91 results about "Bifunctional" patented technology

The application discloses a bifunctional HMGR mutant, which is obtained by replacing aspartic acid at the 154th amino acid of the amino acid sequence of natural HMGR with other amino acids. The application also discloses a nucleotide sequence and an amino acid sequence. The application further discloses a preparation method and application of the bifunctional HMGR mutant. The HMGR mutant of the application has high activity to both NADP(H) and NAD(H) substrates, and has significantly improved catalytic activity in a certain pH range.

Embodiments of the disclosure relate to methods of selectively depositing a metal after use of a flowable polymer to protect a substrate surface within a feature. A first metal layer is deposited by physical vapor deposition (PVD). The semiconductor substrate surface is exposed to one or more monomers to form a flowable and flexible polymer film on the first metal layer within the at least one feature. The flowable polymer film forms on the first metal layer on the bottom. The one or more monomers are selected from one or more of amines with bi-functional groups, aldehydes with bi-functional groups, cyanates with bi-functional groups, ketones with bi-functional groups, and alcohols with bi-functional groups. At least a portion of the first metal layer is selectively removed from the top surface and the at least one sidewall. The flowable polymer film is removed.

This invention provides a thiourea-tertiary amine bifunctional chitosan microsphere and its preparation method, belonging to the field of adsorption material technology. Through a stepwise functionalization and sequential crosslinking method, thiourea groups are first introduced onto the chitosan microspheres, followed by the introduction of tertiary amine groups and secondary crosslinking, successfully preparing chitosan microspheres possessing both thiourea and tertiary amine bifunctional groups. The thiourea and tertiary amine groups in the microspheres of this invention exhibit a synergistic adsorption effect on noble metal chloride anions, significantly improving the selective adsorption capacity and adsorption rate for noble metals such as palladium, platinum, and rhodium. Simultaneously, the dense three-dimensional network structure constructed through stepwise crosslinking greatly enhances the chemical stability and mechanical strength of the microspheres under strongly acidic environments, extending their service life. This preparation method is simple, mild, and environmentally friendly. The prepared adsorbent is particularly suitable for the efficient and selective recovery of noble metals from complex acidic wastewater or electronic waste leachates.

The invention discloses an oxygen-doped carbon nanofiber bifunctional electrocatalytic oxidation film and a preparation method and application thereof. The atomic ratio of nitrogen atoms to oxygen atoms in the oxygen-doped carbon nanofiber bifunctional electrocatalytic oxidation film is 11: (6-15). The catalytic performance of the electrocatalytic oxidation film can be improved by controlling the atomic ratio of nitrogen atoms to oxygen atoms in the oxygen-doped carbon nanofiber bifunctional electrocatalytic oxidation film, and then the catalytic efficiency of the electrocatalytic oxidation film is improved.

The invention provides a preparation method of a novel chiral thiourea / phosphine bifunctional organic catalyst with a cis-cyclic 1, 2-phosphinamine skeleton and application of the novel chiral thiourea / phosphine bifunctional organic catalyst in an asymmetric catalytic reaction. The chiral organic catalyst is prepared by taking cis chiral 2-(diphenylphosphine)-1, 2, 3, 4-tetrahydro-1-naphthylamine and an isothiocyanate compound as raw materials through a one-step reaction under a mild condition. The chiral thiourea / phosphine bifunctional organic catalyst is simple to prepare and stable in property, and shows excellent catalytic activity and stereoselectivity in an asymmetric hydrosilylation reaction of o-amido benzophenone.

