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72results about How to "Pure chroma" patented technology
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Queen bee wine and brewing method thereof
The invention provides queen bee wine and a brewing method thereof. The queen bee wine contains bees and over 50-degree distilled spirits, wherein the bees can be honeybees and preferably are drone pupae, and can also be bee products such as royal jelly; and the ratio of the bees and / or the bee products to the distilled spirits is 1:2-1:10, preferably 1:3-1:7. The queen bee wine brewed by the method of the invention has the advantages of pure chroma and good mouthfeel.
Owner:谭德仁
Projector red and blue laser light source system
The invention discloses a projector red and blue laser light source system, comprising a first B-LD array, a fluorescence color wheel, a second B-LD array and a B reflector array, and being characterized in that an R area of the fluorescence color wheel is a red light transmission area, a B area is a blue light transmission area, and a G area is coated with green fluorescent powder; the system also comprises an R-LD array opposite to the second B-LD array, and an R reflection DM mirror array arranged in the light ray propagation direction of the R-LD array; a first RB reflector is arranged in the transmission direction of the fluorescence color wheel, a second RB reflector is arranged in the reflection direction of the first RB reflector, an RB reflection DM mirror is arranged in the reflection direction of the second RB reflector, and a light collection rod is arranged in the reflection direction of the RB reflection DM mirror; a G reflection DM mirror is arranged in the reflection direction of the fluorescence color wheel, and the RB reflection DM mirror is arranged in the reflection direction of the G reflection DM mirror. A color shift phenomenon of red laser obtained by the light collection rod is avoided, and the red color of a projector is reproduced very truly.
Owner:CHINA HUALU GRP
Preparation method and application of Eu<2+> doped fluorate luminescent material
ActiveCN105694886AGood chemical stabilityImprove luminous efficiencyLuminescent compositionsSemiconductor devicesFluorescencePhotoluminescence
The invention discloses a preparation method and application of a Eu<2+> doped fluorate luminescent material. Fluorescent powder is a rare earth ion activated fluorate material, the chemical formula is Ca2Nb2O6F, x represents the doping amount of Eu<2+>, and the value range of the x is larger than or equal to 0.0001 and smaller than or equal to 0.15. According to the fluorate luminescent material, the fluorate blue fluorescent powder gives out blue light of which the wave length ranges from 400 nanometers to 480 nanometers under excitation of ultraviolet light and can be applied to various lighting display taking the ultraviolet light as an excitation source and photoluminescence chrominance adjustment. According to the preparation method and application of the Eu<2+> doped fluorate luminescent material, a high temperature solid state method is adopted, the fluorescent powder which is uniform in granularity, good in dispersibility, high in luminous efficiency and good in chemical stability is obtained, the preparation method has low requirements on production cost and equipment, and industrial production is easy to carry out.
Owner:徐州博创建设发展集团有限公司
Nitride semiconductor white light light-emitting diode
ActiveCN108598225AImprove purityEvenly spacedNanotechnologySemiconductor devicesGreen-lightDislocation
The invention discloses a nitride semiconductor white light light-emitting diode. V-pits are filtered and dislocated through a nanometer dislocation filtering template to form uniformly distributed V-pits in a multi-quantum-well region; the V-pits comprise first V-pits and second V-pits; the multiple quantum wells between the first V-pits and the second V-pits give out blue light; a WS<2> / MoS<2> superlattice two-dimensional material is in the opening positions of the first V-pits to give out red light; a GaS / InSe superlattice two-dimensional material is in the opening positions of the second V-pits to give out green light; and the red light, green light and blue light are mixed to form white light, so that cost is lowered and the light emitting efficiency is improved.
