84 results about "Hexadecyltrimethylammonium bromide" patented technology

The present invention relates to a method for preparing safe, non-toxic and property-excellent microcapsule wall material by using yeast cell. In the concrete, said invention relates to a method for culturing and processing yeast cell, and further relates to a microcapsule wall material prepared by using said method and biological microcapsule. Said method includes the following steps: making the yeast cell cultured under the proper condition be directly suspended in the autosoluble accelerating agent formed from Tween-80 or TritonX-100, hexadecyltrimethylammonium bromide, sodium lauryl sulfate, ethyl acetate, ethyl alcohol, hydrochloric acid, sodium hydroxide, potassium chloride and sodium chloride, making shaking treatment for 24-48h at 40-60deg.C, centrifugalizing, washing, freeze-drying so as to obtain the invented microcapsule wall material.

The present invention is a preparation method of gold nanorods whose length-to-diameter ratio can be adjusted in a large range. The strong reducing agent sodium borohydride reduces tetrachloroauric acid to obtain gold seed solution; the preparation of growth solution: prepare the mixed solution of hexadecyltrimethylammonium bromide, tetrachloroauric acid and silver nitrate, and the mol ratio of the three is 20:1:0.1~20:1:5, add crotonic acid solution to obtain a growth solution; growth of gold nanorods: inject gold seed solution into the growth solution, react for 6-12 hours, and obtain gold nanorods. The invention adopts crotonic acid as growth solution modifier, and solves the biological toxicity and biological modification problems caused by CTAB. The yield of the short-length-diameter ratio gold nanorods prepared can be as high as about 90%, the size distribution is narrow, and the length-diameter ratio is about 1.92. The aspect ratio of the prepared gold nanorods can be adjusted in a wide range from 1.9 to 7.5.

The invention discloses a modified zeolite organic matter composite agent for synchronous nitrogen and phosphorus removal of sewage, and a preparation method, application and an application method of the modified zeolite organic matter composite agent, belonging to the field of waste water treatment. According to the invention, a mixed solution of hexadecyltrimethylammonium bromide and lanthanum chloride is used as a modifying solution to be used for modifying zeolite, and then the modified zeolite is mixed with polyaluminum ferric chloride (PAFC) in different ratios to prepare the modified zeolite organic matter composite agent. The modified zeolite organic matter composite agent is applied to biochemistry tail water in a sewage treatment plant, the ammonia nitrogen treatment effect is relatively good, and nitrate nitrogen and total phosphorus treatment effects are improved greatly. The composite agent has the advantages of being easy to operate, better than a coagulant in settling property, good in treatment effect, wide in application range and capable of removing nitrate nitrogen and ammonia nitrogen simultaneously; in the practical engineering operation, the use amount of the composite agent can be changed flexibly to realize an ideal treatment effect, nitrogen and phosphorus contaminants in water can be removed synchronously, and particularly a very good purifying effect on low-concentration nitrogen and phosphorus in the biochemistry tail water is realized.

A cosmetic product (1) for conditioning hair, the cosmetic product having the form of a solid and comprising at least one hair conditioning ingredient. Cocoa butter, cetearyl alcohol (and) sodium lauryl sulfate and glyceryl stearate (and) PEG 100 stearate are used to form the solid and the at least one hair conditioning ingredient is a known hair conditioning ingredient, such as lanolin and cetrimonium bromide. The solid cosmetic product may combined in a bar or a small shape (3) with shampoo (2).

The invention discloses a preparation method of a mesoporous print material capable of selectively adsorbing cadmium ions and belongs to the field of chemistry. The preparation method comprises the following steps: 1, dropwise adding tetraethoxysilane to a mixed solution of sodium hydroxide and cetrimonium bromide for reaction, and then processing to obtain a MCM-41 material; 2, washing the MCM-41 material; 3, adding a methanol solution to Cd(NO3)2.4H2O; 4, then adding 3-[2-(2-aminoethylamino) ethylamino] propyl-thimethoxy silane (AAAPTS) for reaction, then adding purified MCM-41, and then adding epichlorohydrin and reacting while stirring; 5, soaking for 4 hours while stirring to remove Cd<2+>; and 6, washing and drying to obtain the mesoporous print material. The mesoporous print material obtained according to the method is non-toxic and harmless, is large in adsorption capacity and strong in environmental protection property, is not soluble in water, and can be repeatedly used.