The invention discloses a double-function (p) ppGpp synthetase or hydrolase mutant, a biological material and application of the double-function (p) ppGpp synthetase or hydrolase mutant to preparation of L-threonine, and belongs to the technical field of gene engineering. The technical problem to be solved by the invention is how to improve the yield of L-threonine. Relative to a wild type, the bifunctional (p) ppGpp synthetase or hydrolase mutant comprises one or more of the following mutations: K1) mutation of 174th amino acid of SEQ ID NO: 2 into cysteine, K2) mutation of 529th amino acid of SEQ ID NO: 2 into phenylalanine, and K3) insertion of histidine and aspartic acid between 84th amino acid and 85th amino acid of SEQ ID NO: 2. The bifunctional (p) ppGpp synthetase or hydrolase mutant provided by the invention can be used for improving the yield of L-threonine of Escherichia coli.

Acylated benzene sulfonated compounds with dual functionality can have the following structure:wherein each R is independently hydrogen or a C1 to C11 alkyl, each X is independently an alkali metal ion, an alkaline earth metal ion, and / or a quaternary ammonium cation, n is 1 to 3, and m is 1 to 2, with the proviso that when m is 2, the —OC(O)R groups are not located in an ortho configuration at positions 1 and 2 of the benzene ring. Cleaning compositions including the acylated benzene sulfonated compound are also disclosed.

The invention provides a difunctional electrocatalyst prepared by using Joule heat and a preparation method and application thereof, and belongs to the technical field of new energy materials. The preparation method comprises the following steps: synthesizing an organic framework compound by adopting dimethyl imidazole, zinc nitrate and transition metal salt of cobalt (Co), then pyrolyzing to prepare a cobalt-nitrogen-doped carbon material with oxygen reduction (ORR) activity, mixing the cobalt-nitrogen-doped carbon material with a nickel compound and an iron compound respectively, and preparing the cobalt-nitrogen-doped carbon material. Nickel and iron compounds are reduced into alloy nanoparticles in an extremely short time by using Joule heat, and the alloy nanoparticles are directly loaded on the surface of a cobalt-nitrogen-doped carbon material to obtain a high-performance dual-function (ORR and OER) electrocatalyst which can be used as a cathode catalyst to be applied to a metal-air battery.

The invention discloses a preparation method and application of an acid-base bifunctional magnesium-aluminum bimetallic oxide catalyst, and relates to the technical field of biomass catalytic conversion and heterogeneous catalytic materials.The preparation method comprises the steps that firstly, magnesium nitrate hexahydrate and aluminum nitrate nonahydrate are dissolved into a metal salt mixed solution; dropwise adding a sodium hydroxide aqueous solution into the metal salt mixed solution to obtain a turbid solution; heating and crystallizing in a water bath, transferring into a reaction kettle, and putting into a drying oven for hydrothermal crystallization. The method comprises the following steps: synthesizing a hydrotalcite-like precursor through a coprecipitation-hydrothermal coupling method, and carrying out high-temperature roasting to obtain the acid-base bifunctional composite metal oxide. The acid-base bifunctional composite metal oxide has the beneficial effects that the acid-base bifunctional composite metal oxide has a layered structure and a high specific surface area and is suitable for a biomass pyrolysis-catalytic reforming process, an alkaline site of the acid-base bifunctional composite metal oxide promotes a deoxidation reaction, an acidic site of the acid-base bifunctional composite metal oxide promotes an aromatization reaction, and the acid-base bifunctional composite metal oxide can effectively regulate and control the composition of biomass pyrolysis volatile components; the content of oxygen-containing compounds is obviously reduced, and the selectivity of monocyclic aromatic hydrocarbon is improved.

The invention belongs to the field of high polymer materials, and relates to a high-performance layer structure PVC door curtain and a preparation method thereof. According to the door curtain, modified polyvinyl chloride resin is used as a matrix, and a polar gradient layered structure is formed by molecular chains through fluorine-silicon bifunctional group synergistic grafting modification; meanwhile, small organic molecule 2-vinyl-4-hydroxyacetophenone is introduced as a reinforcing agent, and a stable network is formed between layers through pi-pi accumulation and hydrogen-bond interaction. The door curtain is prepared from modified polyvinyl chloride resin, 2-vinyl-4-hydroxyacetophenone, epoxidized soybean oil, dioctyl phthalate and an auxiliary agent through blending granulation and three-layer co-extrusion molding. The structure effectively improves the interfacial compatibility and molecular arrangement uniformity, so that the material has high transparency, excellent flexibility and strong interface bonding force at the same time. The light transmittance of the prepared door curtain reaches 93% or above, the door curtain still keeps flexibility at 40 DEG C, the peel strength is high, the ultraviolet aging resistance is remarkably superior to that of a traditional PVC product, and the comprehensive performance is excellent.

