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CN103817345
Three-step reduction method preparation process for nanocopper

The invention relates to a three-step reduction method preparation process for nanocopper. The preparation process comprises the following steps: 1, preparing copper sulfate solution, potassium hydroxide solution, ascorbic acid, formaldehyde solution and potassium borohydride solution; 2, single-step reduction: ascorbic acid solution is dropwise added into the copper sulfate solution while stirring is carried out; 3, two-step reduction: the formaldehyde solution is added; 4, three-step reduction: the potassium hydroxide solution is added, the pH value of the solution is adjusted to 9-13, the potassium borohydride solution is dropwise added and is stirred until sediment is completely generated, and copper powder is obtained by filtration; 5; cleaning and drying the copper powder to obtain 300-800 nm nanocopper.; By means of three reduction reagents, and according to the reducibility difference of the reduction reagents, the reduction reagents are added into the dissolvable copper sulfate solution in sequence to prepare the nanocopper, and the nanocopper is thinner in grain size, smaller in distribution range and more uniform.



CN101671592
Energy-saving lubricating oil for gasoline engine and diesel engine and preparation method thereof

The invention relates to energy-saving lubricating oil for a gasoline engine and a diesel engine and a preparation method thereof. The conventional lubricating oil has great limitation and harms the living environment of human. The lubricating oil of the invention comprises the following components in portion by weight: 1,000 portions of lubricating oil and 3 to 10 portions of self-repairing nanocopper alloy antiwear agent. The preparation method comprises the following steps: controlling the temperature of the 1,000 portions of lubricating oil to between 40 and 60 DEG C; adding the 3 to 10 portions of self-repairing nano copper alloy antiwear agent into the lubricating oil; and evenly stirring the mixture for 1 to 3 hours. The energy-saving lubricating oil of the invention serves as automotive engine oil; and the invention discloses the preparation method for the energy-saving lubricating oil.



CN1536058
Lubricating oil additive containing oleophilic nano copper powder

The present invention relates to a new type lubricating oil additive containing oleophilic nano copper powder, also includes preparation method of oleophilic nano copper powder and method for dispersing nano copper powder in the lubricating oil. (1). said oleophilic nano copper powder is made up by using reducing agent to reduce cupric salt in liquid phase; (2). said oleophilic nanocopper powder has good dispersion stability in the lubricating oil by obtaining good surface modification in the course of preparation; and (3). after said lubricating oil additive is added in the lubricating oil, it can effectively improve friction property of lubricating oil, can obviously reduce friction coefficient, can reduce wear and has the self-repairing action.



US2015344715
OXIDATION RESISTANT COPPER NANOPARTICLES AND METHOD FOR PRODUCING SAME

The present invention relates to oxidation resistant copper nanoparticles, and to a method for producing the same, which includes the steps of: preparing a first solution composed of a solvent, a polymer, and an organic acid; stirring the first solution to produce a first stirred solution; mixing the first stirred solution, a copper precursor, and a first reducing agent to produce a second reactant solution; mixing a second reducing agent with the second reactant solution to produce a third reactant solution; and collecting copper nanoparticles separated from the third reactant solution, which is a very simple process performing the reactions at a normal temperature under atmospheric conditions to produce copper nanoparticles, and an eco-friendly method firstly applying a watery solvent so as to achieve mass production of copper nanoparticles only by mixing solutions. In particular, the copper nanoparticles according to the present invention may have excellent oxidation resistant properties to prevent them from being oxidized for three months or more even when preserved at a normal temperature under atmospheric conditions.



WO2015166755
COPPER NANOPARTICLE DISPERSION AND PRODUCTION METHOD OF CONDUCTIVE SUBSTRATE

PROBLEM TO BE SOLVED: To provide a production method of a conductive substrate which allows acquisition of a conductive substrate excellent in conductivity by baking at low temperatures or in a short time.SOLUTION: A production method of a conductive substrate includes a step of forming a coating film by applying, onto a substrate, a copper nanoparticle dispersion which comprises copper nanoparticles, a carboxylic acid, an alkylamine, a polymer dispersant and a solvent, with the polymer dispersant having one of the amine and acid values of 30-160 mg KOH/g and the other of 0-160 mg KOH/g and a volume average particle size by the dynamic light scattering method of 500 nm or smaller, and a step of baking the coating film.