Owner:LIMING VOCATIONAL UNIV
Fluoroborosilicate-based red phosphor, and preparation method and application thereof
ActiveCN104212457APure chromaHigh crystallinityLuminescent compositionsSemiconductor devicesChemical solutionPhotoluminescence
The invention discloses a fluoroborosilicate-based red phosphor, and a preparation method and an application thereof. The chemical structural formula of the phosphor is BaR<III>6(Si3B6O24)F2:xEu<3+>, wherein R<III> is one of La<3+>, Ce<3+>, Pr<3+>, Nd<3+>, Sm<3+>, Gd<3+>, Tb<3+>, Dy<3+>, Ho<3+>, Er<3+>, Yb<3+>, Lu<3+> and Y<3+> ions; and x is the mole percentage coefficient of the replacement of R<III> by Eu<3+>, and x is not less than 0.0001 and not more than 1. The phosphor is prepared through adopting a high temperature solid phase technology or a chemical solution technology, and can emit red fluorescence with the dominant wavelength nearby 595nm under the excitation of near ultraviolet light with the wavelength of 380-410nm. The fluoroborosilicate-based red phosphor has the characteristics of high crystallization degree, substantial luminescence efficiency and simple preparation method, and can be used in various illumination displays with the near ultraviolet light as an excitation source, and photoluminescence chroma adjustment.
Owner:苏州三木知识产权服务有限公司
Eu3+doped tantalite red fluorescent powder and preparing method and application
ActiveCN106544022AImprove physicsGood chemical propertiesEnergy efficient lightingLuminescent compositionsUltravioletChemical stability
The invention discloses a Eu3+doped tantalite red fluorescent powder and a preparing method and application therefore. The fluorescent powder is La2-2xEu2xTa12O33, wherein x is the Eu3+doped chemical metering score and is larger than or equal to 0.001 and smaller than or equal to 0.20, the high-temperature solid phase method is adopted, rare earth ions are added, and the Eu3+doped tantalite red fluorescent powder is prepared. The Eu3+doped tantalite red fluorescent powder can be effectively excited by near ultraviolet light and blue light nearby 250 nanometers to 475 nanometers, the emission wavelength of the Eu3+doped tantalite red fluorescent powder and the emission wavelength of a near-ultraviolet LED chip are quite coincident, and under excitation of the near ultraviolet light, the fluorescent powder can emit bright red fluorescence, the emission wavelength is mainly 612 nanometers, and the red fluorescence has the quite-wide excitation spectrum and the quite-wide luminescence spectrum; the obtained granularity is even, the luminous efficiency is high, the chemical stability is good, toxic gas such as sulfide cannot be generated under ultraviolet radiation, the environment is friendly, and the Eu3+doped tantalite red fluorescent powder can be applied to white light LED and the other luminous fields; in the preparing process, compounds with elements required by synthetic materials are mixed in proportion, the high-temperature solid phase method is adopted, the technology is simple, the Eu3+doped tantalite red fluorescent powder is free of pollution, environmentally friendly and suitable for industrial production.
Owner:NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
Preparation method of zero-dimensional and two-dimensional hybridized all-carbon white fluorescent powder
ActiveCN107418568ASufficient raw materialsLow costMaterial nanotechnologyNanoopticsLuminous intensityQuenching
The invention discloses a preparation method of zero-dimensional and two-dimensional hybridized all-carbon white fluorescent powder. The method comprises the steps of adopting anhydrous citric acid as a carbon source and alkylamine as a passivator, carrying out hydrothermal reaction to prepare the zero-dimensional and two-dimensional hybridized all-carbon white fluorescent powder. The fluorescent powder comprises zero-dimensional carbon quantum dots and two-dimensional carbon nanosheets; the defects of aggregation of the carbon quantum dots and optical quenching after film formation are effectively inhibited through the two-dimensional nanosheets; the film and the powder emit white light with high luminous intensity and pure chromaticity.
Owner:NANJING UNIV OF TECH
Europium-ion/manganese-ion-codoped barium yttrium phosphate red fluorescent powder and preparation method thereof
The invention discloses a europium-ion / manganese-ion-codoped barium yttrium phosphate red fluorescent powder and a preparation method thereof. The chemical formula of the fluorescent powder is Ba3Y[(1-x-y)]EuxMny(PO4)3, wherein x is 0.001-0.2, and y is 0.001-0.2. The preparation method adopts a high-temperature solid-phase process and comprises the following steps: respectively weighing a Ba<2+>-containing compound, a Y<3+>-containing compound, a Mn<2+>-containing compound a Eu<3+>-containing compound and a P<5+>-containing compound according to the stoichiometric proportion of the elements in the fluorescent powder chemical formula, grinding and mixing uniformly, presintering the obtained mixture at 300-500 DEG C for 0.5-4 hours, cooling, sintering at 1150-1350 DEG C for hours, and cooling. The phosphate-base red fluorescent powder can be effectively excited by near-ultraviolet light and blue light to emit the red light of which the main peak wavelength is 611nm, and has the advantages of high luminescent intensity and pure chroma; and the preparation method does not discharge wastewater or waste gas, and thus, is environment-friendly.
