82 results about "Molecular adsorption" patented technology

The invention discloses a zinc-bromine flow battery multifunctional negative electrode electrolyte and a preparation method thereof, and belongs to the technical field of electrochemical energy storage, and the method comprises the following steps: uniformly stirring and mixing a solvent, deionized water and a cosolvent, adding an electrolyte, stirring until the electrolyte is completely dissolved, then adding a supporting electrolyte and a negative electrode additive, stirring until the supporting electrolyte and the negative electrode additive are completely dissolved, and obtaining the zinc-bromine flow battery multifunctional negative electrode electrolyte. The multifunctional negative electrode electrolyte of the zinc-bromine flow battery is obtained; the negative electrode cosolvent is dimethylformamide; and the negative electrode additive is at least one of saponin and cinnamyl aldehyde. Saponin molecules are adsorbed on the surface of the zinc electrode, and electronegative carboxyl groups of the saponin molecules form an electrostatic repulsion net in an electric double layer, so that zinc ions are forced to be uniformly dispersed, local ion concentration hot spots are eliminated, and dendritic crystal nucleation is inhibited from the source. In cinnamyl aldehyde, the strong electronegativity of oxygen atoms and the electronegativity of aldehyde oxygen are far higher than those of hydrogen, so that electrons are strongly attracted, adjacent carbon atoms are positively charged, polar adsorption sites are formed, the hydrogen evolution reaction is effectively inhibited, and the stability and the cycle life of the battery are greatly improved.

The invention provides a storage system for immunofluorescence slide glass and an intelligent temperature and humidity coupling control method thereof. The system comprises a closed sample cabin, a controller, a passive buffer layer and other structures, and the temperature and humidity in the cabin can be stably controlled in a dynamic environment. The temperature and humidity in the cabin and the temperature of the key cold surface are monitored in real time through the sensing unit, the local dew point is calculated, and temperature and humidity control is executed. And the controller executes a layered gradient coupling control algorithm according to the dynamic dew point safety margin to ensure accurate control of temperature and humidity. The passive buffer layer is of a composite structure of a phase change material and a moisture absorption material, and the temperature and humidity are adjusted through solid-liquid phase change and molecular adsorption. The system can effectively improve the storage stability and safety of the immunofluorescence slide, and is suitable for sample storage management in industries such as life science and biological pharmacy.

The invention belongs to the field of antibiotic analysis and detection, and discloses a quinolone drug SERS (Surface Enhanced Raman Scattering) detection method based on an improved silver nano-substrate and a spectral angle matching model. An improved Lee-Meisel method is adopted to synthesize silver nano sol with precisely controlled particle size, molecular adsorption is realized by utilizing electrostatic interaction of a positively charged quinolone drug and negatively charged silver nano particles, and a high-density Raman enhanced hot spot is formed after an agglomeration agent is added; the SERS spectrum is collected at the excitation wavelength of 785 nm and the integral time of 10 s, qualitative distinguishing of drugs is achieved by combining a spectrum angle matching model, and quantitative detection is achieved by constructing a standard curve through the linear relation between the characteristic peak intensity and the drug concentration logarithm. The detection limit of the four drugs is as low as 1.03-1.16 ppb, the classification accuracy rate reaches 100%, the method is obviously superior to existing similar methods, the detection matrix range is wide, such as animal food and dairy products, and universality and high sensitivity are both considered.

The invention relates to the technical field of solar cells, in particular to a self-assembled monomolecular hole transport material, a preparation method and application thereof, a perovskite solar cell, a preparation method thereof and a photovoltaic module. The self-assembled monomolecular hole transport material provided by the invention has a structure as shown in a formula I. In the formula I, A1, A2 and A3 are respectively and independently anchor groups or hydrogen atoms; the anchoring groups are independently selected from phosphate groups respectively; g is selected from a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted acridinyl group, a substituted or unsubstituted phenothiazinyl group, and a substituted or unsubstituted phenoxazinyl group. The self-assembled monomolecular hole transport material provided by the invention has stronger anchoring binding capacity, conjugation in molecules is enhanced through the aromatic connection unit, and transport of carriers is facilitated; polyphosphonic acid anchoring in the self-assembled monomolecular hole transport material provided by the invention can enhance adsorption and uniformity of molecules, and a formed hole transport interface has better charge transport and defect passivation effects.

