88 results about "Nano complex" patented technology

The present invention relates to a heat sink sheet including an adhesive containing a carbon nano-complex and having good heat conductivity. The adhesive having good heat conductivity is coated on a graphite sheet to improve heat conductivity, and an existing adhesive process and adhesive coating process are combined into a single process to manufacture a heat sink sheet, thereby providing a heat sink sheet having improved heat conductivity so as to contribute to cost reduction and increased yield.

The invention discloses a copper ferrite-graphene nano complex and a preparation method of the copper ferrite-graphene nano complex. The preparation method comprises the steps of: ultrasonically dispersing graphite oxide in ethanol, adding ferric nitrate and copper nitrate to ethanol, stirring for dissolving, then mixing two systems, transferring the mixed system to a hydrothermal kettle for reaction, after reaction is finished, centrifugally separating the product, washing and drying to obtain the copper ferrite-graphene nano complex. According to the invention, copper ferrite nano sheets with uniform size and uniform dispersing are prepared with graphene as a supporting material by a hydrothermal synthesis method. The copper ferrite-graphene nano complex prepared by the preparation method disclosed by the invention has better application prospects and economic benefits in the aspects of sewage treatment and lithium ion cells.

The invention discloses a preparation method of a Ru-Pd / TiO2 nanotube complex photocatalyst and the application thereof, and belongs to the technical field of environment pollution control. When the photocatalyst is prepared, an electrochemical oxidation reaction is performed under the action of hydrofluoric acid with the concentration of 0.2wt percent so as to prepare a TiO2 nanotube electrode firstly, the pipe diameter of a nanotube is about 100 nm, and the thickness of a pipe wall is about 20 nm. Then an impregnating electrodeposition method is adopted to prepare the Ru-Pd / TiO2 nano complex photocatalyst. The method for preparing the complex photocatalyst has the advantages of simple synthesis, stable property, synthesis process belonging to the green chemistry and the like. The composition of Ru and Pd improves the separating efficiency of photoinduced electrons-hole pairs of the TiO2 nanotube electrode, further improves the photocatalytic reduction degradation efficiency of organic pollutants, and has very high utility value and a good application prospect.

A thermoelectric material including: a thermoelectric matrix; and a plurality of metal nanoparticles disposed in the thermoelectric matrix, wherein a difference between a work function of thermoelectric matrix and a work function of a metal particle of the metal nanoparticles is about −1.0 electron volt to about 1.0 electron volt.

The present invention relates to environment-friendly, synergistic carbon-nano complex fertilizers comprising carbon-containing-fertilizer. The complex fertilizers comprise carbon nanomaterials, which have the particle size in a range from 5 nm to 200 nm and particularly 5 nm to 100 nm, and optional ammonia stabilizer or nitric acid reductase inhibitor. The weight ratio of the carbonic fertilizer and the carbon nanomaterials is in a range from 100:0.1 to 100:1. The weight ratio of the carbon-containing-fertilizer and the ammonia stabilizer or nitric acid reductase inhibitor is in a range from 100:0.1 to 100:1. Said carbon-containing-fertilizer is ammonium bicarbonate, urea, or a combination thereof. The complex fertilizers show synergistic emission reduction. The present invention also relates to compound fertilizers, which comprise said complex fertilizer and organic fertilizer.

The invention belongs to the technical fields of preparation and applications of nano-carriers, and in particular discloses a preparation method and an application of a multifunctional membrane-controlled targeting nano-carrier integrating tracing and targeted drug delivery effects. With nano mesoporous silica (MSN) as a drug 'warehouse', a positively charged high molecular material and a negatively charged high molecular material as preparation materials of a gating membrane, and adriamycin (DOX), cis-platinum, imatinib, taxol and the like as model anti-cancer drugs, research contents mainlyinclude optimization and improvement of natural materials, construction and process optimization of the gating membrane, structural characterization of a nano complex, drug release kinetic characteristics of drug molecules under the control of the gating membrane, and the like. Meanwhile, in the combination with the tracing imaging function of a fluorescent quantum dot, drug delivery behaviors andanti-tumor effectiveness of the membrane-controlled nano drug delivery system undergo preliminary evaluation through in-vitro experiments. Based upon research results, references are provided for thedesign and preparation of the novel membrane-controlled nano drug delivery system.