Owner:LUOYANG INST OF SCI & TECH
Method for producing chicken-oil-yellow glass, glass and embossment processing technology based on glass
ActiveCN102491638AColorfulUniform colorDecorative surface effectsSpecial ornamental structuresSurface finishingRaw material
Provided are a method for producing chicken-oil-yellow glass, glass, and an embossment processing technology based on glass. The method comprises the steps of firstly mixing various materials to form mixed raw materials, feeding the mixed raw materials when furnace temperature reaches to 1360 DEG C, keeping the temperature to be at 1400 DEG C to melt and sinter the mixed raw materials for 6 hours, beginning to perform production after stopping heating for 1 hour and then producing the glass; performing surface treatment to produced chicken-oil-yellow glass blank after producing glass blank; performing carve by using cutting tools; and finally coloring and embellishing carved patterns or characters through pigments. The production of the chicken-oil-yellow glass and embossment art works made of the chicken-oil-yellow glass is suitable for glass manufacturers.
Owner:孙云毅
Preparation process of composite fruit wine
InactiveCN110042032AReduce lossesGreat tasteMicroorganism based processesAlcoholic beverage preparationVitamin CAdditive ingredient
The invention discloses a preparation process of composite fruit wine. The process comprises the following steps: mixing, crushing and fermenting kiwifruits, peaches, food-grade vitamin C and potassium pyrosulfite, respectively fermenting the obtained juice and peel residues under a certain condition to obtain pre-fermentation liquor A and pre-fermentation liquor B, fermenting and clarifying the pre-fermentation liquor A and the pre-fermentation liquor B under a certain condition to obtain clarified fruit wine, uniformly mixing purified water, the prepared apple ferment and the clarified fruitwine, adjusting the alcohol content to 10-12 degrees by using the prepared distilled wine, and performing filling and sterilization to obtain the composite fruit wine. The composite fruit wine produced by the process effectively retains nutritional ingredients, so that a large amount of beneficial ingredients in the fruits such as vitamins, trace elements including zinc, iron, calcium and selenium, amino acids, proteins and pectin are not easy to get lost. The fruit wine is good in taste, pure in chroma, clear and transparent, combines the nutrients of kiwifruits, peaches, apples, peach blossoms and brown sugar, has a unique flavor and strong fruit fragrance, and is particularly suitable for women to drink.
Owner:NANYANG NORMAL UNIV
Europium ion-activated red luminescent nano fluorescent powder and preparation method and application
ActiveCN106947481AHigh color rendering indexSimple preparation processEnergy efficient lightingLuminescent compositionsCorrosion resistantChemistry
The invention discloses europium ion-activated red luminescent nano fluorescent powder, a preparation method and an application. A chemical formula of the material is Bi<1-x>Eu<x>SbP<4>O<14>, wherein x is a mole ratio of Bi<3+> ions replaced with trivalent europium ions Eu<3+>, the range of the mole ratio is 0.001<=x<=0.25. The red luminescent nano phosphor powder is capable of emitting pure red light of which the main wavelength is 614 nm under the excitation of ultraviolet light, near ultraviolet light and blue light, and can be applied to various lighting and display devices employing the ultraviolet light, the near ultraviolet light and the blue light as excitation sources to modulate the color temperature of a light source and to improve the color rendering index. The red luminescent nano fluorescent powder is small in particle and uniform in particle size, can be mixed with blue and green fluorescent powder, coats the outside of an InGaN diode and is packaged outside the InGaN diode; an LED capable of emitting warm white light is prepared; a matrix is stable, corrosion-resistant, light in light-emitting efficiency, nontoxic and pollution-free; and the preparation process is very easy to operate and industrially produce.