CN105098150
Method for in-situ growth of copper oxide nanoparticles on graphene matrix    

The invention discloses a method for in-situ growth of copper oxide nanoparticles on a graphene matrix. Through the method for in-situ growth of the copper oxide nanoparticles on a lamellar structure of a graphene sheet, an anode material suitable for a lithium ion battery is obtained. Compared with the prior art, the method disclosed by the invention has the advantages that a copper oxide/graphene nanocomposite material prepared by the method can play an elastic buffer role in volume change generated in lithiation/lithium deintercalation and intercalation processes, so that an electrode material is not broken, so as to enhance the stability of the battery anode. In addition, according to the material, the reversible capacity of the lithium ion battery can be enhanced; good circulation capability of the battery can be kept; the electrochemical property of a high-insulativity electrode material can be improved to the maximal extent; the rate capability is high; the operation is simple and convenient; and the material is saved.



US2015336804
COMPOSITIONS AND METHODS FOR PREPARING COPPER-CONTAINING PAPER AND USES THEREOF    

The invention comprises an environmentally benign method for the direct in situ preparation of copper nanoparticles (CuNPs) in paper by reducing sorbed copper ions with ascorbic acid. Copper nanoparticles were quickly formed in less than 10 minutes and were well distributed on the paper fiber surfaces. Paper sheets were characterized by x-ray diffraction, scanning electron microscopy, energy dispersive x-ray spectroscopy, and atomic absorption spectroscopy. Antibacterial activity of the CuNP sheets was assessed for by passing Escherichia coli bacteria suspensions through the papers. The effluent was analyzed for viable bacteria and copper release. The CuNP papers with higher copper content showed a high bacteria reduction of log 8.8 for E. coli. The paper sheets containing copper nanoparticles were effective in inactivating the test bacteria as they passed through the paper. The copper levels released in the effluent water were below the recommended limit for copper in drinking water (1 ppm).



CN105070366
Carbon nano fiber cable and preparation method thereof

The invention relates to a carbon nano fiber cable and a preparation method thereof. The cable is formed by a parallel carbon nano fiber with a sheath core structure, and is of a twisted yarn structure in an axial direction. A sheath layer is made from graphitic carbon, a core layer is formed by copper nanoparticles, and copper nanoparticles are adhered to the surface of the carbon nano fiber. The continuously twisted carbon nano fiber yarn cable with doped metal copper ions has a thin fiber diameter and a thin yarn diameter, exhibits good conductivity and high yarn orientation degree, is low in resistivity, and facilitates rapid transmission of electrons. The cable is simple to make, is low in cost, is friendly to environment, can serve as a nano cable, and has wide application prospects.
 


CN105001941
Lubricating oil improving agent


The invention provides a lubricating oil improving agent. The lubricating oil improving agent comprises, by weight, 10%-25% of two or more kinds of metal nanoparticles from copper, or tin, or zinc, or nickel or molybdenum, 70%-85% of nanometer polymer composites and 0.01%-5% of a mixture, wherein the particle sizes of the metal nanoparticles are lower than 45 nanometers, the nanometer polymer composites are formed by copolymer compositions of oil hydrocarbon or esterified esters or a sulfonate surface active agent and iron-based ion copolymer with the average particle size lower than 30 nanometers, and the mixture is formed by an antioxidant, a metal corrosion resistance agent and a friction improving agent. According to the technical scheme, the lubricating oil improving agent comprises multiple kinds of metal nanometer spherical particles, after the lubricating oil improving agent is mixed with lubricating oil, the metal nanometer spherical particles can permeate the metal surfaces of components of an engine, and the friction of the surfaces of the components is changed into the ball type friction from the friction between the faces. Meanwhile, a high-strength protecting film is formed on the metal surfaces. The lubricating oil improving agent has the advantages that blending is convenient, the stability, the abrasion resistance performance and the dispersibility are good, and the abrasion scratches can be repaired automatically.