The invention discloses a kind of denatured layer-shape silicate, the nano polyethene compounded of the layer-shape silicate and the polythene, and the method of preparation. The mentioned denatured layer-shape silicate is the layer-shaped silicate of 60-90 wt%, and after processed by the processing agent of 1-40 wt%, the layer-shape silicate and the processing agent make the ion-exchange reaction or the surface chemical reaction, and when the polymer is inserted in the layer of the layer-shape silicate, the polyethene-layer-shape silicate nano complex materials come into being; the mentioned polythene-layer-shape silicate nano complex materials includes: the polyethene of 50-98 wt%, the denatured layer-shape silicate of 1-40 wt% and the assistant agent of 1-30 wt%; the nano polythene compounded of the denatured layer-shape silicate.

The invention discloses a metal polyphenol collagen membrane material as well as a preparation method and application thereof. The metal polyphenol collagen membrane material is a hydrogel material and comprises collagen and a nano complex loaded on a porous structure of the collagen, and the nano complex is obtained by chelating metal ions and polyphenol. The metal polyphenol collagen membrane material has good pH responsiveness, has antibacterial and hemostatic effects at the same time under response conditions, has an excellent skin wound repairing effect, and can be applied to skin wound repairing materials.

The invention discloses a novel mesoporous silicon sphere co-loaded medicine nano-complex and a preparation method thereof. The novel mesoporous silicon sphere co-loaded medicine nano-complex is Ce6@MMSN / DOX / Ko143@PAsp-b-PEG-FA; the preparation method comprises the following steps: selecting TEOS (Tetraethyl Orthosilicate) as a silicon source, CTAB (Cetyltrimethyl Ammonium Bromide) as a template agent and n-hexane as a pore expanding agent and synthesizing mesoporous silicon dioxide nanoparticles with a double-pore-channel core-shell structure; carrying out amination modification on the mesoporous silicon dioxide nanoparticles; synthesizing Fe3O4 nanoparticles by adopting an LSS (Liquid-Solid-Solution) phase transfer method and ligand exchange reaction; modifying and embedding superparamagnetic iron oxide nanoparticles on the surface of aminated MSN through nucleophilic substitution, so as to construct magnetic mesoporous silicon dioxide nanoparticles; taking DCC (Dicyclollexyl Carbodiimide) as a condensation agent and covalently binding a photosensitizer Ce6 through amidation; meanwhile, loading a BCRP (Breast Cancer Resistance Protein) inhibitor Ko143; then crossly linking a copolymer FA-PEG-b-PAsp; finally, loading an anti-tumor medicine DOX.

The invention relates to a method for simple and rapid preparation of a hydrogel bilayer film with high adhesion acting force, and belongs to the field of functional polymer materials. According to the method, nano aluminum hydroxide sol, nano zirconium hydroxide sol, nano clay and the like are used as crosslinkers, acrylic acid, N,N-dimethacrylamide, acrylamide, N-isopropyl acrylamide and the like are used as monomers, and in-situ free radical polymerization is used for preparing various nano complex hydrogels; based on high-strength hydrogels, a bridged polymer is prepared by activation reaction of chitosan, sodium alginate and other macromolecules with carboxyl of EDC / NHS, and the bridged polymer is bonded by self or with other hydrogels to prepare the hydrogel bilayer film with high adhesion acting force in a wet environment; the bilayer film has extremely strong adhesion acting force, simple preparation method and easy operation in preparation process, greatly expands the application of the hydrogels, and has strong application potential in intelligent bionic drive, flexible sensing parts, biomedical materials and other fields.