Owner:NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
Red fluorescent material capable of being excited by near-ultraviolet light, preparation method and application
ActiveCN107099291AModulate color temperatureEffective light absorptionEnergy efficient lightingLuminescent compositionsSemiconductor chipRare earth
The invention discloses a red fluorescent material capable of being excited by near-ultraviolet light, a preparation method and application. A chemical formula is Ca[5-5x]Eu5xNb4Ti3O21, wherein x is a molar ratio as rare earth europium ion Eu<3+> substituting Ca (calcium) ion, and is greater than or equal to 0.0001 or smaller than or equal to 0.20. The red fluorescent material has the advantages that the red light with a peak value of about 615 nanometers can be transmitted in the near-ultraviolet area with exciting light of 350 to 420 nanometers, the chromaticity coordinate value of the light emitting is red light with x is equal to 0.625-0.655 and y is equal to 0.345-0.375, and the chromaticity is pure; the exciting wavelength is closely matched with near-ultraviolet semiconductor chips of InAlGaN, InGaAs and the like, and can be used as a deep red component in LED (light emitting diode) and WLED (white light emitting diode) of multi-primary color energy-saving fluorescent light sources, so as to modulate the color temperature of the light source and improve the color displaying index; a matrix is stable and can resist corrosion, the light emitting efficiency is high, and the toxicity and the harm are avoided. The preparation method has the advantages that the method is simple, the operation is easy, the requirement on production conditions and equipment is low, the cost is low, any pollution is avoided, and the preparation method is suitable for industrialized production.
Owner:NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
Green fluorescent ceramic material, and preparation method and applications thereof
ActiveCN106915955AImprove physicsGood chemical propertiesLuminescent compositionsSpectral modifiersUltraviolet lightsBiological materials
The invention discloses a green fluorescent ceramic material, and a preparation method and applications thereof, and belongs to the technical field of organic fluorescent material. The chemical formula of the green fluorescent ceramic material is Ca<10-10x>Tb<10x>Si<3>O<15>F<2>, wherein x is used for representing Tb<3+> doping chemometry percentage, and 0.001<=x<=0.20. Excitation of the green fluorescent ceramic material can be realized by ultraviolet light with a wavelength of about 200 to 380nm, the emission wavelength is anastomotic with that of near ultraviolet LED chips; under near ultraviolet excitation, the green fluorescent ceramic material is capable of emitting bright green fluorescence, and the emission wavelength is most 550nm; the green fluorescent ceramic material is high in luminous efficiency and chemical stability; no toxic gas such as sulfide is generated under ultraviolet radiation; the green fluorescent ceramic material is friendly to the environment, can be applied in the fields such as white light LED and other fluorescent areas; in preparation, compounds containing elements needed by the synthesis biological material are mixed at a certain ratio, and hot pressing calcining is carried out; the preparation method is simple; no pollution is caused; and the preparation method is friendly to the environment, and is suitable for industrialized production.
Owner:XUZHOU NORMAL UNIVERSITY
Molybdate-based red phosphor powder for white LED and preparation method thereof
ActiveCN104818017APure chromaIncrease brightnessEnergy efficient lightingLuminescent compositionsUltravioletHeat stability
The invention relates to molybdate-based red phosphor powder for white LED and a preparation method thereof. The molybdate-based red phosphor powder has a chemical formula of Na2-2xEu2xZn2Mo2O9, wherein x is greater than or equal to 0.001 and less than 1.0. The molybdate-based red phosphor powder utilizes novel molybdate as a base material, produces strong stimulation nearby near ultraviolet and blue light, can emit red fluorescence with a peak value at the wavelength of about 625nm, has high luminous efficiency, good heat stability, pure color, high brightness and environmental friendliness, does not produce toxic gas such as sulfides under ultraviolet radiation, is environmentally friendly and can be used in the white LED field and other luminescence fields. The preparation method has simple and flexible processes, utilizes abundant sources, has a low sintering temperature of 550-900 DEG C substantially lower than preparation temperatures (of 1200 DEG C or more) of silicate and aluminate systems, has low equipment requirements and saves energy.
