94results about How to "Short synthesis time" patented technology

The invention belongs to the technical field of oil and gas field development, and particularly relates to a CO2 thickening agent for supercritical CO2 oil displacement and a preparation method of the CO2 thickening agent. The preparation method of the CO2 thickening agent for supercritical CO2 oil displacement comprises the following steps: (1) mixing a maleic anhydride compound and a styrene compound, dissolving in water, introducing inert gas, and heating; (2) slowly dropwise adding a mixed solution of a vinyl acetate compound and an initiator, and cooling after the reaction is finished; and (3) filtering, washing a solid phase by using an anhydrous alcohol substance, drying, and grinding to obtain a thickening agent product. The supercritical CO2 thickened by the thickening agent prepared by the invention can effectively slow down the viscous fingering phenomenon in the displacement process and improve the CO2 sweep efficiency, thereby improving the crude oil recovery rate.

The invention discloses a synthesis method of magnesium L-threonate. The synthesis method comprises the following steps: S1, preparing food-grade calcium L-threonate into an aqueous solution; s2, oxalic acid is added into the aqueous solution according to the molar ratio of 1: 1, and ultrasonic treatment is conducted for 30 min or above; s3, performing water bath treatment on the reaction mixed solution in a water bath at 0-4 DEG C, and then filtering to remove precipitates to obtain an L-threonic acid solution; s4, adding excessive magnesium oxide micro powder into the L-threonic acid solution, reacting, naturally cooling to room temperature, and filtering to remove precipitate to obtain an L-magnesium threonate solution; and S5, adding absolute ethyl alcohol into the magnesium L-threonate solution, then filtering to obtain a precipitate, washing the precipitate with absolute ethyl alcohol, and carrying out vacuum drying until the weight is constant, thereby obtaining the magnesium L-threonate. The invention further discloses the synthesis method and application in the pharmaceutical field. The synthesis efficiency is relatively high, the overall yield is also high, and it can be ensured that the purity of the synthesized magnesium L-threonate is high.

The invention discloses a plant-derived Argonaute protein and application thereof, and belongs to the technical field of gene editing and detection. The plant-derived Argonaute protein is specifically a protein with an amino acid sequence as shown in SEQ ID NO.1, or a protein which has at least 80% of homology with the amino acid sequence as shown in SEQ ID NO.1 and has corresponding functions; the Argonaute protein specifically cleaves target nucleic acid under mediation of guide nucleic acid, the guide nucleic acid is guide DNA or guide RNA, and the target nucleic acid is a DNA target or an RNA target. Compared with the reported eukaryotic Argonaute protein derived from unicellular organisms, the Argonaute protein used in the invention is derived from rice, has greater application potential in the field of animal and plant gene editing, not only has RNase activity and activity of cutting a DNA target by utilizing guide RNA, but also can cut the DNA target by utilizing guide DNA, so that the scheme of the invention has good application prospect.

The invention discloses a method for ultrafast synthesizing pyrochlore type and perovskite type oxides based on Joule heat, which comprises the following steps of: firstly, obtaining a solid precursor by adopting a coprecipitation method, then quickly heating the solid precursor to 700-800 DEG C by using a Joule heat shock technology, cooling to room temperature, and circulating heating-cooling operation for a plurality of times to prepare a series of pyrochlore type (A2B2O7) and perovskite type (ABO3) oxides; the synthesis time is extremely short (lt; the method has the advantages of high yield (more than 2500g / h), high energy efficiency and potential to realize the purpose of high-flux synthesis, and has a good industrial production basis and a wide application prospect.

The invention discloses a preparation method and application of a functionalized hydrogen bond organic framework material induced by high-energy electron beam irradiation, and belongs to the technical field of new environmental detection materials.The preparation method comprises the steps that europium salt and a hydrogen bond organic framework material are added into an aqueous solution and stirred to be uniform, and the mixed solution is irradiated through high-energy electron beam irradiation to obtain the functionalized hydrogen bond organic framework material. And centrifugally cleaning the mixed solution subjected to high-energy electron beam irradiation with ethanol to obtain the high-energy electron beam irradiation induced functionalized hydrogen bond organic framework material. The preparation method of the functionalized hydrogen bond organic framework material induced by high-energy electron beam irradiation has the advantages of relatively simple operation, low cost, large-scale preparation and the like; the high-energy electron beam irradiation induced functionalized hydrogen bond organic framework material prepared by the invention has the characteristics of double emission peaks and self-calibration detection; the high-energy electron beam irradiation induced functionalized hydrogen bond organic framework material prepared by the invention shows stable optical properties; the high-energy electron beam irradiation induced functionalized hydrogen bond organic framework material prepared by the invention can better detect thorium in deionized water through a resonance energy transfer effect and an internal filtering effect.