The invention relates to a SiC-ZrC-ZrB2 nano complex phase ceramic modified C / C composite material and a preparation method thereof. A technical scheme adopted by the invention is that the preparation method of the SiC-ZrC-ZrB2 nano complex phase ceramic modified C / C composite material comprises the following steps: mixing 1-5wt% of organic boron, 5-10wt% of organic silicon, 10-20wt% of a ZrC precusor and 65-84wt% of an asphalt methylbenzene soluble component, adding a solvent to dissolve the mixture, reacting the obtained solution for 1-4 hours at 300-450 DEG C to obtain boron-silicon-zirconium-doped asphalt; dipping a carbon fiber prefabricated body with the boron-silicon-zirconium-doped asphalt, and then carrying out pyrolysis treatment to obtain a SiC-ZrC-ZrB2 nano complex phase ceramic modified C / C perform body; and repeatedly dipping and carrying out pyrolysis treatment on the SiC-ZrC-ZrB2 nano complex phase ceramic modified C / C perform body until the density is 1.9-2.5g / cm<3> to obtain the SiC-ZrC-ZrB2 nano complex phase ceramic modified C / C composite material. The composite material prepared by the preparation method has good mechanical performance, self-healing antioxidant ability and superhigh temperature ablation resistance within a wider temperature range.

The invention protects a preparation method of magnetic Fe3O4 / CeO2 nano-complex and a method of treating a methylene blue solution by using the magnetic Fe3O4 / CeO2 nano-complex as a Fenton-like catalyst. The magnetic complex catalyst consists of a nano-ceria material which coats magnetic ferroferric oxide nanometer particles. The magnetic solid catalyst provided by the invention can be used as a heterogeneous catalyst to catalyze hydrogen peroxide to generate hydroxyl free radicals for degradation of methylene blue. By using the method provided by the invention, the degradation rate of methylene blue in 30 minutes reaches 90% or more.

The invention discloses a nano carrier prepared from marine sulfated polysaccharide, a nano complex, and an application of the safe and nontoxic nano carrier with specific activity of the marine sulfated polysaccharide. According to the technique, the nano carrier is prepared from marine sulfated polysaccharide with certain biological activity as an edible and safe water-soluble biological macromolecular material by using intermolecular crosslinking and compounding of the marine sulfated polysaccharide and chitosan and derivatives of the chitosan; a hydrophobic microdomain formed by convolving between polysaccharide molecules is beneficial to adsorption and aggregation of fat-soluble active substances; entrapment and dispersion of a water-soluble nano carrier on the fat-soluble active substances are achieved; and the nano complex with good biological activity is formed. The prepared nano complex is beneficial to transportation and absorption of the active substances in vivo; and the bioavailability of the active substances is improved.

The invention discloses a preparation method of ultra-amphiphobic NFC (nano-fibrillated cellulose) aerogel based on directional freezing. The method comprises the steps as follows: preparing celluloseaerogel from NFC as a raw material and DMSO (dimethyl sulfoxide) as an additive by directional freezing; preparing the ultra-amphiphobic NFC aerogel from trichloro-(1H,1H,2H,2H-heptadecafluorodecyl)silane as a low surface energy modifier by chemical vapor deposition modification. The NFC mixed solution is solidified with a directional freezing method, the special hydrogen bond formed by DMSO andwater affects growth of liquid solvent ice crystals, so that micron-sized flaky and nano-fiber structures exist in the composite aerogel simultaneously, and an ideal micro / nano complex rough structureis formed; the surface energy is reduced by fluoroalkyl on the aerogel surface, the surface has the liquid repelling capability, and thus, the ultra-amphiphobic surface is generated, strength of theaerogel is improved, the aerogel has ultra-amphiphobic property, and practical application performance can be greatly improved.

The invention discloses a double-quantum-dot nano complex nitrogen monoxide ratiometric fluorescent probe and a preparation method thereof, belonging to the fields of nano technology and chemical analysis. The preparation method of the probe comprises the following steps: (1) carrying out reaction on mercaptopropionic-acid-stable CdSe quantum dots and a silane agent to obtain an amino-surface-functionalized CdSe@SiO2 core-shell complex; (2) dropwisely adding the mercaptopropionic-acid-stable CdSe quantum dot dispersion solution into the core-shell complex system to prepare a CdSe@SiO2-CdTe nano complex; and (3) introducing NO into the nano complex system, determining the fluorescence emission spectrum of the system, fitting the linear relationship between the CdTe / CdSe quantum dot ratiometric fluorescence intensity and NO concentration, and establishing the NO ratiometric fluorescent probe based on the CdSe@SiO2-CdTe nano complex. Compared with the prior art, the ratiometric fluorescence intensity introduced into the fluorescent probe can obviously enhance the NO detection accuracy and feasibility, and has important application value.