Owner:徐州博创建设发展集团有限公司
Molybdate upconversion luminescent material, preparation method and application thereof
InactiveCN104031644BThe synthesis process is simpleGood repeatabilityLuminescent compositionsChemical synthesisStructural formula
The invention discloses a molybdate up-conversion luminescent material, a preparation method and application thereof. The structural formula of the molybdate up-conversion luminescent material is ZnR(4-4(x+y))Mo3O16:4xEr<3+>,4yYb<3+>, wherein x and y are the mole percent of doped Er<3+> and Yb<3+> respectively, xis more than or equal to 0.0001, y is more than or equal to 0.1, and x+y is larger than 0.1 and smaller than 1.0. According to the molybdate up-conversion luminescent material, the Yb<3+> is taken as a sensitized ion, so that the up-conversion luminescence of the Er<3+> is achieved; the excitation wavelength is 970 nanometers; a luminescent peak is formed through the energy level transition <2>H(11 / 2)-<4>I(15 / 2), <4>S(3 / 2)-<4>I(15 / 2), <4>F(9 / 2)-<4>I(15 / 2) of the Er<3+> within the wavelength range of 500-700 nanometers. The molybdate up-conversion luminescent material prepared by adopting a high-temperature solid phase method or a chemical synthesis method is high in color purity and stable in property and can be applied to the fields of counterfeiting prevention, biological molecule fluorescence labeling, three-dimensional display and the like.
Owner:SUZHOU UNIV
Terbium ion doped yttrium phosphate barium green phosphor and preparation method thereof
InactiveCN104610969ANo emissionsHigh luminous intensityLuminescent compositionsPhosphateUltraviolet lights
The invention discloses terbium ion doped yttrium phosphate barium green phosphor and a preparation method thereof. The chemical constitution of the green phosphor is Ba3Y(1-x)Tbx (PO4)3, wherein x is between 0.001 to 0.2, the phosphor is prepared by adopting high-temperature solid-phase method which comprises the following steps of firstly weighing a compound containing Ba<2+>, a compound containing Y<3+>, a compound containing terbium ions and a compound containing P<5+> respectively according to the stoichiometric ratio of each element in the chemical formula of the phosphor, grinding and mixing the compounds, presintering the obtained mixture at 300-500 DEG C for 0.5-4 hours, cooling, then sintering the mixture at 1,150-1,350 DEG C for 4-16 hours, and cooling. The green phosphor can be effectively activated by near ultraviolet or ultraviolet light and can emit green light with a main peak wavelength of 542 nanometers, the light-emitting intensity is high, the chroma is pure, good heat stability can be provided, no waste water or waste gas is discharged according to the preparation method, and the preparation method is environmentally friendly.
Owner:LUOYANG INST OF SCI & TECH
Cr<3+> ion-activated near-infrared fluorescent powder, preparation method and application thereof
ActiveCN110964523APure chromaImprove luminous efficiencyLuminescent compositionsNear infrared laserPhysical chemistry
Belonging to the technical field of inorganic fluorescent powder materials, the invention relates to a Cr<3+> ion-activated near-infrared fluorescent powder, a preparation method and application thereof. The chemical formula of the Cr<3+> ion-activated near-infrared fluorescent powder is NaAl1-xCrxVPO7, wherein x is the molar ratio of Cr<3+> doping substituted Al<3>, and x is greater than or equalto 0.001 and less than or equal to 0.1. The preparation method includes: according to the stoichiometric ratio of each element in the chemical formula NaAl1-xCrxVPO7, weighing compounds containing ions of the elements, respectively carrying out wet grinding on the weighed raw materials with acetone as a grinding aid, mixing the substances uniformly, and then conducting calcining for two times tofinish preparation. The synthesis method has the characteristics of simple process, convenient operation, low equipment requirement, energy-saving and environmental friendliness, and the prepared powder has high luminous efficiency and good stability. After ultraviolet excitation, the fluorescent powder can emit red light of about 703 nanometers, the Cr<3+> ion-activated fluorescent powder can beapplied to near-infrared lasers, and provides more material choices are provided for solid-state lasers.
