72 results about "Adsorption kinetics" patented technology

The invention relates to the technical field of biological separation materials, and discloses an amine-functionalized magnetic nano composite material and application thereof in protein separation and purification. The material has a core-shell structure and comprises a magnetic ferroferric oxide nano core, an ordered mesoporous silicon dioxide intermediate layer and a covalent grafted polyethyleneimine functional layer. By controlling the matching relationship between the pore diameter of mesopores and the molecular size of the polymer and adopting a crosslinking strategy, the material has high magnetic responsiveness, rapid mass transfer performance and high-density surface amino groups. The material shows high adsorption capacity, rapid adsorption kinetics and good cycle stability in the protein separation process, and is suitable for enrichment purification and metal chelating affinity separation of protein in a biological sample. According to the invention, the technical problems of low protein adsorption capacity, slow dynamics and poor cycling stability caused by compact shell layer, non-uniform amino distribution and limited mass transfer of the existing amine functionalized magnetic material are solved.

The invention relates to the technical field of radionuclide separation, in particular to an Eu (III) / An (III) separation method based on a zirconium phosphonate-based metal organic framework adsorbent, which comprises the following steps: adding the zirconium phosphonate-based metal organic framework adsorbent into an Eu (III) and / or An (III) nuclide-containing aqueous solution with the acid concentration of 0.001-3M to carry out adsorption reaction, and then carrying out solid-liquid separation, wherein the zirconium phosphonate-based metal organic framework adsorbent is a zirconium phosphonate-based metal organic framework material exchanged by metal cations M; the metal cation M is selected from one of alkali metal ions, alkaline earth metal ions or divalent transition metal ions. According to the invention, the interlayer chemical properties of the material are regulated and controlled through ion exchange, so that the adsorbent has ultrahigh selectivity, rapid adsorption kinetics, high adsorption capacity and excellent structural stability on trivalent actinide / simulated nuclides in extremely high-acid, high-salt and intense-radiation environments; the key problems of low separation efficiency and poor stability in a high-acid complex system in the prior art are solved, and the method is suitable for treating high-level liquid waste.

The invention discloses a preparation process of a composite rotating wheel for adsorption and dehumidification in a low-dew-point environment, which comprises the following steps: adding metal salt into a solution of a mixed organic ligand, adding an organic solvent, mixing with water, completely dissolving, carrying out solvothermal reaction, cooling to remove unreacted monomers and impurities, cleaning, and drying to obtain an MIL-101 (Cr) precursor adsorption material; the method comprises the following steps: dipping an adsorption material in different hygroscopic salt solutions to obtain a modified adsorption material; carrying out activating treatment; preparing the activated MIL-101 (Cr) adsorption material into slurry, coating the surface of glass fiber paper with the slurry, drying the glass fiber paper, and feeding the glass fiber paper into a rotating wheel; according to the present invention, the regular pore channel of MIL-101 (Cr) is adopted as the carrier so as to uniformly disperse the hygroscopic salt, such that the capture efficiency of the water molecules under the low humidity is enhanced, and the equilibrium adsorption capacity and the adsorption dynamic performance of the material under the low dew point environment are significantly improved;

The invention discloses preparation of a nitrogen-rich ionic organic single crystal material and application of the nitrogen-rich ionic organic single crystal material in iodine adsorption, and belongs to the technical field of functional materials and radioactive pollutant treatment. The material is formed by self-assembly at room temperature through a solution method by taking biphenyl tetracarboxylic acid tetrabutylamine as an anion ligand and tetra (4-ethyl pyridine phenyl) ethylene bromide or tetra (4-imidazole phenyl) ethylene bromide as a cation ligand. The method is simple in preparation process, mild in condition and high in yield. The skeleton of the obtained material is rich in nitrogen sites and has a large cavity, the material shows extremely high adsorption capacity and rapid adsorption kinetics for iodine in a gas phase and a liquid phase, the maximum adsorption capacity of the material for iodine steam reaches up to 5.16 g / g, the retention rate of 95% or above can still be kept within 7 days after adsorption, and the material has good recycling performance. The material provides a novel and reliable solution for efficiently capturing and fixing radioactive iodine, and has a wide application prospect in the field of nuclear waste treatment.