The invention relates to a preparation method of a composite gel material which has excellent adsorption capacity of heavy metal ions, such as lead, cadmium, nickel, chromium, and molybdenum, and a phenolic compound, such as phenol, methylphenol, and xylenol, at the same time, is high in adsorption quantity and efficiency, and can be reused after washing, and relates to a product of the composite gel material. Attapulgite is subjected to water washing and acid washing, and is modified through a sodium chloride solution, hexadecyltrimethylammonium bromide, and a humic acid to prepare humic-acid-modified attapulgite. The humic-acid-modified attapulgite and acrylamide hydrogel are compounded to prepare the product of the composite gel material. The preparation method of adsorption macromolecule hydrogel is simple in process and low in cost, does not require any special equipment, and is easy for industrial application. The strength of the prepared gel is greatly improved.

The invention relates to a preparation method for a novel magnetic molecular sieve adsorbent material which is used for removing antibiotic pollutants in water treatment, has good adsorption performance and can be easily separated by using a magnetic separation method. The preparation method comprises the following steps: mixing soluble manganese salt and ferric salt according to a mol ratio of 1: 2, adding alkali to neutralize an obtained mixture and then carrying out microwave-assisted hydro-thermal synthesis, crystallization, magnetic field separating, rinsing and drying so as to obtain a ferromanganese magnetic spinel material; adding prepared magnetic spinel into a mixed solution consisting of cetyltrimethylammonium bromide, ethanol, ammonia water and deionized water, carrying out ultrasonic and vigorous stirring, adding ethyl orthosilicate, then continuing stirring for a reaction and then successively carrying out pumping filtration, rinsing with pure water, drying under vacuum, grinding and calcining under the protection of nitrogen so as to prepare the novel magnetic molecular sieve adsorbent material. The magnetic molecular sieve adsorbent material has the characteristics of rapid adsorption, high efficiency magnetic separation and a high adsorption removal rate when used as an adsorbent for removal of tetracycline antibiotic pollutants like terramycin and aureomycin in waste water and is suitable for popularization and application.

The invention provides a composite nano-material with nano-particles wrapped by meso-porous silica, and a preparation method and an application thereof. The preparation method comprises the followingsteps: firstly, dispersing nano-particles into an ethanol-water solution, adding ammonium hydroxide to adjust the pH value, dropwise adding an ethanol-water solution of hexadecyltrimethylammonium bromide under the ultrasonic action, continuing ultrasonic treatment, dropwise adding tetraethoxysilane, and purifying to obtain the composite nano material which takes meso-porous silica as a shell and nano-particles as a core and is uniform, stable and controllable in size. Binuclear or trinuclear nanoparticles of different types / functions can be embedded into the same meso-porous silica shell to realize multi-core wrapping, the method is universal, can be expanded to wrapping of more different nano-particles, is green and efficient in preparation process, can be carried out at room temperature,and is hydrophilic in used solvent, low in cost and simple in process, the particle size of the obtained composite nano-material is as low as 50 nm, and the composite nano-material with different sizes can be obtained by adjusting the proportion of used reagents.

The invention discloses a method for preparing hydrophobic white carbon black. The method comprises the steps of drying precipitated white carbon black to constant weight, then mixing with a modifier solution, adjusting a pH value to 8; and at a temperature of 30-90 DEG C, stirring for a reaction for 20-100 min with a stirring speed of 250-450 rpm, then filtering, and drying to obtain the hydrophobic white carbon black. The modifier is selected from one or more of cetyltrimethylammonium chloride, hexadecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, and dodecyltrimethylammonium bromide. The activation degree of the modified white carbon black is obviously improved and can reach 95% or more, and the modified white carbon black is the hydrophobic white carbon black. The method of the invention is simple in process, has the solvent with cleanliness and no pollution; and the modified white carbon black has the hydrophobic property improved significantly, and thereby being beneficial to improving compatibility when adding into rubber and plastics.