Owner:XUZHOU NORMAL UNIVERSITY
Red phosphor activated by europium ions Eu3+, preparation method and application
ActiveCN109777421ANo pollution in the processStrong excitationLuminescent compositionsSemiconductor devicesVanadateEu element
The invention relates to vanadate red phosphor activated by europium ions Eu3+, a preparation method and application, and belongs to the technical field of inorganic light emitting materials. The chemical formula of the phosphor is CaBiLa1-xEuxV2O9, wherein x is a mole ratio of doped Eu3+ to substituted lanthanum ions La3+ and is greater than or equal to 0.001 and smaller than or equal to 0.15. The prepared phosphor is synthesized by a sol-gel method, the preparation method is simple and environmentally friendly, the raw material and the preparation cost is low, the powder purity is high, thecrystallinity is good, the performance is stable, the phosphor has a wide excitation band in a near-ultraviolet region, and the emission wavelength of a near-ultraviolet LED chip is well matched; under the excitation of the near-ultraviolet wavelength, an obtained red light spectrum is a sharp jump emission peak at 613 nm and has very pure chromaticity; the light emitting efficiency is high, and the stability is high.
Owner:CHANGZHOU VOCATIONAL INST OF ENG
Preparation method of red-light-emitting glass
ActiveCN108059338AHigh luminous intensityIncrease brightnessGlass furnace apparatusRare earthRoom temperature
The invention discloses a preparation method of red-light-emitting glass. The preparation method comprises the following steps: firstly, uniformly mixing Tb2O3, B2O3, Ga2O3, Eu2O3, Y2O3, SiO2, GeO2 and Sb2O3 until the uniformity is greater than 98 percent, so as to obtain a mixed batch; then melting the mixed batch to obtain glass liquid; pouring the glass liquid into a graphite mold and shaping at 250 to 380 DEG C; then putting a product into a furnace at 710 DEG C and preserving heat for 3h; then cooling to room temperature to obtain transparent red-light-emitting glass. The red-light-emitting glass prepared by the technology has high light emitting strength, high brightness, low melting temperature, good glass formation performance, simple preparation technology, good thermal stabilityand good chemical stability. The rare-earth doped glass has good light transparency and great density and a melting technology is simple and is very suitable for industrial large-scale production.
Owner:SHAANXI UNIV OF SCI & TECH
Method for making white-light organic light-emitting-diode
InactiveCN100454608CPure chromaSuitable color temperatureSolid-state devicesSemiconductor/solid-state device manufacturingLight-emitting diodeLuminescent material
The method includes steps of vacuum depositing following layer by layer: (1) vacuum depositing a layer of material for holes transport and luminescence capable of generating electricity excitated association object; (2) vacuum depositing a layer of material for electrons transport and luminescence; (3) vacuum depositing a layer of cavity barrier material and a layer of electrons transport material; (4) vacuum depositing a layer of cathode. The disclosed white light OLED possesses features: quite pure chroma, color coordinate closed to pure white light, higher brightness, and luminous efficiency, and suitable color temperature for requirement of illumination. Selecting suitable material for super thin electrons transport and luminescence, the invention adjusts color of luminescence so as to obtain pure white light.
Owner:INST OF CHEM CHINESE ACAD OF SCI
Patterned quantum dot color film, preparation method thereof, and display device
InactiveCN109471332AIncrease brightnessImprove color gamutPhotomechanical exposure apparatusMicrolithography exposure apparatusDisplay deviceQuantum dot
The invention relates to the technical field of display, and particularly relates to a patterned quantum dot color film, a preparation method thereof, and a display device. The patterned quantum dot color film provided by the invention comprises a transparent substrate, an organic color photoresist layer and a quantum dot photoresist layer, wherein the organic color photoresist layer and the quantum dot photoresist layer are arranged on the transparent substrate.
Owner:BEIJING SINEVA TECH +1
How to make kiwi fruit wine
The invention discloses a brewing method of kiwi fruit wine. The brewing method comprises the following steps: (1) pretreating kiwi fruits; (2) pretreating pomegranate fruits; (3) preparing fruit pulp; (4) fermenting to obtain kiwi fruit wine; (5) preparing kiwi fruit alcoholic drink rich in fruity flavor; (6) adjusting the alcohol content; and (7) mixing to prepare the kiwi fruit wine. The brewing method provided by the invention is simple in technology and strong in operability, the produced kiwi fruit wine is high in yield. The obtained kiwi fruit wine is good in mouthfeel and pure in color, is clear, transparent and chartreuse, has the nutrition of kiwi fruits and pomegranate fruits, and is unique in flavor, and strong in fruity flavor.