The application discloses a detection technology based on micro-plastic adsorption of a micro-fluidic chip, which forms a detection area by fixing micro-plastic particles in a chip channel in situ through a sodium alginate and calcium chloride system, and deducts background interference synchronously by using a parallel reference channel, and then pumps a solution containing a target adsorbate into the chip at a controllable flow rate, and simultaneously, real-time in-situ optical monitoring of the adsorption process is carried out by using a fluorescence technology, finally, the adsorption kinetics parameters and the adsorption isotherm are quantitatively calculated by analyzing the signal and time curve and the concentration gradient experiment, and the determination of the maximum adsorption capacity is realized; the micro-plastic is fixed, dynamic adsorption, real-time monitoring and data processing are integrated on the micro-fluidic chip platform, the problems that the traditional method cannot realize real-time observation, the background interference is large and the operation is complicated are effectively solved, and efficient quantitative analysis of the adsorption behavior of the micro-plastic is realized.

The invention discloses a magnetic geopolymer as well as a preparation method and application thereof, and relates to the technical field of solid waste resource utilization and wastewater treatment. The preparation method comprises the following steps: drying nickel slag, crushing and grinding, adding calcium oxide to adjust alkalinity, and heating and melting to obtain a nickel slag melt; the nickel slag melt is subjected to water quenching, and magnetic slag micro powder is obtained through drying, crushing and screening; and mixing the magnetic slag micro powder with an alkaline activator, injecting the mixture into a mold, performing constant-temperature maintenance, demolding, and crushing to obtain the magnetic geopolymer. The magnetic geopolymer prepared by the invention has high adsorption capacity and rapid adsorption kinetics for multiple heavy metal ions in water, and has excellent magnetic separation performance.

This invention discloses a covalent organic framework material for selective solid-phase adsorption and separation, its preparation method, and its applications. The material is prepared by polycondensation reaction of electron-deficient triazine rings with short-chain linkers such as hydrazine hydrate, forming a layered structure with a high specific surface area of ​​602 m² / g and a concentrated pore size of 2.0 nm to 3.0 nm. This structure exhibits high adsorption capacity (up to 1.0 mg / g), rapid adsorption kinetics, and excellent selectivity for PAHs in organic solutions through strong π-π interactions and pore confinement effects. The preparation process is simple and the conditions are mild. The material has good thermal stability (>300℃), and its performance retention rate is higher than 92% after 5 cycles. When applied to the solid-phase adsorption of PAHs in petroleum products such as lubricating oil and white oil, it effectively eliminates matrix interference, allowing direct analysis without complex purification steps after adsorption. This overcomes the limitations of traditional materials such as silica gel and activated carbon, which have weak adsorption capacity and require cumbersome post-treatment, providing a new high-performance adsorption material solution for the efficient detection of trace PAHs in petroleum products.

The invention relates to the technical field of water treatment intelligent control, and discloses a biochar adsorption capacity dynamics simulation and prediction system, which comprises a data acquisition module, an Arrhenius equation is utilized to introduce a temperature correction coefficient to carry out thermodynamic compensation on an adsorption dynamics constant; the flow state recognition module judges a forward adsorption or reverse desorption working condition based on a Langmuir model; the resistance decoupling module is used for calculating a mass transfer Biot number based on a double-membrane theory so as to distinguish diffusion resistance in a liquid membrane and particles, and distinguishing physical blockage and chemical saturation by utilizing a physical blockage index; the lag compensation module introduces a lag correction factor to correct the desorption equilibrium concentration, and calculates the recovery adsorption capacity during the reverse desorption period; and the life prediction module corrects the theoretical residual capacity by using the dynamic utilization rate coefficient and generates an operation and maintenance instruction. According to the invention, through resistance decoupling and lag compensation mechanisms, physical and chemical attenuation mechanisms are effectively distinguished, and accurate prediction of the adsorption penetration time under the dynamic working condition is realized.

