998 results about "Green chemistry" patented technology

The invention relates to a method for preparing lithium sulfide, which comprises the following steps: respectively dissolving a sulfur source compound and a lithium source compound in alcohol under the protection of inert atmosphere, and then mixing the two alcohol solutions for double decomposition reaction to generate a lithium sulfide suspension; and then carrying out evaporative crystallization, supercritical fluid washing, centrifugal separation and freeze drying treatment to obtain a lithium sulfide product. The purity of the lithium sulfide prepared through the method can reach 99.9% or above, the lithium sulfide can be used as a positive electrode material of a lithium-sulfur battery or a raw material of a sulfide solid electrolyte in an all-solid-state battery, and the method is low in energy consumption, conforms to the concept of green chemistry and is suitable for large-scale industrial production.

The invention provides a method and system for detecting the content of platinum, palladium and rhodium in an automobile exhaust purification catalyst and application, and relates to the technical field of automobile exhaust purification, the method comprises the following steps: crushing, grinding, sieving, performing microwave acidolysis, neutralizing, washing and drying a catalyst sample to obtain dry filter residues; a trapping agent and a fluxing agent are added into the dry filter residues, constant-temperature heating is conducted in inert gas, then cooling forming is conducted, and an alloy button is obtained; blowing ash on the alloy, then adding mixed acid into the alloy, heating the alloy in a water bath at 95 DEG C for 25-35 minutes to obtain a dissolved solution, then adding a masking agent into the dissolved solution, and oscillating to obtain a solution to be detected; and filtering the liquid to be detected, fixing the volume and detecting. According to the method, precise quantification of trace platinum, palladium and rhodium in the complex matrix catalyst can be realized, and the method has a relatively high recovery rate; meanwhile, pollution elements are prevented from being used, and the method is green and efficient and better conforms to the concept of green chemistry.

The invention provides a preparation method of 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride, which comprises the following steps: salifying 4-fluoro-3, 5-dimethylaniline serving as a substrate with concentrated hydrochloric acid, reacting with sodium nitrite to prepare a diazo solution, reducing the diazo solution into corresponding phenylhydrazine by using alkaline sodium sulfite as a reducing agent system, and reacting the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride with the diazo solution to prepare the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride. And acidizing the 2, 5-dimethyl phenylhydrazine to obtain corresponding phenylhydrazine hydrochloride. According to the preparation method, sodium sulfite which is low in cost and easy to obtain is used as a reducing agent, the defects that metal residues are high, the environment is prone to being polluted and the raw material cost is high due to the fact that a metal reducing agent is adopted when phenylhydrazine hydrochloride is prepared in the prior art are overcome, the reaction is completed in a water phase, no organic solvent is adopted, and the concept of green chemistry is met; and the problems of complicated post-treatment and easy pollution caused by the adoption of an organic solvent can be effectively avoided.

The invention discloses preparation and application of an environment-friendly P, N and Si synergistic flame retardant. According to the flame retardant (KDOPO-LDH (at) GO), a plurality of flame-retardant elements such as P, N and Si are integrated, so that an efficient synergistic flame-retardant system is constructed. Wherein the existence of the N element and the Si element effectively promotes the uniform dispersion of the flame retardant in an epoxy resin matrix; meanwhile, the unique molecular structure of the P-containing component endows the carbon-forming agent with excellent carbon-forming performance under a high-temperature condition. Through the synergistic effect of multiple elements, the flame retardant property of the epoxy resin is remarkably improved, and meanwhile, the good mechanical property of the material is effectively maintained. In addition, halogen-free and low-toxicity substances are mainly generated in the pyrolysis process of the flame retardant, and the green chemical concept is met.

The invention provides an airflow drying and surface modification technology for lemon fibers, relates to the technical field of lemon surface processing, and realizes the whole process optimization of lemon fiber production through ultrasonic-microwave synergistic extraction, pulse type ultrasonic-hot air coupling airflow drying, low-temperature plasma surface modification and an intelligent control system based on Q-learning. The pectin yield is increased by about 20% through ultrasonic-microwave synergistic extraction, the extraction time is shortened by 50%, flow drying is assisted by double-frequency ultrasonic waves and magnetized water mist, the drying time is shortened by 50%, the energy consumption is reduced by 20%, the fiber softness is improved by 15%, the fiber is endowed with 99% antibacterial rate and excellent hydrophilicity through low-temperature plasma modification, chemical reagents are not needed, and environmental pollution is reduced. The intelligent control system converts waste liquid into ethanol and lactic acid through real-time data optimization and closed-loop resource utilization, zero waste discharge is achieved, the ethanol yield is increased by 12%, the additional value of lemon peel byproducts is remarkably increased, and the method is suitable for the fields of food and materials and conforms to the green chemistry concept.