The invention provides a preparation method for efficiently synthesizing hectorite, aiming at the defects that the existing hectorite synthesis technology is high in cost, complex in condition, time-consuming, energy-consuming and the like, process improvement is carried out, and the method comprises the following core steps: adding a magnesium carbonate and magnesium oxide mixed magnesium source, a specific silicon source and a single lithium source into deionized water at room temperature, and carrying out high-speed shearing to obtain uniform slurry; then adjusting the pH value by adopting sulfuric acid, hydrochloric acid, sodium carbonate or introducing a plurality of regulators such as carbon dioxide, and shearing; and performing high-temperature crystallization in a closed container, and sequentially performing filter pressing, washing, drying, grinding and sieving to obtain a finished product. According to the preparation method for efficiently synthesizing hectorite provided by the invention, various cheap raw materials are selected to replace high-purity chemicals, multi-link optimization is realized, the cost is reduced, the efficiency is increased, time is shortened, energy is saved, and the product is excellent in quality, high in purity, few in impurities, excellent in microstructure, dispersed, transparent, high in rheological property and huge in application potential in the fields of cosmetics, well drilling, coatings and the like; the method has breakthrough significance and wide prospects in industrial production and product application.

The invention relates to the technical field of preparation of Beta molecular sieves, and discloses a method for rapidly preparing a nano Beta molecular sieve by using a microwave synthesis method, which comprises the following steps: selecting proper silicon sources (such as silicon dioxide, white carbon black and the like) and aluminum sources (such as sodium metaaluminate, aluminum sulfate and the like), adding a template agent (such as tetraethylammonium hydroxide), an alkali source (such as sodium hydroxide) and deionized water, and carrying out microwave synthesis to obtain the nano Beta molecular sieve. Uniformly mixing and stirring according to a specific molar ratio to obtain initial gel; and crystallizing the gel, wherein a conventional hydrothermal method or a microwave heating method can be adopted. And after crystallization is completed, carrying out post-treatment such as filtration, washing, drying and high-temperature calcination on the product to finally obtain the Beta molecular sieve product. According to the method for rapidly preparing the nano Beta molecular sieve by utilizing the microwave synthesis method, provided by the invention, the synthesis steps are simplified, the crystallization time is remarkably shortened, the production efficiency is improved, the particle size of the nano Beta molecular sieve is effectively controlled, and a nano-scale product with smaller particle size and more uniform distribution is obtained.

The invention relates to the technical field of electrolyte, in particular to a thioether cross-linked solid polymer electrolyte membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: taking N, N-dimethylformamide, respectively adding 3, 6-dioxa-1, 8-octane dithiol and triglycidyl isocyanurate, and uniformly stirring to obtain a mixed solution; adding bis (trifluoromethylsulfonyl) imide lithium into the mixed solution, putting magnetons on a magnetic stirrer, and completely dissolving the magnetons to obtain a precursor solution; and pouring a proper amount of the precursor solution into a polytetrafluoroethylene mold, spreading, and carrying out cross-linking polymerization in a blast oven to form the film. The three-dimensional thioether cross-linked network structure has a large number of weakly coordinated thioether groups, dissociation of lithium salt can be promoted, a large number of free Li < + > is generated, the number of Li < + > is increased, meanwhile, the crystallinity of a polymer is remarkably reduced, the ionic conductivity is improved, the mechanical stability of a film can be improved, and the service life of a battery is effectively prolonged.