The invention relates to an enzyme imitation type water treatment agent for degrading polycycic / heterocyclic aromatic hydrocarbon, and a preparation method for the enzyme imitation type water treatment agent. The technical scheme comprises the following steps of: uniformly mixing bentonite and deionized water in a mass ratio of 1:(30-60), standing, and taking an intermediate layer to obtain purified bentonite; mixing the purified bentonite and NaCl in a mass ratio of 1:(1-2.5), and stirring for 30 to 60 minutes to obtain sodium-activated bentonite; adding 1.5 to 5.0 weight percent of sodium-activated bentonite slurry into an aluminum crosslinker until the volume ratio of the sodium-activated bentonite slurry to the aluminum crosslinker is (4-7):1 to obtain aluminum pillared bentonite; andmixing aluminum pillared bentonite, deionized water, and hexadecyltrimethylammonium bromide in a mass ratio of 1:(40-100):(0.1-0.4), adding ferrous sulfate and ferric trichloride until the molar ratio of Fe<2+> to Fe<3+> is 1:(1.5-3), introducing nitrogen, stirring at the temperature of between 60 and 80 DEG C for 10 and 15 minutes, and adjusting pH to be 9 to 12 to obtain the enzyme imitation type water treatment agent for degrading polycycic / heterocyclic aromatic hydrocarbon. The enzyme imitation type water treatment agent has the advantages of high removal efficiency, low cost and environment-friendliness, and can be recycled.

The invention discloses a preparation method for an organic / inorganic hybrid quartz capillary monolithic column modified by single-chain DNA nucleic acid aptamer. The preparation method is performed successively through the following steps: (1) performing activation processing on the internal surface of a hollow quartz capillary; (2) weighing CTAB (hexadecyltrimethylammonium bromide) and putting into a centrifugation tube, respectively adding TEOS (tetraethyl orthosilicate), APTES (3-aminopropyltriethoxysilane), anhydrous ethanol and the like, and performing multi-step processing, so as to obtain an organic / inorganic hybrid monolithic column; (3) subsequently using methanol and pure water for flushing; (4) activating, reacting at room temperature for a period, and using a PBS (phosphate buffer saline) for repeated flushing; and (5) injecting an ochratoxin A aptamer solution into the organic / inorganic hybrid monolithic column, and performing circular reaction at room temperature and storing at a low temperature, so as to obtain the organic / inorganic hybrid quartz capillary monolithic column modified by single-chain DNA nucleic acid aptamer. The product is applied to high-selectivity separation and enrichment of trace quantity or ultra trace quantity of ochratoxin, aflatoxin and other substances in complex biological samples and food.

The invention relates to a molecular biological method for identifying the seedling stage of a nicotine transformation tobacco plant. The method comprises the following main steps of: extracting the genomic DNA from a fresh leave sample of the plant in the seedling stage by a CTAB (hexadecyltrimethylammonium bromide) method, performing PCR (polymerase chain reaction) using the genomic DNA as an amplification template in combination with specific primers, then enabling the PCR products to be subjected to agarose gel electrophoresis, observing and reading a molecular marker spectrum in the gel imaging system, and subsequently comparing the molecular marker spectrum with the target spectrum to determine the transformation characteristics of the sample. The method in the invention is free from environmental factor influences, is in no need of artificial chemistry to induce nicotine to transform, and is capable of sampling operation during the seedling stage to bring forward the identification and screening of a transformation plant ahead of tobacco plant implantation, thus greatly saving time, being accurate and efficient, simple and convenient to operate, easy to popularize, and applicable to purification of tobacco parent seeds and identification of nicotine transformation traits as well as identification and removal of nicotine transformation plants of other tobacco types.