The invention provides a preparation method of rotaxane mechanical interlocking molecules. According to the preparation method, under the condition of not adding a catalyst, dibenzene-24-crown-8, benzene-21-crown-7, an isocyanate derivative and a rod-shaped compound are subjected to a reaction by adopting a one-pot method to obtain the rotaxane mechanical interlocking molecule. The preparation method not only can reach 100% of atom economy and meet the requirements of green chemistry, but also can reach the yield of 65% or above, and realizes efficient preparation of rotaxane mechanical interlocking molecules.

The invention discloses a preparation method for synthesizing coal-based carbon quantum dots through microbial catalysis, which comprises the following specific preparation steps: (1) pretreating coal, specifically comprising crushing and sterilizing treatment; (2) combining the pretreated coal sample with selected microorganisms or biological factors, and carrying out fermentation treatment on the coal; (3) after fermentation is completed, dialyzing the coal fermentation liquid to prepare a carbon quantum dot solution; (4) separating and purifying the dialyzed carbon quantum dot solution to remove impurities; and (5) carrying out quick freeze-drying on the separated and purified carbon quantum dot solution to obtain the carbon quantum dots with fluorescent properties. According to the method, microorganisms serve as a core, an aerobic or anaerobic fermentation process is combined, coal resources are fully utilized, and efficient preparation of the coal-based carbon quantum dots is achieved. The method not only has good environmental protection property, but also can provide a new technology for industrial production of the carbon quantum dots, and has important significance for efficient conversion and green chemical synthesis of coal.

The present invention provides a cyclic carbonate synthesis method, and belongs to the technical field of organic ester compound synthesis, and the cyclic carbonate synthesis method comprises the following steps: S1, 1, 3-propylene glycol, a dehydrating agent and a catalyst are added into a high pressure reaction kettle, and CO2 is introduced into the high pressure reaction kettle for a reaction; s2, after the reaction is finished, after the high-pressure reaction kettle is cooled to the room temperature, redundant gas in the high-pressure reaction kettle is discharged, after the gas in the high-pressure reaction kettle is completely discharged, the high-pressure reaction kettle is opened, the catalyst is filtered out, and the solution is subjected to vacuum-pumping separation to obtain a target product; the catalyst is a heterogeneous catalyst MxOy (at) Zn-dpot. Carbon dioxide conversion is carried out in a chemical utilization mode, a chemical product trimethylene carbonate can be produced, the synthesis route is easy to operate, and after the MxOy at Zn-dpot catalyst is added, the yield is high, the high additional value is achieved, and the green chemistry concept is met.

The invention discloses a preparation method and application of a self-supporting metal polyphenol network nano-film, and belongs to the technical field of films. The method comprises the following steps: growing at a two-phase interface of a polyphenol aqueous solution and an organic solution of metal salt by adopting an interface assembly method to obtain the self-supporting metal polyphenol network nano-film, and regulating and controlling the thickness of the self-supporting nano-film by regulating and controlling interface assembly time, reactant concentration, ionic strength, organic solvent type, pH value and reaction temperature. The raw materials used in the method are green, safe, easy to obtain and low in price, and meet the requirements of green chemistry. The prepared self-supporting nano-film can be suitable for various substrates due to universal adhesion, is applied to different separation scenes, and has a good industrial production basis and a wide application prospect.

The invention provides a synthesis method of (S)-3-aminobutyronitrile, which specifically comprises the following steps: (1) addition of diketene and ammonia to prepare acetoacetamide; (2) performing an enzyme catalytic reaction on the acetoacetamide obtained in the step (1) in the presence of transaminase, and purifying after the reaction is completed to obtain (S)-3-aminobutanamide; and (3) dehydrating the (S)-3-aminobutanamide obtained in the step (2) to obtain the (S)-3-aminobutyronitrile. According to the synthesis method, the synthesis route is simplified, the production efficiency of the (S)-3-aminobutyronitrile is improved, industrial three wastes are reduced, the use of highly toxic substances is avoided, the cost reduction and benefit improvement in the industrial amplified production are facilitated, and the whole route embodies the value of green chemical synthesis.