The invention belongs to the technical field of oil and gas field development, and specifically relates to a method for supercritical CO 2 CO2 for oil recovery 2 Thickener and preparation method thereof. A thickener for supercritical CO 2 CO2 for oil recovery 2 The preparation method of the thickener comprises: (1) mixing a maleic anhydride compound and a styrene compound, dissolving the mixture in water, introducing an inert gas and heating; (2) slowly dropping a mixed solution of a vinyl acetate compound and an initiator, cooling after the reaction is completed; (3) filtering, washing the solid phase with an anhydrous alcohol substance, drying and grinding to obtain a thickener product. The supercritical CO thickened by the thickener prepared by the present invention 2 , which can effectively slow down the viscous fingering phenomenon during displacement and improve CO 2 Sweep efficiency, thereby increasing oil recovery.

The invention relates to modified epoxy resin and a preparation method thereof.The preparation method comprises the steps that S1, nano aluminum nitride and mesoporous silica are subjected to an ultrasonic reaction in an organic solvent, then a reaction product is sequentially subjected to centrifugal separation, filtering, washing and drying, and a precursor AlN-coated SiO2 is obtained; s2, the precursor AlN-coated SiO2 and epoxy resin are mixed and then heated to a molten state, heat preservation is conducted in the molten state, modified epoxy resin is obtained, and the modified epoxy resin is used as a heat conduction epoxy plastic packaging material for semiconductor structure packaging. Nanometer aluminum nitride and mesoporous silica are subjected to an ultrasonic reaction to obtain a precursor AlN-coated SiO2, and the precursor AlN-coated SiO2 is doped with epoxy resin, so that the heat-conducting property of the modified epoxy resin is remarkably enhanced, the modified epoxy resin can provide an additional heat dissipation way when being applied to semiconductor structure packaging, the requirement of electronic packaging for a high-heat-conducting packaging material is met, and the service life of the high-heat-conducting packaging material is prolonged. Meanwhile, the modified epoxy resin has good thermal property and mechanical property.

The invention belongs to the field of materials, and particularly relates to a lightweight flame-retardant impact-resistant protective material and a preparation method thereof. According to the preparation method, based on lightweight design, phosphorus-containing organosilane functionalized hollow glass microspheres are compounded with shear hardening gels of different structures, so that the severe cold flow property of the shear hardening gels is improved, and meanwhile, the shear hardening gels are endowed with lightweight, flame-retardant and heat-resistant characteristics; meanwhile, the shear storage modulus and the energy absorption effect of shear hardening gel are improved by utilizing the particle enhancement effect and the hollow structure of the phosphorus-containing organosilane functionalized hollow glass microspheres, and the anti-impact flame-retardant composite material with the comprehensive properties of strain rate response, impact hardening, energy dissipation, flame retardance, heat insulation and the like is prepared.

The invention discloses a lithium zirconate material and a preparation method and application thereof. The preparation method comprises: weighing a lithium source material and a zirconium source material according to a stoichiometric ratio, placing the materials in a high-speed mixer, adding a sintering aid and mixing the materials uniformly to obtain a mixed material; subjecting the mixed material to a crystallization treatment, wherein the crystallization temperature is 750°C to 900°C and the crystallization time is 5 hours to 15 hours to obtain a precursor material; subjecting the precursor material to a crushing treatment to obtain a lithium zirconate material; wherein the particle size Dv50 of the zirconium source material is between 0.5 μm and 3 μm; the sintering aid is a fluoride; the rotation speed of the high-speed mixer is between 2000 rpm and 3500 rpm, and the mixing time is 5 min to 30 min.

The invention relates to the technical field of diamond synthesis, in particular to a colorless diamond and a preparation method thereof. The preparation method comprises the following steps: 1) distributing seed crystals on a catalyst sheet; (2) alternately assembling a plurality of graphite sheets, nitrogen removal sheets and the catalyst sheets after seed distribution, so that the nitrogen removal sheets are contained between any graphite sheet and any catalyst sheet to obtain a core column; 3) coating the core column to obtain a synthetic block; and 4) pressurizing and heating the synthetic block to obtain the colorless diamond. The colorless diamond synthesized through the preparation method is high in purity and can reach the D grade and the E grade, meanwhile, compared with a temperature difference method, the synthesis time is shortened, and the single yield is increased.

