715 results about "Microwave method" patented technology

The semiconductor device includes a signal processing circuit, an antenna circuit that is connected to the signal processing circuit, and a storage means that supplies electric power to the signal processing circuit. The signal processing circuit receives and transmits information through the antenna circuit, generates a direct current voltage from signals received by the antenna circuit, and stores the direct current voltage in the storage means. Furthermore, the antenna circuit has an antenna portion that receives signals by an electromagnetic induction method and an antenna portion that receives signals by a microwave method so that signals of frequencies from a wide band can be received. Because signals from a wide band can be received, the environment in which the storage means can be charged is widened.

The invention provides a method for preparing silver nanometer wire with controllable wire diameter by a cation control microwave method, aiming at solving the problems of rough wire diameter, low diameter ratio and the like during preparation of the silver nanometer wire by the traditional microwave method. The method comprises the following steps of: (1) adding a mixture of silver nitrate powder and a dispersing agent into ethylene glycol and preparing a solution reaction system containing silver ions; (2) adding a cation control agent in the solution reaction system containing silver ions and evenly stirring to obtain a reaction precursor; and (3) irradiating the reaction precursor under microwave, centrifuging, ultrasonically washing and drying the solution prepared through microwave irradiation to obtain the silver nanometer wire powder with controllable wire diameter. The invention has the advantages of simple preparation method, high efficiency and low cost and ensures that the high-quality silver nanometer wire can be prepared repeatedly within wide range of reaction condition. By using a soft template method, the size of the wire diameter is controlled by using the cation control agent without introducing any impurity.

The invention discloses an ultrahigh-capacity lithium ion battery anode material prepared by a microwave method and a preparation method thereof. The method comprises the following steps: mechanically or chemically and uniformly mixing the hydroxide, oxide or salt containing lithium with the hydroxide, oxide or salt containing transition metal M, the hydroxide, oxide or salt containing doped metal M' and additives in a certain proportion; and then putting the mixture into an atmosphere furnace, performing heat treatment on the mixture so as to acquire the required laminar materials rich in lithium and manganese oxides. According to the invention, heating with microwave is adopted, thus not only can the heating time is shortened, and the heat use ratio is increased, but also the heat treatment is even, so that the problems of the traditional heating method that the heating is uneven, the heating time is long, the temperature is high and the like are all solved. Besides, the prepared ultrahigh-capacity lithium ion battery cathode material, namely the laminar materials rich in lithium and manganese oxides, contains no impurity phase, and has the characteristics of uniform mean grain size, excellent circulating property and excellent electrochemical performance. The preparing method provided by the invention has the advantages of simple process, low preparation cost, energy conservation, high efficiency and suitability for industrial production.

A method shortened form glycol desulfurizing method for desulfurizing Sox (x=2 and/or 3) in the gas using a solution of which the main constituent is glycol which is glycol solution for short. The main constituent of glycol solution in the invention is glycol. The method of glycol desulfurization in the invention, firstly, absorbs SOx (containing: SO2 and/or SO3) in the gas using glycol solution, and then the glycol solution after absorbing Sox is generated by one or several methods in heating method, vacuum method, ultrasonic method, microwave method and radiation method. SO2 and SO3 byproduct is exhausted out, and the glycol solution after regenerated is cyclic utilized.

The invention provides a nano conductive adhesive. The conductive adhesive is a uniform mixture of one of or two, three or four of micron-grade silver powder, submicron-grade silver powder, nano silver powder or a nano silver wire, and a high molecular material, solvent and a curing agent. The invention also provides a preparation method of the nano conductive adhesive, which comprises the following steps: 1. preparing the micron-grade silver powder, the submicron-grade silver powder, the nano silver powder and the nano silver wire by a microwave method; and 2. mixing the components in different proportions with the high molecular material, the solvent and the curing agent. The invention has the advantages of even diameter of a conductive silver particle obtained by the microwave method and simple preparation. The conductive adhesive performance can be improved by the optimal design of the particle proportion. The conductive adhesive with high conductive performance is prepared by three silver powder particles and one nano silver wire in certain size selection and proportion. The prepared conductive adhesive has stable performance and high rheological property.

The invention relates generally to chemical reactions and processes, and in particular to a method for enhancing the rate of a chemical reaction and to apparatus for carrying out the method. The invention more particularly relates to methods and apparatus which utilize microwave and ultrasonic energy to enhance chemical reaction rates; and in specific instances, the invention relates to methods, processes and apparatus for the synthesis of biodiesel fuels. The methods, processes and apparatus of the invention are useful for the synthesis of biodiesel fuels; and also useful for production of reaction products of esterification and/or transesterification reactions including fatty acid alkyl esters.