The invention relates to a method for preparing diantimony trioxide nano-particles by a mechanochemical modification technology. The method comprises the following steps: (1) mixing and ball-milling micrometer diantimony trioxide, small hard alloy steel balls and distilled water to obtain nano-Sb2O3 particles; (2) washing, drying and sieving the nano-Sb2O3 particles to obtain a nano-Sb2O3 sample;(3) mixing the nano-Sb2O3 sample, small hard alloy steel balls and distilled water, adjusting the pH value, adding hexadecyltrimethylammonium bromide, carrying out ball milling, and cleaning, filtering and drying the obtained mixture to obtain cationic surfactant CTAB modified nano-Sb2O3 particles; (4) adding the cationic surfactant CTAB modified nano-Sb2O3 particles into an ethanol-water solution, and carrying out ultrasonic dispersion so as to obtain cationic surfactant CTAB modified nano-Sb2O3 particles; and (5) mixing and ball-milling the cationic surfactant CTAB modified nano-Sb2O3 particles, a silane coupling agent KH580, small hard alloy steel balls and anhydrous ethanol, and cleaning, filtering and drying the obtained mixture to obtain CTAB and KH580 compounded modified nano-Sb2O3.The method has the advantages of simple process, high yield, high operability, and easiness in realization of industrial production.

The invention belongs to the preparing field of adsorption material and particularly relates a preparing method of a composite and modified expanded graphite. The method comprises the following steps of 1, mixing potassium permanganate which is grinded into comminuted status evenly with natural flake graphite, adding mixed solution of nitric acid and phosphoric acid, and heating at 50 DEG C until yellow smog isn't generated any more to obtain expanded graphite; 2, preparing hexadecyltrimethylammonium bromide - potassium bromid mixed modifier; 3, using the modifier obtained in the step 2 to conduct modification for expandable graphite obtained in the step 1to obtain the composite and modified expanded graphite. The preparing method of the composite and modified expanded graphite is simple to operate, has relatively big hole diameter, quick adsorption rate for acid brilliant blue dye, high balance removal rate, meanwhile, unit adsorbing capacity is high, and adsorption reaction for the brilliant blue dye conforms to secondary dynamic absorption model.

The invention discloses a bio-based high-breathability antibacterial fabric and a preparation method thereof. The antibacterial fabric comprises a base cloth and an outer-layer cloth, and the base cloth and the outer-layer cloth are bonded through a modified hot melt adhesive; the modified hot melt adhesive comprises a hot melt adhesive, modified silicon dioxide, an additive A and an additive B; the modified silicon dioxide is mainly prepared from hexadecyltrimethylammonium bromide, tetraethoxysilane, mercaptopropyltrimethoxysilane, methylbenzene and hydrogen peroxide; the additive A is mainlyprepared from silver nitrate, glucose and sodium chloride; and the additive B is mainly prepared from chitosan, 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, N-hydroxysuccinimide and lysine. According to the bio-based high-breathability antibacterial fabric and the preparation method thereof, the process design is reasonable, the component proportion is proper, and the prepared antibacterial fabric has excellent antibacterial performance and breathability and has high practicability.

The invention discloses a preparation method of a Sn-doped ZnO nanocrystalline, which is used for solving the technical problem that the preparation temperature is high in the traditional preparation method for preparing the metal-Sn-doped ZnO. In a technical scheme, the preparation method comprises the following steps: mixing and grinding Zn(NO3)2.6H2O, SnCl4.5H2O and NaOH, adding a cationic surfactant, namely, hexadecyltrimethylammonium bromide, continuing grinding, and washing ground materials with deionized water and absolute alcohol before drying until no impurity ions exist; and drying and grinding obtained white powder, calcining in a muffle furnace to obtain the metal-Sn-doped ZnO. In the preparation method disclosed by the invention, the preparation temperature of the metal-Sn-doped ZnO is decreased to 500-600 DEG C from 1280 DEG C in the prior art.

The invention relates to a preparation method of a porous composite material for reducing harmful substances in flue gas. The preparation method comprises the following steps: allowing reactions to take place among tetraethylorthosilicate, Fe(NO3)3.9H2O, Ce(NO3)3.6H2O, NaOH, hexadecyltrimethylammonium bromide, sodium laurate and water, and calcining to obtain the porous composite material. The porous composite material can significantly reduce polycyclic aromatics, CO, crotonaldehyde and other harmful substances in flue gas.