The invention belongs to the field of material synthesis, and particularly relates to a preparation method and application of a sulfydryl functionalized metal organic framework, the preparation method comprises the following steps: mixing a metal organic framework ZIF-8, cetyltrimethylammonium bromide, ethanol and ammonia water, stirring for 15-30 minutes, adding deionized water, tetraethoxysilane and 3-mercaptopropyltrimethoxysilane, continuously stirring for reaction for 6-8 hours, filtering, washing and drying to obtain the sulfydryl functionalized metal organic framework. And centrifuging, filtering, washing, centrifuging and filtering to obtain a head product, adding the head product into an ethanol solution of hydrochloric acid, reacting for 4-6 hours at the temperature of 80 DEG C, centrifuging, filtering, washing, centrifuging, filtering, drying and grinding to obtain the sulfydryl functionalized metal organic framework. The ZIF-8 is subjected to sulfydryl functionalization by adopting 3-mercaptopropyltrimethoxysilane, so that the utilization rate of active sites is effectively improved, the structure of a metal organic framework is not influenced, divalent cadmium ions can be quickly adsorbed within a short time, and an excellent photocatalytic degradation effect on organic dyes is also achieved.

The present application mainly relates to a kind of preparation of sulfur-rich amino acid protein CMd-copper nanoclusters and its detection mercury ion method, comprising: a) by prokaryotic expression obtains CMd protein, and the protein concentration of 5 mg / mL-25 mg / mL CMd protein solution is obtained by purification.b) CMd is reacted with reducing agent TCEP after opening protein disulfide bond.c) the protein solution after reduction is reacted with anhydrous copper sulfate, and preparation high fluorescence CMd-copper nanocluster.d) CMd-copper nanocluster is applied to detect heavy metal mercury ion.The application method can be synthesized under mild aqueous conditions by "one-step method" structure controllable, stable CMd-copper nanocluster, widens the raw material of copper nanocluster synthesized with protein as template, avoids the use of organic solvent and strong reducing agent, and reduces the cost and environmental burden brought by noble metal raw material, and also has higher selectivity to mercury ion.

The application belongs to the technical field of comprehensive utilization of waste lithium-ion power battery, and discloses a deep eutectic lithium supplement and a method for repairing and regenerating positive electrode material of waste lithium-ion battery, wherein the deep eutectic lithium supplement is prepared by taking a solid-state reducing organic acid as a hydrogen bond donor and a solid-state lithium source as a hydrogen bond acceptor, mixing the hydrogen bond donor and the hydrogen bond acceptor, and reacting to obtain a deep eutectic melting state system; and the deep eutectic lithium supplement can be used for repairing and regenerating the positive electrode material of the waste lithium-ion battery. The application can prepare a liquid-state deep eutectic lithium supplement by using a solid-state reducing acid and a solid-state lithium source, is green and friendly, can realize self-limiting lithium supplement without strict control of the lithium supplement amount, has low energy consumption in the lithium supplement process, can greatly reduce the cost, and can be used for repairing and regenerating the positive electrode material of the waste lithium-ion battery.

The application discloses a method for preparing halide oxide electrolyte by recycling lithium carbonate from retired batteries, and relates to the technical field of all-solid-state battery electrolyte materials, which directly synthesizes halide oxide solid electrolyte by mechanical chemical reaction of low-purity recycled lithium carbonate containing impurities and metal halide; the impurities in the low-purity lithium carbonate include at least one of Al, Fe, Ni, Co, Mn, F, P, Na and K. The application replaces traditional raw materials such as high-purity lithium oxide with low-cost crude recycled lithium carbonate, does not need deep purification, and significantly reduces the preparation cost; meanwhile, the application creatively converts the inherent impurity elements such as Al and F in the recycled lithium carbonate into functional components, so that a stable interface passivation layer containing Al2O3 and LiF is formed in situ at the positive electrode interface in the battery cycle process, the interface side reaction is effectively inhibited, and the electrochemical stability is improved. The method has the advantages of simple process, high reaction efficiency and easy scale production, and the prepared electrolyte has high ionic conductivity and excellent cycle stability.