The invention discloses an aluminum alloy complex cavity diffusion welding method, which is characterized in that a uniform and compact organic molecule adsorption protection layer is formed on the surface of aluminum by completely immersing a cleaned blank in a diethylene glycol dimethyl ether solution for ultrasonic-assisted treatment. The protective film can effectively isolate air at normal temperature and prevent the oxidation film from regenerating; and in the initial stage of diffusion welding temperature rise, the aluminum alloy can be completely decomposed and volatilized, no impurity is left, and the high-activity clean aluminum surface is exposed. According to the method, diffusion welding is carried out under the conditions that the vacuum degree is high, the temperature is 500-560 DEG C and the pressure is 5-15 MPa in cooperation with a positioning tool system matched with the thermal expansion coefficient, aluminum atoms are fully diffused under the condition that no oxidation film hinders exist, and high-quality metallurgical bonding is formed. By means of the technical scheme, the problem that the welding rate is low due to an oxidation film on the surface of the aluminum alloy is successfully solved, meanwhile, the defects of ultrahigh vacuum equipment input and middle layer material introduction are overcome, and the manufacturing quality and production efficiency of complex aluminum alloy components are greatly improved.

This invention belongs to the field of SERS detection technology and relates to the application of an Ag / Bi4O5Br2 / Ni-Fe double hydroxide composite SERS substrate in the detection of CV in wastewater. First, a Bi4O5Br2 / Ni-Fe double hydroxide is prepared, and silver nanoparticles are loaded onto its surface using a liquid-phase chemical reduction method. This material combines the LSPR effect of silver nanoparticles with the interfacial coupling and multiple active sites of the Ni-Fe double hydroxide, enabling the regulation of interfacial charge transfer and enhancing molecular adsorption. Utilizing the excellent adsorption and enrichment properties of Bi4O5Br2, a highly efficient charge transport system is synergistically constructed from multiple components, improving the SERS chemical enhancement effect and amplifying the CV Raman signal. This invention overcomes the shortcomings of weak signals and insufficient stability of single substrates, achieving sensitive detection of trace CV in water. The substrate preparation process is simple, environmentally friendly, and highly practical, showing broad application prospects in the field of trace CV analysis in aquatic environments.

The invention relates to a surface-enhanced flexible Raman substrate, a surface-enhanced Raman sensor for nano-plastic trace detection and a preparation method of the surface-enhanced Raman sensor. The preparation method of the surface-enhanced flexible Raman substrate comprises the following steps: preparing a colloidal solution by taking BNCs, a CS solution and a HAuCl4 aqueous solution as raw materials; the preparation method specifically comprises the following steps: dispersing an aqueous solution of HAuCl4 into an aqueous solution of BNCs, adding pvp for physical mixing and stirring, and then adding ethanol to obtain a mixture; and irradiating the mixture with laser, washing with deionized water for three times to obtain a BNCs / AuNWs colloidal solution, dropwise adding a CS solution, stirring, and carrying out suction filtration on the colloidal solution to obtain the BNCs / AuNWs coated CS surface-enhanced Raman scattering substrate. The CS substrate enhances molecular adsorption, so that the adsorption rate of the nano-scale plastic particles is greatly improved, the gold nanoparticles generate an enhanced LSPR effect on the surface of the substrate, a Raman signal is improved by 60-63 times, and the detection efficiency is improved.

The molecular adsorbent according to the present application adsorbs a polar molecule, and contains, as an active ingredient, an ion exchanger having: an ion exchange resin containing an ion exchange group which is a strongly acidic group; and a metal ion or a complex of a metal ion which is ion-exchanged with the ion exchange group. The polar molecule contains a nitrogen atom having a lone pair of electrons. The metal ion is one or more of a metal ion of 3 valence or more, Co 2+ , Cu 2+ , Ni 2+ , Mn 2+ , V 2+ , Cs + , Rb + , and K + .