The invention discloses bio-based polyol as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing lignin, sugar alcohol, polyhydric alcohol and concentrated acid, and carrying out liquefaction reaction to obtain the bio-based polyhydric alcohol. According to the preparation method provided by the invention, the lignin is combined with the sugar alcohol and the polyhydric alcohol to prepare the polyhydric alcohol with high bio-based content, and on one hand, the bio-based polyhydric alcohol is highly renewable on the raw material level and conforms to the concepts of green chemistry and circular economy; on the other hand, due to the introduction of sugar alcohol, the flexibility and elasticity of the polyurethane material can be improved, the strength and chemical resistance of the material are improved, and a new path is provided for the development of the polyurethane industry in the future.

Provided are a preparation method for alpha-amino acid ester acyl transferase, and a use thereof in dipeptide synthesis. A method for dipeptide synthesis comprises: using alpha-amino acid ester acyl transferase to perform a dipeptide synthesis reaction, to obtain a dipeptide; the alpha-amino acid ester acyl transferase has a conserved region with an amino acid sequence as shown in SEQ ID NO: 1. Using the alpha-amino acid ester acyl transferase, a variety of functional dipeptides can be synthesized, a substrate spectrum is wide, and the synthesis efficiency of some enzymes is high; this can be well used for industrial amplification, with low cost and high yield, thus realizing green chemistry.

The invention discloses a surface modification method for an ultra-high nickel ternary positive electrode material of a lithium ion battery by ALD (atomic layer deposition), which specifically comprises the following steps: uniformly dispersing the ultra-high nickel ternary positive electrode material in a metal tray, and feeding the metal tray loaded with the ultra-high nickel ternary positive electrode material into ALD atomic deposition equipment; atomic layer vapor deposition with a set process and a set cycle index is carried out, and a deposited product is placed in a tubular furnace to be heated and then subjected to heat preservation. According to the method, surface modification of the ultrahigh-nickel ternary positive electrode material is completed in a vacuum and protective atmosphere environment, so that side reaction between the high-activity surface of the material and an environmental medium is avoided, and the requirement of green chemistry is met; meanwhile, controllable and uniform deposition of a micro-nano-scale coating layer is realized; and in combination with a heat treatment process, HfO2 coating of the ultrahigh nickel ternary positive electrode material is completed.

The invention belongs to the technical field of recycling of waste blended textiles, and particularly discloses a method for oxidative depolymerization of waste blended textiles into alpha-hydroxy acid and terephthalic acid, which comprises the following steps: adding waste blended textiles, a solid acid catalyst and a reaction solution into a catalytic reaction kettle, filling a certain amount of air and / or oxygen, and reacting for 2-4 hours; the method comprises the following steps: adding alpha-hydroxy acid into a reaction kettle, heating to a specified temperature, stirring, carrying out selective oxidative depolymerization, after the reaction is finished, filtering, concentrating, separating and purifying the product to obtain terephthalic acid, glycollic acid and lactic acid, and taking terephthalic acid and alpha-hydroxy acid as depolymerization products of blended textiles and also as catalysts to participate in depolymerization of blended textiles. According to the method, the autocatalysis process of depolymerization conversion of the waste blended textiles is achieved, the product composition is simple and easy to recycle, carbon atoms in the raw materials are fully utilized, the requirement of green chemistry is met, depolymerization conversion of multiple components in the waste blended textiles is achieved through a one-pot method, the process steps are few, economic benefits are high, and actual operation is simple.

The invention provides an alkene reductase mutant and an application of the alkene reductase mutant in synthesis of (R)-2-dimethyl methylsuccinate. According to the method, the olefin reductase is subjected to directed evolution to obtain the olefin reductase mutant with improved enzyme activity and substrate tolerance, the obtained mutant can be used for efficiently reducing dimethyl itaconate to prepare the high-optical-purity (R)-2-dimethyl methylsuccinate, and the reaction substrate concentration, the reaction yield and the optical purity of the product are high; the reaction process is simple to operate and low in energy consumption, and meets green chemical requirements. Therefore, the method disclosed by the invention can be applied to the biotransformation of the industrial production of the (R)-2-methyl dimethyl succinate.

