimination and internal suppression bimodals, an ethylene regulation and control closed loop is constructed, the environmental ethylene concentration can be continuously maintained to be 0.1 ppm or below, and fresh keeping of respiration climacteric fruits is achieved.

The invention discloses an anti-aging ganoderma lucidum polysaccharide-milk composition and a preparation method and application thereof.The preparation method includes the steps that ganoderma lucidum sporocarp serves as a raw material, after superfine pretreatment is conducted, ganoderma lucidum polysaccharide is extracted in a free radical mediation mode, the polysaccharide yield is effectively increased, and the activity of the polysaccharide is effectively improved; and then active oxygen free radicals (. OH) and active nitrogen free radicals (DPPH) are respectively used as indexes to preferably select the ganoderma lucidum polysaccharide-milk composition with the optimal synergistic interaction ratio, so that the antioxidant activity of the ganoderma lucidum polysaccharide is improved. The ganoderma lucidum polysaccharide-milk composition preferably selected by the method disclosed by the invention not only has the nutritional values of polysaccharide and milk, but also synergistically enhances free radical scavenging, oxidative stress resistance and aging resistance, so that high-quality utilization of ganoderma lucidum and milk is realized.

The application relates to the field of active nitrogen testing, and discloses a double-flow reactor experimental device for measuring active nitrogen emission and reaction rate, which comprises a reaction mechanism and an irradiation mechanism, the reaction mechanism comprises a first reactor, the outer surface of the first reactor is provided with a constant-temperature water layer, a second reactor is connected with the first reactor through a first connecting pipe, an ozone analyzer is installed on the first connecting pipe, and two dryers are installed on the first connecting pipe; the constant-temperature water layer outside the first reactor in the reaction mechanism can stably control the temperature and store soil samples; the second reactor is connected with the first reactor through the first connecting pipe and is used for particulate matter film samples; the ozone analyzer, an NOx analyzer and the dryers on the first connecting pipe can synchronously detect the concentrations of related gases, and the dryers can eliminate water vapor interference; the double-flow reactor experimental device solves the problem of measuring key parameters of active nitrogen under the background of farmland nitrogen application and nitrate pollution in urban groups, and has the advantages of synchronous analysis of multiple parameters, accurate simulation of environmental conditions, low-interference detection and the like.

One aspect relates to a gold nanozyme containing glycol chitosan and gold particles, and a pharmaceutical composition containing the same for preventing or treating inflammatory bowel disease. It has been confirmed that the gold nanozyme according to one aspect and a composition containing the same suppress the expression of inflammatory factors, inhibit the production of intracellular reactive oxygen species (ROS) and reactive nitrogen species (RNS), and reduce the production of intracellular nitric oxide (NO). It has also been confirmed that when the gold nanozyme further contains glycyrrhizin, it inhibits the secretion of HMGB1 (High mobility group box 1). It has also been confirmed that the gold nanozyme and a composition containing the same restore the length and weight of damaged colon, making it suitable for use in the industry / market for the prevention and / or treatment of inflammatory bowel disease.

The invention discloses a process for strengthening flotation of cuprite through nitrogen plasma surface reconstruction, which comprises the following steps of: crushing high-calcium and high-silicon cuprite, performing dry ball milling, and screening to obtain cuprite powder; the cuprite powder is evenly placed in a plasma reaction chamber, nitrogen is introduced, and high-activity nitrogen plasma selectively acts on the surface of cuprite; pulp mixing and sulfuration treatment: adding ultrapure water into the cuprite powder, uniformly stirring, then adjusting the pH value of the pulp, and then carrying out sulfuration treatment; and flotation separation and product collection are conducted, specifically, a collecting agent and a foaming agent are sequentially added into the cuprite ore pulp, flotation operation is conducted, and efficient separation of cuprite and gangue minerals is achieved. According to the method, selective surface reconstruction is conducted on the cuprite powder through the nitrogen plasma, the floatability difference between the cuprite and gangue minerals is enlarged, targeted strengthening of the vulcanization reaction activity and the adsorption capacity of the collecting agent is achieved, and the cuprite vulcanization flotation recovery rate and the concentrate Cu grade are improved.