US2013008690
COMPOSITIONS AND METHODS FOR GROWING COPPER NANOWIRES

A method of synthesis to produce gram-scale quantities of copper nanowires in an aqueous solution, wherein the copper nanowires are dispersed in said solution. Copper nanowires grow from spherical copper nanoparticles within the first 5 minutes of the reaction. Copper nanowires can be collected from solution and printed to make conductive films (preferably <10,000 /sq) that preferably transmit greater than 60% of visible light. [ohm] FIG. 2



RU2560682
METHOD FOR PREVENTION OF ADVERSE HEALTH EFFECTS OF GENERAL TOXIC AND GENOTOXIC ACTION OF COPPER OXIDE NANOPARTICLES    

FIELD: medicine.SUBSTANCE: complex of biologically active preparations containing glutamic acid, glycine, cysteine, pectin enterosorbent, cod liver oil rich in omega-3 nonesterified fatty acids, as well as a polyvitamin-mineral complex containing such biomicroelements, as molybdenum, manganese, zinc and iron are prescribed for the individuals of the risk group; the individuals of the risk group take the preparations of the complex as a re-treatment once or twice a year for 4 to 6 weeks daily in adequate doses to supply glycine 300 mg, cysteine 600 mg, glutamic acid 4 g, cod liver oil containing 12-15% of omega-3 nonesterified fatty acids 25 ml, pectin 4-5 g a day, as well as microelements and vitamins in adequate doses to cover the normal physiological body needs.EFFECT: effective reduction of sub-chronic systemic toxicity and genotoxicity ensured by oral administration of the presented combination of bioprotective preparations.  



US2014363870
METHOD FOR OBTAINING COPPER NANOPARTICLES FROM RHODOTORULA MUCILAGINOSA, BIOREMEDIATION OF WASTE WATER, AND USAGE OF RHODOTORULA MUCILAGINOSA IN PRODUCTION OF COPPER NANOPARTICLES

PROBLEM TO BE SOLVED: To provide a method for obtaining copper nanoparticles from Rhodotorula mucilaginosa, a bioremediation method of waste water, and usage of Rhodotorula mucilaginosa in production of copper nanoparticles.SOLUTION: There is provided a method for obtaining copper nanoparticles from Rhodotorula mucilaginosa, a method for using dead biomass of Rhodotorula mucilaginosa for executing bioremediation of waste water and for producing copper nanoparticles on an industrial scale, and furthermore, a synthesis method of biosynthesizing and removing copper nanoparticles by using yeast Rhodotorula mucilaginosa as a reducing agent, whose scale is expandable quickly, inexpensively, environmental friendly, and easily.



US2014363871
Process for obtaining copper nanoparticles from a fungus

The present invention refers to a process for obtaining copper nanoparticles from a fungus selected between Hypocrea lixii and Trichoderma koningiopsis. The present invention refers to the use of dead biomass of Hypocrea lixii or Trichoderma koningiopsis to perform bioremediation of wastewater and for industrial scale production of copper nanoparticles. In the present invention, it is developed a synthetic strategy for the biosynthesis and removal of copper nanoparticles which is fast, low cost, environment friendly and easily scalable, using as a reduction agent the fungus Hypocrea lixii or Trichoderma koningiopsis.



JP2014224276
METHOD FOR PRODUCING COPPER NANOPARTICLE HAVING HIGH DISPERSION STABILITY

PROBLEM TO BE SOLVED: To provide a method for easily producing monodispersed copper nanoparticles having an average particle diameter of 10 nm or less which are useful as an ink material, a light emitting material, a catalyst material or the like without using a dispersant or a surfactant.SOLUTION: There is provided a method for producing copper nanoparticles in which a raw material solution obtained by dissolving a copper compound and a salt in a polyol solvent is heated and refluxed while irradiating the solution with a microwave.



