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Preparation method and application of heterojunction photoelectrode
ActiveCN105044180AGood chemical stabilityGood photoelectrochemical performanceMaterial electrochemical variablesBi layerHydrothermal synthesis
The invention belongs to the technical field of photoelectrochemistry, and particularly relates to a preparation method and the application of a heterojunction photoelectrode. The preparation method comprises the steps of firstly forming a double-layer TiO2 nano-rod array on an FTO substrate; then, uniformly coating the double-layer TiO2 nano-rod array with a layer of oxidized-reduced grapheme by utilizing a spin coating method; finally, loading CdS@Au core-shell-structured nano particles on the surface of oxidized-reduced grapheme / TiO2 by using a chemical deposition method and a photo-deposition method. An Au@CdS / RGO / TiO2 heterojunction photoelectrode which is prepared by utilizing a simple hydrothermal synthesis method, the spin coating method, the chemical deposition method and the photo-deposition method has the advantages of good chemical stability and good photoelectrochemical performance. The preparation method disclosed by the invention has the advantages that the technology is simple, the repeatability is good, materials which are used are cheap and are easy to get, and the requirement on environmental friendliness is met.
Owner:常熟市知识产权运营中心有限公司
Method for preparing square bismuth oxychloride with adjustable thickness through hydrothermal method
InactiveCN110550657AGood photocatalytic activitySimple processWater/sewage treatment by irradiationWater treatment compoundsChemistryBatch production
The invention discloses a method for preparing square bismuth oxychloride with the adjustable thickness through a hydrothermal method. The method comprises the steps that Bi(NO3)3.5H2O and mannitol are dispersed in 50-100 ml ultrapure water at the molar ratio of 1:50, and stirring is conducted for 10-30 min till the Bi(NO3)3.5H2O and the mannitol are totally dissolved; then polyvinylpyrrolidone isadded, stirring is conducted till 10-20 min after full dissolving, then 5-10 mL of a saturated sodium chloride solution is added, stirring is conducted for 10-20 min, and then a mixture is transferred into a hydrothermal reactor for a hydrothermal reaction for 2-5 h at 150-180 DEG C; and after cooling, obtained precipitate is centrifuged, repeatedly washed with the ultrapure water and ethyl alcohol, and dried at 60-80 DEG C to obtain BiOCl photocatalytic materials with different thicknesses. The method is quite simple in technology, the BiOCl photocatalytic materials are low in cost and easyto obtain, the cost is low, the reaction time is short, thus energy consumption and the reaction cost are reduced, batch production is facilitated, the poisonless and harmless effects are achieved, and environmentally friendly requirements are met.
Owner:HOHAI UNIV
Composite graphite phase carbon nitride heterojunction photocatalyst preparation method
InactiveCN110624583AUniform and stable dopingFacilitate catalytic reactionsPhysical/chemical process catalystsHydrogen productionHeterojunctionIndium
The invention discloses a composite graphite phase carbon nitride heterojunction photocatalyst preparation method, relates to a catalyst preparation method, and provides a preparation method of a novel silver ion doped zinc thioindate composite graphite phase carbon nitride (Ag:ZnIn2S4 / g-C3N4) heterojunction photocatalyst for enhancing the photocatalytic activity of visible light, wherein silver nitrate, zinc acetate, indium acetate, thioacetamide and graphite-phase carbon nitride are subjected to a reaction according to a ratio under a hydrothermal condition to obtain the target photocatalyst. According to the invention, the novel visible light photocatalyst is clear in structure and definite in composition; by doping with Ag<+>, the photon utilization rate of ZnIn2S4 can be obviously enhanced; after compounding with g-C3N4, the diffusion range of photon-generated carriers can be enlarged, and the recombination of photon-generated electron-hole pairs is inhibited, so that the catalytic activity of visible light is enhanced; the Ag:ZnIn2S4 / g-C3N4 composite material has wide prospect in the field of clean energy production and energy conversion based on high visible light activity and good hydrogen production capacity; and the obtained catalyst has broad application prospect.