The present invention relates to an air refreshing agent with a mosquito repelling effect. The air refreshing agent comprises, by weight, 5-10% of a polyacrylic acid emulsifying agent, 5-10% of polyhexamethyleneguanidine, 5-10% of cetrimonium bromide, 10-20% of benzalkonium chloride, 10-20% of ethanol, 2-8% of a mosquito repelling drug, 2-8% of a non-ionic surfactant, 0.2-0.5% of a preservative, 2-10% of pearl particles, and the balance of deionized water. According to the air refreshing agent adopting the technical scheme, polyhexamethyleneguanidine, cetrimonium bromide, benzalkonium chloride and ethanol have disinfection and sterilization effects so as to effectively control bacterial content in an environment around the air refreshing agent, such that mosquito breeding can be reduced; and the mosquito repelling liquid drug has a mosquito repelling effect, and does not produce harm on human body.

The invention provides a corona-resistant coating for a cable and a preparation method of the corona-resistant coating, and particularly relates to the technical field of cable materials. The coatingis prepared from the following raw materials: acrylic resin, ethanol, N,N'-diisopropylcarbodiimide, perfluoropolyether, resina draconis extract, mica, graphite type boron nitride, benzylidene-bis(triphenylphosphine)ruthenium dichloride, porphyrin compound, zirconium oxide and hexadecyltrimethylammonium bromide. The preparation method comprises the following steps: a, primary catalytic reaction; b,stabilizing treatment; c, secondary catalytic reaction; d, charging of nitrogen; and e, pre-coordination treatment. The coating disclosed by the invention can be well attached to a wire, does not generate air intermittence, has an air isolation effect and a highly conjugated structure, can play a role in preventing corona from multiple aspects, has corona resistance of 250 minutes, is not easy tocrack, has good insulativity and is not easy to break down. The method is stable in process, controllable in parameter, easy to repeat and suitable for large-scale production.

The invention discloses a K-g-C3N4 / BiOBr photocatalysis material, and a preparation method and an application thereof. The composite photocatalysis material is characterized in that the K-g-C3N4 / BiOBrphotocatalysis material is prepared through thermal polycondensation and in-situ growth methods by using bismuth nitrate pentahydrate, hexadecyltrimethylammonium bromide, potassium hydroxide and ureaas main raw materials. The photocatalysis activity of the prepared K-g-C3N4 / BiOBr catalyst is tested by using a xenon lamp as a simulated light source and rhodamine B as a simulated pollutant. The composite photocatalyst effectively inhibits photo-induced electron-hole compounding through the doping of alkali metal and the construction of heterojunction, so that the photocatalysis degradation efficiency is improved. The catalyst has the advantages of simplicity in preparation, low cost, no toxicity and the like, and can be widely applied to the fields of sewage treatment and the like, and thepreparation method of the composite photocatalyst provides a new idea for the preparation of a novel photocatalyst, and has a wide prospect in the field of development of new energy by efficiently utilizing solar energy.

The invention discloses a beta-Ni(OH)2 electrode prepared by a solvothermal method as well as a method and application of the beta-Ni(OH)2 electrode. Ni(OH)2 is vertically arranged on a foamed nickelsheet substrate by adopting a solvothermal method, taking a foamed nickel sheet as a substrate, taking an ethanol solution of vanadium chloride and urea as a vanadium source and taking hexadecyltrimethylammonium bromide as a morphology regulating agent, high-density and large-surface-area catalytic site activity is exposed, the electron transfer rate is increased, the electro-catalytic performanceis improved, the foamed nickel sheet substrate is not only beneficial to electron transmission, nickel comes from an original position, generated Ni(OH)2 is tightly connected with foamed nickel, thestructure is more stable, and the prepared beta-Ni(OH)2 electrode has excellent electro-catalytic performance, and when the beta-Ni(OH)2 electrode is applied to a water electrolysis catalytic reactionunder an alkaline condition, the electro-catalytic hydrogen and oxygen production performance of electrolyzed water is improved.