KR101500701
MANUFACTURING METHOD OF COPPER NANO FLUID USING LIQUID PHASE PLASMA REACTION

The present invention relates to a method for manufacturing a copper nanofluid using a liquid phase plasma reaction and, more specifically, to a method for manufacturing a copper nanofluid, wherein the manufacture and dispersion of the copper nanofluid are continuously conducted in a single process by generating plasma inside a liquid containing copper ions. The method for manufacturing a copper nanofluid using a liquid phase plasma reaction according to the present invention includes a precursor solution manufacturing step for manufacturing a precursor solution containing copper ions by dissolving copper chloride in water; a surfactant addition step for adding a surfactant into the precursor solution; and a liquid phase plasma reaction step for generating plasma inside the precursor solution added with the surfactant to generate copper nanoparticles.



US2014302984
HETEROGENEOUS COPPER NANOCATALYST AND MANUFACTURING METHODS THEREOF

This invention relates to a heterogeneous copper nanocatalyst composed of copper nanoparticles immobilized on a boehmite support, a method of preparing the same, and the use thereof. The copper nanocatalyst composed of the copper nanoparticles supported on boehmite exhibits excellent performance in a Huisgen cycloaddition reaction and an A3 coupling reaction of aldehyde, amine and alkyne. The copper nanocatalyst is able to be prepared in a large scale and shows superior reactivity even when used in a small amount under mild conditions without an additive in an organic reaction. This heterogeneous catalyst is easy to separate and reuse after the reaction.



JP2014152395
METHOD FOR PRODUCING COPPER NANOPARTICLE SUITABLE FOR COPPER NANOINK

PROBLEM TO BE SOLVED: To provide a method for producing copper nanoparticles by a polyol method, being a method for easily producing copper nanoparticles suitable for copper nanoink, having excellent oxidation resistance and dispersion stability and further having low temperature sinterability t 200 DEG C or lower.SOLUTION: Provided is a method for producing copper nanoparticles by a polyol method. The method for producing copper nanoparticles is characterized in that: (1) it has a step of heating a solution in which both of a copper compound and ammonium formate are dissolved in polyol solvent: and (2) the constituting components other than copper in the copper compound are dissolved or evaporated at 200 DEG C or lower.



CN104057100
Method for purifying copper nanoparticles

The invention discloses a method for purifying copper nanoparticles, and belongs to the technical field of nanometer material synthesizing methods. The precursor of copper is cheap, and nanometer-grade copper particles have high catalytic activity, but the copper nanoparticles tend to be oxidized easily, severely influencing the catalytic performance of copper. Thus, the purification of copper nanoparticles is an important link in the application on the catalytic aspect. A purification solution contains chloride, glucose or ascorbic acid, citrate and soluble carbonate; during purification, copper nanoparticles to be purified are added into the purification solution and are aged for certain days, and purification is performed by using the own disproportionation reaction and the oxidation-reduction reaction of a system to obtain pure copper nanoparticles. The purification solution can be used repeatedly; the reaction residual solution of copper nanoparticles prepared by using a liquid-phase wet chemical reduction method can be skillfully taken as the purification solution. The method has the advantages of low cost, easiness in operation, saving of energy, environmental friendliness and high product purity, and can be widely applied.



TWI478861
Method for electrodepositing copper nanoparticles

The present invention provides a method for electrodepositing copper nanoparticles, which includes the following steps: (A) providing an electrodepositing reaction system, which comprises an electrolyte, a conductive nitride membrane placed in the electrolyte as a working electrode, a copper metal or copper alloy placed in the electrolyte as an auxiliary electrode, and a reference electrode placed in the electrolyte; and (B) applying impulse voltage to the electrodepositing reaction system to form copper nanoparticles on a surface of the conductive nitride membrane.



MX2012012726
PROCESS FOR THE SYNTHESIS OF COPPER NANOPARTICLES BY THE THERMAL DECOMPOSITION AND USE THEREOF AS ANTIMICROBIAL AGENTS.

