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2481results about "Nano-carbon" patented technology
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Nano-scaled graphene plates
A nano-scaled graphene plate material and a process for producing this material. The material comprises a sheet of graphite plane or a multiplicity of sheets of graphite plane. The graphite plane is composed of a two-dimensional hexagonal lattice of carbon atoms and the plate has a length and a width parallel to the graphite plane and a thickness orthogonal to the graphite plane with at least one of the length, width, and thickness values being 100 nanometers or smaller. The process for producing nano-scaled graphene plate material comprises the steps of: a). partially or fully carbonizing a precursor polymer or heat-treating petroleum or coal tar pitch to produce a polymeric carbon containing micron- and / or nanometer-scaled graphite crystallites with each crystallite comprising one sheet or a multiplicity of sheets of graphite plane; b). exfoliating the graphite crystallites in the polymeric carbon; and c). subjecting the polymeric carbon containing exfoliated graphite crystallites to a mechanical attrition treatment to produce the nano-scaled graphene plate material.
Owner:GLOBAL GRAPHENE GRP INC
Process for nano-scaled graphene plates
Owner:JANG BOR Z
Carbon nano-dot, and preparation method and application thereof
ActiveCN102849722AOvercome costsOvercoming the problem of easy fluorescence quenching in the aggregated stateNanotechnologyNano-carbonBiological imagingOrganic compound
The invention discloses a carbon nano-dot, and a preparation method and an application thereof, and solves a problem that the application of present nano-dots is restricted because of high preparation cost and easy fluorescent quenching appearance of an aggregate state. According to the invention, the carbon nano-dot having a high fluorescence quantum efficiency is prepared through adopting a polycarboxyl or polyhydroxy contained organic compound, or an amino acid as a raw material, and urea as a surface passivation modification agent, and through a microwave process, and a carbon nano-dot fluorescent ink is prepared through using the carbon nano-dot. The preparation method disclosed in the invention has the advantages of simplicity, low cost and convenient large-scale production; the fluorescent quenching of the prepared carbon nano-dot on the surface of a biological product does not appear, and the highest fluorescence quantum efficiency is 42%; and the prepared carbon nano-dot fluorescent ink is nontoxic, does not generate a precipitate after long-time dispose, and can be applied to the biological imaging field, the biological product identification field, the information storage field, the information encryption field, the false proof field, the illumination display field, the photovoltaic device field and the like.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Process for producing dispersible and conductive Nano Graphene Platelets from non-oxidized graphitic materials
ActiveUS20100056819A1Impart dispersibilityImpart solubilityMaterial nanotechnologyPigmenting treatmentDisplay deviceSolar cell
The present invention provides a process for producing nano graphene platelets (NGPs) that are both dispersible and electrically conducting. The process comprises: (a) preparing a pristine NGP material from a graphitic material; and (b) subjecting the pristine NGP material to an oxidation treatment to obtain the dispersible NGP material, wherein the NGP material has an oxygen content no greater than 25% by weight. Conductive NGPs can find applications in transparent electrodes for solar cells or flat panel displays, additives for battery and supercapacitor electrodes, conductive nanocomposite for electromagnetic wave interference (EMI) shielding and static charge dissipation, etc.
Owner:GLOBAL GRAPHENE GRP INC
Increased thermal conductivity monolithic zeolite structures
A monolith comprises a zeolite, a thermally conductive carbon, and a binder. The zeolite is included in the form of beads, pellets, powders and mixtures thereof. The thermally conductive carbon can be carbon nano-fibers, diamond or graphite which provide thermal conductivities in excess of about 100 W / m·K to more than 1,000 W / m·K. A method of preparing a zeolite monolith includes the steps of mixing a zeolite dispersion in an aqueous colloidal silica binder with a dispersion of carbon nano-fibers in water followed by dehydration and curing of the binder is given.
Owner:UT BATTELLE LLC
Methods and catalysts for the manufacture of carbon fibrils
An improved catalyst for producing carbon fibrils is made by incorporating an effective yield-enhancing amount of a carboxylate into a fibril-forming catalyst. Alternatively, such a catalyst is made by coprecipitating a compound of a metal having fibril-forming catalytic properties and an aluminum and / or magnesium compound, optionally in the presence of carbon particles or carbon fibril aggregates. The catalyst may also be made by incorporating a compound of a fibril-forming metal onto magnesia particles in carbon particles or carbon fibril aggregates. The catalysts, methods of using them to form carbon fibrils and those carbon fibrils are also disclosed.