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 belongs to the technical field of zinc ion batteries, and provides an aqueous zinc ion battery electrolyte, a preparation method thereof and an aqueous zinc ion battery. The invention provides an aqueous zinc ion battery electrolyte. The aqueous zinc ion battery electrolyte comprises the following components: 1-2.5 mol / L of water-soluble zinc salt, 1-6g / L of an additive and water, the additive is 4, 7, 13, 21, 24-hexaoxa-1, 10-diazabicyclo [8, 8, 8] hexacodecane, and the pH value of the aqueous zinc ion battery electrolyte is less than or equal to 1. The additive is adsorbed on the surface of the zinc negative electrode prior to water molecules, and a thin and compact solid protective layer with good ionic conductivity and electronic insulation is generated in situ. The solid protective layer looks like a'raincoat 'for the zinc negative electrode to prevent the action of water molecules and the zinc negative electrode, and at the same time, the corrosion of hydrogen ions to the zinc negative electrode under strong acid conditions is shielded by tertiary amine ions formed by ionization of tertiary amine in the bridge crown ether.

The invention belongs to the technical field of material surface performance detection, and particularly relates to a method for detecting biological pollution resistance and durability of a silicone rubber surface, and the method comprises the following steps: S1, sequentially carrying out biological membrane inhibition rate quantitative detection, antibacterial adhesion detection, protein adsorption resistance test and surface wettability test on a silicone rubber sample to be detected; s2, carrying out durability treatment on the parallel sample; s3, repeating partial or all tests in the step S1 on the sample treated in the step S2; s4, comparing the performance data obtained in the step S1 and the performance data obtained in the step S3, and evaluating the biological pollution resistance and durability of the silicone rubber sample. According to the invention, biological membrane inhibition rate quantitative detection, anti-bacterial adhesion detection, anti-protein adsorption performance test, surface wettability analysis and durability test are organically combined to form a complete evaluation closed loop from molecular adsorption to microbial community and from immediate efficiency to long-acting stability, and all key links of biological pollution are comprehensively covered.

The invention relates to a sintered red clay coating solid-phase extraction fiber, a preparation method thereof and an application of the sintered red clay coating solid-phase extraction fiber in measuring the sensitivity of moisture in mineral oil, and belongs to the technical field of analytical chemistry. The invention aims to overcome the limitation of the existing solid-phase microextraction coating on the aspects of cost, mechanical strength, thermal stability and water molecule adsorption selectivity. The core of the preparation method comprises the following steps: drying red clay in the sun, sieving to obtain powder, mixing the powder with deionized water according to a mass ratio, and standing and kneading twice to form a mud pie; taking the mud pie, adding water, uniformly mixing, vertically inserting and pulling out a stainless steel wire for 2-4 times to form a uniform coating, drying in the shade, trimming, and calcining to obtain the fiber. According to the fiber, efficient and specific adsorption of water molecules is realized by utilizing a porous structure of the sintered red clay and retaining hydroxyl groups, and trace moisture in mineral oil such as gasoline and diesel oil is detected by combining a headspace extraction-GC / TCD (Gas Chromatography / Thermal Conductivity Detector) coupling technology.

The invention provides a preparation method of a mesoporous MOFs (Metal-Organic Frameworks) material with water-acid dual stability and application of the mesoporous MOFs material in high-value conversion of grease. The preparation method comprises the following steps: firstly, preparing a mesoporous MOFs material of which the average pore size is greater than 10nm by a lauryl sodium sulfate mediated soft template method, and then dissociating an outer layer by using sodium citrate to increase the outer specific surface area of the outer layer, so as to obtain the mesoporous MOFs material (Meso-MIL-88A) with water-acid dual stability. The adsorption isotherm of the Meso-MIL-88A accords with a Langmuir model, the adsorption of macromolecular lipase belongs to single-molecule adsorption, and the defect that the specific enzyme activity is reduced due to enzyme accumulation caused by the fact that a macroporous material serves as an enzyme immobilization carrier is fundamentally avoided. The Meso-MIL-88A can be used for efficiently immobilizing lipase and synthesizing structural phospholipids, and has a good application prospect in the field of lipase-mediated grease high-valued treatment.