The invention discloses a surface defect and oxygen doping co-modified pore-rich g-C3N4 nano material as well as preparation and application thereof. The preparation method comprises the following steps: mixing a white viscous melamine-cyanuric acid suspension with an oxalic acid solution to obtain a melamine-cyanuric acid-oxalic acid suspension solution, carrying out hydrothermal treatment to obtain a hydrogen bond connected self-assembled supramolecular aggregate, and finally carrying out thermal polycondensation on the self-assembled supramolecular aggregate and formaldehyde to obtain the surface defect and oxygen doping co-modified porous g-C3N4. The surface defect and oxygen doping co-modified g-C3N4 nano material with different morphologies and physicochemical properties is obtained. The preparation method is simple in process flow, efficient, low in cost and suitable for large-scale production, and the synthesis process meets the green chemical requirement; the obtained nano material has a higher specific surface area and more active sites, and has higher catalytic reaction and adsorption performance on organic pollutants, namely levofloxacin, ciprofloxacin and tetracycline hydrochloride, in a water body.

The invention relates to the technical field of isotope separation, and particularly discloses a functionalized ionic liquid as well as a preparation method and application thereof in separation of boron isotopes. The ionic liquid prepared from halogenated ether, a nitrogen-containing compound and fluorine-containing inorganic salt is used as a complexing agent for boron isotope separation. The ionic liquid has good chemical stability and thermal stability and can be kept stable in the long-time separation process of boron isotopes; the ionic liquid has unique selectivity, has different affinity and complexing stability to 10B and 11B, and is convenient to realize accurate separation of 10B and 11B; the boron isotope separation agent also has excellent solubility and flowability, can fully contact and react with boron isotopes, improves the separation efficiency, reduces equipment blockage and energy consumption, and provides convenient conditions for large-scale industrial boron isotope separation; in addition, the ionic liquid has better environmental friendliness, better meets the development requirements of green chemistry, and has huge application potential in the field of boron isotope separation.

The invention relates to preparation of a ZnCu-MOF dissimilar metal photocatalyst and application of the ZnCu-MOF dissimilar metal photocatalyst in the field of photocatalytic organic conversion. The technical field includes but is not limited to the fields of catalytic chemistry, material science, environmental engineering, green chemistry and the like. According to the invention, a carboxylic acid derivative and an adenine derivative are used as ligands, a zinc salt and a copper salt are used as dissimilar metal sources, and ZnCu-MOF is obtained by a one-pot method. Under the irradiation of blue light, the photocatalyst is applied to conversion of benzimidazole and derivatives thereof as a photocatalyst, the universality range of a substrate is wide, and the photocatalytic conversion yield of the photocatalyst reaches up to 90%. And the prepared ZnCu-MOF material shows an excellent photocatalytic conversion capability. Through the technology provided by the invention, the efficiency and selectivity of photocatalytic organic conversion reaction can be improved, and the development of sustainable chemical reaction is promoted.

The invention belongs to the technical field of preparation of low-dimensional nano composite materials, and discloses a simple and rapid preparation method of an MXene-noble metal composite nano material. The method is based on the principle of mild chemical reduction, meanwhile, the reduction capacity of lone pair electrons of MXene is utilized, and mild preparation of the MXene-precious metal composite nanomaterial can be achieved. Controllable preparation of different MXene-noble metal composite nanomaterials can be realized by flexibly adjusting the components of the noble metal precursor. Meanwhile, the used chemicals are few in variety and environment-friendly, and the principle of green chemical synthesis is combined.

The invention belongs to the technical field of man-machine interaction dry electrode preparation, and particularly relates to a reusable antibacterial dry electrode and an assembly method thereof. According to the preparation method, a PEDOT / PSS dispersion solution is prepared at room temperature through an organic-solvent-free green chemical method for the first time, then the mass ratio of PEDOT / PSS to MPBCD is balanced, and rigid conductive polymer PEDOT / PSS is rapidly assembled into a conductive dry electrode film which is flexible, adjustable in bonding capacity and capable of being remolded for use in one step; wherein the mass ratio of PEDOT to PSS in the PEDOT / PSS dispersion liquid is 1: 3.8, the mass ratio of the PEDOT / PSS solution to the MPBCD solution is 1: 30, and the prepared dry electrode has good conductivity, can be repeatedly used for a long time, is soft and good in cohesiveness, and also has excellent regeneration and antibacterial properties. The EMG and EOG signals can be accurately measured according to the adhesion and skin compliance, and the sensor can be prepared by connecting a lead and a film, so that the sensor has a wide application prospect.