Owner:HYPERION CATALYSIS INT
Process for preparing carbon quantum dots using emulsion
InactiveUS20150361334A1High reaction yieldEffective controlOrganic chemistryNano-carbonQuantum yieldEmulsion
The present invention provides a process for preparing carbon quantum dots having uniform size by using emulsion, and a process for doping the inside of the carbon structure with other element or replacing the surface with a surface stabilizer having a specific chemical functional group different from existing stabilizers in order to control the properties of the carbon quantum dots. The process for preparing the carbon quantum dots according to the present invention makes a mass production possible and the process thereof is simple. Furthermore, the process is easy to control the size of the quantum dots and the reaction yield rate of the method is excellent. In addition, according to the present invention, it is possible to synthesize carbon quantum dots having uniform size and superior quantum yield rate and it makes it possible to embody the color as equivalent to existing molecular chromophores or heavy metal quantum dots by changing the structure of the chromophore.
Owner:POSTECH ACAD IND FOUND
Nanocomposites and methods thereto
ActiveUS7479516B2Good dispersionImprove conductivityMaterial nanotechnologyGraphiteMechanical propertyPercolation threshold
Owner:EVERMORE APPLIED MATERIALS CORP
Cnt-infused glass fiber materials and process therefor
A composition includes a carbon nanotube (CNT)-infused glass fiber material, which includes a glass fiber material of spoolable dimensions and carbon nanotubes (CNTs) bonded to it. The CNTs are uniform in length and distribution. A continuous CNT infusion process includes: (a) disposing a carbon-nanotube forming catalyst on a surface of a glass fiber material of spoolable dimensions; and (b) synthesizing carbon nanotubes on the glass fiber material, thereby forming a carbon nanotube-infused glass fiber material. The continuous CNT infusion process optionally includes extruding a glass fiber material from a glass melt or removing sizing material from a pre-fabricated glass fiber material.
Owner:APPL NANOSTRUCTURED SOLUTIONS LLC
Cnt-infused glass fiber materials and process therefor
A composition includes a carbon nanotube (CNT)-infused glass fiber material, which includes a glass fiber material of spoolable dimensions and carbon nanotubes (CNTs) bonded to it. The CNTs are uniform in length and distribution. A continuous CNT infusion process includes: (a) disposing a carbon-nanotube forming catalyst on a surface of a glass fiber material of spoolable dimensions; and (b) synthesizing carbon nanotubes on the glass fiber material, thereby forming a carbon nanotube-infused glass fiber material. The continuous CNT infusion process optionally includes extruding a glass fiber material from a glass melt or removing sizing material from a pre-fabricated glass fiber material.
Owner:APPL NANOSTRUCTURED SOLUTIONS LLC
Carbon nanotube assembly and process for producing the same
ActiveUS20100301278A1High light transmittanceImprove surface resistanceMaterial nanotechnologyLayered productsElectron microscopeMaterials science
An aggregate of carbon nanotubes satisfying all of the following requirements (1) to (3):(1) the volume resistivity is from 1×10−5 Ω·cm to 5×10−3 Ω·cm;(2) at least 50 out of 100 carbon nanotubes are double-walled carbon nanotubes in observation by a transmission electron microscope; and(3) the weight loss from 200° C. to 400° C. in thermogravimetry at a temperature rise of 10° C. / min is from 5% to 20%.
Owner:TORAY IND INC
Preparation method of carbon quantum dots with adjustable fluorescence colors
InactiveCN103663412AHigh yieldImprove quantum efficiencyNano-carbonFluorescence/phosphorescenceUltraviolet lightsTumor cells
The present invention relates to a preparation method of carbon quantum dots with adjustable fluorescence colors, and belongs to the technical field of nanometer materials. According to method, citric acid or a citrate is adopted as a carbon source, a nitrogen-containing compound is adopted as a nitridation agent, hydrogen peroxide is adopted as an oxidant, a hydrothermal synthesis method is adopted to obtain an aqueous solution of carbon quantum dots emitting blue or green fluorescence under ultraviolet light excitation, reaction conditions are easily controlled, and the method is suitable for scale production. The prepared carbon quantum dots have advantages of adjustable fluorescence color, high yield, high quantum efficiency, good result reproducibility and the like, wherein the product can be directly used for tumor cell labeling and live cell imaging labeling. According to the present invention, only the one reactant is required, the raw materials are easily-available and non-toxic, the production process does not require special protection, the reaction condition is easily controlled, and the obtained carbon quantum dots have advantages of high yield, high quantum efficiency, good result reproducibility and the like; and the method has characteristics of high yield, simple preparation process, low cost, easy scale production and the like.