The present invention provides an ultra-thin lamella reactor and a method for rapidly synthesizing submicron ZSM-5 zeolite thereof, belonging to the field of inorganic solid catalyst preparation. The ultra-thin lamella reactor of the present invention includes a reactor body, a reactor cover, a cross-shaped stainless steel spacer, and upper and lower stainless steel gaskets, and the reactor outer cover and the reactor body are tightly combined by threads. On this basis, illite is used as a raw material, and after pickling, an illite-based mineral polymer is obtained; using the depolymerized illite-based mineral polymer as a silicon source, an aluminum source and an alkali source are added under high temperature conditions, and by accurately controlling the silicon-aluminum ratio, a monolithic multi-stage pore submicron monolithic ZSM-5 zeolite molecular sieve catalyst can be quickly and successfully prepared. The present invention has the advantages of short synthesis cycle, low synthesis cost, low synthesis pollution, and high catalytic ability of synthetic products.

The invention relates to the technical field of preparation of multi-element layered double hydroxides, and particularly discloses a microwave-assisted LDHs organic functionalization method based on steel slag, which comprehensively uses ultrasonic treatment, microwave heating, magnetic field-assisted arrangement, temperature control phase change and laser fine regulation and control technologies, and aims to realize transformation from waste materials to high-performance materials. And meanwhile, the performance of the material can meet strict industrial application standards. The method comprises the following steps: firstly, pretreating steel slag by using an ultrasonic technology, destroying the structure of the steel slag through high-frequency vibration and a cavitation effect, and releasing valuable metal ions; then, the treated steel slag is mixed with an organosilane compound, rapid heating is conducted under the assistance of microwaves, and nucleation and organic modification of LDHs are promoted. Through the series of treatment, the efficiency of recycling valuable materials from the steel slag is remarkably improved, the functionality and application potential of the materials are remarkably improved, and the method is suitable for the fields of high-end electrons, catalysts, environment treatment and the like.

An oil-ice semi-solid phase coprecipitation process for synthesizing Prussian blue positive electrode materials belongs to the field of battery technology. The process is: completely dissolving an organic metal salt in an oil-based organic solvent with a density greater than that of water; completely dissolving a metal cyanate in water, and then freezing it into a plurality of ice cubes; wherein the amount of substance of the organic metal salt is the same as the amount of substance of the metal cyanate; adding a plurality of ice cubes to the oil-based solution at a certain time interval for a plurality of times until the two react completely; after the product is stored for a period of time, washing with a certain mass fraction of an organic solution soluble in water, centrifuging, and vacuum drying to obtain a Prussian blue positive electrode material. The Prussian blue positive electrode material provided by the present invention is prepared by an oil-ice coprecipitation synthesis method in a low-water environment, which is beneficial to reducing the crystal water content of the material. Compared with other synthesis processes, the positive electrode material provided by the present invention has very few defects, uniform particles, and excellent dispersion.

The invention provides a preparation method of micro-powder-free cobalt hydroxide, belongs to the technical field of lithium ion battery material preparation, and solves the problems that the content of micro powder is high and the synthesis process is difficult to control when the cobalt hydroxide is prepared in the prior art. The method comprises the following operation steps: preparing a solution, carrying out a synthetic reaction, aging, washing, drying and the like, and synthesizing a crimson beta-type cobalt hydroxide product with a product index D0 greater than or equal to 3 microns and regular morphology by controlling the temperature of a synthetic raw material solution at-5 to + 5 DEG C and controlling proper synthesis conditions. The cobalt hydroxide prepared by the method is regular in microstructure, does not contain fine micro-powder particles, and can be used for preparing cobaltosic oxide required by high-voltage lithium cobalt oxide.

The invention belongs to the technical field of metal organic framework materials, and discloses a metal organic framework material as well as a preparation method and application thereof. The chemical formula of the metal organic framework material is Cu-BDC-N2H3, and BDC represents terephthalic acid. The metal organic framework material disclosed by the invention has a low detection limit on formaldehyde. The metal organic framework material disclosed by the invention can be synthesized at normal temperature and normal pressure, and compared with most of traditional synthesis methods of MOF, the preparation method disclosed by the invention is milder in condition and easy to control. The synthesis time is greatly shortened, and only several minutes are needed.