The present invention refers to a process for the synthesis of copper nanoparticles by the thermal decomposition and use thereof as antimicrobial agents using salts of Cu and an oleate complex. The Cu nanoparticles obtained by the present invention are in pure state and have high oxidation stability; the process may also control the distribution of the particle size, as well as the morphology thereof. In addition, the Cu nanoparticles present an antimicrobial activity higher than 95% for inhibiting S. aureus and P. aeuroginosa, therefore the Cu particles having an application potential as antimicrobial agents.



MX2012012718
SYNTHESIS OF METALLIC NANOPARTICLES MODIFIED WITH POLYMERS BY NITROGEN LIGANDS.

The present invention refers to a process for the synthesis in situ of copper or copper oxide nanoparticles, the method being practical and easy to carry out, since the production of copper or copper oxide nanoparticles is carried out in a single step while the surface modification or functionalization is performed, this aspect turning the invention into a an affordable method as it is free of organic solvents since it is performed in an aqueous medium and does not require inert atmospheres, thereby being considered a safe and efficient method as it has a substantially high performance. This method promotes the obtention of copper or copper oxide nanoparticles superficially modified or functionalized in a spherical form in an individual manner with a nanometric size of from about 2-50 and in a semi-circular form in pellets with a nanometric size ranging from 20 to 300 nm, the synthesis being particularly performed in situ by chemical reduction using nitrogen ligands and polymers, whic h structure has nitrogen atoms, this process also using hydrated hydrazine as a reducing agent.



KR20140057515
METHOD FOR PREPARING LINEAR METAL NANOPARTICLES

The present invention relates to a method for preparing metal nanoparticles of a linear structure and includes a) a step of preparing a metal-containing mixture solution by mixing a metal solution including at least one metal selected from the group consisting of ruthenium, silver and copper and an alkaline solution; and b) a step of making the metal-containing mixture solution react under plasma discharge. The metal nanoparticles of a linear structure prepared by the method of the present invention has a large surface area with respect to volume, and activity is increased. Thus, the activity is high at a low temperature and durability is good, and so, various contaminating materials such as nitrogen oxides, carbon monoxide, volatile organic compounds, sulfurous acid gas, etc. may be efficiently controlled. In addition, since the metal nanoparticles of a linear structure of the present invention has antibiotic activity with respect to bacteria, the metal nanoparticles may be used as a coating agent during manufacturing an antibiotic filter, an antibiotic gauze for medical used.



US2013334104
DISTILLING A CHEMICAL MIXTURE USING AN ELECTROMAGNETIC RADIATION-ABSORBING COMPLEX FOR HEATING

A method of distilling a chemical mixture, the method including receiving, in a vessel comprising a complex, the chemical mixture comprising a plurality of fluid elements, applying electromagnetic (EM) radiation to the complex, wherein the complex absorbs the EM radiation to generate heat at a first temperature, transforming, using the heat generated by the complex, a first fluid element of the plurality of fluid elements of the chemical mixture to a first vapor element, and extracting the first vapor element from the vessel, where the complex is at least one selected from a group consisting of copper nanoparticles, copper oxide nanoparticles, nanoshells, nanorods, carbon moieties, encapsulated nanoshells, encapsulated nanoparticles, and branched nanostructures.



TW201336603
Copper nanowire preparation methods and compositions

Methods are disclosed for preparing copper nanowires that do not rely on highly reactive reagents, highly corrosive solutions, high temperatures, or long reaction times. Nanowires produced from such methods are free of large attached nanoparticles that have accompanied previously disclosed copper nanowires. Such nanowires are useful for electronics applications.



SG192150
STABILIZED METAL NANOPARTICLES AND METHODS FOR PRODUCTION THEREOF

Processes for synthesizing metal nanoparticles, particularly copper nanoparticles, are described. The processes can involve reacting an insoluble complex of a metal salt with a reducing agent in a reaction mixture containing a primary amine first surfactant, a secondary amine second surfactant, and a diamine chelating agent third surfactant. More specifically, processes for forming copper nanoparticles can involve forming a first solution containing a copper salt, a primary amine first surfactant, a secondary amine second surfactant, and a diamine chelating agent third surfactant; allowing an insoluble complex of the copper salt to form from the first solution; combining a second solution containing a reducing agent with the insoluble complex; and forming copper nanoparticles from the insoluble complex. Such copper nanoparticles can be about 10 nm or smaller in size, more particularly about 3 nm to about 6 nm in size, and have a fusion temperature of about 200 DEG C or lower.