Owner:UNIVERSITY OF CHINESE ACADEMY OF SCIENCES
Process for producing dispersible and conductive nano graphene platelets from non-oxidized graphitic materials
Owner:GLOBAL GRAPHENE GRP INC
Method for synthesizing nitrogen doped carbon quantum dot based on one-step monocomponent hydro-thermal synthesis
ActiveCN103497762ALow priceSimple stepsNano-carbonLuminescent compositionsRoom temperatureFree cooling
The invention discloses a method for synthesizing nitrogen doped carbon quantum dots based on one-step monocomponent hydro-thermal synthesis, which comprises the following steps: mixing and dissolving ammonium citrate with water, putting the mixture in a sealed reaction vessel, performing heat preservation at 140-220 DEG C for 4-48 hours, after the reaction, naturally cooling to room temperature, and separating the product by a silica gel chromatographic column to obtain the nitrogen doped carbon quantum dots. Compared with existing methods, the method of the invention adopts a single and cheap raw material, is simple in steps, easy to operate, and suitable for mass production.
Owner:SHANGHAI JIAO TONG UNIV
Purification of fluids with nanomaterials
ActiveUS20070084797A1Reduce and eliminate needLow costRecord information storageEnergy based wastewater treatmentCarbon nanotubeNanostructured materials
Disclosed herein is a nanostructured material comprising defective carbon nanotubes chosen from impregnated, functionalized, doped, charged, coated, and irradiated nanotubes, and combinations thereof. The defective carbon nanotubes contain a defect which is a lattice distortion in at least one carbon ring. Also disclosed is a method of purifying fluids, such as liquids, including water, as well as gases, including the air using, this nanostructured material.
Owner:MULTIPURE INT
Preparation method of high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial
ActiveCN103303912AAchieve preparationHigh degree of graphitizationMaterial nanotechnologyNano-carbonLow nitrogenPore diameter
The invention discloses a preparation method of a high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial, relating to a preparation method of a carbon material and aiming at solving the problems of small specific surface area, low nitrogen content, low productivity, poor graphitizing degree and high cost of the nitrogen-doped graphitizing carbon nanomaterial prepared by the prior art. The preparation method comprises the steps of: I. preparing a complex; II. curing and carbonizing the complex; and III. carrying out acid leaching method treatment, and drying. Compared with an existing nitrogen-doped graphitizing carbon nanomaterial, the prepared high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial has the advantages that the graphitizing degree is improved, the nitrogen content is increased, and the specific surface area is obviously increased, and the high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial has obvious pore diameter distribution. The preparation method is used for preparing the high-specific-surface-area porous nitrogen-doped graphitizing carbon nanomaterial.
Owner:HEILONGJIANG UNIV
Highly efficient process for manufacture of exfoliated graphene
ActiveUS20110014111A1Economical and efficient methodHighly exfoliated grapheneMaterial nanotechnologyGraphiteCvd grapheneHigh surface area
A process for preparing oxidized graphite that provides exfoliated graphene, preferably with high surface area. The process uses considerably less chlorate than previously known systems.
Owner:DOW GLOBAL TECH LLC
Amorphous carbon insulation and carbon nanotube wires
InactiveUS6548313B1Material nanotechnologySemiconductor/solid-state device manufacturingCarbon nanotubeElectron
An apparatus includes a carbon nanotube coupled with a first device and a second device of an integrated circuit, wherein electrons can flow between the first device and the second device along the carbon nanotube. Doped amorphous carbon is deposited on the integrated circuit structure. The doped amorphous carbon is planarizing and patterned to form a trench. Carbon based precursor material is deposited in the trench. The carbon based precursor material is converted into the carbon nanotube, wherein the carbon nanotube connects the first device with the second device.
Owner:INTEL CORP
Si-o containing hydrogenated carbon film, optical device including the same, and method for manufacturing the si-o containing hydrogenated carbon film and the optical device
InactiveUS20100039707A1High diffraction efficiencyImprove adaptabilityMaterial nanotechnologyProjectorsCarbon filmRefractive index
An Si—O containing hydrogenated carbon film as an optical film has a refractive index in a range from at least 1.48 to at most 1.85 for light of 520 nm wavelength and an extinction coefficient of less than 0.15 for light of 248 nm wavelength, wherein the refractive index and the extinction coefficient are decreased with energy beam irradiation. By utilizing such an Si—O containing hydrogenated carbon film, it is possible to provide various types of optical elements and an optical device including the same.