The invention relates to a pyrazinyl covalent organic framework material as well as a preparation method and application thereof, 2, 5-dimethylpyrazine and aromatic aldehyde monomers are taken as construction elements, and the pyrazinyl covalent organic framework material connected with two olefins is synthesized through a Knoevenagel reaction. The pyrazinyl covalent organic framework material disclosed by the invention has good chemical stability and full-conjugate skeleton characteristics, shows excellent photocatalytic activity and cycling stability in visible light driven thioether oxidation reaction, and has potential application value in the fields of environmental restoration and green chemistry.

The present invention discloses a method for heterogeneous catalytic synthesis of a key intermediate of a lithium bis(fluorosulfonyl)imide electrolyte (chemical name: bis(chlorosulfonyl)imide). The heterogeneous catalytic method comprises: reacting chlorosulfonic acid with chlorosulfonyl isocyanate under the action of a heterogeneous catalyst, filtering the catalyst directly after the reaction is completed, and directly applying it to the next batch of synthetic reactions, filtering the mother liquor and performing vacuum distillation to collect the target intermediate bis(chlorosulfonyl)imide fraction. Compared with the prior art, the present invention has the advantages of reusable catalyst, less residual waste, low cost, extremely high industrial application value, and is also in line with the upgrading of the green chemical industry alternative industry.

The invention discloses a precise construction strategy of a dibenzothiophene sulfuryl covalent organic framework material and systematically explains efficient application of the dibenzothiophene sulfuryl covalent organic framework material in photocatalytic synthesis of thiadiazole and derivatives thereof. The achievement relates to a plurality of leading subjects such as catalytic chemistry, organic synthesis, material science, environmental engineering and green chemistry. According to the method, 2, 4, 6-triformyl phloroglucinol and 3, 7-diaminodibenzo [b, d] thiophene-5, 5-dioxide are taken as construction units, and the crystalline S-COF rich in sulfuryl active sites can be quantitatively obtained through topology-oriented Schiff base condensation under the conditions of protonic acid catalysis, no water and no oxygen. Under the radiation condition of visible blue light, S-COF is used as a heterogeneous photocatalyst to drive green synthesis of 3, 5-di-p-tolyl-1, 2, 4-thiadiazole and series of derivatives thereof; the invention provides a new catalyst design normal form for light-induced organic conversion, and lays a solid foundation for sustainable development-oriented efficient synthesis chemistry.

The invention discloses a preparation method and application of a wood nanocellulose ternary composite preservative film, and belongs to the technical field of biomass nanocellulose functional materials. Lignin and nanocellulose components are separated from peanut shells by using a ternary eutectic solvent, the novel green wood nanocellulose ternary composite fresh-keeping liquid is prepared by blending chitosan natural macromolecules, a wood nanocellulose ternary composite film can be formed on the surfaces of fruits and vegetables, and a good fresh-keeping effect is achieved. Meanwhile, the preparation method provided by the invention is simple, and the prepared film has excellent mechanical properties and stability, and can effectively delay ripening, aging and water loss of fruits, so that the luster and freshness of the fruits are maintained, the storage capacity of fresh fruits and vegetables is improved, and the film has a wide application prospect. In addition, the used deep eutectic solvent is very environment-friendly, meets the standard of green chemical production, and has good practical application value.

The invention belongs to the field of preparation of oxidized starch, and relates to a method for preparing oxidized starch by a mechanochemical method. Hydroxyl of corn starch is oxidized by hydrogen peroxide to generate modified starch with high carboxyl content, so that the modified starch has wider application. The preparation thought of a full bio-based mechanical method is adopted, the obtained modified starch has good economical efficiency, environmental safety and natural degradability, and the problems that an oxidized starch preparation process in the current market is large in environmental pollution, wastes resources, is tedious in process and the like are solved. According to the invention, biomass is used as a reaction raw material, is renewable and degradable, and accords with the green chemistry concept.

The invention provides a preparation method of a cross-linking agent, the cross-linking agent and application of the cross-linking agent, a precursor HAPCP is prepared from phosphonitrilic chloride trimer and p-hydroxybenzaldehyde, then chain extension is performed on the precursor HAPCP and aminoethyl acrylate hydrochloride to obtain a solid substance D, and finally, the target cross-linking agent is prepared from the solid substance D and DOPO. The molecular formula of the target cross-linking agent is C150H138N9O24P9, the cross-linking agent prepared by the process contains two flame-retardant groups, namely cyclotriphosphazene and DOPO, and also contains a large amount of acrylate groups, and in the production process of the flame-retardant unsaturated polyester resin, the flame-retardant unsaturated polyester resin has excellent flame-retardant property and flame-retardant property. Two non-halogen flame-retardant groups, namely cyclotriphosphazene and DOPO, can be simultaneously introduced into an unsaturated polyester resin matrix through the cross-linking agent, the flame retardance of the flame-retardant unsaturated polyester resin can be remarkably improved under the synergism of the two flame-retardant groups, the cross-linking requirement of unsaturated polyester can be met, the flame-retardant property requirement can also be met, and the cross-linking agent has the advantages of being high in applicability, low in cost and the like. The method conforms to the green chemistry concept and is convenient to popularize and implement.