Owner:SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
Method for controllably synthesizing different shapes of niobium pentoxide nanomaterials without template hydrothermal heat
The invention belongs to the technical field of inorganic nanomaterials, and particularly relates to a method for controllably synthesizing different shapes of niobium pentoxide nanomaterials withouttemplate hydrothermal heat. The method specifically comprises the following steps: firstly, mixing a certain amount of niobium inorganic matter ionic salt with a precipitant according to a certain ratio, and respectively dissolving into three different solvents; then performing ultrasonic treatment for 15-30 minutes, completely dissolving solid powder and evenly mixing; and finally, respectively transferring the three solutions into a reaction kettle with a polytetrafluoroethylene substrate, sealing, putting into a drying oven, controlling the temperature of the drying oven to be 180-200 DEG C, reacting for 8-12 hours, and after the reaction is over, cooling the product to be at room temperature; centrifugally separating the precipitated product, collecting solids, rinsing for multiple times with deionized water and absolute ethyl alcohol, and performing vacuum drying, to obtain the niobium pentoxide nanobars, nanowires and nanoribbon materials.
Owner:JIANGSU UNIV
Preparation method and application of photocatalysis nanometer material for degrading TC (tetracycline)
InactiveCN108187669AGood chemical stabilitySimple processWater/sewage treatment by irradiationWater contaminantsHydrothermal synthesisMaterials preparation
The invention belongs to the technical field of inorganic nanometer material and environment material preparation, and relates to a novel Ag-SrTiO3 nanometer material as well as a preparation method and application thereof. According to the nanometer material, an Ag<+> doped SrTiO3 photocatalyst is successfully prepared by a one-step hydrothermal synthesis method; under the visible light irradiation, the TC is subjected to photodegradation. Experiments find that the Ag<+> doping quantity is 1.5 to 5 weight percent. Photocatalysis experiments show that the prepared Ag-SrTiO3 photocatalyst has ahigh effect in the TC degradation rate aspect. Through the comparation with pure SrTiO3 under the visible light irradiation, particularly the doping quantity of an Ag-SrTiO3 sample is 3 percent, high-efficiency TC degradation rate (79.63 percent) is shown in 120min. The response range of the SrTiO3 photocatalyst is expanded by Ag<+> doping, so that the visible light response is effectively realized. The invention aims at providing a semiconductor material with simple process and shape being the spherical nanometer structure; the advantages of good chemical stability and the like are realized;a good photodegradation effect is achieved on TC wastewater. The catalyst has the advantages that the preparation process is simple; the photocatalytic activity is high, and the like.
Owner:CHANGZHOU UNIV
Foamed nickel-based NiCo2O4/MoS2 composite electrode material and preparation method thereof
PendingCN107316757ALower impedanceImprove conductivityHybrid capacitor electrodesHybrid/EDL manufactureCapacitanceComposite electrode
The invention belongs to the technical field of a composite electrode material. The NiCo2O4 / MoS2 composite electrode material is synthesized by a two-step hydrothermal method and can be used for researching performance of a two-electrode system. The NiCo2O4 / MoS2 composite electrode material is synthesized by the moderate two-step hydrothermal method, foamed nickel is used as a substrate, a synthesis material is directly grown on the foamed nickel, an adhesive is prevented from being used, the material impedance is reduced, and meanwhile, the material conductivity is improved to a great extent by the foamed nickel substrate; and generally, the conductivity of a transition metal oxide (NiCo2O4) is lower than that of a sulfide (MoS2), the cycle stability of the NiCo2O4 is also relatively low, while the theoretical capacity of NiCo2O4 is relatively high. Therefore, by combining the NiCo2O4 and the MoS2 to form the composite electrode material, the conductivity and the cycle stability of the material can be effectively improved, and high specific capacitance of the material is simultaneously maintained.