The present application relates to the technical field of gas monitoring, and is a kind of sulfur hexafluoride gas on-line monitoring system and method, specifically comprising: constructing surface adsorption kinetics equation to obtain the real-time surface adsorption amount of sulfur hexafluoride arc extinguishing decomposition product in the key components of arc extinguishing chamber;According to the thermal ablation term, the metal vapor generation rate is calculated;Establish a physical evaluation model for the influence of the surface adsorption layer in the arc extinguishing chamber on the flow field performance and heat transfer performance, and evaluate the flow field distortion factor and the thermal recovery retardation factor;Combined with the spatial position sensitive weight, the working performance degradation index of sulfur hexafluoride is predicted;According to the working performance degradation index of sulfur hexafluoride, the trigger judgment of sulfur hexafluoride monitoring alarm is carried out.The present application solves the problem that the gradual degradation of sulfur hexafluoride arc extinguishing ability cannot be accurately predicted and early warned in the prior art.

The application provides a kind of test device and method of gas-liquid competitive adsorption under the simulation reservoir electric field environment, it is related to oil and gas field development experimental simulation technical field, the device includes QCM-D host computer, special electric field flow cavity, high voltage power supply, fluid injection system and signal isolation and shielding system;The method comprises: establishing baseline, monitoring crude oil adsorption kinetics, under the application of high voltage electric field, monitoring displacement gas competitive desorption kinetics, and generating evaluation results based on frequency and dissipation dual parameter changes.The application realizes real-time, in-situ, quantitative monitoring of gas-liquid competitive adsorption microprocess on the surface of QCM-D chip under the environment of kilovolt high voltage electric field for the first time through vertical transmission type non-contact electric field loading cavity and high voltage-weak signal isolation circuit, and can distinguish the different effects of electric field on mass desorption and interface rheological change, providing a reliable experimental tool and analysis method for revealing the micro mechanism of electric field enhanced oil displacement.

The application relates to the technical field of carbon dioxide capture, in particular to a CO2 adsorbent based on Fe-based aluminophosphate and a preparation method thereof. The preparation method comprises the following steps: 1) mixing aluminum isopropoxide with water, dissolving under stirring, and then sequentially adding orthophosphoric acid and a structure directing agent to form a reaction gel; 2) adding a Fe precursor solution and additional water into the reaction gel obtained in the step 1) to form a doped system; wherein the aluminum isopropoxide is converted into Al2O3 at the mole number of aluminum atoms, and the mole ratio of the additional water to Al2O3 is 100-250:1; 3) carrying out hydrothermal reaction on the doped system obtained in the step 2) in a reaction kettle to obtain Fe-doped ALPO crystals; and 4) continuously activating the Fe-doped ALPO crystals obtained in the step 3) to obtain the CO2 adsorbent based on Fe-based aluminophosphate. The application solves the problems of the CO2 adsorbent in the prior art in the aspects of adsorption capacity, adsorption kinetics, thermal stability and chemical stability.

The application belongs to the technical field of marine environmental protection and functional materials, and particularly relates to a marine oil stain adsorbing material based on a mussel bionic structure, a preparation method and a device, which comprises a porous base material, a polydopamine interface layer and a metal-polyphenol network; the porous base material has three-dimensionally connected pores; the polydopamine interface layer is formed on the surface and internal pores of the porous base material through self-oxidation polymerization of dopamine; and the metal-polyphenol network is formed by coordination of transition metal ions and plant polyphenols on the polydopamine interface layer. By constructing a PDA-metal-polyphenol ternary synergistic interface, efficient capture and firm combination of high-viscosity crude oil are realized, a hierarchical porous structure is induced to form through an ozone rapid polymerization method, and the adsorption kinetics and thermodynamic performance are comprehensively improved, and after saturation of the material, the material can be quickly recovered through an external magnetic field, and regeneration can be realized through pH adjustment or heating.