The invention provides an extracting process for efficiently extracting polysaccharide of enteromorpha. In a process of adding water to extract, the polysaccharide of enteromorpha is extracted by at least two of a microwave method, an ultrasonic method and an enzyme method, wherein in the ultrasonic method, the ultrasonic frequency is 3800 MHz-7500MHz, the extracting time is one minute to three minutes, and the pH value is 5.0-5.5; in the microwave method, the microwave frequency is 55kHz-75kHz, the extracting time is one minute to three minutes and the pH value is 5.0-5.5; in the enzyme method, the adding amount of the enzyme is 0.8%-2%, the pH value is 5.0-6.0, the treatment time is 1.5hours-2hours and the reaction temperature is 25 DEG C to 37 DEG C; and in a solid-liquid separating step, the slag of the extracted liquid is removed by adopting a screen cloth of 150-250 meshes. According to the extracting process disclosed by the invention, the polysaccharide of enteromorpha can be extracted within a short time.

The invention discloses a method for synthesizing a composite molecular sieve by a microwave method and catalytic performance application thereof. In the method for preparing the composite molecular sieve by the microwave method, kaolin is taken as a raw material, inorganic silicate is taken as an additional silicon source, and the prepared composite molecular sieve is applied to the alkylation reaction of phenol and tertiary butanol. The method comprises the following steps of: adding a certain amount of sodium silicate into the kaolin serving as the raw material to synthesize a Y type molecular sieve precursor; and preparing a composite molecular sieve Y/MCM-41 by the microwave method by using hexadecyl trimethyl ammonium bromide serving as a template. The synthesized molecular sieve has two pore structures, namely micropores and mesopores; the specific surface area of a sample is more than 550 m<2>/g; the average pore size is roughly 2.7 nm; and the sample has a regular and ordered hexagonal pore structure. The synthesized molecular sieve has good catalytic effect on the alkylation reaction of the phenol and the tertiary butanol, and particularly the selectivity of 4-tertiary butyl phenol is up to 86.3 percent.

The invention relates to a preparation method of a herbal tea, specifically relates to an instant burdock herbal tea and a preparation method thereof, and belongs to the food processing field. According to the method, burdock juice is obtained through extraction and enzymatic clarification of fresh burdock; and the instant burdock herbal tea is prepared by adding auxiliary material juice, maltodextrin, skimmed milk powder and citric acid and through the steps of homogenization, concentration, lyophilization and the like. The burdock is extracted by using an ultrasonic-microwave method. The method combines two action modes of ultrasonic vibration and open microwaves directly, takes full use of a hole effect of the ultrasonic vibration and a high energy effect of the microwaves, overcomes the disadvantages of a conventional ultrasonic- and microwave-assisted extraction, and realizes fast, efficient and reliable pretreatment for solid samples under a low temperature atmospheric pressure condition. The instant burdock herbal tea prepared by the invention is convenient to take and to brew, and can play the roles of clearing away heat and summer heat, expelling dampness to remove fever, and promoting the secretion of saliva and relieving thirst, etc.

The invention relates to a method for extracting a natural Chinese medicinal herb fragrance component and application of an extract thereof. The extracting method comprises the following steps: using natural Chinese medicinal herbs such as indigowoad root, fig, couch grass root and the like as main raw materials; and extracting a final black brown liquid with light sweet fragrance through the steps of mixing, primary extracting, condensing and reheating, wherein the extract is dissolved by 60 percent ethanol and then sprayed to tobacco shreds by adopting an atomizing mode to be coiled into cigarette, and the product has obvious fragrance in the cigarette. According to different physicochemical properties of substances to be extracted, the substances are extracted by using mixed solvents with different concentrations through a microwave method; therefore, the extracting and heating time is shortened, the energy is saved, the extraction efficiency and the yield are improved, and the effective components in the raw materials are obtained; a plurality of new fragrant substances such as pyrazine, pyrrole, furan and the like are produced during the reaction, so the fragrance increasing effect is more remarkable; and the extracting method is simple, the equipment is easy to operate, and the method has no pollution to the environment.