The present invention relates to the technical field of pollutant treatment, in particular to an amine-fluorine bifunctional hydrogel adsorbent, and preparation and use thereof. The present invention provides a preparation method of an amine-fluorine bifunctional hydrogel adsorbent, which comprises the following steps: uniformly mixing a fluorine-containing alkene monomer, a quaternary ammonium salt alkene monomer, a traditional Chinese medicine residue cellulose dispersion liquid, N,N′-methylene bisacrylamide and ammonium persulfate, and sequentially carrying out heating reaction, deionized water swelling and drying to obtain the amine-fluorine bifunctional hydrogel adsorbent. According to the present invention, the quaternary ammonium salt alkene monomer is introduced as a hydrophilic monomer, and the fluorine-containing alkene monomer is introduced as a hydrophobic monomer, so that the amine-fluorine bifunctional hydrogel adsorbent has a hydrophilic amine and hydrophobic fluorine dual-network interpenetrating porous structure, and the structure enhances water transmission and the mass transfer rate of a per- nd polyfluoroalkyl substance.

The invention discloses a bifunctional molecular group structure for photoresist. The bifunctional molecular group structure comprises a linker, PAG molecules and PDQ molecules. And the linker contains a carbon-oxygen chemical bond or a carbon-nitrogen chemical bond. PAG molecules and PDQ molecules are synthesized on each linker at the same time, wherein the number of the PAG molecules and the number of the PDQ molecules are in proportion, and the total number of the PAG molecules and the PDQ molecules is three or more. And PAG molecules are synthesized on the linker through a carbon-oxygen chemical bond. PDQ molecules are synthesized on the linker through a carbon-nitrogen chemical bond. The invention also discloses a synthesis method of the bifunctional molecular group structure for the photoresist. The invention also discloses a use method of the photoresist adopting the bifunctional molecular group structure. According to the invention, the proportion of PAG molecules to PDQ molecules can be set, so that the uniformity of PAG and PDQ in the photoresist can be ensured, the uniformity and roughness of the line width of the photoresist can be ensured, and different requirements of users on the contrast ratio and light sensitivity of chemical amplification glue can be met at the same time.

The invention discloses a high-wear-resistance Co-W composite coating electrolyte based on bifunctional particles as well as a preparation method and an electro-deposition method thereof, and relates to the technical field of material surface engineering. The electrolyte takes water as a solvent, and the mass percent of solutes in an electrolyte system is as follows: 3.59 to 8.07 percent of cobalt sulfate, 6.4 to 14.4 percent of sodium tungstate, 7.69 to 17.3 percent of a complexing agent, 1.92 to 4.32 percent of sodium chloride, 2.56 to 5.76 percent of a buffering agent, 2.56 to 5.76 percent of silicon carbide, 0.07 to 0.15 percent of carbon powder and 0.01 to 0.03 percent of a surfactant. And based on the electrolyte, the high-wear-resistance Co-W composite coating is prepared by adopting an electro-deposition method. By means of the supporting effect of the Co-W alloy matrix and the synergistic interaction of the silicon carbide and carbon powder dual-function particles, the comprehensive performance of the coating is remarkably improved, the whole process is convenient, fast and efficient, and the surface protection requirements of all industrial parts are met.