This invention discloses a solution for inhibiting keloids and its preparation method. Physiological saline is treated with low-temperature atmospheric pressure plasma (CAP) to become activated saline. The activated saline contains a large amount of reactive oxygen species and reactive nitrogen species. After injection into the body, its active ingredients induce disulfide death in fibroblasts derived from keloids, thereby inhibiting keloid formation. Compared with existing methods for inhibiting keloids, this application has several unique advantages. First, the effect and degree of CAP activation on fibroblast life and death are dose-dependent, allowing for precise control of the effect. Second, the full spectrum of active species generated by CAP can synergistically act on multiple biological targets, reducing the risk of recurrence. Third, CAP is administered through the process of generating an activated solution from a liquid medium, enabling non-invasive or minimally invasive drug delivery and greatly reducing the risk of systemic toxicity. Finally, CAP technology avoids complex biological agent preparation processes, making it simpler to operate and lower in cost. This invention fills the gap in research on low-temperature atmospheric pressure plasma inhibition of keloids.

The invention belongs to the technical field of livestock and poultry manure management and utilization, and provides a method for realizing emission reduction synergy of production of padding, greenhouse gas and active nitrogen gas through rapid and safe fermentation of cow dung residues under a cold condition, and a heating plate is arranged at the bottom of a pile body to realize heating of cold air output from an aeration pipe at the bottom; and in combination with the ascending flow of the air flow in the pile body, the whole large pile body at the upper part can be effectively heated, and the high-temperature period lasts until the fermentation is finished, so that a good fermentation effect is achieved. Start-stop feedback control of the heating plate is realized by monitoring the temperature of the pile body, so that the energy consumption is effectively reduced, and the cost is greatly reduced. The method has the synergistic effects of promoting efficient and safe fermentation of excrement to produce padding and reducing emission of harmful gases in the environment under the cold condition in winter, is simple to operate, realizes efficient value-added utilization of wastes, and has important value and significance for solving the practical problems of excrement treatment and resource utilization in dairy farms.

The utility model discloses a kind of overflow type plasma activated hydrogen peroxide systems, belong to electrochemical synthesis and green disinfection technical field, it includes electrolysis subsystem, plasma activation subsystem and high-pressure excitation and monitoring subsystem, electrolysis system is converted into high-purity hydrogen peroxide aqueous solution by the oxygen reduction reaction of reaction electric pile cathode side to pure water, anode side circulation electrolysis pure water;Plasma activation system adopts inclined sealing shell, inside is equipped with dielectric barrier discharge unit and liquid film formation unit, hydrogen peroxide solution forms uniform liquid film under the action of baffle, and active oxygen or active nitrogen group is generated with plasma reaction, high-pressure excitation and monitoring system real-time control discharge parameter.The utility model realizes the stable preparation and in-situ high-efficiency activation of high-purity hydrogen peroxide, with compact structure, low energy consumption, high sterilization efficiency and the like, suitable for medical, food processing and other fields of rapid disinfection.

The invention discloses a preparation method of a porous nitrogen-doped carbon carrier loaded multivalent iron active center. The method comprises the following steps: crushing the waste biomass, mixing the crushed waste biomass with a Fe precursor solution composed of FeCl2, FeCl3, citric acid and ascorbic acid, dipping, and evaporating to dryness to obtain a pretreated sample; then high-temperature pyrolysis treatment is carried out in the ammonia gas atmosphere, by regulating and controlling the pyrolysis temperature and the proportion of the Fe precursor solution, iron species are gradually reduced, active nitrogen species generated through ammonia gas pyrolysis are doped into a carbon skeleton, nitrogen sites anchor iron particles, lone pair electrons of pyridine nitrogen and pyrrole nitrogen coordinate with iron atoms, a Fe-Nx active center is formed, iron particles are prevented from being migrated and agglomerated, and a Fe-Nx composite material is obtained; the porous nitrogen-doped carbon material loaded with different forms of iron (such as elemental iron, iron oxide, iron nitride and the like) is obtained. The method is simple in process and low in cost, and the obtained material has high specific surface area and rich active sites and can be widely applied to the fields of supercapacitors, catalysis and the like.

The invention discloses a method for preparing high-performance iron-nitrogen alloy powder based on cooperation of active ammonia atomization and nitridation, and belongs to the field of metal powder metallurgy. The method comprises the steps that firstly, pure iron or iron-based alloy containing vanadium, chromium, molybdenum and other microalloy elements is smelted into melt under the controlled atmosphere, then the melt is guided into an atomizing nozzle, and the atomizing nozzle is used for atomizing the pure iron or the iron-based alloy containing the vanadium, the chromium, the molybdenum and other microalloy elements; preheated high-pressure ammonia gas is synchronously introduced to serve as an atomizing medium, the ammonia gas is decomposed to generate active nitrogen and hydrogen, and atomization crushing, in-situ nitridation and reduction protection collaboration are achieved; quenching and curing the liquid drops at an ultrahigh cooling rate to form a non-equilibrium structure; and finally annealing to obtain a finished product. By means of an atomization-reduction-nitridation integrated mechanism, the problems that a traditional method is long in period, uneven in nitrogen distribution and the like are solved, phase composition and performance of powder can be accurately regulated and controlled, and the product has excellent magnetic and mechanical properties.