The invention relates to the technical field of adsorption materials, and particularly discloses a molecularly imprinted hydrogen bond organic framework adsorption material as well as a preparation method and application thereof. According to the material, tetra (4-sulfonyl phenyl) methane and 1, 1 '-diamino-4, 4'-dipyridyl diiodide are used as construction units to form a hydrogen bond organic framework substrate, and a hemp essence drug template molecule is introduced to construct a specific imprinting hole in the hemp essence drug template molecule. The preparation method is characterized in that the molar ratio X of template molecules to tetra (4-sulfonyl phenyl) methane is controlled to be 0.05-0.5, crystallization is performed in a water / methanol mixed solvent, and then elution and activation are performed through an acid solution with the pH being 2-4. The material has the advantages of high adsorption capacity, no less than 58 mg / g of template molecule adsorption capacity, high selectivity and rapid adsorption kinetics, achieves balance within 5 minutes, can efficiently enrich trace hemp extract drugs from a water environment or biological fluid, and solves the technical problem that the selectivity, the capacity and the mass transfer rate of the existing adsorption material are difficult to consider at the same time.

The invention relates to the technical field of environmental engineering and adsorption materials, in particular to a preparation method of a fluorinated polyaniline nanofiber membrane and application of the fluorinated polyaniline nanofiber membrane in removal of PFASs in water. The preparation method comprises the following steps: performing electrostatic spinning on a polyacrylonitrile solution to obtain a polyacrylonitrile nanofiber membrane; mixing aniline, m-fluoroaniline, an acid solution and an oxidant solution to obtain a fluorinated polyaniline precursor solution; the polyacrylonitrile nanofiber membrane is soaked in the fluorinated polyaniline precursor solution for a reaction, and a fluorinated polyaniline polyacrylonitrile nanofiber membrane is obtained; the adsorption capacity of the fluorinated polyaniline polyacrylonitrile nanofiber membrane to perfluorooctanoic acid in water reaches an unprecedented level, and meanwhile, the fluorinated polyaniline polyacrylonitrile nanofiber membrane has rapid adsorption kinetics and anti-interference performance. Moreover, the method can almost completely remove long-chain and short-chain PFASs in a plurality of real water bodies at an ultra-low concentration. In addition, excellent removal efficiency is still maintained after 10 times of regeneration cycles in a plurality of actual water bodies.

This research focuses on the preparation and application of guanidine-based ionic porous organic polymers for gold extraction from water, belonging to the field of porous organic polymer materials. Four guanidine-based ionic covalent organic framework materials (Ionic-COF-X, X:Cl) with different counterions were synthesized by reacting ionic guanidine hydrochloride monomers as organic linkers with aromatic ring-substituted triazine derivative ligands (TFBT), followed by anion exchange. ‑ ,Br ‑ AcO ‑ and SO4 2‑ A guanidine-based porous ionic polymer material (PiP-1) was obtained by reacting an ionic guanidine hydrochloride monomer as an organic linker with an aromatic ring-substituted benzimidazole derivative ligand (BDBI). PiP-1 was then applied to the adsorption and removal of gold ions in solution. It exhibited extremely high saturation adsorption capacity, rapid adsorption kinetics, high selectivity, and recyclability, showing potential for gold adsorption in practical applications.

The invention discloses gallium ion imprinted amidoxime-based macroporous resin as well as a preparation method and application thereof, and belongs to the technical field of functional polymer materials and separation. The method comprises the following steps: pre-assembling a gallium trichloride template and monomers such as acrylonitrile, generating monodisperse liquid drops by utilizing a microfluidic technology, polymerizing by combining ultraviolet light, eluting the template by hydrochloric acid, and performing amidoximation modification by a hydroxylamine hydrochloride alkaline solution, thereby obtaining the resin. The resin is a monodisperse spherical microsphere, has a macroporous structure, has high selective recognition capability and high adsorption capacity on gallium ions, is fast in adsorption kinetics and good in regeneration performance, and is suitable for selectively separating or enriching gallium ions from a complex solution system.

The present application relates to the pore-matrix parameter estimation method and system considering the non-equilibrium adsorption influence, including the steps: the pore-matrix system non-equilibrium reactive solute transport analytical model is established, and the semi-analytical solution is solved;Obtain the measured soil column experiment data, monitor the organic compound phenanthrene solute concentration of fixed observation point in the set time range to obtain the breakthrough curve;The semi-analytical solution obtained is fitted with the breakthrough curve of the measured data, the parameter value corresponding to the fitting curve meeting the set condition is selected, and the parameter value is used as the estimation value of the corresponding coefficient;The present application utilizes the optimal fitting wiring to determine the corresponding pore dispersion coefficient, diffusion coefficient, first-order adsorption kinetic coefficient in the pore and first-order adsorption kinetic coefficient in the matrix, links the measured results with the theoretical results, and fully excavates the utilization value of the existing data.