The invention provides a microRNA nano complex based on a framework nucleic acid material as well as a preparation method and application of microRNA nano complex, and belongs to the field of nucleic acid molecule medicines. The method comprises the following steps of firstly, providing a DNA tetrahedral framework nucleic acid with one or more DNA cohesive ends, and then providing a microRNA nano complex which is obtained by taking the DNA tetrahedral framework nucleic acid as a carrier and loading microRNA. According to the microRNA nano complex, the stability of the microRNA can be kept, the separation of the microRNA from a carrier DNA tetrahedron in a body can be realized, the action efficiency of the microRNA cannot be influenced, and the defects of poor stability and poor effect of a microRNA nano-composite material in the prior art are overcome. The microRNA nano composite material is high in cell entry effect, can be well ingested by BMSC, promotes osteogenic differentiation of BMSC, realizes in-vivo bone regeneration, has excellent biological activity, and is excellent in application prospect.

The invention relates to a preparation method for a nanogold / manganese dioxide / graphene-carbon nanotube three-dimensional structural nano complex. The method specifically comprises the following steps: firstly carbon nanotubes are oxidized by a strong acid, and graphene oxide is stripped from the surfaces of the carbon nanotubes in the oxidation process, so that a graphene oxide-carbon nanotube three-dimensional carbon structure is formed; then KMnO4 is added to make manganese dioxide deposited on the surface of the carbon material, and the graphene oxide can be reduced to graphene through high-temperature heating; and manganese dioxide / graphene-carbon nanotubes are subjected to amination treatment, negatively-charged colloidal gold nanoparticles are immobilized on the surfaces of the aminated carbon nanotubes by utilizing electrostatic interaction, and therefore the complex is obtained. The preparation method provided by the invention is simple, and sandwich design of the manganese dioxide solves the problems of conductivity and stability of a manganese dioxide material and expands the application range of the manganese dioxide material; and a sensor prepared by using the complexrealizes rapid, sensitive and high-selectivity detection on hydrogen peroxide, and has potential application prospects.

The invention belongs to the field of nano materials, and relates to a quantum dot-polyelectrolyte fluorescent nano complex with stable fluorescent property and application thereof. The invention discloses a method for preparing the quantum dot-polyelectrolyte fluorescent nano complex. The quantum dot-polyelectrolyte fluorescent nano complex is formed by self assembly of quantum dots and a polyelectrolyte, has multilayer structure formed by alternately arranging quantum dot layers and polyelectrolyte layers and is in a flexible strip shape, the width of the strip is 2 to 30 nanometers, and the length of the strip is 5 to 400 nanometers. According to the complex, the problem of instability of the quantum dots because sulphydryl ligands of the quantum dots easily drop in application is solved, and the fluorescent quantum yield of the quantum dots is not reduced; and meanwhile, the fluorescent nano complex using the quantum dots is used for preparing SiO2 coated nano particles with high quantum yield, and can be effectively used for biological imaging and biomarkers due to good biocompatibility and high quantum yield.

The invention discloses a method for liquid-phase synthesis of a nano complex of silver, chitosan and / or chitosan derivatives. The obtained product has the effects of promoting wound surface healing, stopping bleeding, relieving pain, resisting inflammation and killing bacteria, can be used for treating female colpitis, cervicitis and cervical erosion, decubitus, dermal ulcer, burn, scald, wound and other skin inflammation, tinea of feet and hands and the like, and can also be used for preparing various wound dressings such as thin films, sponge, gynecologic suppository, paster and the like.