The invention discloses 1, 3-bifunctional isobutyramide pyridinium salt, a preparation method and application of the 1, 3-bifunctional isobutyramide pyridinium salt in antiviral drugs, and belongs to the field of drug synthesis. The preparation method comprises the following steps: under the protection of argon, by taking (3-(2-fluorophenyl)-2, 2-dimethyl propionyl) (pyridine-2-yl) amide as a raw material and dichloroethane as a solvent, adding palladium acetate, iodobenzene diacetate, water and acetic acid, and reacting to obtain 1, 3-hydroxyl / acetoxy pyridinium salt; the preparation method comprises the following steps: by taking N-(3-((2-(2-fluoro-4-phenylbiphenyl-3-yl)-2-methylpropionyl) oxy)-2, 2-dimethyl propionyl) pyridinium as a raw material and toluene as a solvent, adding palladium acetate, 4, 5-diazafluorene-9-one, iodobenzene diacetate, potassium carbonate and acetic anhydride, and reacting to obtain the 1, 3-diacetoxypyridinium salt. The synthesis process of the 1, 3-bifunctional isobutyramide pyridinium salt is simple and convenient, and the reaction conditions are mild; meanwhile, the pyridinium salt has good anti-enterovirus activity and is expected to become a medicine for effectively treating EV-A71 infection.

The application discloses a kind of bifunctional microcapsule adhesive composition and its preparation method, flexible metal-clad plate, flexible circuit board, and the adhesive composition includes epoxy resin matrix, interface bonding enhancement type microcapsule and thermal stress control type microcapsule dispersed therein.The interface bonding enhancement type microcapsule is coated with active substance using breakable wall material, breaks in the process of hot pressing lamination, releases content to realize the high-strength chemical bonding of substrate and metal layer;The thermal stress control type microcapsule is coated with phase change material using high-temperature resistant wall material, absorbs heat through phase change in subsequent reflow soldering etc. High-temperature process, effectively buffer interface thermal stress.Two kinds of microcapsules work together, respectively from the two dimensions of lamination manufacturing and use process reliability, significantly improve the interface bonding strength, heat shock resistance and long-term service life of flexible circuit board.In addition, the adhesive composition preparation process of the application is simple, and is compatible with existing copper-clad plate production process.

The invention belongs to the technical field of medicinal gel, and particularly relates to bifunctional naproxen choline gel as well as a preparation method and application thereof. The preparation method of the bifunctional naproxen choline gel comprises the following steps: S1, preparing naproxen sodium salt; s2, preparation of naproxen choline; s3, preparing blank gel; and S4, preparing the bifunctional naproxen choline gel. According to the method, naproxen sodium salt and naproxen choline which are relatively high in purity are prepared by adopting an alcohol system, and then the naproxen choline gel is prepared. Under the condition of the same drug loading capacity, compared with naproxen raw drug gel, the prepared naproxen choline gel shows a better transdermal effect and a faster transdermal rate. The ionic liquid is added into the naproxen choline gel, so that the penetration enhancing performance is improved, meanwhile, the green and low-toxicity choline lactate ionic liquid is synthesized, the toxic and side effects can be remarkably reduced, and the naproxen choline gel has higher application potential.

The invention relates to the technical field of carbon dioxide capture and adsorption, in particular to a calcium oxide-based adsorbent for high-temperature carbon dioxide capture and a preparation method. The adsorbent comprises a biomass calcium carbonate matrix, a skeleton proppant, a Ce-Zr-Cu composite oxide bifunctional aid, a conductive dispersant, a macropore-mesopore-micropore hierarchical porous structure formed by biomimetic mineralization of a biological template agent, and an amino functional group grafted by a surface modifier. The biomass calcium carbonate matrix is formed by compounding egg shells, shells and coral bones according to the mass ratio of 1: 1: 0.5; the skeleton proppant is formed by compounding a ZSM-5 molecular sieve and mesoporous gamma-aluminum oxide according to a mass ratio of 2: 1; in the scheme, biomimetic mineralization is realized by compounding a ZSM-5 / gamma-alumina skeleton and a Ce-Zr-Cu ternary auxiliary agent, introducing a PAN-based nitrogen-doped carbon network and matching with a diatom-egg white biological template, and APTES + PEI surface modification is performed, so that the problems of poor sintering, poor circulation, agglomeration and the like of a traditional adsorbent are solved in a targeted manner, double-temperature-zone adsorption is also realized, and the comprehensive performance is greatly improved.