Owner:JIANGSU UNIV
Bismuth trioxide nanotubes prepared by microwave-assisted liquid-phase process and application thereof
InactiveCN103112894AGood chemical stabilitySimple processMaterial nanotechnologyWater/sewage treatment by irradiationIonPhotocatalytic degradation
The invention relates to a method for preparing bismuth trioxide (Bi2O3) nanotubes by a microwave-assisted liquid-phase process and application of the bismuth trioxide (Bi2O3) nanotubes in photodegradating tetracycline-containing wastewater. The preparation method comprises the following steps: magnetically stirring proper amounts of Bi(NO3)3.5H2O and Na2SO4 to form a mixed solution, carrying out ultrasonic dispersion on NaOH and deionized water to form a sodium hydroxide transparent solution, and dropwisely adding the sodium hydroxide transparent solution into the Bi(NO3)3.5H2O / Na2SO4 mixed solution; and continuously heating in a reactor with the microwave power of 800W to obtain the product, centrifuging, washing and drying to obtain the bismuth trioxide (Bi2O3) nanotubes with uniform appearance. The invention has the advantages of simple technique and reproducibility; and the raw materials are cheap and accessible inorganic compounds, are low in cost, do not need pretreatment of high temperature and calcining, and have the advantages of low synthesis temperature and short reaction time, thereby lowering the energy consumption and reaction cost and facilitating the mass production. Since the bismuth trioxide (Bi2O3) has strong photocatalytic degradation capacity for tetracycline, the invention is feasible in practical application.
Owner:CHANGAN UNIV
Preparation method and application of Co-Pi/PDA/BiVO4 (cobalt phosphate/polydopamine/bismuth vanadium oxide) ternary composite photoelectrode
ActiveCN110042407AGood chemical stabilityImprove photoelectrochemical performanceElectrolytic inorganic material coatingOrganic-compounds/hydrides/coordination-complexes catalystsWater bathsSodium phosphates
The invention belongs to the technical field of photoelectrode nanomaterials and relates to a composite photoelectrode, in particular to a preparation method of a Co-Pi / PDA / BiVO4 (cobalt phosphate / polydopamine / bismuth vanadium oxide) ternary composite photoelectrode. Firstly, a layer of uniform BiOI nanoparticles are grown on an FTO surface through electro-deposition, and BiVO4 is produced throughhigh-temperature calcination; PDA is grown on BiVO4 with a chemical water bath method, a Co-Pi catalyst promoter is introduced with PDA as a functional bridge, a PDA / BiVO4 electrode is soaked in a cobalt nitrate and sodium phosphate water solution with a chemical water bath method, the Co-Pi catalyst promoter is grown on PDA, and the Co-Pi / PDA / BiVO4 photoelectrode is prepared. The synthesis process is simple, the repeatability is good, used materials are cheap and easy to obtain and meet the environment-friendly requirement, and the Co-Pi / PDA / BiVO4 composite photoelectrode prepared with the simple electro-deposition, high-temperature calcination and chemical bath deposition method has good chemical stability and good photoelectrochemical properties and has the photoelectric conversion efficiency up to 27%.
Owner:无锡智慧兴宜信息技术有限公司
Method for controllably synthesizing niobium pentoxide microspheres and microflowers without template solvent heat
The invention belongs to the technical field of inorganic nanomaterials, and particularly relates to a method for controllably synthesizing niobium pentoxide microspheres and microflowers without template solvent heat. The method comprises the following steps: firstly, mixing a certain amount of niobium inorganic matter ionic salt with a precipitant according to a certain ratio, and respectively dissolving into two different organic solvents; then performing ultrasonic treatment for 15-30 minutes, completely dissolving solid powder and evenly mixing; and finally, respectively transferring thetwo solutions into a reaction kettle with a polytetrafluoroethylene substrate, sealing, putting into a drying oven, controlling the temperature of the drying oven to be 180-200 DEG C, reacting for 8-12 hours, and after the reaction is over, cooling the product to be at room temperature; centrifugally separating the precipitated product, collecting solids, rinsing for multiple times with deionizedwater and absolute ethyl alcohol, and performing vacuum drying, to obtain the niobium pentoxide microspheres and microflowers.
Owner:JIANGSU UNIV
Environment-friendly coal transportation antifreezing agent and preparation method thereof
InactiveCN109777356APrevent freezing coalMeet the requirements of environmental friendlinessOther chemical processesBenzotriazolePotassium acetate
The invention relates to an environment-friendly coal transportation antifreezing agent which is prepared from the following components in parts by weight: 6-19 parts of potassium acetate, 8-16 partsof sodium formate, 9-15 parts of urea, 2-6 parts of ethylene glycol, 0.5-1.0 part of glycerin, 1-2 parts of sodium benzoate, 0.05-0.1 part of benzotriazole and 41-73 parts of water. The antifreezing agent can reduce the freezing point of coal to be lower than 30 DEG C below zero, is free of any chlorine salt components, fully meets the environment-friendly demand and is not sprayed to equipment and corrodes a train as well.