The invention discloses a preparation method of a bismuth (III) trioxide-bismuth oxycarbonate nano complex through room temperature solid phase chemical reactions. According to the preparation method,solid phase raw materials namely sodium bismuthate dihydrate and sodium hydrogen sulfite are mixed, then ball-milling solid phase reactions are carried out in the presence of CO2, and finally the reaction product is washed, centrifugally separated, and dried to obtain the target product namely a Bi2O3-Bi2O2CO3 nano complex. Solids are mixed, the raw materials are ball-milled at room temperature to carry out solid phase reactions, the preparation process is simple and is easy to control, the agglomeration of product particles is largely reduced; a redox agent, a template agent, or a solvent isnot needed, the product purity is improved therefore, the green synthesis is realized, and the method is suitable for large scale production.

The invention belongs to the technical field of sewage treatment and particularly relates to a preparation method of a novel liquid-state nano complex flocculant. The preparation method comprises thefollowing steps: step 1, taking waste liquid containing hydrochloric acid, corroded aluminum and oxidized ferric, discharged in production processes, as raw materials, and performing stirring treatment for reacting to generate an aluminum chloride and ferric chloride mixture solution; step 2: adding the aluminum chloride and ferric chloride mixture solution generated in the reaction to a sodium hydroxide solution, adjusting the solution to a certain pH value, and standing the solution for a period of time to obtain a polymeric aluminum ferric chloride (PAFC) solution; and step 3, adding the obtained PAFC solution to an organic cation polymer product to generate a nano flocculant. The nano complex flocculant prepared by the preparation method provided by the invention has the beneficial effects that the nano complex flocculant belongs to an efficient complex variety, and pesticide wastes are used as raw materials, so that waste utilization is realized, ecological environment protectionis realized, and green cyclic development of agriculture is promoted; and compared with a traditional solid-state product, the nano complex flocculant has the advantages of high reaction speed, full reaction, uniform concentration and greatly improved treatment efficiency.

The invention relates to a method for preparing nano (1-x)Ba1-nSrnTiO3-xMgO complex-phase powder in situ by coprecipitation. A preparation flow comprises the following steps: weighing nitrates of barium, strontium and magnesium into water according to an accurate stoichiometric ratio to prepare a solution A; weighing butyl titanate according toan accurate stoichiometric ratio and dissolving into an ethanol-oxalic acid solution to prepare a solution B; slowly dropwise adding ammonia water into a mixed solution of the solution A and the solution B and carrying out a coprecipitation reaction; controlling the pH value of the reaction system to be 2-10; and carrying out filtering, washing, heat treatment and grinding on precipitate to obtain the nano (1-x)Ba1-nSrnTiO3-xMgO complex-phase powder. The preparation process is simple, short in period and low in cost; and the obtained nano complex-phase powder has good dispersity, uniform grain diameter and high degree of crystallization and can be put into practice.

The invention discloses a Fe@C@g-C3N4 nanometer composite and a preparation method and application thereof, and belongs to the technical field of preparation of nanometer materials. A microscope structure of the nanometer composite material is a Fe@C core shell structure nanocapsule embedded in a g-C3N4 nanometer piece. Iron powder and melamine powder are pressed to a block as an anode target material according to a certain atomic percentage by a plasma arc discharge method; graphite serves as a cathode material; argon and methane serve as working gas; a certain distance is kept between a cathode graphite electrode and an anode iron-melamine powder block; and the arc discharge is performed between an anode and a cathode to obtain the Fe@C@g-C3N4 nanometer composite. A wave absorbing material prepared by the nanometer composite is excellent in microwave absorbing performance in 2-18 GHz range. The Fe@C@g-C3N4 nanometer composite is simple in preparation process, free of after-treatment procedures, low in cost and easy to realize industrial production.

The invention discloses a method for detecting thiocyanate ion in milk based on fluorescence resonance energy transfer. The method comprises the following steps: preparing gold nano solution gel; synthesizing a fluorescein-gold nano complex; detecting the thiocyanate ion and detecting the actual sample. According to the method, the thiocyanate ion is quantitatively detected through fluorescence recovery of a gold nano-fluorescein system caused by competitive binding of the thiocyanate and fluorescein on the surface of the gold nano, the total detection time used by the provided detection method is less than 30 minutes, the thiocyanate ion in the milk can be simply, rapidly and sensitively detected, the method has extremely high sensitivity, the detection limit is 0.09nM, and convenience is provided for research, production and supervision in the future.