The invention discloses a hydrated polymer adsorbent based on saponin embryo modification as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials. The adsorbent is a three-dimensional network structure material which is prepared by acylating and modifying saponin embryos through maleic anhydride, then carrying out graft copolymerization on the modified saponin embryos, diacetone acrylamide and glycidyl methacrylate, and carrying out crosslinking through N, N-dianilino tetrahydrofuran. The preparation method mainly comprises the following steps: firstly, carrying out acylation reaction on saponin seed embryo dispersion liquid and maleic anhydride under an alkaline condition to obtain acylated saponin seed embryos; then carrying out graft copolymerization with two functional monomers in a hydrogen peroxide-acetylacetone initiation system, and finally adding a cross-linking agent to complete a cross-linking reaction. The molecular chain of the prepared adsorbent is rich in various functional groups such as acylamino, carboxyl and epoxy group, and the adsorbent has efficient adsorption capacity on heavy metal ions and oil pollutants in water, and is large in adsorption capacity and good in stability.

The invention relates to the technical field of semiconductor manufacturing, in particular to a passivation method of an InAs or GaSb II type superlattice long-wave infrared detector, N2 plasma pretreatment inhibits regeneration of oxide layer Ga2O3, Sb2O3 and the like, and provides a clean interface for ODT molecular adsorption; the ODT is vulcanized to form a highly ordered and compact self-assembled monomolecular layer SAM, so that water and oxygen molecules in the air are effectively prevented from being in contact with the InAs / GaSb surface, and a foundation is laid for ALD deposition of high-quality Al2O3 or SiO2; aLD deposition of Al2O3 or SiO2 can form a compact and high-quality thin film, the interface state density is reduced, and effective passivation is carried out; the PECVD deposition of SiO2 provides firm mechanical protection and environmental isolation; according to the invention, various types of surface and interface defects can be handled, and more thorough suppression of surface leakage current is realized.

The invention relates to the technical field of perovskite solar cells, in particular to a perovskite solar cell hole transport layer treatment method, which comprises the following steps: firstly, irradiating a PTAA film by using ultraviolet light in an oxygen-containing environment, so that methyl on the surface of the PTAA film is oxidized into hydrophilic ester groups or carboxyl groups, and mild hydrophilic modification is realized; and then the modified PTAA layer is in contact with a diluted PEDOT: PSS aqueous solution to form an extremely thin oriented molecular adsorption interface modification layer. According to the invention, on the premise of not destroying the hole transport function of PTAA, the wettability of the perovskite precursor solution and PTAA is significantly improved, the defects of the active layer are reduced, and interface contact and energy level matching are optimized at the same time. According to the perovskite solar cell using the method, the photoelectric conversion efficiency and the preparation repeatability are remarkably improved, the contradiction between performance and stability caused by hydrophobicity of traditional PTAA is solved, the process is simple, and the method is suitable for industrial application.

The application discloses a kind of single-particle adsorption isotherm measurement system and method, the system includes: dark field optical imaging system, for the dark field image of sample particle is collected;Micro gas flow cell, for accommodating sample particle and controlling its atmosphere environment, the micro gas flow cell is equipped with gas inlet, gas outlet and optical transparent window;The optical transparent window is used for the light path of the dark field optical imaging system passes through;Temperature control system, for controlling the temperature of sample particle;Gas path control system, for adjusting the gas type and partial pressure that pass into the micro gas flow cell;Signal acquisition and processing system are connected with the dark field optical imaging system, for collecting dark field image and calculating the scattering light intensity change of the sample particle, to further construct adsorption isotherm.The application realizes the accurate characterization of molecular adsorption amount by real-time monitoring the optical scattering intensity change of single particle in adsorption process.