Owner:CCTEG CHINA COAL RES INST
Visible-light response Ag/Bi3O4Cl composite material as well as preparation method and application thereof
InactiveCN108620096AImprove separation efficiencyImprove photocatalytic activityWater/sewage treatment by irradiationWater treatment compoundsSemiconductor materialsPhotocatalytic degradation
The invention belongs to the technical field of semiconductor material preparation and specifically relates to a visible-light response Ag / Bi3O4Cl composite material as well as a preparation method and application thereof. The preparation method comprises the steps of dissolving Bi3O4Cl into an AgNO3 solution, evenly stirring, utilizing 250W xenon lamp to irradiate for 60min and washing and dryingto obtain the Ag / Bi3O4Cl composite material. By means of a surface Plasmon resonance effect of precious metal Ag, a separation efficiency between light-induced electrons and holes is effectively improved, and photocatalytic degradation capacity is further improved; the preparation method has the advantages of simple technology, low reaction cost, convenience in batch production and ability in meeting an environment-friendly requirement.
Owner:JIANGSU UNIV
Preparation method and use of yttrium-doped bismuth stannate nanocrystallines
InactiveCN104941627AStable in natureHigh purityWater/sewage treatment by irradiationMetal/metal-oxides/metal-hydroxide catalystsPhotocatalytic degradationYttrium
The invention provides a preparation method and use of yttrium-doped bismuth stannate nanocrystallines. A semi-conductor material can be used for visible-light degradation of organic pollutants and particularly can be used for visible-light degradation of tetracycline. The preparation method comprises the following steps: bismuth nitrate and yttrium nitrate are mixed in dilute nitric acid to be uniformly mixed, then a sodium stannate solution is added, ultrasonic treatment is conducted till a milk white mixed solution is obtained, the pH is adjusted with an NaOH solution, and finally the yttrium-doped bismuth stannate nanocrystallines are prepared by the one-step hydrothermal method. The yttrium-doped bismuth stannate nanocrystallines have the advantages of being stable in property, nontoxic and the like, the raw materials are low in price and easy to obtain, the cost is low, the environment-friendly requirement is satisfied, the reaction time is relatively short, accordingly, the energy consumption and the reaction cost are lowered, and volume production is facilitated; a yttrium-doped bismuth stannate nanocrystalline catalyst has relatively strong photocatalytic degradation ability, and can achieve the degradation effect of 80.0% when being used for photocatalytic degradation of tetracycline, thereby having a very high practical application value.
Owner:JIANGSU UNIV
PDA/Bi-AgIn5S8/TiO2 hetero-junction photoelectrode, preparation method and application
ActiveCN107265401AGood chemical stabilityImprove photoelectrochemical performanceEnergy inputNanotechnologyMaterial synthesisHydrothermal synthesis
The invention belongs to the technical field of nanometer material synthesis, and particularly provides a PDA / Bi-AgIn5S8 / TiO2 hetero-junction photoelectrode, a preparation method and application. Firstly, a titanium dioxide (TiO2) nanorod array is synthesized on an FTO substrate by using a hydrothermal synthesis method, then a layer of Bi-doped Bi-AgIn5S8 is uniformly formed on the titanium dioxide (TiO2) nanorod array by using the hydrothermal synthesis method, and finally, a layer of continuous polydopamine (PDA) is formed on the surface of the Bi-AgIn5S8 by using a chemical bath deposition method (CBD). The surface of a semiconductor is coated with a layer of PDA, the semiconductor can be prevented from making direct contact with a water solution, and serious photocorrosion is avoided, so that the stability of the semiconductor is improved. Therefore, the problem that in the process of hydrogen production by decomposing water with PEC, the semiconductor AgIn5S8 material is most likely to be influenced by photocorrosion and accordingly is inactivated can be solved so that the stable, permanent and high hydrogen production rate can be kept.