The application relates to the technical field of intelligent water treatment control, and discloses a system for simulating and predicting the kinetics of the adsorption capacity of biochar, which comprises the following modules: a data acquisition module uses the Arrhenius equation to introduce a temperature correction coefficient to perform thermodynamic compensation on adsorption kinetic constants; a flow state recognition module determines a forward adsorption or reverse desorption working condition based on the Langmuir model; a resistance decoupling module calculates the mass transfer Biot number based on the double membrane theory to distinguish the liquid film and the internal diffusion resistance of the particles, and uses a physical blockage index to distinguish physical blockage and chemical saturation; a hysteresis compensation module introduces a hysteresis correction factor to correct the desorption equilibrium concentration and calculate the recovery adsorption capacity during the reverse desorption; and a service life prediction module uses a dynamic utilization rate coefficient to correct the theoretical residual capacity and generate operation and maintenance instructions. Through the resistance decoupling and hysteresis compensation mechanisms, the physical and chemical attenuation mechanisms are effectively distinguished, and the precise prediction of the adsorption breakthrough time under dynamic working conditions is realized.

The invention provides a magnetic nano material for enriching benzimidazole compounds and application of the magnetic nano material. The magnetic nano enrichment material comprises a core body, wherein the core body is composed of superparamagnetic ferroferric oxide; the shell covers at least part of the surface of the core body, and the shell is made of a covalent organic framework material formed by a repeating unit as shown in a formula I in the specification. The enrichment material has a porous and ordered crystal structure and a high specific surface area, and shows excellent adsorption performance, including high adsorption capacity, rapid adsorption kinetics, good selectivity and reusability. Therefore, the benzimidazole compound in a complex sample can be efficiently enriched and purified, and an effective means is provided for trace detection of the compound residues in a food matrix.

The present application belongs to the technical field of analysis and detection, and particularly relates to an enrichment material of estrogen substances and an analysis method thereof. The enrichment material of estrogen substances (Fe3O4@SiO2@CMP-SO3Na) comprises a magnetic carrier and an ionic conjugated microporous polymer loaded on the surface of the magnetic carrier. The composite material exhibits high adsorption capacity, fast adsorption kinetics and excellent reusability by virtue of the synergistic effect of the conjugated system-ion group-porous structure. On this basis, the present application first establishes an MSPE-HPLC-MS / MS combined analysis method based on Fe3O4@SiO2@CMP-SO3Na, and successfully applies the method to efficient enrichment and accurate detection of trace EEs in food samples (such as honey, dairy products) and environmental water (such as surface water, wastewater).

The invention relates to the technical field of gas monitoring, in particular to a sulfur hexafluoride gas on-line monitoring system and method.The method specifically comprises the steps that a surface adsorption kinetic equation is constructed, and the real-time surface adsorption quantity of key components in an arc extinguish chamber to sulfur hexafluoride arc extinguish decomposers is obtained; calculating a metal vapor generation rate according to a thermal ablation item; establishing a physical evaluation model of the influence of the surface adsorption layer in the arc extinguish chamber on the flow field performance and the heat conduction performance, and evaluating to obtain a flow field distortion factor and a heat recovery retardation factor; combining the spatial position sensitive weight to predict the working performance degradation index of the sulfur hexafluoride; and according to the working performance degradation index of sulfur hexafluoride, performing triggering judgment of sulfur hexafluoride monitoring alarm. The problem that in the prior art, accurate prediction and early warning cannot be carried out on progressive degradation of the arc extinguishing capacity of the sulfur hexafluoride gas is solved.