The invention relates to a method for preparing ferroferric oxide nano-piece through a microwave method, which belongs to the field of preparation of nano-material through a wet chemical method. The method comprises the following steps of: preparing a ferric salt solution by using ethylene glycol by using a soluble trivalent ferric salt as a raw material , adding the sodium acetate and a surfactant in the ferric salt solution, evenly stirring, and irradiating by using microwave to generate ferroferric oxide, filtering and washing the product, drying the product at a constant temperature in air to obtain the ferroferric oxide nano-piece material. The ferroferric oxide nano-piece material synthesized by the method has a thickness of 100nm below as well as the length and width of 1-10microns. The invention has the advantages of high purity of the prepared ferroferric oxide nano-piece, simple synthetic line, short period of microwave reaction of only tens of minute and easy control of the whole process, meets the demands of practical production, and has god application prospect in the fields of catalysis, biological medicine, energy and environment and the like.

The invention relates to a fullerene molecular gyroscope which is characterized in that: atoms or molecules are embedded in the fullerene, so as to prevent spin collision exchange relaxation and spin collision damage. The micro-crystallizing standard solid molding is adopted, so that the fullerene molecules are arrayed according to a certain structure and the sensitive atomic density is increased. An optical and microwave method is adopted for controlling and detecting the atomic energy level, so that the detection for a dead axle and an inertia signal of the atoms or molecules in an inertia space is realized. The fullerene molecular gyroscope has the advantages of high sensitivity and excellent heat stability and has an important value for developing a new generation solid gyroscope based on an atomic spin effect and with high precision, high stability and small volume.

The invention relates to an instant green tea powder processing method which comprises the following steps of: killing out fresh tea leaves by adopting a vacuum microwave method, carrying out superfine grinding after deep freezing, extracting and superfinely filtering by adopting secondary vacuum ultrasonic wave, and freezing and drying to obtain the instant green tea powder. The killing, extraction and drying steps are completed under a vacuum condition, and the action temperature is low, so that the oxidation of effective ingredients in fresh tea leaves can be effectively avoided; and vacuum ultrasonic extraction after freezing and superfine grinding ensures the full leaching of the effective ingredients. The product produced by the processing method has the advantages of high production efficiency, good product color, fresh taste, good dissolvability, incapability of generating tea cream and the like.

The invention discloses a method for preparing gold nanoparticles by using compound high-molecular protective agents under the action of microwaves, comprising the following steps of: mixing polyvinylpyrrolidone and a polyethylene glycol compound protective agent with a chloroauric acid solution; fast reducing the chloroauric acid solution into the gold nanoparticles by taking sodium citrate as a reductant in a microwave reactor; after microwave reaction is finished, adding hexadecyl trimethyl ammonium bromide to prevent the growth of the gold nanoparticles; separating finial products, and then washing by using water so as to obtain spherical gold nanoparticles with grain diameters between 15 nanometers and 60 nanometers and intensively distributed. The gold nanoparticles obtained by taking the polyvinylpyrrolidone and the polyethylene glycol as the compound high-molecular protective agents have uniform grain diameter and good product stability; in the invention, the whole preparation process of the gold nanoparticles through a microwave method only needs less than 20 minutes, thereby enhancing the reaction rate and providing a new way for the preparation of the gold nanoparticles; and in addition, the prepared gold nanoparticles can be used for biomedical detection and biochemical products.

The invention discloses a preparation method of SnO2/C fiber, which relates to the technical field of preparation of a transition metal oxide and carbon fiber composite electrode material applied to a lithium ion battery. According to the preparation method provided by the invention, an electrostatic spinning method is used, SiO2 is used as a pore-forming agent, and the pore-forming agent is mixed with PAN and PVP for performing electrostatic spinning to form a composite fiber. After high-temperature calcination and carbonization, the obtained nitrogen-doped multiporous carbon fiber is mixed with certain proportion of SnCl4.5H2O and urea, and the SnO2/C fiber is prepared through a microwave method. Diameter of the prepared SnO2/C fiber is 1mm, and inside of the prepared SnO2/C fiber is a hollow structure formed after SiO2 is removed. The SnO2/C fiber prepared through the preparation method provided by the invention not only has uniform surface distribution, but also has high specific capacity when being used as a lithium ion battery negative electrode material.

The invention discloses a method for synthesizing a carbon quantum dot by using a biologic active enzyme auxiliary microwave method. The method specifically comprises the following steps: (1) ultrasonically dispersing a carbon precursor and biologic active enzyme into deionized water, so as to prepare a transparent solution; (2) putting the solution obtained in the step (1) into a domestic micro-oven for heating through microwave, and reacting to obtain claybank liquid which is the biologic active enzyme modified carbon quantum dot; (3) dialyzing the carbon quantum dot solution obtained from the reaction in the step (2) by using a dialysis bag, so as to remove unreacted carbon precursor and biologic active enzyme. The method is high in yield; as the prepared carbon quantum dot is modified by the biologic active enzyme, the carbon quantum dot can enter cell nucleus and has the diagnosis and treatment function on cancer; the biologic active enzyme is used as an active agent and a passivating agent in the reaction, and citric acid, citrate, glucose, fructose or amylase is taken as a carbon precursor, so that the fluorescence carbon quantum dot has good biologic security in the preparation and application process; and the cost is low since the microwave synthesis method is used.