The invention relates to a compound neomycin sulfate composition for treating pet abscess and a preparation method of the compound neomycin sulfate composition. The composition is prepared by uniformly mixing the following components by weight: 1-3 parts of neomycin sulfate, 3-5 parts of erythromycin thiocyanate, 1-2 parts of trimethoprim lactate, 1-3 parts of cetrimonium bromide, 3-5 parts of piperitol, 50-70 parts of liquid paraffin, 7-9 parts of glycerol, 0.4 part of ethylparaben, 1-3 parts of essence, 80-113 parts of distilled water and the like. The compound neomycin sulfate composition has the beneficial effects that the formula is reasonable, preparation is simple, curative effects are very remarkable, and furthermore, clinical application show that the compound neomycin sulfate composition has special effect for treating pet abscess.

The invention discloses a preparation method of a lithium-sulfur battery electrode material, which comprises the following steps: adding hexadecyltrimethylammonium bromide into absolute methanol, carrying out ultrasonic treatment, adding carbon nanotubes and cobalt nitrate hexahydrate, and carrying out ultrasonic treatment to obtain a solution A; adding 2-methylimidazole into an absolute methanolsolution, carrying out ultrasonic treatment to obtain a transparent solution B, adding the solution A into the solution B, conducting stirring, centrifuging, filtering, and drying to obtain a productI; adding the product I into an absolute ethyl alcohol solution, carrying out ultrasonic stirring, then adding nickel nitrate hexahydrate, carrying out ultrasonic treatment, and then conducting stirring, filtering and drying to obtain a product II; putting the product II into a tubular furnace, and conducting calcining for 2.5-3 hours in a nitrogen atmosphere to obtain a product NiCo(O) / CNTs; andadding NiCo(O) / CNTs into a high-pressure reaction kettle with a polytetrafluoroethylene lining, then adding sublimed sulfur, carrying out high-temperature reaction, and conducting cooling to obtain the material Ni-Co(O) / CNTs / S. The electrode material Ni-Co(O) / CNTs / S provided by the invention has excellent rate capability, and has small discharge capacity loss after 200 cycles.

The invention discloses a method for preparing a polyaluminum sulfatochloride water treatment agent, which comprises the following steps: reacting 10-15 parts by weight of aluminum hydroxide and 15-20parts by weight of hydrochloric acid at high temperature and high pressure for 2-4 hours; adding 10-15 parts of aluminum sulfate liquid and 15-20 parts of water into aluminum chloride liquid, conducting reaction for 1-2 h, then adding 0.01-0.05 part of polyethylene glycol and 0.01-0.05 part of hexadecyltrimethylammonium bromide, and conducting reaction for 1-2 h, so as to obtain an aluminum sulfate and aluminum chloride mixed solution; and adding 0.05-0.10 part of chitosan, conducting heating and stirring for 30-60 minutes, and carrying out filter pressing, drying and packaging to obtain thepolyaluminium sulfatochloride water treatment agent. The polyaluminium sulfatochloride water treatment agent prepared by the invention has a large specific surface area and good adsorption performance, improves the flocculation performance and flocculation effect, has good stability, can quickly remove pollutants such as turbidity, chroma, heavy metal ions, COD and the like, and has a wide application prospect in sewage or drinking water treatment.

The invention discloses a Pt-Ni alloy nanomaterial adopting a network structure and a preparation method thereof, and relates to the alloy nanomaterial and the preparation method thereof, and solves the problems that the preparation process of the existing Pt-based alloy nanomaterial is relatively complicated, which is not conducive to large-scale preparation of a catalyst, and the prepared Pt-based alloy nanomaterial has low porosity and poor stability. The Pt-Ni alloy nanomaterial adopting the network structure is a sponge-like three-dimensional net structure formed by interconnecting Pt-Nialloy nanoparticles. The preparation method comprises the following steps: 1, firstly, mixing hexadecyltrimethylammonium bromide, chloroform, ultrapure water and isopropanol to obtain a sol micelle, and then sequentially adding chloroplatinic acid and nickel acetate into the sol micelle to obtain a mixed solution; 2, irradiating the mixed solution to obtain an irradiated solution; 3, centrifuging,washing and drying the irradiated solution to obtain the Pt-Ni alloy nanomaterial adopting the network structure.

