30 results about "Atomic carbon" patented technology

An apparatus and method is disclosed for synthesizing graphene comprising the steps of providing a substrate and focusing a laser beam in the presence of a carbon doping gas to induce photolytic decomposition of the gas to atomic carbon. The carbon is photolytically reacted with the substrate to grow graphene.

The present invention provides a process for the manufacture of carbon nanostructures, the carbon nanostructures being selected from carbon nanotubes and carbon nano-onions. The method comprises the steps of injecting a carbon-containing gas into a plasma flame generated from a plasma forming gas to provide atomic carbon, which in the presence of in situ generated nanometer sized metal catalyst particles that act as nucleation points for growth of carbon nanostructures, produce the carbon nanostructures, and collecting the carbon nanostructures.

The invention relates to an organic electroluminescence device with the new structure, which comprises a first electrode, a second electrode, an organic layer positioned between the two electrodes and comprising a luminous layer. The device is characterized in that the luminous layer at least comprises a benzanthracene derivative selected from the general expression such as right; wherein X and Y are separately selected from cyclization aromatic groups of four to twenty atomic carbon atoms or replaced cyclization aromatic groups of four to twenty atomic carbon atoms; A1, A2, A3 and A4 are separately selected from hydrogen atoms, ethylene, aromatic amino, carbazyl or aromatic heterocyclic radical and are selected from the hydrogen atoms at different times. The device uses the benzanthracene derivative as luminescent dye, thus being capable of obtaining devices with high brightness, high efficiency and excellent emitting colors.

The invention provides a preparation method for directly depositing and growing graphene on a liquid bed in a variable-temperature area. Under protective gas, a solvent of the liquid bed in the variable-temperature area is a molten medium and a solute of the liquid bed in the variable-temperature area is atomic carbon; the molten medium consists of one or more substances with boiling point higher than carbon cracking temperature and melting point lower than the melting point of a target substrate; during work, the medium is heated to be in a molten state; the variable-temperature area is divided into a relative high-temperature area, a transitional variable-temperature area and a relative low-temperature area; the working temperature of the molten medium in the relative high-temperature area is higher than the carbon cracking temperature, the carbon source is activated and cracked in the relative high-temperature area, atomic carbon formed after cracking is dissolved into the molten medium, and the molten medium, in which the atomic carbon is dissolved, is cooled by the transitional variable-temperature area and is conveyed to the relative low-temperature area; and in the relative low-temperature area, the working temperature of the molten medium is slightly higher than or equal to the supersaturated precipitation temperature of the atomic carbon. The graphene can grow on the target substrate continuously and directly and does not need to be transferred, and the characteristics of excellent quality of a graphene film, low preparation cost, high efficiency and little pollution are achieved.

The invention discloses a method for modifying a PVC (Polyvinyl Chloride) resin in advance, which comprises the following steps of: mixing PVC (Polyvinyl Chloride) resin powder or granules with a structural modifying agent and an addition agent under a stirring condition, and reacting for 0.1-72 hours in the temperature of 5-120 DEG C, wherein the structural modifying agent is selected from alkane with 1-6 atomic carbons, halogenated methane, halogenated ethane, halogenated propane, carbon dioxide, dimethyl ether, aliphatic alcohol with 1-4 atomic carbons and ketone with 3-5 atomic carbons; the addition agent is selected from fatty acid salt, alkyl group sulfate, alkyl sulfonate, alkylbenzene sulfonate, tetra alkyl halogenated ammonium, tetra alkyl ammonium hydroxide, a betaine ampholyticactive agent and a segmented copolymer of epoxy ethane and propylene oxide. The invention also discloses modified PVC (Polyvinyl Chloride) obtained by using the method, the application of PVC (Polyvinyl Chloride), a method for preparing modified PVC (Polyvinyl Chloride) by using the modified PVC (Polyvinyl Chloride) and the modified PVC (Polyvinyl Chloride) obtained therefrom. According to the invention, a aggregative state structure of a macromolecule chain inside the PVC (Polyvinyl Chloride) powder is changed by adopting a specific method so that the PVC (Polyvinyl Chloride) powder can be conveniently used for subsequent chemical modification or subsequent molding processing.

A coating includes a titanium aluminum silicon carbon-nitride layer including a first surface and an opposite second surface. The atomic carbon content and/or the atomic nitrogen content in the titanium aluminum silicon carbon-nitride layer gradually increases from the first surface to the second surface.

The invention discloses a preparation method of a carbon composite silicon anode material of a lithium ion battery. The preparation method is technically characterized by comprising the following steps of: containing a high-temperature melt in a container; conveying the silicon dioxide micro-powder to the middle lower part of the container; continuously adding an organic carbon source into the container; performing stirring to enable the silicon dioxide micro-powder to be distributed in the high-temperature melt; cracking the organic carbon source into atomic carbon at a high temperature and diffusing the organic carbon source in the high-temperature melt; reacting the atomic carbon with silicon dioxide; obtaining a micro-nano carbon and silicon-variable oxygen type silicon monoxide-silicon oxide (micro-nono-Si/SiOx/SiO2(@)C) compound; and separating the melt or the cooling crystal substance of the melt from the micro-nono-Si/SiOx/SiO2(@)C compound, performing cleaning, purifying and the like to obtain the finished product of the carbon composite silicon anode material of the lithium ion battery. The prepared material is excellent in performance and quality, low in production cost,high in efficiency and less in pollution.