This invention discloses an AI-based multi-channel dehumidification control method and system for a biodegradable instrument, including multi-channel gas distribution, primary condensation dehumidification, secondary adsorption dehumidification, sensor acquisition, AI intelligent monitoring, control execution, and feedback optimization. The AI ​​intelligent monitoring module, based on a physical information neural network, fuses data on temperature, humidity, flow rate, pressure, condensate volume, silica gel state, and energy consumption, and incorporates heat exchange, gas flow, adsorption kinetics, and energy balance constraints to predict outlet air humidity, dehumidification efficiency, silica gel lifespan, and abnormal states, automatically adjusting cooling power, circulating pump speed, valve opening, and drainage frequency. This invention enables adaptive control, predictive maintenance, and unattended operation of the multi-channel dehumidification process, improving detection stability and reducing maintenance costs.

This invention discloses a high-performance lithium-ion sieve particle adsorbent based on lattice engineering, its preparation method, and its application. The preparation method includes: thoroughly mixing and refining a lithium source, a titanium source and / or a manganese source, a doped metal oxide, and a first solvent; then performing solid-liquid separation and calcination to obtain a lattice-modified lithium-ion sieve precursor; acid eluting and delithiating the lattice-modified lithium-ion sieve precursor with a dilute acid solution to obtain modified adsorbent active powder; mixing the modified adsorbent active powder, a binder, a hydrophilic pore-forming agent, and a second solvent to form a composite slurry; performing wet granulation on the composite slurry to obtain spherical wet particle coarse product; and drying and activating the spherical wet particle coarse product to obtain a high-performance lithium-ion sieve particle adsorbent based on lattice engineering. The adsorbent of this invention has higher adsorption capacity, faster adsorption kinetics, better selectivity, and stronger cycle stability.

The invention discloses an integral phosphorus removal adsorbent based on a fibrous inorganic mineral material, a preparation method of the integral phosphorus removal adsorbent and application of the integral phosphorus removal adsorbent to removal of phosphorus in an aqueous solution. According to the invention, a fibrous inorganic mineral material with the size of more than centimeter level is used as a carrier, a non-noble metal salt is used as a precursor, non-noble metal hydroxide is formed through in-situ deposition, and the non-noble metal hydroxide is uniformly attached to the surface of the fibrous inorganic mineral material, so that the integral phosphorus removal adsorbent is directly obtained without further molding. The preparation process is simple, the material source is wide, the cost is low, and large-scale preparation is easy. The obtained adsorbing material can effectively remove trace phosphorus in water, has high phosphorus removal capacity and rapid adsorption kinetics, can realize an excellent treatment effect in a wide concentration and pH range, and can be recycled.

The application discloses a method and system for strengthening and modifying activated carbon adsorption of perfluorinated compounds by micro-bubbles, belonging to the technical field of water treatment. The application is to immerse activated carbon in a polydiallyldimethylammonium chloride aqueous solution, treat the immersed activated carbon to be neutral and dry to obtain modified activated carbon; raw water containing PFAS is treated by micro-bubbles, and then the modified activated carbon is added to the raw water for reaction, and the treated water is discharged from the upper layer. The application compensates for the insufficient adsorption of short-chain PFAS by traditional activated carbon through PDADMAC electrostatic adsorption, improves the removal effect by combining the enrichment effect of micro-bubbles; the mass transfer is strengthened by slight disturbance, the adsorption kinetics is accelerated, and the interference of natural organic matter can be resisted to protect the adsorption sites; the process condition is mild and safe, there is no secondary pollution, and the engineering popularization is convenient.

The invention relates to a sodium alginate-montmorillonite double-layer coated mango leaf biochar spherical adsorbent for lead ion adsorption and a preparation method and application thereof, and belongs to the technical field of environmental functional materials and water treatment. The preparation method comprises the following steps: adding montmorillonite into a disodium ethylene diamine tetraacetate solution to prepare a turbid liquid; mixing the turbid liquid with mango leaf powder, and sequentially standing and calcining to obtain a montmorillonite single-layer coated mango leaf biochar material; mixing the material with NaHCO3, and then adding a sodium alginate solution to form sodium alginate-charcoal composite gel; dropwise adding the composite gel into a solidification solution calcium chloride, and carrying out a cross-linking reaction to obtain small balls; and immersing the pellets into an ethanol solution for dehydration, and then washing the surface with HCl to obtain the sodium alginate-montmorillonite double-layer coated and assembled mango leaf biochar spherical adsorbent. The adsorbent shows high adsorption capacity (up to 234 mg / g), rapid adsorption kinetics and good mechanical stability on lead ions in wastewater, is easy to separate and recover, and has a wide application prospect in the field of heavy metal wastewater treatment.