The invention provides a synthesis method of tilpotide, which comprises the following steps: dividing a target peptide chain into six fragments, and adopting bis (4-C18-C28 alkoxy phenyl) methylamine, 2, 4-bis (18-C28 alkoxy)-benzyl alcohol and NH2-Asp (OTAG)-OR1 as hydrophobic label carriers to assist synthesis. A side chain carboxyl group of aspartic acid is innovatively used as an anchoring position of a hydrophobic label, a new fragment connection route is designed, a full-protection tilpotide conjugate is synthesized through a multi-label synergistic effect, and finally a protecting group and a label are removed by using a TFA lysate. Compared with a solid-phase synthesis method, the method is carried out in a homogeneous reaction, the dosage of amino acid and the condensing agent is reduced to 1-1.2 times from 2-3 times, and the cost is remarkably reduced. Compared with an existing hydrophobic labeling method, the method has the advantages that multiple labels can be introduced to serve as protecting groups, the yield and purity of synthesis of medium-chain and long-chain polypeptides are improved, meanwhile, the problem of hydrophobicity attenuation caused by peptide chain extension is solved, and the green chemical process requirement is met.

The invention discloses a porous carbon material based on microwave calcination and a preparation method thereof, and belongs to the field of porous carbon preparation, the preparation method comprises the steps that a carbon base material and potassium hydroxide are mixed according to the mass ratio of 1: 1-5, a mixed material is obtained, and the carbon base material comprises biomass carbon, resin carbon and fossil carbon; the mixing comprises the following steps: putting the carbon base material and potassium hydroxide into a mixer, and stirring at the rotating speed of 200-600rpm for 3-20 minutes; pressing the mixed material into a block body, and putting the block body into a microwave calcining furnace for calcining treatment; and the calcined block is subjected to acid pickling and drying treatment. The cost and the performance can be adjusted as required by using diversified raw material sources, and the trend of green chemistry and sustainable development is met.

The present invention relates to the technical field of polymer preparation. Disclosed are a covalent organic framework material, and a preparation method therefor and a use thereof. The preparation method for the covalent organic framework material comprises the following step: subjecting an organic aldehyde and an organic amine to a condensation reaction in a deep eutectic solvent to obtain the covalent organic framework material, wherein the deep eutectic solvent is a two-component eutectic liquid composed of menthol and acetic acid. The temperature for the reaction is 25-120ºC, and the time for the reaction is 1-72 hours. The deep eutectic solvent composed of menthol and acetic acid used in the present invention has good dissolution properties for organic matters, and can also efficiently catalyze the condensation reaction between the organic amine and the organic aldehyde. The prepared covalent organic framework material exhibits high crystallinity and has good applications in the fields of adsorptive separation, heterogeneous catalysis, energy storage, etc. The present method has mild reaction conditions, simple operation, and good universality, is conducive to industrial large-scale production, and conforms to the concept of green chemistry.

A preparation method of a Pueraria lobata nano-silver composite hydrosol includes: dispersing Pueraria lobata powder in water, then heating to perform gelatinization, then adjusting a pH value, then sequentially adding an alkyl polyglucoside solution, a silver nitrate solution, and a sodium chloride solution, and performing a reaction by microwave heating to obtain the Pueraria lobata nano-silver composite hydrosol. The Pueraria lobata nano-silver composite hydrosol promotes seed germination of a Polygonatum Mill genus, and is applied in antibiotic detection and agricultural sterilization used as a fungicide. Organic solvents, harmful reducing agents, and dispersing agents are completely avoided to be used, and raw materials for preparing the hydrosol are safe and environment-friendly; the preparation method is simple, no harsh conditions are needed, and reaction conditions are mild; a required time is extremely short, energy is saved, consumption is reduced, and a basic principle of green chemistry is completely met.