Disclosed herein is an immunomodulatory fusion protein comprising IL-2;IL-12, a collagen binding domain, and a linear polypeptide spacer, and methods of making and using the same. Disclosed herein is an immunomodulatory fusion protein useful for treating cancer. Described herein are compounds, compositions, and methods for treating cancer. The compounds include fusion proteins comprising each of IL-2, IL-12, a collagen binding domain, and a linear polypeptide spacer.

The invention relates to a bifunctional polymer material for synergistically capturing extracellular vesicles as well as preparation and application of the bifunctional polymer material. The preparation method comprises the following steps: dissolving a phosphate compound containing a double-bond group, a compound containing double bonds and active functional groups and a cross-linking agent into water, and adjusting the pH value to be neutral; adding an initiator and a surfactant solution into the obtained solution, and carrying out emulsion polymerization reaction to obtain phosphoric acid functional polymer microspheres; reacting the obtained phosphoric acid functional polymer microspheres with a reactive probe reagent solution, a protective agent and an activating agent to obtain a phosphoric acid and lipid probe bifunctional polymer microsphere material; and adding the obtained phosphoric acid and lipid probe bifunctional polymer microsphere material into a metal salt solution for reaction to obtain the polymer material for bifunctional synergistic capture of extracellular vesicles. The preparation method is simple and easy to implement, safe, efficient and environmentally friendly, and the prepared difunctional synergistic polymer microsphere material can efficiently and rapidly enrich EVs from biological samples such as cell culture fluid, urine and plasma.

The invention discloses a non-activated olefin transfer hydrogenation method driven by a light / cobalt / mercaptan triple catalytic system. Olefin compounds and derivatives thereof are used as raw materials, bio-based gamma-terpinene is used as a hydrogen source, and catalytic circulation is realized through a hydrogen atom transfer (HAT) relay mechanism under the mild condition of visible light irradiation. The method is characterized in that (1) a dual-function activation mode of gamma-terpinene is created for the first time, wherein weak bonding diallyl C-H bonds (BDE = 76kcal / mol) synchronously provide hydrogen atoms and aromatization driving force; and (2) a three-catalyst synergistic system: an organic photosensitizer / cobalt-based catalyst / thiol reagent forms a cascade HAT pathway. (3) normal-temperature normal-pressure operation: high-pressure equipment is not needed, and the reaction time is less than 24 hours; the method breaks through the dependence of traditional hydrogenation on precious metal, high-pressure hydrogen and an oxidizing agent, realizes efficient hydrogenation of non-activated olefin, and provides a new way for synthesis of drug molecule intermediates.

The invention relates to the technical field of preparation of electrocatalytic materials, in particular to an oxygen reduction and carbon dioxide reduction electrocatalyst and a preparation method and application thereof. According to the invention, ZIF-8 is taken as a framework, dinonyl carbonyl iron and copper phthalocyanine are respectively taken as metal sources, and a high-temperature calcination method is adopted to prepare the series bifunctional electrocatalyst with ORR and CO2RR. The material has ORR activity equivalent to that of a traditional Fe-N-C material, the oxygen reduction performance of the catalyst in an alkaline medium exceeds that of a Pt-based catalyst, and the material has higher half-wave potential and stability; and the high-selectivity CO2RR activity is also realized. The material is simple in preparation method and wide in application range, has structural universality adapting to reaction scenes, and can be applied to the field of metal-gas batteries.

