132 results about "Molecular adsorption" patented technology

The invention belongs to the technical field of zinc battery electrolyte, and discloses application of pyridine hydrochloride as an electrolyte additive in stabilizing a zinc negative electrode and realizing four-electron transfer of a zinc-iodine secondary battery. The hydrochloride containing the pyridine structure is used as an electrolyte additive, molecules of the pyridine structure are adsorbed on the surface of the zinc negative electrode to form a shielding layer, the deposition / stripping reversibility of the zinc negative electrode is improved, stabilization of the zinc negative electrode can be achieved, and the problems of zinc dendritic crystal, corrosion and hydrogen evolution are solved. Meanwhile, molecules with pyridine structures can activate and stabilize I- / I0 / I < + > four-electron redox reaction, inhibit I < + > hydrolysis side reaction and improve the energy density and cycling stability of the zinc-iodine battery. The problem of poor electrochemical deposition / stripping reversibility of a zinc negative electrode and the problem of poor stability of positive valence I < + > species of an iodine positive electrode of a four-electron transfer reaction are solved. The electrolyte containing the additive is low in cost, simple in method, easy to produce and high in practical value.

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 high-molecular adsorption material with high selectivity on platinum group metals as well as a preparation method and application of the high-molecular adsorption material, and belongs to the technical field of material science. Comprising the following steps: (1) preparing a methanol solution containing platinum group metal ions, and adding a functional monomer mixture and modified graphene oxide to form a pre-assembled compound; (2) adding a cross-linking agent and an initiator, removing oxygen, and polymerizing to obtain a polymer; and (3) grinding the polymer, eluting metal ions, washing to be neutral, and drying. The high-molecular adsorption material provided by the invention takes modified graphene oxide as a support body, template molecules and specific functional monomers (4-vinylpyridine and 2-mercaptobenzimidazole) are combined to form a pre-assembled compound, then a cross-linking agent and an initiator are added, recognition sites are fixed through cross-linking polymerization, and finally, the high-molecular adsorption material is obtained after the template molecules are eluted. The adsorbent is high in adsorption rate, capable of specifically adsorbing platinum group metal, good in stability and reproducibility and capable of being repeatedly used.

The invention relates to the field of cavity ring-down, in particular to a cavity ring-down spectrum detection system and method, and the system comprises a detection unit, a gas path system, a constant temperature control unit and a control and processing unit. The gas path system can be used for filling inert protective gas into the ring-down cavity and maintaining a micro-positive pressure state in a non-measurement period of the detection system, so that external pollutants and water vapor are effectively prevented from invading, and lens pollution and internal adsorption are reduced; the constant-temperature control unit is used for carrying out overall temperature control on the ring-down cavity and the gas path system and inhibiting signal drift caused by water molecule adsorption / desorption; and the gas path system adopts a low-adsorption material, a dead-cavity-free structure and a low-leakage sealing joint, so that the memory effect and the leakage risk are further reduced. The invention also provides a corresponding detection method which comprises the steps of micro-positive pressure maintenance, constant temperature control, strong purification, sample measurement and the like. According to the system and the method, the measurement precision and the stability are remarkably improved, the maintenance frequency and the startup purging time are reduced, and the maintenance requirement is reduced.

The invention belongs to the field of microorganisms, and particularly relates to a biochar-based immobilized microbial agent for promoting litter decomposition and a preparation method thereof.The biochar-based immobilized microbial agent for promoting litter decomposition comprises a biochar-based culture medium and a microbial seed solution, the active ingredient of the microbial seed solution is phanerochaete chrysosporium, and the preservation number is SHBCC D13411. According to the invention, the adsorption efficiency of the microbial agent is enhanced through the iron-modified biochar, and a habitat suitable for development and reproduction is provided for microorganisms; on the other hand, the biochar has very strong hygroscopicity, water molecules can be adsorbed on the surface, and a suitable growth environment is provided for microorganisms, so that the microorganisms are promoted to decompose litters.

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 discloses a wide-detection-range and high-resolution electrochemical humidity sensor based on ionic liquid and a preparation method thereof, and belongs to the technical field of humidity sensitive elements and humidity sensors. The electrochemical humidity sensor comprises a substrate as well as a humidity sensitive layer and an electrode which are arranged on the substrate, the humidity sensitive layer is made of ionic liquid, and the electrode is made of electrode materials with different activities. According to the electrochemical humidity sensor, the ionic liquid has good water molecule adsorption and ionic conductivity characteristics, the adsorbed water molecules can be dissociated to form H < + >, the ionic liquid can also be dissociated to form positive ions and negative ions to participate in conduction after adsorbing the water molecules, and the humidity sensitivity of the electrochemical humidity sensor is improved through synergistic ionic conduction; a wide humidity detection range (0-100% RH), a low humidity detection lower limit (as low as 1% RH) and a high detection resolution (1% RH) are realized.