The method for preparing nano complex-phase ceramics by using modified porous structure powder body includes the following steps: adopting chemical assembly method to introduce the component into thepores of porous material with unsaturated bond to obtain modified porous structure powder body, mixing the modified porous structure powder body with ceramic raw material powder body, forming and sintering so as to obtain the invented nano complex-phase ceramics with uniformly-distributed component of powder body.

The invention relates to a preparation method and application of a hydrostable nano complex. The preparation method comprises the following steps: dissolving zinc nitrate in water to obtain a zinc nitrate water solution, adding the solution into a dimethylformamide solution of triazinyl tribasic carboxylic acid, and blending by shaking; carefully adding anhydrous ethanol and a potassium hydroxide water solution into the supernatant of the mixed solution, blending by shaking to obtain a colloid homogeneous liquid, standing, carrying out centrifugal separation, and washing the obtained solid to obtain the nano triazinyl complex; and adding DMF (N,N-dimethylformamide) and hexamethyne diisocyanate into the prepared nano triazinyl complex under stirring conditions, keeping the temperature, cooling the solid, separating, washing and drying to obtain the hydrostable nano complex material. The nano complex material has the advantages of small particle size and high specific area, has abundant imino (-NH-) active sites in the structure, has higher capacity for adsorbing Hg (II) pollutants in water, and thus, has favorable industrial application prospects.

The invention discloses a construction method and application of a carbon nanotube-fullerene complex-based non-enzymatic electrochemical sensor. The manufacturing method of the sensor comprises the following steps of (1) pre-activating multi-walled carbon nanotubes (MWCNTs); (2) preparing a composite material (MWCNTs-ZnP-C60) of the multi-walled carbon nanotubes and zinc porphyrin fullerene (ZnP-C60); and (3) rousing the electrochemical activity of the MWCNTs-ZnP-C60 by virtue of tetraoctyl ammonium bromide (TOAB), modifying the MWCNTs-ZnP-C60 on the surface of a glassy carbon electrode (GCE) and constructing the non-enzymatic electrochemical sensor (TOAB / MWCNTs-ZnP-C60 / GCE). The ZnP-C60 is utilized as an electron intermediate, the MWCNTs are taken as an electron transfer promoter, and the TOAB is taken as an electronic wake-up agent of the intermediate ZnP-C60, and the ZnP-C60, the MWCNTs and the TOAB work together to prepare an MWCNTs-ZnP-C60 nano-complex with good electrochemical activity; and the non-enzymatic electrochemical sensor with good electro-catalytic property is constructed in an TOAB membrane and is applied to detection of nitrite.

The invention discloses a nano complex metal coating knitwear and its production technique. The invention objective is to deal with the problem which knitwear is weak electric conductive, weak electromagnetic wave shed, weak washing resistance and tough hand feeling. The technique is to coat a nano complex metal on the knitwear. The metal contains silver 1- 10 percent, nickel 20- 70 percent; copper 10- 40 percent; zinc 0- 30 percent. Average particle size of the nanometer material is between 40 and 90 nanometer. The preparation technique includes: 1, knitwear coat layer reform; 2, dressing agent preparation; 3, nano complex metal coating process; 4, baking. The invention enhances washing resistance and softness of the coat layer greatly with fine electrical conductivity, moreover the bacteriostatic ratio to staphylococcus is above 99 percent.

The invention relates to a quadruple-responding nano composite. With a reductive-ruptured disulfide bond as a connection point, the nano composite is prepared by polymerizing dimethylaminoethyl methacrylate on surface of a reduced graphene oxide-mesoporous silicon dioxide composite through an atom transfer radical polymerization reaction. The nano composite has temperature, pH value and reduction responding properties, has near-infrared light response, and has wide application prospect in the field of controlled release.