Owner:河南伏牛山生物科技股份有限公司
Eu<3+> ion activated aluminophosphate fluorescent ceramic, and preparation method and application thereof
ActiveCN111138185AThe synthesis process is simpleEasy to operateLuminescent compositionsSemiconductor devicesFluorescencePhosphate
The invention relates to Eu<3+> ion activated aluminophosphate fluorescent ceramic, and a preparation method and an application thereof, belonging to the technical field of inorganic fluorescent ceramic materials. The Eu<3+> ion activated aluminophosphate fluorescent ceramic has a chemical general formula of Li9Al<3-3x>Eu<3x>P8O29, wherein x is a molar ratio of Eu<3+> that dopes and substitutes Al<3+>, and x is no less than 0.001 and no more than 0.15. The preparation method provided by the invention comprises the following steps: according to the stoichiometric ratio of elements in the chemical formula of Li9Al<3-3x>Eu<3x>P8O29, weighing compounds containing ions of the elements, respectively carrying out wet grinding on the weighed raw materials by using acetone as a grinding auxiliary agent, carrying out uniform mixing, and carrying out calcining twice so as to complete preparation. The synthesis method provided by the invention is simple in process, convenient to operate, low in equipment requirement, energy-saving and environmentally-friendly; and the prepared powder is high in luminous efficiency and good in stability. The red fluorescent ceramic activated by the Eu<3+> ionscan be widely applied to lighting and display devices.
Owner:XUZHOU NORMAL UNIVERSITY +1
Dysprosium-ion-doped yttrium-barium phosphate fluorescent powder and preparation method thereof
InactiveCN105112055AImprove luminous efficiencyHigh luminous intensityLuminescent compositionsFluorescencePhosphate
The invention discloses dysprosium-ion-doped yttrium-barium phosphate fluorescent powder and a preparation method thereof. The fluorescent powder has the chemical formula shown as follows: Ba3Y(1-x)Dyx(PO4)3, wherein x is selected from 0.001 to 0.2. Y<3+> is substituted with Dy<3+> to obtain yellow green fluorescent powder which is high in crystalline degree, high in light intensity and good in color rendering index. The fluorescent powder can be effectively excitated by ultraviolet light to emit blue light with the wavelength of 480nm and yellow fluorescent light with the wavelength of 573nm and is yellow green fluorescent powder which can be used for white-light LEDs or energy-saving lamps. The preparation method disclosed by the invention is simple and convenient to operate, low in production cost and equipment requirement; the obtained dysprosium-ion-doped yttrium-barium phosphate fluorescent powder is stable in quality; and industrial production is easily realized.
Owner:LUOYANG INST OF SCI & TECH
Vanadium-barium tungstate self-activation luminescent material, preparation methods and application
InactiveCN103468259BPromote absorptionHigh luminous intensityLuminescent compositionsHigh energyTungstate
Owner:ANHUI XINDE CHEM FIBER
Treatment method of copper material production circulating water
InactiveCN110655230ASave land occupation and infrastructure investmentSmall head lossWater treatment parameter controlSludge treatmentEnvironmental chemistryWater tanks
The invention provides a treatment method of copper material production circulating water. The treatment method comprises the following steps: S1, discharging circulating water into an adjusting tank,and adding an alkaline reagent through an automatic dosing device to adjust the pH value of the circulating water to 8-9; S2, pumping the circulating water with the adjusted pH value, obtained in step S1 into a coagulation and precipitation integrated device, performing flocculation treatment, and then performing precipitation to obtain a supernatant and bottom sludge; S3, pumping the supernatantobtained in step S2 into an intermediate water tank, pumping the supernatant into a filter tank when the liquid level reaches a certain degree, carrying out adsorption and filtration treatment, discharging obtained purified water into a clear water tank, and directly returning the purified water to the production process for use or discharging the purified water; and S4, pumping the sludge obtained in the step S2 into a sludge tank, pumping the sludge into a sludge compression device when the sludge is accumulated to a certain amount, performing filter pressing treatment, and discharging theobtained filtrate back into the adjusting tank, for treatment, through a pipeline. The method has a good purification effect on the circulating water, and the purified water is approximately neutral,has a pure chromaticity, and can be directly recycled or discharged outwards.