The invention relates to the field of alkane selective adsorbents, in particular to a methyl-modified metal organic framework material and preparation and application thereof.The methyl-modified metal organic framework material is prepared by dissolving cobalt nitrate hexahydrate, alpha, beta-bis (4-pyridyl) ethylene glycol and 2, 5-dimethyl terephthalic acid in an organic solvent, then transferring a mixed system into a reaction kettle, conducting heating reaction, filtering and washing, and conducting drying and roasting to obtain the methyl-modified metal organic framework material. And activating the crystal in dynamic vacuum under a heating condition to remove the organic solvent in crystal pore channels, thereby obtaining the methyl modified metal organic framework material. According to the method, two methyl functional groups are introduced to the ligand of MOFs, so that the selectivity of CH4 / N2, C3H8 / C3H6 and C2H6 / C2H4 is synchronously and effectively improved, and effective separation of light hydrocarbons is realized. The synthesized compound provides a proper pore diameter and pore channel chemical environment for adsorption separation of gas molecules, and provides a new idea for separation of light hydrocarbons.

This invention relates to the field of bentonite preparation technology, and in particular to an organically modified bentonite and its preparation method, comprising the following steps: (a) pretreatment of natural bentonite by sulfuric acid acidification and whitening; (b) sodium carbonate sodiumization to obtain sodium-based bentonite; (c) dispersion of sodium-based bentonite in anhydrous ethanol, addition of 3-aminopropyltriethoxysilane (APTES) and polyethylene glycol diacrylate (PEGDA), and reflux reaction at pH=4.0 to achieve silanization intercalation; (d) addition of 5% template agent, and hydrothermal construction of mesoporous-macroporous hierarchical channels at 120℃; (e) elution of template agent with ethanol / water mixed solvent, and drying and pulverizing to obtain the finished product. This method overcomes the defects of traditional bentonite in low mass transfer efficiency and insufficient macromolecular adsorption capacity, and can increase the adsorption capacity for organic pollutants by more than 40%, while enhancing the structural stability under high temperature and acidic environments.

The invention relates to the technical field of indoor environment regulation and control equipment, and discloses a smart home indoor environment regulation and control device based on a six-constant system, which comprises an external machine body and a fan main body mounted on the outer wall of the external machine body, and an air treatment box is mounted in the external machine body; a dehumidification rotating wheel assembly and a heating main body are rotationally arranged in the air treatment box, a gravity drainage structure depended on by traditional condensation dehumidification is replaced, the internal layout of the device is greatly simplified, and the design and installation difficulty is reduced; water vapor in air is quickly captured through the capillary action and molecular adsorption force of the material surface, the regeneration sector enables the adsorbed water vapor to be vaporized and then discharged through the exhaust main body by means of hot air flow generated by the heating main body, and the risk of condensate water leakage is completely eradicated from the source. Meanwhile, the dehumidification process of the treatment sector and the regeneration process of the regeneration sector are synchronously carried out on the same rotating wheel through the coaxial rotating design, the airflow path loss is reduced, and the indoor humidity regulation and control efficiency is improved.

The present invention relates to a flow cell for electrically controllable ad- and desorption of molecules from and into a liquid. Particularly, the present invention relates to a flow cell comprising a chamber comprising an inlet and an outlet which define therebetween a fluid path for the liquid and a volume for containing the liquid provided along said fluid path, the volume comprising a device comprising (a)two electrodes comprising a conductive surface, (b) a stationary phase between said two electrodes, wherein said stationary phase is not in direct contact with said electrodes, (c) a controller functionally associated with a power supply configured for applying and changing a voltage between said electrodes, wherein changing the voltage between said electrodes changes the affinity of molecules so as to adsorb said molecules to said stationary phase or desorb molecules from said stationary phase when said molecules are adsorbed to said stationary phase.