Owner:SUMITOMO ELECTRIC IND LTD
Increased thermal conductivity monolithic zeolite structures
Owner:UT BATTELLE LLC
Methods of manufacturing and transferring larger-sized graphene
Example embodiments relate to methods of manufacturing and transferring a larger-sized graphene layer. A method of transferring a larger-sized graphene layer may include forming a graphene layer, a protection layer, and an adhesive layer on a substrate and removing the substrate. The graphene layer may be disposed on a transferring substrate by sliding the graphene layer onto the transferring substrate.
Owner:SAMSUNG ELECTRONICS CO LTD +1
Highly fluorescent carbon nanoparticles and methods of preparing the same
InactiveUS20120178099A1Small particle sizeImprove colloidal stabilityMaterial nanotechnologyNanosensorsQuantum yieldSynthesis methods
Highly fluorescent carbon nanoparticles (FCNs), with tunable emission colours of particle size between 1-10 nm also stable in solid form with high quantum yield (>5%) and its method of synthesis thereof yielding said carbon nanoparticles in milligram to gram scale in high synthesis yield (>80%). The present invention also provides for highly fluorescent carbon nanoparticle solution doped with heteroatom (such as oxygen, nitrogen) and its method of synthesis favoring yield of the said doped carbon nanoparticles of even smaller size ranging from 1-5 nm with narrow size distribution, and also provides for functionalized FCNs that are non-toxic, functional, soluble and stable fluorescent carbon nanoparticles with retained fluorescence for variety of end uses in biomedics, imaging applications, and detection techniques.
Owner:INDIAN ASSOC FOR THE CULTIVATION OF SCI AN AUTONOMOUS INST UNDER THE AEGIS OF DEPT OF SCI & TECH GOVERNMENT OF INDIA
Method for preparing water-soluble fluorescent carbon dots
The invention relates to a method for preparing water-soluble fluorescent carbon dots. The method comprises the following steps: by adopting a citric acid as a carbon source, urea as a passivator and a dopant and deionized water as solvents aiming at the conditions that the fluorescent carbon dots are high in accuracy and difficult to synthesize, preparing a carbon dot water solution by adopting a hydrothermal synthesis method; and preparing the carbon dots by the following processes of preparing the solution, air-tight reaction, filtering, dialyzing, freezing and drying, and grinding. The technology is advanced in process, rapid and efficient, accurate and specific in data, and good in product shape; the product is green powder particles; and the diameters of the particles are smaller than or equal to 5.5nm; the product is high in purity which can be up to 99%, and good in water-solubility which can be up to 99.5%. The method is an ideal method for preparing the fluorescent carbon dots. The product can be applied to the fields such as ion detection, bioimaging, photoelectric devices and composite materials.
Owner:TAIYUAN UNIV OF TECH
Porous carbon material used for lithium-air cell anode
ActiveCN103855413AShorten the diffusion distanceImprove space utilizationFuel and secondary cellsCell electrodesPorous carbonAir cell
The invention relates to an application of a porous carbon material with a grading pore structure in a lithium-air cell anode, and is characterized in that the carbon material has mutually communicated grading pore structure distribution which has a mesoporous structure for depositing the discharge products and a macroporous structure suitable for transmission of oxygen and an electrolyte. When the carbon material is taken as a material of the lithium-air cell anode, the space utilization rate of carbon material can be increased at maximum limitation during a charge and discharge process, specific discharge capacity, voltage platform and multiplying power discharge capability of the cell can be effectively increased, so that the energy density and power density of the lithium-air cell can be increased. The porous carbon material has the advantages that the preparation technology is simple, the material source is wide, the grading pore carbon material pore structure enables regulation and control, the regulation and control modes are various, and the doping of metal / metal oxide can be easily and simultaneously realized.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Deposition and Selective Removal of Conducting Helplayer for Nanostructure Processing
ActiveUS20090233124A1Harm reductionReduced compatibilityNanostructure manufactureDecorative surface effectsOptoelectronicsNanostructure
A method for making one or more nanostructures is disclosed, the method comprising: depositing a conducting layer on an upper surface of a substrate; depositing a patterned layer of catalyst on the conducting layer; growing the one or more nanostructures on the layer of catalyst; and selectively removing the conducting layer between and around the one or more nanostructures. A device is also disclosed, comprising a substrate, wherein the substrate comprises one or more exposed metal islands separated by one or more insulating areas; a conducting helplayer disposed on the substrate covering at least some of the one or more exposed metal islands or insulating areas; a catalyst layer disposed on the conducting helplayer; and one or more nanostructures disposed on the catalyst layer.