The invention discloses a livestock source multiple active nitrogen gas emission calculation method based on total ammonium nitrogen and total nitrogen conservation. According to the method, the annual average breeding amount of 23 kinds of livestock is utilized, the three breeding modes of intensive breeding, free-ranging and grazing are distinguished according to different breeding scales and sites, and according to the mass conservation principle of total ammonium nitrogen and total nitrogen, high-resolution emission data of ammonia gas, nitric oxide and nitrous oxide are calculated month by month; and the seasonal change of emission is further corrected in combination with meteorological conditions. According to the method, based on the mass conservation principle of total ammonium nitrogen and total nitrogen, more accurate emission data can be provided, the high temporal-spatial resolution is achieved, meanwhile, the livestock source multiple active nitrogen emission list with the high temporal-spatial resolution is calculated, and comprehensive data support is provided for cooperatively improving air quality and slowing down climate change.

The invention provides an open type in-situ deodorization system and method for MOF-DBD synergistic active species release and application, and the system comprises a DBD active species generation unit which is used for in-situ release of oxygen free radicals, hydroxyl free radicals, ozone and active nitrogen oxides in an open air environment and preliminary oxidation of ammonia gas, hydrogen sulfide and volatile organic compounds; and the MOF light-oxygen catalysis unit is arranged at the downstream or adjacent area of the DBD active species generation unit in an open manner and is used for carrying out catalytic decomposition on byproducts generated by the DBD active species generation unit under the action of light and further converting the byproducts into harmless or high-reactivity oxide species. The device can efficiently degrade ammonia gas, hydrogen sulfide and volatile organic compounds generated in livestock and poultry breeding and other scenes, has the advantages of high removal efficiency, low energy consumption, long material service life and stable operation, and is suitable for tail end deodorization and industrial waste gas treatment of farms.

The invention relates to the technical field of metal surface treatment, and discloses metal surface low-temperature nitriding strengthening equipment based on plasma catalysis, which comprises a nitriding furnace body and a furnace seat, the nitriding furnace body is arranged above the furnace seat, the nitriding furnace body is provided with an air inlet, a hanging ring and a ladder stand, and the surface of the nitriding furnace body is also provided with an observation window. According to the nitriding device, the placing mechanism is arranged, a workpiece is placed on the placing frame, a clamping assembly in the overturning frame is matched with a pushing assembly to clamp the workpiece, in the nitriding process, the overturning assembly can drive the workpiece to overturn, and the lifting assembly can drive the supporting frame to move, so that overturning is convenient; after the workpiece is overturned, the supporting frame is reset for supporting, meanwhile, the clamping assembly loosens clamping of the workpiece, at the moment, the shielding end, making contact with the containing part originally, of the shaft workpiece is exposed, the shielded part can directly receive active nitrogen species in plasma, insufficient local nitriding is reduced, and it is ensured that the workpiece is subjected to comprehensive nitriding.

The present invention discloses a simplified method for recommending nitrogen fertilizer dosages for winter wheat based on a nitrogen balance standard, relating to the field of agricultural resources and environmental technology. This method, based on a nitrogen balance standard, recommends nitrogen fertilizer dosages for wheat. This method only requires understanding wheat yield and soil fertility level to make recommendations. While ensuring crop yield, it minimizes nitrogen surplus in the soil, thereby reducing the environmental loss of reactive nitrogen and promoting high-yield, efficient, and sustainable agricultural development.

The application belongs to the technical field of nanobubble hydrate preparation, and discloses a multi-field coupling ozone and active particle hydrate generating device, which comprises: a main machine, an inner cavity of which comprises an electrolysis area and an ionization area; an ultrasonic generator, which is installed to the main machine and acts on the inner cavity; a venturi pipe, an outlet of which is connected to the electrolysis area of the main machine to feed the micro-nanobubble water formed by mixing air and water into the electrolysis area; and a water outlet pipe, an inlet of which is connected to the ionization area of the main machine. The electrolysis area and the ionization area are horizontally arranged and are separated by an electrode partition. In summary, the device generates hydrates containing strong oxidizing substances such as ozone, active oxygen, active nitrogen and free radicals through the multi-field coupling effects of venturi gas-liquid mixing, electrolytic air floatation pretreatment, ultrasonic enhanced bubble splitting and triggered ionization electric field plasma waterfall, and can also effectively improve the number and stability of ozone nanobubbles in the hydrates.