WO2014178087
COOLANT FOR INTERNAL COMBUSTION ENGINES COMPRISING A NANOFLUID

Coolant to be used in internal combustion engines comprising bi-distilled water, metal oxide nanoparticles, ionic surfactant. Said coolant can comprise copper oxide nanoparticles, having average dimension between 5 and 10 nm. Preferably, the nanoparticles volume percentage with respect to the coolant is between 1% and 4% and the mass ratio between the ionic surfactant quantity and the quantity of nanopowders is between 0, 1% and 1.2%.



KR101244135
ORGANIC SOLAR CELL USING NANO MATERIALS OF CU AND CU2O

PURPOSE: An organic solar cell using copper and a copper oxide nanomaterial is provided to increase current density by amplifying the generation of electron-hole pairs. CONSTITUTION: An organic solar cell includes a bottom electrode, an electron transport layer, and a substrate. A hole transporting layer includes core-shell type nanoparticles made of Cu and CuO2. The hole transporting layer is formed by oxidizing the surface of Cu nanoparticles with a solution. [Reference numerals] (AA,DD) Electrode; (BB) Photoactive layer; (CC) Electron transport layer; (EE) Substrate; (FF) Light energy



CN102941350
Preparation method of copper nanoparticles    

The invention relates to a synthesis method of copper nanoparticles. The copper nanoparticles are specifically prepared by conducting thermal decomposition reaction with a copper compound in an organic solvent at a high temperature. The preparation of the copper nanoparticles is relatively difficult, the copper powder at the nano-scale cannot be prepared by the existing industrialized electrolytic process, atomization method, etc., and the current synthesis method in a laboratory has certain problems and cannot be successfully applied to preparing the nano-scale copper powder in a large-scale industrialized way.; According to the preparation method of the copper nanoparticles, the problem that only oxides can be prepared by a high-temperature thermal decomposition method is solved, and the nano-scale copper powder can be prepared without additionally adding other reduction agents or protective agents. The problem of difficulty in removing impurity ions does not exist, the high purity of the nano-scale copper powder is guaranteed, and the subsequent processing cost is also reduced. Therefore, the preparation method has the advantages of simplicity in operation, low cost, high product yield, controllable particle size of a product, and no pollution to the environment, etc., and the preparation method of the copper nanoparticles has excellent industrial prospect.



JP2012251190
METHOD FOR SYNTHESIZING NANOPARTICLE

PROBLEM TO BE SOLVED: To provide a simple, low-cost method for synthesizing nanoparticles. SOLUTION: The hydrogeneration treatment method includes: a step of preparing a solution (S) obtained by mixing metal salt (MS) and a reducing agent (R) into a solvent (Sv); and a step of heating the solution (S) to a temperature more than the boiling point under the atmospheric pressure of the solvent (Sv) to less than 180[deg.]C at the inside of a sealed vessel (X). For example, as the solvent (Sv), at least one selected from the group consisting of water and alcohol is used. As the metal salt (MS), the salt of at least one metal selected from the group consisting of gold, silver, copper, platinum, palladium, ruthenium, cobalt, nickel, molybdenum, indium, iridium and titanium is used. As the reducing agent (R), polyvinylpyrrolidone is used.



US2012315480
COPPER NANOPARTICLES WITH MAGNETIC PROPERTIES

The present invention relates to thiol- or an amine-associated ferromagnetic or superparamagnetic copper nanoparticles with an average diameter less than 30 nm, to the method for obtaining them and their applications in biomedicine and other fields.