The invention discloses a superfine full tailing filling paste water reducing agent as well as a preparation method and application thereof. The water reducing agent is prepared from the following raw material components in parts by weight: 60 to 120 parts of mother liquor and 0.08 to 0.12 part of hydroxypropyl methyl cellulose with the viscosity of 60000 MPa.s to 80000 MPa.s, and the mother liquor is prepared by taking ethylene glycol monovinyl polyethylene glycol ether as a macromonomer. The superfine full-tailing filling paste water reducing agent has the advantages of short synthesis time, low reaction temperature, good economic benefit, good applicability, good operability, capability of remarkably improving the compressive strength and the stability of a filling body and the like, is a novel water reducing agent with excellent performance, can be widely applied to superfine tailing filling, and can be used for preparing the superfine full-tailing filling paste water reducing agent under the action of the water reducing agent. Effective filling of the superfine tailings is achieved, the use value is high, the application prospect is good, and the method has important significance on cost reduction, efficiency improvement and green sustainable economic development.

Embodiments of the present disclosure disclose a digital tourism-based synthetic video derivation method, an electronic device and a readable medium. A specific implementation of the method includes: in response to determining that the video detection result represents no abnormality, controlling a video processor to perform cutout processing on user action video stream data, and performing fusion processing on the obtained user cutout video stream data and a preselected virtual background to obtain synthetic video stream data; in response to detecting that the theme rendering video stream data meets a preset target condition, controlling a video derivation device to generate a short chain of the theme rendering video stream data, and performing video derivation of the generated video short chain through a preset application channel to obtain a digital tourism synthetic video. The implementation shortens the time of video synthesis, and improves the processing capability and video quality of the derived synthetic video.

The invention discloses a carbon dot corrosion inhibitor with excellent corrosion inhibition and tracing performance, a preparation method and application, and relates to the technical field of corrosion inhibition of metal materials. The technical problems that in the prior art, a carbon dot corrosion inhibitor is prone to aggregation and instability in a high-temperature and strong-acid environment, and application is single are solved. The method comprises the following steps: firstly, taking citric acid and propargyl-PEG2-amine as raw materials, and dissolving the raw materials in deionized water to obtain a mixed solution; the mixed solution is placed in a high-pressure reaction kettle to be subjected to a hydrothermal reaction, and citric acid carbon dots modified by propargyl-PEG2-amine are prepared; sequentially carrying out centrifugation, dialysis and freeze drying treatment on the citric acid carbon dots modified by the propargyl-PEG2-amine, so as to obtain the citric acid carbon dots modified by the propargyl-PEG2-amine. The prepared carbon dot corrosion inhibitor can be used as a corrosion inhibition material in a high-temperature-resistant strong-acid environment, and can also be used for in-situ monitoring of dichromate ions in industrial wastewater and in-situ monitoring of iron ions and ferrous ions in underground water, surface water and drinking water so as to judge whether the content of the iron ions and the ferrous ions exceeds the standard or not.

The invention relates to the technical field of compound synthesis, in particular to a method for synthesizing 2-methyl-3-mercaptopropyl alkoxy silane by a thiourea method, which comprises the following steps: adding 2-methyl-3-chloropropyl alkoxy silane, thiourea, a solvent, a catalyst and a stabilizer into a reaction kettle, heating to 60-120 DEG C, and reacting for 12-72 hours to generate amidino salt; adding a certain amount of alkali at 30-100 DEG C, and keeping the temperature for 1-6 hours to obtain a crude product; and adding the crude product into a rectifying tower for rectification at the rectification pressure of 0-0.1 MP and the rectification temperature of 30-190 DEG C, reducing the pressure to 0-0.08 MP, recovering the solvent, and rectifying to obtain the 2-methyl-3-mercaptopropyl alkoxy silane. The mercaptopropyl functional group (-SH) synthesized by the method has high activity, the synthesis method is simple in process, short in synthesis time, high in synthesis efficiency and high in yield of finished products, and industrial mass production is facilitated.