The invention relates to the technical field of bentonite preparation, in particular to organic modified bentonite and a preparation method thereof.The preparation method comprises the following steps that (a) natural bentonite is subjected to acidification whitening pretreatment through sulfuric acid; (b) sodium carbonate is subjected to sodium modification and transformation to obtain sodium bentonite; (c) dispersing sodium bentonite in absolute ethyl alcohol, adding 3-aminopropyltriethoxysilane (APTES) and polyethylene glycol diacrylate (PEGDA), and performing reflux reaction under the condition that the pH is 4.0 to realize silanization intercalation; (d) adding 5% of a template agent, and carrying out hydrothermal construction at 120 DEG C to form a mesoporous-macroporous hierarchical pore channel; and (e) eluting the template agent by using an ethanol / water mixed solvent, drying and crushing to obtain a finished product. According to the method, the defects that traditional bentonite is low in mass transfer efficiency and insufficient in macromolecule adsorption capacity are overcome, the adsorption capacity of organic pollutants can be improved by 40% or above, and meanwhile the structural stability in the high-temperature and acid environment is enhanced.

The invention discloses an air-stable sulfide solid electrolyte as well as a preparation method and application thereof, and relates to the technical field of solid-state lithium batteries. The chemical formula of the sulfide solid electrolyte is Li < 5.4 > P < 1-x > S < 4.4 > M < x > Cl < 1.6-y > X < y >, x is greater than 0 and less than 0.08, y is greater than 0 and less than 1, and M is selected from at least one of Fe, Zn, Ge, Zr, Sn, Ca, Mg, Ti or Ag; x is selected from at least one of F, Cl, Br and I. According to the sulfide solid electrolyte disclosed by the invention, through double-element doping of metal elements and halogen, the surface energy of a material is reduced, water molecule adsorption is inhibited, meanwhile, the ionic conductivity of the sulfide solid electrolyte can be obviously improved, and the conductivity of the sulfide solid electrolyte is not obviously attenuated in a high-humidity environment.

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 adsorbents, and provides an efficient molecular sieve adsorbent for adsorbing carbon dioxide and a preparation method of the efficient molecular sieve adsorbent aiming at the problem that a traditional Na-type 13X molecular sieve is poor in CO2 adsorption performance under low partial pressure. The adsorbent is prepared by using a template agent, aluminum hydroxide, nano aluminum oxide and silica sol as raw materials through the steps of crystallization, calcination and the like. The template agent is a functional molecule integrating a phosphonic acid group, long-chain alkyl and polyethylene glycol dicarboxylic acid, the phosphonic acid group stabilizes a skeleton, the long-chain alkyl provides a graphene-like layer to inhibit water molecule adsorption, and the polyethylene glycol dicarboxylic acid guides micropores to grow orderly and cooperate with each other to form the efficient molecular sieve adsorbent for carbon dioxide adsorption. The CO2 adsorption capacity, the dynamic adsorption rate and the moisture resistance of the adsorbent under low partial pressure are improved.

The invention provides a composite electrolyte for a secondary metal battery as well as a preparation method and application of the composite electrolyte. The preparation method comprises the following steps: firstly, adding soluble zinc salt into deionized water to prepare an aqueous zinc salt electrolyte, gradually adding the amino acid additive after the pH value of the aqueous zinc salt electrolyte is stable, continuously stirring until the amino acid additive is completely dissolved, and standing to obtain the aqueous composite electrolyte containing the amino acid additive. Ammonium radicals of amino acids exist in the form of-NH4 or-NH3 +, and carboxyl exists in the form of-COOH or-COO-; the-NH3 < + > can be electrostatically adsorbed on the surface of the zinc negative electrode to change an electric double layer structure and prevent free water molecules from being adsorbed and electrolyzed, and the-NH4, the-COOH and the-COO <-> can change a hydrated zinc ion solvation structure and reduce the number of coordination numbers and active water molecules released in a desolvation process; the composite electrolyte is far better than an existing composite electrolyte obtained by using an amino acid additive, and the performance of a secondary zinc metal battery is effectively improved.

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 present invention relates to a method for preparing silicon monoxide nanopowder, and belongs to the technical field of non-metallic powder material preparation. The present invention uses SiO2 aerogel powder with a three-dimensional continuous structure surface as raw material, adsorbs hydrogen molecules on the surface of the powdered SiO2 aerogel, and axially feeds an argon-excited inductively coupled plasma torch. The hydrogen molecules are excited by the argon plasma torch to form a highly active hydrogen-rich plasma, which undergoes a reduction reaction with the SiO2 aerogel powder having the characteristics of high specific surface area and high porosity. The generated silicon monoxide vapor is quenched by argon downstream of the reaction device to obtain highly dispersible silicon monoxide nanopowder. This method overcomes the defects of the traditional solid-solid reaction method for preparing silicon monoxide, which has a slow reaction rate and low raw material conversion rate, and at the same time solves the safety problems existing in the traditional method of producing silicon monoxide by hydrogen reduction, thereby greatly improving production efficiency and safety.