The present application relates to a kind of biomass acid-base bifunctional heterogeneous catalyst for synthesizing biodiesel and its preparation method, its raw material source is extensive, low cost.Use poplar leaves and eggshell as catalyst raw material, waste into treasure.Catalyst in the process of catalyzing biodiesel synthesized by ester exchange of sheep oil, reaction yield is high.Sulfuric acid sulfonated biochar is compounded with eggshell, so that the catalyst has acid-base double site, and thus has good acid resistance.Biochar as carrier, the active component loaded is not easy to fall off, and increase specific surface area, enhance the activity and reaction stability of catalyst.The method can alleviate the problems such as active site leaching, poor repeatability and weak acid resistance in the process of calcium-based heterogeneous base catalytic ester exchange, and has important practical significance for actual industrial production.

The invention discloses an S-doped Ru2P / Ru difunctional electrocatalyst derived from cucurbituril [6] as well as a preparation method and application of the S-doped Ru2P / Ru difunctional electrocatalyst. Belongs to the technical field of HER catalysts. The invention relates to a cucurbituril [6]-derived S-doped Ru2P / Ru bifunctional electrocatalyst, which is a bifunctional electrocatalyst Ru2P / Ru-S-CBC obtained by taking cucurbituril [6] as a carrier, introducing RuCl3, 4, 4 '-sulfodiphenol and hexachlorocyclotriphosphazene as construction units, growing a poly (cyclotriphosphazene-co-4, 4'-sulfodiphenol) polymer coating on the surface of the cucurbituril [6] in situ and carrying out pyrolysis. The electrocatalyst prepared by the invention shows excellent electrocatalytic HER and hydrazine oxidation activity in an alkaline electrolyte, provides a premise for replacing an oxygen evolution reaction with a HzOR reaction, and also realizes low-energy-consumption and high-stability electrochemical hydrogen production.

The invention provides a coumarin derivative-based bifunctional oxime sulfonate compound as well as a preparation method and application thereof, and belongs to the field of photoacid generators. According to the invention, coumarin is used as a parent, two coumarin oxime sulfonate esters are connected by using different bridging groups, regulation and control of photophysical and photochemical properties are realized by adjusting the bridging groups and oxime side groups, and the obtained photoinitiator has good absorption under ultraviolet light and has good photo-acid production quantum yield. The bifunctional oxime sulfonate compound can efficiently generate organic sulfonic acid under irradiation of a 365nm light source, has good photo-acid production efficiency and efficiency of initiating photopolymerization of epoxy monomers, can catalyze polymer acid unstable groups to fall off and regenerate new acid molecules, and solves the problems that in the prior art, a photo-acid generator is insufficient in acid production efficiency, and the photopolymerization efficiency is low. And the photopolymerization of the initiated epoxy is not sensitive enough.

The invention discloses two bifunctional carbon nitride photocatalysts (2Cl-CNT and 2CH3O-CNT) suitable for an extreme pH environment as well as a preparation method and application of the two bifunctional carbon nitride photocatalysts (2Cl-CNT and 2CH3O-CNT). The carbon nitride nanotube is used as a carrier, dichloro or dimethoxyl is loaded through covalent bonds, and the carbon nitride nanotube / dimethoxyl composite material has electronic regulation and control and interface protection functions. A thermal polymerization method is adopted for preparation, urea, melamine and corresponding functional group precursors are used as raw materials, and step-by-step calcination is performed in a nitrogen atmosphere. The catalyst can stably work in the pH range of 1-13, the catalytic activity is better under the extremely-acid and extremely-alkaline conditions, the highest yields of H2O2 reach 28.6 and 11.5 mmol g <-1 > h <-1 > respectively, and the activity retention rate is larger than or equal to 99% after circulation for five times. The preparation method is simple, the preparation cost is low, the process is simple, H2O2 can be synthesized in situ, organic pollutants can be degraded, and the method is suitable for industrial extreme pH scene treatment of acid extraction wastewater, dye wastewater and the like.