This invention belongs to the field of radiation source pulse sorting technology, specifically relating to a radiation source pulse sorting method, program, device, and storage medium. This invention models the determination process of the neighborhood radius and minimum number of neighborhood points for DBSCAN clustering in the pre-sorting of radiation source pulses as a multi-objective optimization problem, designs a multi-objective hoarfrost ice crystal optimization algorithm, and introduces multiple clustering performance indicators as optimization objectives under a unified evaluation framework to jointly constrain multiple structural performance aspects of the pre-sorting results. Simultaneously, an ice crystal subpopulation structure is introduced into the hoarfrost algorithm, integrating water molecule adsorption and soft frost search mechanisms, enabling the parameter search process to maintain both global search capability and good local search capability, ensuring the basic consistency of the pulse sequence structure in the pre-sorting results. This provides reliable input for the subsequent main sorting of each radiation source pulse sequence, reducing the problem of mis-batch sorting in radiation source pulses.

This invention discloses a high-porosity alumina material and its preparation method, comprising the following steps: Step 1: Mixing a certain amount of gibbsite, aluminum nitrate, and NH4F uniformly; Step 2: Adding carbon fiber, petroleum coke, and paraffin wax to the mixture in Step 1, followed by pressing into tablets and high-temperature calcination to obtain the alumina material. This invention proposes a method for preparing ultra-high-porosity alumina materials based on carbon fiber, petroleum coke, and pseudoboehmite through a tablet pressing and high-temperature calcination process. This method fully utilizes the decomposition characteristics of pore-forming agents during calcination and the regulatory effect of chemical modifiers on pore structure, significantly improving the porosity and pore size distribution of the support, while optimizing mechanical strength and chemical stability. This invention features a simple process, controllable cost, and ease of industrialization, providing a high-performance alumina support for efficient catalytic reactions, macromolecular adsorption and separation, and energy conversion, exhibiting significant technical advantages and application value.

The application provides preparation, screening and application of two-dimensional red phosphorus nanosheets. The two-dimensional red phosphorus nanosheets are layered materials with a size of 600-800 nm. Blocky commercial red phosphorus is derived into two-dimensional red phosphorus nanosheets with a large surface area by simple hydrothermal treatment and ice bath ultrasonic method, the molecular adsorption capacity is improved, and the SERS signal is also improved. Then, by changing the ultrasonic time, the size of the two-dimensional red phosphorus nanosheets adjusts the visible light absorption range and the band gap, and the red phosphorus nanosheets with the strongest SERS signal are screened by Raman characterization means. The two-dimensional red phosphorus nanosheets have stable properties, low cost and application prospect in biomedicine.

This invention relates to the field of natural material emulsification and discloses a natural material emulsification process for processing personal care products. The process includes: injecting a dispersed aqueous phase of tea saponin and soybean lecithin into the oil phase at a gradually decreasing pump flow rate at a temperature ranging from 30°C to 42°C, while simultaneously increasing the stirring speed; applying an ultrasonic pulse after the oil phase injection is complete; lowering the stirring speed to stabilize the interfacial film; and reducing the temperature in two stages. This invention matches the interfacial expansion rate with the molecular adsorption rate to eliminate localized oil phase overload, resulting in a uniform monodisperse state of the droplets. Simultaneously, it avoids the peeling and damage of the interfacial film by continuous strong shear fields, locks the lattice arrangement of hydrophobic hydrocarbon segments in the interfacial film, and forms a three-dimensional steric network, thereby increasing the interfacial yield stress, enhancing long-term thermodynamic stability, and suppressing stratification and phase coalescence during long-term storage.

The application provides a preparation method and application of a lubricating oil friction-reducing agent, and a structural formula is as follows: the lubricating oil friction-reducing agent is an organic friction modifier, N-isopropyl acrylamide and oleylamine are used as reaction substrates, stirring reaction is carried out at 80 DEG C for 48 h, and a product is obtained. Nitrogen atoms and oxygen atoms in the molecular structure of the friction-reducing agent have lone pair electrons, can form ordered molecular adsorption films on the surface of metal, reduce the friction of the surface of a metal friction pair, and have excellent friction-reducing performance in base oil.