A few-layer graphite intercalation compound is technically characterized in that the compound includes 2-10 graphite layers, and spacing between every two intercalations is filled with an insert. The liquid bed preparation method comprises: under protective gas, forming a liquid bed through a molten medium that is composed of one or more substances and heated to molten state; activating and splitting a carbon source at high temperature, dissolving atomic carbon formed by splitting into the molten medium, activating inserts at high temperature, and dissolving in the molten medium, or the molten medium comprises the insert; by means of promoting graphite intercalation compound reaction and solidification and crystallization, allowing carbon and the insert to be bonded during crystallizing, and precipitating few-layer graphite intercalation compound in super-matured mode in the molten medium state. The few-layer graphite interaction compound and its preparation method have the advantages that high-performance high-mass few-layer graphite intercalation compound, the cost is low, little pollution is caused, and the efficiency is high.

The invention relates to a MnAlC-based high coercive force permanent magnetic material and a preparation method thereof. The preparation method comprises the following steps of proportioning raw materials and preparing a master alloy; crushing a master alloy ingot obtained after smelting, cleaning surface impurities and carrying out drying treatment to obtain a crushing block alloy; placing the obtained crushing block alloy into a quartz tube, carrying out melting treatment under the vacuum condition and the protective atmosphere, and preparing an alloy ribbon through the alloy in the molten state; carrying out heat treatment on the alloy ribbon; and lastly, carrying out ball-milling treatment on the treated alloy ribbon under the action of a surfactant to obtain the MnAlC-based high coercive force permanent magnetic material. In comparison with the prior art, the small-radius atomic carbon is introduced for stabilizing a magnetic phase by means of element doping control, the boundary of a magnetic domain is pinned by the transition metals, a balance between the magnetic performance and the price is sought without using the rare earth element; the surfactant is introduced to assist ball milling, so that the coercive force of the material is greatly improved.

The invention belongs to the technical field of inorganic chemical industry, and particularly relates to a phosphorus and nitrogen co-doped iron monatomic carbon material as well as a preparation method and application thereof. The iron monatomic carbon material contains four elements of phosphorus, nitrogen, iron and carbon at the same time, iron is dispersed in an atomic scale, Fe atoms on a carbon-nitrogen substrate are averagely coordinated with four N atoms, and a P atom is averagely connected with the N atoms around each Fe-N4. The invention accidentally finds that by introducing the heteroelements N and P to regulate and control the electronic structure at the Fe-N4 active site, the stability of the active site can be improved while the activity of the catalyst is improved, and the tolerance of the catalyst to phosphoric acid is enhanced. Compared with an f-FeNC catalyst not doped with a P element and a commercially available platinum-carbon electrode, the ORR catalytic activity and stability of the synthesized f-FeNPC catalyst in a phosphoric acid system and a perchloric acid system are obviously improved, and when the synthesized f-FeNPC catalyst is used for preparing an oxyhydrogen fuel cell electrode material, the cell power density is high.

A process of forming an image includes the steps of: developing an electrostatic latent image with a toner, the latent image being formed through charge of the surface of an electrostatic latent image carrier and exposure of the surface to light; and applying a lubricant onto the surface of the electrostatic latent image carrier. The toner includes a toner matrix particle and an external additive nanoparticle. The external additive nanoparticle comprises a silica-polymer composite nanoparticle. A percentage of atomic silicon present on the surface of the silica-polymer composite nanoparticle satisfies Condition A expressed by Expression: 15.0 atm %≦percentage of atomic silicon ({Si/(C+O+Si)}×100)≦30.0 atm %. The percentage of atomic silicon is determined from total amounts of atomic carbon, oxygen, and silicon present on the topmost surface of the silica-polymer composite nanoparticle and within 3 nm inwards from the topmost surface.

Carbon nitride materials and method of making said carbon nitride materials is described. The carbon nitride materials can be a three dimensional C₃N₅ 3-amino-1,2,4,-triazole and urea based mesoporous carbon nitride matrix having an atomic carbon to nitrogen ratio of 0.55 to 0.8 and basic nitrogen containing groups of between 0.15 to 0.25 mmol per gram.

An atomic carbon material and a preparation method thereof having ion adsorption ability superior to fullerenes and nano-tubes are provided. This atomic carbon material is in a state existing as an organic compound and in a state close to an atom with a diameter of 1 nm or less (theoretically about 1.66 angstrom), and is a bulk where they are congregated with each other with an interatomic force or a particle with a particle size of 1 nm or less. This atomic carbon material is manufactured by heating a raw material composed of an organic material which does not include carbon units in an inactive atmosphere at a predetermined temperature while sequentially increasing the temperature and by individually separating expected elements except for carbon in the aforementioned atmosphere and the organic material from being bonded with carbon by thermally decomposing in order from an element having a lower decomposition temperature at a temperature of 450 C or lower.

The invention discloses a method for directly growing graphene on carbon black. The method comprises the following steps: taking finished carbon black as a raw material, taking high-temperature melt as a solvent and a carrier, and taking an organic carbon source as a precursor of the graphene; conveying the carbon black into the bottom of a flat-bottomed container which is filled with the high-temperature melt for accumulating and spreading, wherein the carbon black floats in the melt because of low apparent density; simultaneously, adding the organic carbon source into the high-temperature melt; splitting the organic carbon source into atomic carbon in virtue of the high temperature of the melt; dissolving the atomic carbon into the high-temperature melt solvent; continuously adding the organic carbon source so that the atomic carbon reaches a supersaturation condition in the high-temperature melt, wherein the graphite crystallite in a carbon black structure is beneficial to the growth of the graphene, and the graphene is supersaturated and separated out on the floating carbon black to realize direct growth. The graphene-modified carbon black prepared by the method is excellent inperformance and quality, low in cost, high in efficiency and low in pollution.