The present application relates to a kind of targeted degradation androgen receptor bifunctional chimeric heterocyclic compound and its purposes, specifically provides the compound shown in formula (I), or its isotopic compound, or its optical isomer, or its tautomer, or its pharmaceutically acceptable salt, or its prodrug, or its solvate, wherein, ARB is androgen receptor recognition / binding portion, L is linking portion, U is ubiquitin protease recognition / binding portion;Three parts are connected by chemical bond.The above-mentioned compound provided by the present application can target degradation androgen receptor in prostate cancer cell, and inhibit the proliferation of prostate cancer cell, also show good metabolic stability and pharmacokinetic property.The compound of the present application has good application prospect in the preparation of androgen receptor protein degradation targeting chimera, and the preparation of the drug for treating related diseases (including prostate cancer, breast cancer, Kennedy disease) regulated by androgen receptor.

This application provides a secondary battery and an electrical device. The secondary battery includes an electrolyte, which comprises a solvent and additives: the additives include bifunctional electrolyte additives; the solvent includes methylated ether solvents, which include methyl-substituted α-H ether compounds. This application improves the gas generation problem of the battery by improving the electrolyte.

The application provides a kind of based on nano-alumina bifunctional modified environment-friendly ester-based insulating oil and its preparation method and application, belongs to electrical insulation material technical field.The application is based on the bifunctional surface modification technology of nano-alumina, first surface functionalization modification is carried out to nano-alumina in PEI solution, and the second surface functionalization modification is carried out to nano-alumina after PEI modification using silane coupling agent;The bifunctional modified nano-alumina particles are dispersed in ester-based insulating oil, and the bifunctional modified environment-friendly ester-based insulating oil is obtained.The application can significantly improve the power frequency breakdown voltage, thermal conductivity and reduce acid value of environment-friendly ester-based insulating oil by adjusting the ratio and content of bifunctional modified nano-alumina, combined with the synergistic effect of PEI and silane coupling agent, which fills the gap of prior art.

The invention discloses difunctional aerogel based on an MOF chitosan filler as well as a preparation method and application of the difunctional aerogel, and belongs to the technical field of gas adsorption and sensing materials. The preparation method of the material comprises the following steps: preparing an amino-functionalized metal organic framework material, dispersing the amino-functionalized metal organic framework material and chitosan in water, and then adding a cross-linking agent for cross-linking reaction to obtain an MOF chitosan filler; mixing the MOF chitosan filler with graphene oxide, adding the mixture into an aqueous solution of konjac glucomannan, performing stirring treatment, and performing freeze drying to obtain pregel; and putting the pre-gel into an alkaline ethanol solution, carrying out heating treatment, and carrying out freeze drying again to obtain a target product. The gas adsorption performance and the sensing sensitivity of the prepared material are remarkably improved, and the technical problem that efficient capturing and rapid alarming are difficult to achieve at the same time through a traditional material is successfully solved.

The application provides a bifunctional microspherical catalyst for catalyzing CO x The application provides a bifunctional microspherical catalyst for catalyzing CO + H2 into aromatic chemical products / liquid fuel, a preparation method and application thereof. First, a basic metal oxide and a silicon-aluminum molecular sieve are mixed with nano-yttrium oxide modified phosphoric acid ceramic glue, and are calcined in a reducing atmosphere. Under the action of the modified yttrium oxide ceramic glue, the basic metal oxide is electrically welded on the surface of the silicon-aluminum molecular sieve to form a composite catalyst (a first precursor) in which the basic metal oxide and the silicon-aluminum molecular sieve are closely combined. Then, an acid silicon sol is used as a main binder, and an aluminum-containing glue is used as an auxiliary binder. The binder, a base material, the first precursor and deionized water are mixed to form a gel-like suspension, and the gel-like suspension is subjected to high-speed shearing treatment, spray granulation treatment and calcination treatment, so that the bifunctional microspherical catalyst with high wear resistance and the requirement of catalyst activity is prepared. The wear index of the catalyst is less than 2, and even can reach 1.2.