The invention discloses preparation of solid fluorescent carbon dots and application thereof in an aspect of latent fingerprint detection, belongs to the technical fields of material synthesis and fingerprint detection. The solid fluorescent carbon dots are synthesized by adopting glutathione as a nitrogen/sulfur source and adopting citric acid as a carbon source by virtue of a microwave method. Raw materials are safe and easy to obtain, a preparation method is simple and rapid, and particles are safe and nontoxic. The surfaces of the solid fluorescent carbon dots (SFCDs) provided by the invention contain an amino, a sulfydryl and a carboxyl functional group, a particle size is 2 to 7 nm, and the solid fluorescence property is excellent. The SFCDs are used as a fingerprint developing agent and can develop the aged fingerprint, and the developing time can reach 30 days in an experimental range; and the solid fluorescent carbon dots can be applied to a liquid spray method and powder method, the two methods are complementary to each other, and the universality of the developing agent is improved.

The invention belongs to the field of preparation of nano composite materials, and relates to a method for preparing a NiCo2O4/graphene supercapacitor material with a microwave method. The main steps includes: using natural graphite as a raw material, oxidizing with a Hummers method to obtain graphite oxide, ultrasonically dispersing the graphite oxide in water, then adding cobalt chloride and nickel chloride, stirring and then adding urea, continuing to stir, then heating the mixed solution in a microwave reactor to 100 DEG C and carrying out a reflux reaction for 5 to 25 min, thereby obtaining a precursor, and calcining the precursor in an air atmosphere at 300 DEG C for 2h, thereby obtaining a porous flaky NiCo2O4/graphene supercapacitor material. The prepared composite supercapacitor material is synthesized through the microwave method, the preparation method is simple in technology, convenient to operate, high in feasibility, and rapid and efficient, and is easy to realize industrial implementation. The synthesized NiCo2O4 is tightly attached to the graphene, and excellent electrochemical performance is represented.

The invention relates to a method for reverse osmosis enriched water by microwave treatment. The method comprises the following steps: adding a process additive, ferrous sulfate and polyaluminium chloride into the reverse osmosis enriched water to perform the pretreatment; putting the pretreated enriched water into a microwave processor from the lower part of the microwave processor and taking out the pretreated enriched water from the middle and upper part of the microwave processor so as to ensure that the process additive, the ferrous sulfate and the polyaluminium chloride perform adequate physical and chemical reactions with the enriched water; guaranteeing that the yielding water of the microwave processor flows into a precipitation filtering unit automatically to realize stable drainage reaching the standards; and branching sludge to cause part of the precipitated sludge to be pumped back to the pretreatment reaction for recycling, and dehydrating the ineffective or residual sludge into dry sludge. The method is applicable to processing various organic waste water or mixed waste water which takes COD and heavy metal as the main pollutant and is hard to biodegrade; the method has the advantages of simple technical processes, convenient control, low treatment cost and less occupied space; in addition, the method fills in the domestic gap of the method for processing the new reverse osmosis enriched water generated in the recycling process of reclaimed water, and has good popularization value.

The invention belongs to the technical field of photoelectrochemical sensors, and particularly relates to a carbon quantum dot-nanowire array-based cardiomyocyte signal molecule sensor based on sunlight drive and a preparation method thereof. The preparation method comprises the following steps: under a hydrothermal system, growing a titanium dioxide nanowire array on a conductive glass substrate; obtaining silane-functionalized nitrogen-doped carbon dots (N-CDots) at one step in situ through using a microwave method; then placing titanium dioxide nanowires processed by concentrated sulfuric acid into an N-CDot ethanol solution, adding stronger ammonia water, standing and reacting, and defining as N-CDot-TiO2. The photoelectric current of the N-CDot-TiO2 is improved by almost two times compared with that of pure TiO2, and the prepared photoelectric current on-off sensor can be used for dynamically detecting the content of H2S star molecules of cardiomyocytes in real time in situ. The carbon quantum dot-nanowire array-based cardiomyocyte signal molecule sensor is smart in design and wide in the source of raw materials, the preparation method is simple, environment-friendly, low in price, fast to response, wide in linear range, high in selectivity, and beneficial to popularization and application.