The invention relates to the technical field of wastewater treatment, in particular to a heavy metal capturing agent and a preparation method and application thereof. The heavy metal capturing agent provided by the invention comprises a compound with a structure as shown in a formula (I) and ferrous sulfide, and in the formula (I), R1 is C1-C6 alkylene. The heavy metal capturing agent is formed by using a compound of double-active sulfur atoms and acrylamide groups with strong chelating property and ferrous sulfide, heavy metals are chelated by using the double-active sulfur atoms, and the chelated heavy metals are flocculated by using good flocculability of the acrylamide groups; meanwhile, ferrous sulfide is oxidized in water to form ferric hydroxide with a coagulation effect, heavy metal is further flocculated and settled, the settling rate and removal efficiency of the heavy metal are improved, meanwhile, hydroxyl free radicals generated by the ferrous sulfide can degrade organic complexing ligands, the complexing property of wastewater is reduced, and the heavy metal removal efficiency is improved. The complexing agent is prevented from being continuously complexed with subsequent heavy metal.

This invention discloses a magnetic nano-adsorbent material, which is a magnetic composite nanosphere modified with silane on its surface. The magnetic nano-adsorbent material has a core-shell structure, and the silane modification includes hydrophilic and lipophilic groups. The hydrophilic and lipophilic groups modified with silane exhibit excellent synergistic effects in improving the adsorption rate of drugs, especially tetrahydrocannabinol (THC-COOH), NKET, and 6-AM, demonstrating a significant improvement in adsorption efficiency. This allows for efficient and selective enrichment and purification of multiple illicit drugs in water. Furthermore, the magnetic nano-adsorbent material of this invention possesses strong magnetism, allowing for rapid separation of the adsorbent material using a magnet, achieving rapid solid-liquid separation, and enabling material recycling and regeneration. This invention employs a sol-gel method to prepare the magnetic nano-adsorbent material, which has simple synthesis conditions, a short one-pot synthesis time, and results in magnetic nano-adsorbent materials with good monodispersity and uniform particle size.

The invention discloses a preparation method and low-temperature application of a Te-doped tungsten niobium oxide / molybdenum niobium oxide heterojunction, and belongs to the technical field of secondary batteries. The preparation method specifically comprises the following steps: carrying out high-energy ball milling and alloying on WO3, Nb2O5 and Te2O5 to obtain amorphous Te-doped tungsten niobium oxide; the preparation method comprises the following steps: carrying out high-energy ball milling and alloying on MoO3, Nb2O5 and Te2O5 to obtain amorphous Te doped molybdenum niobium oxide; uniformly mixing and compacting the amorphous Te doped tungsten niobium oxide and the amorphous Te doped molybdenum niobium oxide, and performing discharge plasma sintering in an inert atmosphere to obtain the ceramic crystal Te doped tungsten niobium oxide / molybdenum niobium oxide heterojunction material. The Te-doped tungsten niobium oxide / molybdenum niobium oxide two-phase heterojunction material designed by the invention is relatively short in synthesis time, the synthesis period is shortened, the size of crystal grains is convenient to regulate and control, the crystallinity of the material is very good, the diffusion rate of lithium ions is greatly promoted by a heterojunction interface, the electron conductivity is improved by cooperating with Te doping, and the performance of the Te-doped tungsten niobium oxide / molybdenum niobium oxide two-phase heterojunction material is improved. The material can be used as a lithium ion negative electrode material with fast charging characteristic and good low-temperature performance.

The invention provides ZSM-48 molecular sieve raw powder, a rapid synthesis method thereof and an n-dodecane hydroisomerization reaction catalyst. The rapid synthesis method comprises the following steps: uniformly mixing a first silicon source, a first inorganic alkali source, a first template agent and water to obtain first gel; performing dynamic crystallization on the first gel, and obtaining nano crystal buds after the crystallization is completed; uniformly mixing a second silicon source, an aluminum source, a second inorganic alkali source, a second template agent and water to obtain second gel; and adding nano crystal buds into the second gel to form third gel, carrying out static crystallization on the third gel, and filtering, washing and drying the obtained product to obtain ZSM-48 molecular sieve raw powder. According to the rapid synthesis method provided by the invention, the nanocrystalline buds are added into the ZSM-48 synthesis gel mother liquor, and the synthesis time of the ZSM-48 molecular sieve can be greatly shortened by utilizing the structure guidance quality and the induction effect of the nanocrystalline buds; the prepared molecular sieve is high in crystallinity, and the dosage of the organic template agent is low.