Owner:无锡智慧兴宜信息技术有限公司
Preparation method of visible light-responsive Fe3O4 quantum dot-modified BiOCl/BiVO4
InactiveCN109331848AStrong magnetismSimple processWater/sewage treatment by irradiationWater treatment compoundsHeterojunctionSemiconductor materials
The invention discloses a preparation method of visible light-responsive Fe3O4 quantum dot-modified BiOCl / BiVO4 and belongs to the technical field of preparation of semiconductor materials. The preparation method comprises the following steps: 1) preparation of a BiOCl / BiVO4 photo-catalyst with a one-step hydrothermal method; 2) preparation of the visible light-responsive Fe3O4 quantum dot-modified BiOCl / BiVO4: mixing FeCl3.6H2O and the BiOCl / BiVO4 photo-catalyst prepared in the step 1), adding into deionized water, stirring to form a solution A; meanwhile, dispersing FeCl2.4H2O of the same molar mass in deionized water, stirring to form a solution B, and dropwise adding the solution B in the solution A; continuously adding concentrated ammonia water in the solution A while stirring for areaction; collecting through a magnet, washing and then drying to obtain the visible light-responsive Fe3O4 quantum dot-modified BiOCl / BiVO4. The preparation method disclosed by the invention has thebenefits that a Fe3O4QDs-BiOCl / BiVO4p-n heterojunction is prepared by utilizing the simple and quick method, the heterojunction shows excellent photo-catalytic activity when used for degrading a variety of antibiotics under visible light, and a sample has relatively strong magnetism and is easy to recover and reuse; meanwhile, the preparation method reduces the energy consumption and the reactioncost, is convenient for mass production, non-toxic and harmless, and environmentally-friendly.
Owner:HOHAI UNIV
Coal-bed gas well flushing fluid and preparation method and application thereof
InactiveCN112680201AMeet the requirements of "environmental friendliness"Improve rheologyCleaning apparatusDrilling compositionProcess engineeringXanthan gum
The embodiment of the invention relates to coal-bed gas well flushing fluid as well as a preparation method and application thereof. The coal-bed gas well flushing fluid comprises one or more of the following core components dissolved in water: sodium alginate, gelatin, hydroxypropyl starch, konjac glucomannan, xanthan gum, scleroglucan and the balance of water. The coal-bed gas well flushing fluid is environmentally friendly and high in universality, has excellent dispersing, suspending and carrying performance on coal-bed gas well products such as pulverized coal, sand and soil, is insensitive to water quality, does not easily generate foam, is wide and easily available in raw material source, and has market competitiveness in cost.
Owner:王建宇 +1
Preparation method of zinc stannate nanocube or nanosheet material
InactiveCN107445195AMeet friendly requestSimple processTin compoundsHydrothermal synthesisTETRAETHYLAMMONIUM HYDROXIDE
The invention belongs to the technical field of nanometer materials, and concretely relates to a preparation method of a zinc stannate nanocube or a nanosheet material. The invention adopts a higher-temperature hydrothermal synthesis method so as to directly obtain a metal oxide material with the nanocube or a nanosheet structure. The preparation method comprises the steps of adopting sodium dodecyl benzene sulfonate as an external acidifying source, adopting tetraethylammonium hydroxide as an external alkalifying source, adjusting different hydrothermal times to adjust the size of the cube, adjusting the dosage of the sodium dodecyl benzene sulfonate to optimize the shape of the material, and finally obtaining the metallic oxide hierarchical-structure nanometer material with a regular shape and a stable structure. The method provided by the invention is mild and controllable in experiment conditions, high in practicability, and good in reproducibility.
Owner:JIANGSU UNIV
Preparation method and application of cuprous chloride/nickel foam composites with surface modified by metallic copper
ActiveCN109023415ASimple operation processShort reaction timeElectrolytic organic productionElectrode shape/formsCuprous chlorideMixed gas
The invention belongs to the technical field of electrochemistry, and relates to preparation of cuprous chloride / nickel foam composites, in particular to a preparation method and application of cuprous chloride / nickel foam composites with the surface modified by metallic copper. The preparation method comprises the steps that cut nickel foam (NF) is ultrasonically treated with acetone, absolute ethyl alcohol and deionized water and is then soaked in the deionized water for later use; copper chloride is dissolved in the deionized water and is stored at a low temperature for 30 min, the washed NF is added into the solution to stand for 2 h and is then taken out to be cleaned with the copper chloride and the absolute ethyl alcohol, and drying is conducted at the normal temperature to obtain CuCl / NF; and finally, the CuCl / NF is calcinated at 150-300 DEG C for 0.5-1.5 h with 10% of H2 / Ar mixed gas, so that the cuprous chloride / nickel foam composites with the surface modified by metallic copper are obtained. The preparation method is easy to operate and implement, the reaction time is short, and raw materials are cheap, easy to obtain and nontoxic and meet the requirement for environmental friendliness. When used for an electrochemical reduction solution CO2, a prepared Cu@CuCl / NF composite electrode has excellent electrochemical activity and stability and is suitable for industrialization.