The invention relates to a Ti3C2Tx / Fe2O3 / CNTs humidity-sensitive material and a preparation method thereof, Ti3C2Tx is used as a template, through hydrothermal reaction with FeCl3, Fe2P3 is generated and is self-assembled to the surface of Ti3C2Tx, a Ti3C2Tx / Fe2P3 material is finally formed, the Ti3C2Tx / Fe2P3 material and a uniform aqueous dispersion of carbon nanotubes ( / CNTs) are fully mixed, the materials are assembled together through Van der Waals force, and the Ti3C2Tx / Fe2O3 / CNTs composite material is obtained. Ti3C2Tx has abundant surface properties and excellent structural stability, an ideal platform is provided for generation of Fe2O3 nanoparticles, and CNTs are connected with all Ti3C2Tx / Fe2P3 lamellar structures to form a continuous and stable conductive network. A network structure formed by connecting the CNTs is like an electron transmission'highway ', so that the overall resistance change of the material caused by water molecule adsorption / desorption can be extremely sensitively transmitted out, and the signal response of the sensor is amplified. According to the preparation method, the humidity sensitive material with high sensitivity and excellent responsiveness can be obtained, the preparation process is simple, and the humidity sensitive material can be practically applied to the fields of industry, environmental monitoring, medical treatment and the like.

This invention discloses a cyclononenyl bicovalent macroporous covalent organic framework and its preparation method. The framework contains both C-C and B-O covalent bonds, exhibiting a ring-shaped macroporous structure. The preparation method involves mixing 10,15-dihydro-5H-tribenzo[a,d,g][9]cyclononen-2,3,7,8,12,13-hexanol with a diboronic acid monomer at a molar ratio of 3:2, dissolving the mixture in a mixed solvent of mesitylene and dioxane, reacting at 90°C under nitrogen protection, and obtaining the target product after filtration, washing, and drying. The diboronic acid monomer is 1,4-phenylenediboric acid or 4,4''-biphenylenediboric acid. This material has the characteristics of good thermal stability, ideal specific surface area and pore size greater than 2nm. It exhibits excellent adsorption capacity and selectivity for CO2, low-carbon alkanes, acetylene and other substances. It can be used in the separation of low-carbon alkanes, adsorption of dye macromolecules, photoelectrocatalytic carriers and other fields. Moreover, no external transition metal catalyst is required in the synthesis process, which makes it low-cost and environmentally friendly.

The invention discloses an inorganic oxide positive electrode material, a preparation method and application. The positive electrode material comprises an inorganic oxide main body material and a polymer adsorption layer, the inorganic oxide main body material is an oxide with a layered structure, and the macromolecular adsorption layer is combined on the surface of the inorganic oxide main body material through hydrogen-bond interaction formed between a hydrophilic functional group and a metal-oxygen bond on the surface of the inorganic oxide main body material. The polymer adsorption layer is firmly combined on the surface of the oxide through multi-point anchoring, so that material dissolution and structure collapse are effectively inhibited, and interface ion transmission is regulated and controlled at the same time. The positive electrode material provided by the invention is stable in structure, excellent in cycle performance and rate capability, simple in preparation method and suitable for being applied to the water-based energy storage battery.

The invention relates to the technical field of pig farm monitoring systems and methods based on intelligent sensors, and particularly discloses a pig farm monitoring system and method based on intelligent sensors. The system comprises an environment sensing module, a data processing and compensation module, a control decision module and an execution mechanism module. According to the method, the multivariable compensation model fusing the temperature, the humidity and the air pressure is constructed and applied to dynamically correct the output signal of the electrochemical ammonia gas sensor in real time, so that systematic measurement drift caused by a water molecule adsorption effect caused by a high-humidity environment is fundamentally stripped. By means of the technical measure, the system can obtain the ammonia gas concentration value highly close to the real situation, an accurate and reliable data basis is provided for subsequent environment regulation and control decisions, and equipment misoperation caused by sensor misinformation is avoided.