This invention relates to the field of biomedical antibacterial nanomaterials technology, specifically to an L-arginine-functionalized TiO2. 2‑x Preparation method and application of MXene composite nanomaterials. The preparation method of this invention includes: preparing Ti3C2T using the LiF / HCl in-situ etching method. x MXene dispersion; Ti3C2T x MXene is mixed with glycerol and then subjected to a hydrothermal reaction, forming TiO2 in situ on the MXene surface. 2‑x TiO 2‑x -MXene; further functionalization with L-arginine yields LA@TiO 2‑x -MXene composite nanomaterials. The materials of this invention exhibit excellent near-infrared photothermal response and ultrasonic response acoustic dynamic activity, and can generate NO and ONOO under ultrasonic stimulation. ‑ The materials of this invention can be used to prepare anti-MRSA antibacterial materials, anti-biofilm materials, antibacterial dressings, or antibacterial coatings for medical device surfaces, exhibiting synergistic antibacterial effects of photothermal, acoustic dynamic, and active nitrogen species.

The application relates to a self-sustaining operation plasma-assisted green ammonia synthesis system, belonging to the fields of chemical engineering and electrochemistry, and comprising an air pretreatment module, an ammonia electrolysis module and a water supply device. The air pretreatment module is driven by a high-voltage power supply and adopts a dielectric barrier discharge form, is used for efficiently activating nitrogen and oxygen in air, and inputs a gas flow rich in active nitrogen species into an absorption buffer chamber of the ammonia electrolysis module through a gas delivery pipeline, so that the active nitrogen species are converted into NO x ‑ The reduced ammonia enters an electrolysis cathode chamber, is reduced into ammonia, each chamber is accurately separated through a cation and anion exchange film, ion selective transmission and material efficient separation are realized; the water supply device continuously supplies water to the electrolysis anode chamber, and provides a water source required by ammonia synthesis. The application has the advantages of simple operation, distributed deployment, continuous ammonia electrolysis synthesis with air and water as raw materials without any electrolyte maintenance, simple process, stable operation, environmental friendliness and the like, and provides a new solution for green ammonia synthesis.

The application discloses a nitrogen oxide treatment agent and a preparation process thereof, and relates to the technical field of air pollution treatment and environmental protection. The composite alkaline component is composed of a sodium-based compound and an activator; the nitrogen-containing reducing agent is a pyrolytic nitrogen-containing organic matter; the stabilizer system is composed of a thickening agent and a chelating agent; and the solvent is deionized water. The composite alkaline component is used for providing an alkaline environment, assisting in oxidizing low-valence nitrogen oxides, and accelerating the decomposition of nitrogen oxides. x The nitrogen-containing reducing agent generates active nitrogen species under alkaline conditions, and the active nitrogen species and NO x react to generate nitrogen and water through a reduction reaction. In the application, the sodium-based compound, the activator and the pyrolytic nitrogen-containing organic matter realize the efficient removal of NO The application solves the technical problems of high treatment cost and low efficiency in current environmental pollution, and does not need to be catalyzed by an expensive catalyst.

The invention relates to a liquid plasma activating treatment method and device. The method comprises the steps that liquid to be treated is sealed in a container, gas containing oxygen and nitrogen is introduced, the liquid level is controlled to be located below the plasma discharge structure by adjusting the limiting stopper, and activation treatment is conducted by means of plasma generated through dielectric barrier discharge. The device adopts a multi-accommodating-cavity parallel processing structure, is equipped with a limiter to accurately adjust the liquid level position, and integrates a power supply module, a control module and a temperature control system to realize high-flux and non-contact activation. The method is suitable for treating platelet-rich plasma, promotes platelet to release growth factors by increasing the concentration of active oxygen and active nitrogen components, and enhances the biological activity of the platelet. According to the scheme, the problems of complicated operation, pollution risk and low automation degree in the prior art are solved.

The present invention relates to a plasma filter for purifying contaminated air in the atmosphere, comprising a housing having a fluid flow path formed in the direction of air flow, a charging section disposed at the inlet side of the fluid flow path, a dust collection section including at least one dust collection electrode disposed spaced apart from the charging section and extending to the outlet side of the housing while being disposed in a direction parallel to the fluid flow path, and at least one surface dielectric barrier discharge source, wherein pathogens are charged in the charging section, a DC high voltage is applied to at least one collecting electrode to induce the charged pathogens to the surface dielectric barrier discharge source or the surface of the collecting electrode, an AC or pulse voltage is applied to the surface of the surface dielectric barrier discharge source to generate a surface dielectric barrier discharge plasma, and pathogens are disinfected by the generated plasma and / or active oxygen species or active nitrogen species generated by the plasma.