The invention discloses a method for preparing a neonicotinoid pesticide core-shell mesoporous surface molecularly imprinted polymer by a one-step method, which is characterized by comprising the following steps: preparing silicon dioxide microspheres; carrying out vinyl functionalized modification on the silicon dioxide microspheres; mixing and stirring a template molecule neonicotinoid pesticideand a functional monomer in acetonitrile for prepolymerization, adding hexadecyltrimethylammonium bromide in the synthesis process of the molecularly imprinted polymer, adding an initiator, a cross-linking agent and a silanization reagent, and removing hexadecyltrimethylammonium bromide and the template molecule neonicotinoid pesticide to obtain the core-shell mesoporous surface molecularly imprinted polymer. The core-shell mesoporous surface molecularly imprinted polymer capable of specifically recognizing and adsorbing the neonicotinoid pesticide is prepared through a one-step method, on one hand, mesopores are beneficial to transmission of a template and combination of inner-layer imprinting sites, and the imprinting effect and the mass transfer rate are increased; and on the other hand, the preparation time of the imprinted polymer can be shortened, the requirement of rapid detection is met, and the imprinted polymer is used for rapid detection.

The invention provides a preparation method of Zn2V2O6 nanowires, which comprises the following steps: weighing vanadium pentoxide, slowly adding the vanadium pentoxide into a hydrogen peroxide solution, and conducting uniform mixing to obtain a first mixed solution; weighing polyethylene glycol, adding the polyethylene glycol into the first mixed solution, and conducting stirring to obtain a second mixed solution; adding deionized water into the second mixed solution, conducting stirring to obtain a third mixed solution, heating the third mixed solution to carry out hydrothermal reaction, andconducting cooling to room temperature after the reaction is finished to obtain a first solid product; carrying out centrifugal separation and drying on the first solid product to obtain H2V3O8 nanowires; weighing H2V3O8 nanowires and basic zinc carbonate, adding the H2V3O8 nanowires and the basic zinc carbonate into deionized water, and conducting heating to obtain a fourth mixed solution; weighing hexadecyltrimethylammonium bromide, adding the hexadecyltrimethylammonium bromide into the fourth mixed solution, and conducting stirring and heating to obtain a second solid product; and washing,drying and sintering the second solid product to obtain the Zn2V2O6 nanowire.

The invention discloses a carbon dot-based fluorescent silicon dioxide nanosphere and a preparation method thereof. The preparation method comprises the following steps: (1) synthesizing silanized carbon dots by utilizing citric acid and a silanization reagent; (2) stirring triethanolamine, hexadecyltrimethylammonium bromide and sodium salicylate in water for a certain period of time, injecting tetraethyl orthosilicate, performing continuous stirring for a certain period of time, and washing off a template by using hydrochloric acid to obtain a dendritic silicon dioxide nanosphere; and (3) uniformly mixing the silanized carbon dots and the dendritic silicon dioxide nanosphere in water or ethanol according to a certain ratio, and performing catalysis with ammonia water to obtain the carbondot-based fluorescent silicon dioxide nanosphere. The preparation method has the characteristics of simple process, low cost and the like, and the prepared fluorescent nanosphere has the advantages ofuniform size, uniformity in carbon dot doping, high fluorescence property and high stability.

The invention provides a chromatographic filler, and a preparation method and application thereof. The chromatographic filler is prepared from a polyether template, a hexadecyltrimethylammonium bromide template, tetraethoxysilane and 1, 4-bis (triethoxysilyl)benzene. According to the chromatographic filler, a specific part of the polyether template is selected to be matched with a specific part of the hexadecyltrimethylammonium bromide template to serve as a composite template; the combination of tetraethoxysilane and 1, 4-bis(triethoxysilyl)benzene is selected as a silicon source precursor, so that the prepared chromatographic filler spherical particles are smooth in surface and relatively uniform in particle size, have high specific surface area and highly ordered mesoporous channels, and can accelerate mass transfer when being applied to chromatography; and the chromatographic filler also has excellent alkali resistance and important research value.