Owner:SMOLTEK AB
Method for preparing nitrogen doping hollow carbon nanocages
InactiveCN102530922AHigh purityHigh mesoporosityMaterial nanotechnologyNano-carbonPtru catalystCarbonate
The invention relates to a method for preparing nitrogen doping hollow carbon nanocages, which comprises the following steps that: (1) basic magnesium carbonate or magnesium carbonate is taken to be added into a reaction tube and is uniformly dispersed, then the reaction tube is placed in a tube furnace, air in the tube furnace is extracted, inert gases are filled into the tube furnace, under the condition of 10-500sccm of inert gases, the temperature of the tube furnace is increased to 650-1,100 DEG C, then the inert gas flow is guided into steam which contains carbon (C) and nitrogen (N), and after reacting for 5-240min, the temperature of the tube furnace is reduced to a room temperature; and (2) powder in the reaction tube is collected, put into hydrochloric acid or sulfuric acid solution to be soaked for 5-720min, filtered, cleaned by deionized water and dried, so a nitrogen doping hollow carbon nanocage is obtained. The nitrogen doping hollow carbon nanocage which is produced by the method has the advantages of high specific surface area, large pore volume, high mesoporous ratio, good graphitization degree and the like, and is a metal-free oxygen reduction reaction catalyst with excellent performance.
Owner:NANJING UNIV
Method for preparing photoluminescence carbon quantum dot
ActiveCN102745669AWide variety of sourcesLow costMaterial nanotechnologyNano-carbonProcess equipmentPhotoluminescence
The invention discloses a method for preparing a photoluminescence carbon quantum dot. The method includes the following steps of drying and dehydrating a solid residue obtained after squeezing soybeans into soya-bean milk, placing the dried and dehydrated solid residue in an electrothermal blowing dry box to heat and carbonize to obtain a crude product of the carbon quantum dot, grinding the crude product of the carbon quantum dot, sieving, dispersing the sieved crude product of the carbon quantum dot in deionized water, uniformly stirring, still standing, centrifuging, evaporating an obtained aqueous solution containing the carbon quantum dot, and freeze drying to form a powdered shape to finally obtain the photoluminescence carbon quantum dot. According to the method for preparing the photoluminescence carbon quantum dot, a household bean juice maker is used for obtaining soybean dregs which serve as raw materials, the source of the raw materials is wide, the photoluminescence carbon quantum dot is prepared through low temperature heating and carbonization, the operation is simple, the cost is low, the yield is high, the preparation process equipment is simple and easy, the operation can be completed within an extremely short time, and the method is easy to popularize.
Owner:SANITARY EQUIP INST ACAD OF MILITARY MEDICAL SCI PLA
Carbon particle fiber assembly technique
Carbon particles, such as, carbon fibrils and carbon nanotube molecules, are assembled into aligned fibers using processes derived from the processes used to manufacture optical fiber. More particularly, the carbon particles are embedded in glass, which is then drawn to align them. By aligned it is meant the axis along the longest dimension of each of the various particles in a local vicinity are substantially parallel.
Owner:NOKIA OF AMERICA CORP
Supported Catalyst with Solid Sphere Structure, Method for Preparing the Same and Carbon Nanotubes Prepared Using the Same
ActiveUS20100158788A1Increase production capacityHigh selectivityMaterial nanotechnologyNanostructure manufacturePtru catalystPhysical chemistry
A supported catalyst with a solid sphere structure of the present invention includes an oxide supporting body and a metal such as Ni, Co, Fe, or a combination thereof distributed on the surface and inside of the supporting body. The supported catalyst with a solid sphere structure can maintain a spherical shape during heat treatment and can be used with a floating bed reactor due to the solid sphere structure thereof.
Owner:LOTTE ADVANCED MATERIALS CO LTD
Preparation method of fluorescence carbon quantum dots
The invention relates to a preparation method of fluorescence carbon quantum dots. The preparation method comprises the following steps: a first step, collecting plant leaves, washing the leaves and drying the leaves in the air; a second step, burning the clean leaves to obtain a black solid; a third step, grinding the black solid into a powder, and dispersing the powder in a solvent to obtain a well dispersed suspension through magnetic stirring and ultrasonic treatment; a fourth step, centrifuging the suspension or carrying on a separating process using a filter membrane, removing precipitation to obtain a clear solution; and a fifth step, removing the solvent in the clear solution, then obtaining the solid of the fluorescence carbon quantum dots. According to the invention, a variety of the plant leaves can be employed as raw materials, sources of the raw materials are wide and preparation processes of the method are simple and easy.
Owner:NANJING UNIV OF TECH
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