CN102787347
Preparation method of overlong copper nanowire and conductive copper nanowire film

The invention discloses a preparation method of an overlong copper nanowire. The preparation method comprises steps as follows: (1) dissolving a cationic surfactant into a reducing organic solvent under a condition at 170-190 DEG C to obtain a solution A, wherein the reducing organic solvent is long-chain alkyl amine; (2) dissolving a copper source into the solution A completely, stirring to obtain a solution B; adding noble metal nanoparticles or a silicon sheet plated with the noble metal into the solution B to serve as a catalyst; reacting for 2-20 hours under the condition at 100-200 DEG C; and (3) after cooling the reaction system, taking out the solid and washing the solid by an organic solvent. The diameter of the copper nanowire prepared by the method is about 40-80nm, the length is about 300-1500 mu m; and the copper nanowire is a mono-crystalline copper nanowire grown along the [001] direction. The copper nanowire is proved by XRD (X ray diffraction). The method is simple to operate, the synthesized overlong copper nanowire is of a mono-crystalline structure and is easy to disperse, and a prepared conductive film is excellent in performance.



RU2460553
METHOD OF TREATING INFECTED WOUNDS IN EXPERIMENT

invention refers to medicine, namely experimental medicine, surgery and aims at treating purulent wound in experiment. A method involves a pre-toilet, application of a dressing containing an iron nanoparticle suspension in the concentration of 0.1 mg/ml and a copper nanoparticle suspension in the concentration of 0.001 mg/ml in 0.9% normal saline prepared by plasma flow of temperature 5000-6000 K. Copper nanoparticle dispersion makes 30 nm, while iron nanoparticle dispersion is 70 nm. ^ EFFECT: along with simplified and cheaper treatment of purulent wounds, eliminated toxic action of the nanoparticles the method reduces time of elimination of contaminating agent substantially, provides wound sterility, faster wound regeneration and complete repair.



TW201143941
Method for preparing copper nanoparticle which is capable of being calcined under atmospheric pressure

The present invention relates to a method for producing copper nanoparticles capable of being fired at atmospheric pressure. The method of the present invention involves adding strongly basic low nucleophilic organic amines or organic diamines to a copper precursor solution, and performing a reduction process on the resultant mixture to produce copper nanoparticles. The thus-produced copper nanoparticles are small and uniform, and are not oxidized even when being fired at atmospheric pressure in which partial pressure of oxygen exists, thus exhibiting superior electrical conductivity, and can be valuably used as materials for metal ink in lieu of expensive silver particles.



KR101249967
Preparing method of Copper Nanoparticle and preparing method of triazole compounds using said Copper Nanoparticle as a catalysts

PURPOSE: A manufacturing method of copper nanoparticles and a manufacturing method of triazole compound which uses thereof as a catalyst are provided to synthesize water-soluble copper nanoparticles which is stable under a mild processing condition. CONSTITUTION: A manufacturing method of copper nanoparticles uses double block hydrophilic copolymers(10). The double block hydrophilic copolymer consists of active ionization blocks(11) and neutral blocks(12). The double block hydrophilic copolymer is poly(acrylic acid)-b-poly(ethylene oxide)(PAA-b-PEO). A manufacturing method of the copper nanoparticle comprises the following steps: manufacturing a mixture by stirring the double block hydrophilic copolymer and copper chloridation dihydrate; producing suspension by adding NaOH in the mixture; and adding hydrazine to the suspension while strongly stirring the mixture.



WO2012109084
THERMOELECTRIC GENERATION UTILIZING NANOFLUID

According to one aspect, a system generates electricity from a temperature differential using a thermoelectric module. At least one side of the temperature differential is supplied by a thermal element having a fluid flowing through it. The fluid contains suspended nanoparticles to enhance the transfer of heat between the fluid containing the nanoparticles and the thermal element, as compared with a similar fluid not containing the nanoparticles. The nanoparticles may include metal ions, for example silver ions, copper ions, or both. The system may further include an ion generator for generating the ions within the fluid.