Owner:JIANGSU UNIV
Brown colorant for water Teflon high-temperature cloth and preparing method thereof
InactiveCN101748597AGood storage stabilityImprove temperature resistanceFibre treatmentEmulsionTemperature resistance
The invention discloses a brown colorant for water Teflon high-temperature cloth and a method for preparing the brown colorant. The brown colorant is composed of a high-temperature resisting pigment, polytetrafluoroethylene, a functional additive agent, a dispersing wetting agent and deionized water. The materials comprise, by weight percent, 35 to 50 percent of the high-temperature resisting pigment, 10 to 20 percent of the polytetrafluoroethylene, 5 to 10 percent of the functional additive agent, 2 to 20 percent of the dispersing wetting agent, and the balance of deionized water. The brown colorant can be prepared through mixing and grinding all the constituents and implementing quality test, vacuum defoamation and filtering packing. The brown colorant for the water Teflon (PTFE) high-temperature cloth by the method is characterized by long storage stability, good temperature resistance (reaching to more than 400 DEG C), excellent chemical resistance, bright color, good compatibility with PTFE emulsion and high color intensity. The grain diameters can realize that D99 is less than or equal to 5 microns (namely, the average diameter of 99 percent of the grains is less than or equal to 5 microns), and the brown colorant and the method conform to national environmental requirements because the deionized water is taken as base material. The brown colorant has the advantages of simple preparation process, low preparation cost and easy industrialized production.
Owner:SUZHOU SUNMUN TECH CO LTD
Quantum dot-modified multi-shell CaTiO3 cube, and preparation method and application thereof
ActiveCN112387292AEasy transferReduce transmissionPhysical/chemical process catalystsHydrogen productionCalcium nitrate tetrahydrateHeterojunction
The invention belongs to the technical field of preparation of semiconductor materials, and particularly relates to a quantum dot-modified multi-shell CaTiO3 cube, and a preparation method and application thereof. According to the invention, calcium nitrate tetrahydrate, tetrabutyl titanate, sodium hydroxide, nickel nitrate hexahydrate and sodium hypophosphite are used as raw materials, and a simple hydrothermal method and a calcination method are combined to prepare the Ni2P / CaTiO3 heterojunction material with Z-type electron transport mechanism of the multi-shell CaTiO3 cube and Ni2P quantumdots. The Ni2P quantum dots are modified between shells and on the surface of the multi-shell CaTiO3 cube and used for improving abundance of active sites of channels between the shells so as to promote photocatalytic decomposition of water to produce hydrogen.
Owner:JIANGSU UNIV
Ag-Pi/BiVO4 heterojunction synthesis method and application thereof in photoelectrolysis of water
InactiveCN111705333ABroaden the response rangeImprove injection efficiencyElectrodesHeterojunctionPtru catalyst
The invention belongs to the technical field of nano material synthesis and relates to an Ag-Pi / BiVO4 heterojunction synthesis method. The preparation method comprises the following steps: firstly, growing a layer of BiOI nanoparticles on an FTO substrate by adopting an electro-deposition method; dropwise adding a mixed solution of vanadyl acetylacetonate and dimethyl sulfoxide on the surface of the FTO; carrying out high-temperature calcination to generate bismuth vanadate (BiVO4), carrying out a continuous ion adsorption reaction, sequentially soaking FTO in AgNO3, deionized water, Na2HPO4 and deionized water, and finally washing the FTO with deionized water to obtain the Ag-Pi / BiVO4 heterojunction. The heterojunction is used as a photoelectrode to be applied to photoelectrochemical hydrolysis reaction, wherein a cocatalyst, silver phosphate (Ag-Pi), is loaded on the wormlike nanostructure of bismuth vanadate (BiVO4), so that the photoresponse range, the charge injection efficiency and the charge separation efficiency of the photoelectrode are improved, and the sunlight utilization rate of the photoelectrode is improved. The material has the advantages of good chemical stabilityand good photoelectrochemical performance; the synthesis process is simple, the repeatability is good, the used materials are cheap and easy to obtain, and the environment-friendly requirement is met.