The present application relates to the technical field of IPDI synthesis, and particularly discloses a method for removing residual n-butanol in tail gas in a process for synthesizing isophorone diaminon-butyl carbamate by using a urea method, wherein the tail gas is obtained from: ammonia-containing tail gas obtained in the process for synthesizing isophorone diaminon-butyl carbamate by using the urea method, and tail gas obtained after an ammonium carbamate removal process; and the method for removing the residual n-butanol in the tail gas comprises the following steps: cooling the tail gas to 15-25 DEG C, and then adsorbing the n-butanol in the tail gas by using an adsorbent; and the adsorbent comprises molecular sieves, activated carbon and nano-polymer adsorption resin. By using the method, the content of n-butanol in the tail gas of isophorone diaminon-butyl carbamate is far lower than the industrial emission standard, no secondary pollution is caused, and the system safety is high.

The invention discloses a method for improving the room-temperature gas-sensitive property of a metal oxide semiconductor sensitive material, which comprises the following steps of: uniformly placing the metal oxide semiconductor sensitive material on a pressing plate of a rotary shearing machine, and then applying pressure to the metal oxide semiconductor sensitive material until the target pressure is reached; and then directly standing or standing after high-pressure torsion, and finally relieving the pressure to obtain the metal oxide semiconductor sensitive material after high-pressure treatment or high-pressure shearing treatment. The high-pressure torsion is to rotate a side chopping board and apply different shear revolutions to the metal oxide semiconductor sensitive material. The sensitive material rich in crystal defects and bulk strain is successfully prepared through a high-pressure technology or a high-pressure torsion technology, more active sites are provided for gas molecule adsorption and reaction, crystal field distortion is induced to change the electronic structure of the material, and therefore the response performance of the sensitive material to specific gas is improved, and the sensitivity of the sensitive material to the specific gas is improved. And the gas-sensitive material has excellent gas-sensitive selectivity in various gas tests.

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 discloses an MAPO-17 molecular sieve as well as a preparation method and application thereof. M in the molecular sieve is at least one of Co, Mg, Ni and Zn; in Fourier transform infrared characterization before and after CO adsorption, the surface OH stretching vibration peak of the MAPO-17 molecular sieve has an obvious red shift phenomenon before and after CO molecular adsorption, and the red shift range is 280-350 cm <-1 >. When the MAPO-17 molecular sieve provided by the invention is used for industrial production of methanol downstream products and industrial production of synthesis gas downstream products, the MAPO-17 molecular sieve has relatively high activity and stability, a relatively good technical effect is achieved, and the problems of high MTO reaction energy consumption and low conversion rate and low light olefin yield when the reaction temperature is relatively low in the prior art are particularly solved.

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 discloses a preparation method and application of a metal-organic dye adsorbent based on sulfonyl calixarene, Ni (II) is used as a metal node, and the metal-organic dye adsorbent is prepared through a solvothermal directional assembly strategy by utilizing the synergistic coordination effect of a dicarboxylic acid ligand 4, 4 '-dithiobisbenzoic acid and p-tert-butylsulfonyl calix [4] arene (H4TBSC). The sulfonyl calixarene-based structure metal-organic dye adsorbent with definite inner and outer cavity partitions is successfully constructed. The adsorption material comprises a central large cavity and two symmetrically distributed peripheral cavities, and the special structure enables the adsorption material to show excellent selective adsorption performance on Congo red (CR) dye molecules. And efficient separation of a Congo red / rhodamine B (RhB) mixed system can be realized through a molecular size screening effect. The invention provides a new thought and method for developing a multifunctional supramolecular adsorption material based on dynamic coordination engineering, and has a wide application prospect in the fields of dye separation and wastewater treatment.

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 provides a cleaning solution for a semiconductor chip after chemical mechanical polishing, and a preparation method and application thereof, the cleaning solution for the semiconductor chip after chemical mechanical polishing comprises the following components by mass: 5-20 parts of a strong base; 5-30 parts of a weak base; 0.5-3 parts of a cellulose derivative; 0.5 to 2 parts of a chitin derivative; and 70-95 parts of ultrapure water. The cellulose derivative is one or more of 2, 5-furandicarboxylic acid, levulinic acid and 5-aminolevulinic acid. The chitin derivative is one or more of chitosan oligosaccharide, carboxymethyl chitosan, N-acetyl glucose, glucosamine and carboxymethyl glucosamine. According to the cleaning solution for the semiconductor chip after chemical mechanical polishing, CuO generated on the surface of copper after CMP can be effectively removed, a monomolecular adsorption layer is generated on the surface of Cu, and reoxidation of the surface of Cu is effectively inhibited within waiting time, so that Vbd is prevented from being reduced, and the reliability of a gate oxide layer of an MOS (Metal Oxide Semiconductor) device is improved.