Owner:GANZHOU JIANGWU NEW TYPE ALLOY MATERIAL
Preparation of manganese-doped willemite yellow fluorescent powder
InactiveCN101439860BLow reaction temperatureDoping concentration variableSilicon compoundsLuminescent compositionsSilicic acidSilicon dioxide
Owner:XIAMEN UNIV
Rosa chinensis enzyme and preparation method thereof
The invention provides a rosa chinensis enzyme and a preparation method thereof. The preparation method comprises the following steps: adopting barley, grains, fruits and vegetables and edible fungusas well as fresh rosa chinensis as main raw materials, firstly cleaning the barley and the grains, air drying, pulping, stirring, adding amylase until the material is completely liquefied, sterilizing, transferring into a fermenting tank, adding glucoamylase and rhizobacterial enzyme, and performing the fermentation; after the fermentation, adding acetic bacteria dry powder to perform the secondary fermentation; adding diced and juiced chaenomeles speciosa, kiwi fruits, shiitake mushroom and rosa chinensis juice into the secondary fermented solution, uniformly stirring the fruit and vegetablejuice and the secondary fermented solution, adding lactobacillus viable dry powder, performing the tertiary fermentation to obtain an enzyme stock solution; and centrifuging the enzyme stock solution,collecting supernatant, filtering, adding rocky candy powder and erythritol, canning, and sterilizing, thus obtaining the rosa chinensis enzyme. The rosa chinensis enzyme adopts the barley, the grains, the fruits and vegetables and the edible fungus as well as the fresh rosa chinensis as main raw materials, and the multilevel fermentation of various strains is used for replacing the traditional combined fermentation, so that the product quality is easy to control, and the time is relatively short.
Owner:NANYANG NORMAL UNIV
Blue fluorescent powder for violet LED and preparation method thereof, and illumination light source prepared from blue fluorescent powder
InactiveCN106244144ASmall particlesUniform grainLuminescent compositionsSemiconductor devicesLuminous intensityHydrogen atmosphere
The invention relates to a blue fluorescent powder for a violet LED and a preparation method thereof, and an illumination light source prepared from the blue fluorescent powder. The blue fluorescent powder has a chemical structural formula of M[10-y](P[1-3b / 5]N[b]O[4])[6]X[2]:yEu<2+>, wherein M is selected from one or two of Ca, Sr, Ba and Mg, X is one or two of F and Cl, y represents the molar coefficient, 0<y<1, b represents the atom number of N replacing P, and 0<b<5 / 3. The fluorescent powder prepared by adopting a reduction hydrogen atmosphere and an ammonium chloride atmosphere has strong absorption at 250 nm-420 nm, has the emission spectrum in the range of 430 nm-550 nm, and has the characteristics of good crystallinity, and high luminous intensity. A luminescent material is matched with ultraviolet or near ultraviolet LED and other luminous materials such as a green fluorescent powder and a red fluorescent powder to prepare a high-color-developing white LED light source.
Owner:西安鸿宇光电技术有限公司 +1
A kind of green fluorescent ceramic material, preparation method and application thereof
ActiveCN106915955BImprove physicsGood chemical propertiesLuminescent compositionsSpectral modifiersFluorescenceUltraviolet lights
The invention discloses a green fluorescent ceramic material, a preparation method and an application thereof, the chemical formula of which is Ca 10‑10x Tb 10x Si 3 o 15 f 2 , where x is Tb 3+ The stoichiometric fraction of doping, 0.001≤x≤0.20, belongs to the technical field of inorganic luminescent materials. The fluorescent ceramic material prepared by the present invention can be excited by ultraviolet light near 200-380 nanometers, which is very consistent with the emission wavelength of the near-ultraviolet LED chip. Under the excitation of near-ultraviolet light, the fluorescent ceramic can emit bright green fluorescence. The wavelength is mainly 550nm; the obtained fluorescent ceramic material has high luminous efficiency and good chemical stability, and will not produce toxic gases such as sulfide under ultraviolet radiation. Compounds containing elements required for synthesizing biological materials are mixed in proportion, and then calcined by hot pressing. The process is simple, free of any pollution, friendly to the environment, and suitable for industrial production.
Owner:XUZHOU NORMAL UNIVERSITY
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