Owner:JIANGSU UNIV
Brown colorant for water Teflon high-temperature cloth and preparing method thereof
InactiveCN101748597BGood storage stabilityImprove temperature resistanceFibre treatmentEmulsionTemperature resistance
The invention discloses a brown colorant for water Teflon high-temperature cloth and a method for preparing the brown colorant. The brown colorant is composed of a high-temperature resisting pigment, polytetrafluoroethylene, a functional additive agent, a dispersing wetting agent and deionized water. The materials comprise, by weight percent, 35 to 50 percent of the high-temperature resisting pigment, 10 to 20 percent of the polytetrafluoroethylene, 5 to 10 percent of the functional additive agent, 2 to 20 percent of the dispersing wetting agent, and the balance of deionized water. The brown colorant can be prepared through mixing and grinding all the constituents and implementing quality test, vacuum defoamation and filtering packing. The brown colorant for the water Teflon (PTFE) high-temperature cloth by the method is characterized by long storage stability, good temperature resistance (reaching to more than 400 DEG C), excellent chemical resistance, bright color, good compatibility with PTFE emulsion and high color intensity. The grain diameters can realize that D99 is less than or equal to 5 microns (namely, the average diameter of 99 percent of the grains is less than or equal to 5 microns), and the brown colorant and the method conform to national environmental requirements because the deionized water is taken as base material. The brown colorant has the advantages of simple preparation process, low preparation cost and easy industrialized production.
Owner:SUZHOU SUNMUN TECH CO LTD
A visible and near-infrared photoresponsive cqds-znin 2 the s 4 -Preparation method of biocl ternary heterojunction
ActiveCN109482206BSimple processImprove photocatalytic activityWater/sewage treatment by irradiationWater contaminantsHeterojunctionSemiconductor materials
The invention discloses a visible and near-infrared photoresponse CQDs‑ZnIn 2 S 4 ‑The preparation method of BiOCl ternary heterojunction belongs to the technical field of semiconductor material preparation, comprising the following steps: 1) preparing ZnIn 2 S 4 Photocatalyst; 2) Preparation of CQDs photocatalyst; 3) Preparation of ZnIn 2 S 4 ‑BiOCl photocatalyst; 4) Preparation of CQDs‑ZnIn 2 S 4 ‑BiOCl photocatalyst. A visible and near-infrared photoresponsive CQDs‑ZnIn of the present invention 2 S 4 ‑BiOCl ternary heterojunction preparation method, using simple and fast method to prepare CQDs‑ZnIn 2 S 4 ‑BiOCl heterojunction exhibits excellent photocatalytic activity in the degradation of various antibiotics under visible and near-infrared light. The process of the invention is very simple, cheap and easy to obtain, low in cost and short in reaction time, thereby reducing energy consumption and reaction cost, convenient for mass production, non-toxic and harmless, and meeting the requirements of environmental friendliness.
Owner:HOHAI UNIV
A kind of bczt-based energy storage ceramic material and preparation method thereof
ActiveCN111978081BIncrease the breakdown electric field strengthHigh energy storage densityVehicular energy storageHigh energyZirconium dioxide
The invention relates to a BCZT-based energy storage ceramic material and a preparation method thereof, belonging to the field of functional ceramics. The formula of this material is (Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 o 3 ) 1‑x (BiMg 0.6667 Nb 0.3333 o 3 ) x , referred to as (1‑x)BCZT‑xBMN, where x=0‑0.1, x is the number of moles. The preparation process includes calcium carbonate, barium carbonate, zirconium dioxide, bismuth oxide, magnesium oxide, niobium pentoxide and titanium dioxide as raw materials, according to the chemical formula, through weighing, primary ball milling, pre-calcination, secondary ball milling, granulation, pressing The BCZT-based energy storage ceramic material is prepared by processes such as sheeting, debinding, and sintering. This material not only has high energy storage density, but also has the characteristics of high breakdown strength, good temperature and frequency stability, and the like.