The invention discloses a silicon carbide aerogel-based carbon dioxide adsorption material and a preparation method and application thereof.The method comprises the steps that specific tetraalkoxy siloxane and carbonizable organic matter are adopted for preparing wet gel, then surface hydrophobic treatment and drying treatment are conducted to prepare dry gel, then heat treatment is conducted to generate silicon carbide aerogel, and the silicon carbide aerogel-based carbon dioxide adsorption material is obtained. Loading an amine compound with relatively high molecular weight on the silicon carbide aerogel to prepare the silicon carbide aerogel-based carbon dioxide adsorption material; practice shows that the silicon carbide aerogel-based carbon dioxide adsorption material prepared by the method disclosed by the invention has the advantages of high CO2 adsorption capacity, ultrafast adsorption kinetics, excellent thermal stability, low regeneration energy consumption and the like; due to the comprehensive advantages, the material is very suitable for carbon dioxide capture scenes with strict requirements on adsorption efficiency, operation cost and long-term stability.

The invention discloses a tannic acid molybdenum coordination coated DNase nanocapsule as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. According to the preparation method, molybdenum and tannic acid are utilized to form an MPN nanocapsule, DNase II is carried, and the Mo-TA-coated DNase II nanocapsule is constructed; the positively charged metal phenolic network nanoparticle (MPN NPs) shell has remarkable advantages in the aspect of adsorbing circulating free DNA (cfDNA), the porous structure and rich surface functional groups provide high adsorption capacity and rapid adsorption kinetics, and the cfDNA can be efficiently captured. MPNs also has the characteristics of good biocompatibility, easy carrying and the like, and the MPNs has good PH responsiveness, so that DNase II can be accurately released in lysosome and effectively hydrolyzed in cells, the inflammatory reaction caused by cfDNA is blocked by using cfDNA, and meanwhile, the interburial effect of macrophages is recovered; mo and TA have oxidation-reduction ability, can effectively improve the stress state of cells and mitochondrial dysfunction, obviously inhibit the generation of cfDNA, and realize the full-period management from symptom treatment to root cause treatment.

This invention discloses a method and apparatus for optimizing the feeding frequency of particulate friction stir additive manufacturing. First, feeding experiments are conducted under different operating conditions to collect pressure and displacement data. A mechanism-empirical hybrid model of the dynamic coupling relationship between pressure, displacement, and feeding frequency is established. An uncertainty set is defined. A robust optimization model for the feeding frequency is established. The dual objective is transformed into a single objective through weighted summation. The inner worst-case scenario is solved. The outer optimization employs adsorption kinetics-enhanced gradient descent. This invention uses an improved gradient descent algorithm as the core optimizer, requiring only one calculation of the inner worst-case scenario and gradient per generation. The computational load is significantly less than that of population-based algorithms, making it suitable for embedding in real-time control systems for online optimization. Combined with adaptive learning rate, dynamic diffusion intensity, and desorption probability adjustment mechanisms, the algorithm achieves rapid convergence while maintaining global search capability, providing an efficient and feasible technical solution for online dynamic tuning of the feeding frequency.

The invention discloses an adaptive optimization method and system for the usage amount of a getter for aerospace helium purification, and relates to the technical field of gas separation and purification, and the method comprises the steps: obtaining multi-source data of a purification system; fusing the multi-source data; based on the fused data, predicting an outlet hydrogen concentration change trend of the third-stage chemical adsorption purifier in a future preset time period by utilizing a preset adsorption kinetic model and a getter capacity model; constructing an optimization problem taking the minimum getter dosage as an optimization target and taking the condition that the outlet hydrogen concentration does not exceed a set threshold value as a constraint condition, and solving to obtain the optimal getter dosage at the current moment based on a model prediction control algorithm; and calibrating and updating parameters of the adsorption kinetic model and / or the getter capacity model. The application can dynamically optimize the use amount of the getter, significantly reduce the consumption and operation cost, and improve the dehydrogenation stability and the system intelligence level.