CN102554217
Water-soluble nano-copper and preparation method thereof

The invention belongs to the technical field of nanometer materials, and particularly relates to water-soluble nano-copper and a preparation method of the water-soluble nano-copper, wherein the water-soluble nano-copper is nano-copper clusters which are surface-modified by stable organic single molecules formed in a way that organic compound surface modifier containing sulfydryl is bonded on the surface of copper nanoparticles. The invention can obtain copper nanoparticles which can be effectively dispersed in water phases and can exist stably, and is simple in preparation process and preparation devices, low in raw material cost, low in the production cost, high in yield, and suitable for large-scale industrial production, and the raw materials are easily accessible.



RU2410472
METHOD OF PRODUCING COPPER NANOPARTICLES IN AQUEOUS MEDIUM

FIELD: metallurgy. ^ SUBSTANCE: invention relates to production of copper nanoparticles to be used as biocide component in medicine and veterinary science. Proposed method comprises dissolving stabilising components in solvent, introducing anode nanoparticles, in the form of copper plate and node, into stabiliser solution, and electrochemical dissolution of anode in causing stabilised direct current to flow through the solution. Note here that distilled water is used as a solvent, while organic and inorganic stabilising components are used as stabilisers. Dissolution of stabilising components is carried out in two stages. Note here that, first, in heating and mixing, organic stabilising components are dissolved, and, then after cooling at mixing, inorganic components are dissolved. Note also that stainless steel plate is used as cathode. ^ EFFECT: copper nanoparticles are produced in aqueous medium that features high stability.



RU2410471
METHOD OF PRODUCING METAL NANOPARTICLES IN AQUEOUS MEDIUM

FIELD: metallurgy. ^ SUBSTANCE: invention relates to production of copper nanoparticles to be used as biocide component in medicine and veterinary science, etc. Proposed method comprises dissolving stabilising components in solvent, introducing anode nanoparticles, in the form of copper plate and node, into stabiliser solution, and electrochemical dissolution of anode in causing stabilised direct current to flow through the solution. Note here that distilled water is used as a solvent, while organic and inorganic stabilising components are used as stabilisers. Dissolution of stabilising components is carried out in two stages. Note here that, first, in heating and mixing, organic stabilising components are dissolved, and, then after cooling at mixing, inorganic components are dissolved. Note also that stainless steel plate is used as cathode. ^ EFFECT: production of nanoparticles with strongly pronounced bactericidal Catalytic, antirust and magnetic properties. ^ 1 tbl, 6 ex
 


KR20120045711
PREPARATION METHOD OF COPPER NANOPARTICLES

PURPOSE: A manufacturing method of copper nano-particle is provided to control form of the copper nano-particle and control use amount of organic acid and surfactant. CONSTITUTION: A manufacturing method of copper nano-particle comprises next steps: preparing mixed solution including copper precursor, organic acid, surfactant, and solvent; heating the mixed solution; and obtaining copper nano-particles from the mixed solution. The copper precursor is selected from a group including copper sulfate, copper nitrate, copper acetate, copper chloride, copper carbonate, and a mixture thereof. The organic acid is selected from hydroxycarboxylic acids having hydroxyl group and carboxylic acid group(-COOH). In mixed solution preparation step, a mixing ratio of the organic acid to the copper precursor is equivalence ratio of 1:2-5.



US2012155841
GENERATING A HEATED FLUID USING AN ELECTROMAGNETIC RADIATION-ABSORBING COMPLEX
 
A vessel including a concentrator configured to concentrate electromagnetic (EM) radiation received from an EM radiation source and a complex configured to absorb EM radiation to generate heat. The vessel is configured to receive a cool fluid from the cool fluid source, concentrate the EM radiation using the concentrator, apply the EM radiation to the complex, and transform, using the heat generated by the complex, the cool fluid to the heated fluid. The complex is at least one of consisting of copper nanoparticles, copper oxide nanoparticles, nanoshells, nanorods, carbon moieties, encapsulated nanoshells, encapsulated nanoparticles, and branched nanostructures. Further, the EM radiation is at least one of EM radiation in an ultraviolet region of an electromagnetic spectrum, in a visible region of the electromagnetic spectrum, and in an infrared region of the electromagnetic spectrum.





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