Owner:XIAN TECH UNIV
Preparation method and application of a heterojunction photoelectrode
ActiveCN105044180BGood chemical stabilityImprove photoelectrochemical performanceMaterial electrochemical variablesHeterojunctionChemical stability
The invention belongs to the field of photoelectrochemical technology, and specifically refers to a preparation method and application of a heterojunction photoelectrode. First, a double-layer TiO2 nanorod array is synthesized on an FTO substrate, and then a uniform spin-coating method is used to spin-coat it on the FTO substrate. Layer redox graphene, and finally use chemical deposition and photodeposition methods to load CdS@Au core-shell structure nanoparticles on the surface of redox graphite / TiO2. The Au@CdS / RGO / TiO2 heterojunction photoelectrode prepared by simple hydrothermal synthesis method, spin coating method, chemical deposition method and photodeposition method has good chemical stability and good photoelectrochemical performance. ; The process of the present invention is simple, the repeatability is good, and the materials used are cheap and easy to obtain, which meets the requirements of environmental friendliness.
Owner:HUAWEI TEHCHNOLOGIES CO LTD
A cu-mof/bivo 4 Preparation method and application of composite photoelectrode
ActiveCN110408951BImprove separation efficiencyImprove capture abilityEnergy inputElectrodesSolar chemicalChemical stability
Owner:JIANGSU UNIV
fe 2 o 3 /g-c 3 no 4 Composite system, preparation method and application
ActiveCN107837816BSimple processImprove photocatalytic activityPhysical/chemical process catalystsHydration reactionEngineering
The invention belongs to the technical field of photocatalyst synthesis, especially Fe 2 O 3 / g‑C 3 N 4 The composite system, preparation method and application can be used for visible light catalytic degradation of tetracycline hydrochloride pollutants. Accurately weigh P123 and hexamethyleneimine, dissolve them in a mixed solution of absolute ethanol and ethylene glycol, and stir to obtain solution A. Accurately weigh ferric chloride tetrahydrate, add it to solution A and dissolve it with ultrasound to form solution B. Add mesoporous g‑C to solution B 3 N 4 Suspension C is formed. Suspension C was subjected to ultrasonic dispersion and magnetic stirring to obtain turbid liquid D. Transfer the turbid liquid D to the reaction kettle and react in an oven at 200°C for 15 hours. After being naturally cooled to room temperature, it was centrifuged, washed, and dried to obtain solid F. Put solid F into a crucible and put it into a muffle furnace for calcination to obtain a sample.
Owner:DAQO GROUP CO LTD
Preparation method and application of functional carbon quantum dots modified ag-in-zn-s quantum dots
ActiveCN112774694BReduce compounding efficiencyEfficient photolysis of water and hydrogen production efficiencyPhysical/chemical process catalystsHydrogen productionThio-Ethylic acid
The invention belongs to the technical field of photocatalytic hydrogen production, and relates to a preparation method of functional carbon quantum dots modified Ag-In-Zn-S quantum dots. The iron formic acid solution was mixed and made up to 20 mL with distilled water, and the CDs-FcA precursor was obtained by hydrothermal reaction at 110-140 °C for 2-4 h; silver nitrate, indium nitrate, zinc acetate, and L-cysteine were mixed into an aqueous solution, Adjust the pH of the solution to 8.5 with 1M NaOH, add CDs-FcA precursor and thioacetamide, stir evenly with ultrasonic, hydrothermally react at 110°C for 2-4 hours, and wash by centrifugation after the reaction. The invention utilizes the higher visible light response capability of the Ag-In-Zn-S quantum dots, and can quickly extract the photo-generated holes in the quantum dots through the two-order lower HOMO energy level orbits, which greatly reduces the photo-generated charges. Recombination efficiency to achieve more efficient photo-splitting of water for hydrogen production. The invention has the advantages of simple process, low price and easy availability, convenient mass production, non-toxic and harmless, and meets the requirements of environmental friendliness.
Owner:JIANGSU UNIV
Indium sulfide mesoporous hollow microsphere photocatalyst and preparation method and use thereof
ActiveCN105478142BSimple processImprove photocatalytic activityPhysical/chemical process catalystsWater/sewage treatment by irradiationCooking & bakingMicrosphere
The invention belongs to the technical field of nanomaterial synthesis. It uses a simple and rapid hydrothermal method to synthesize a carbon quantum dot modified indium sulfide (β-In2S3) mesoporous hollow microsphere photocatalyst in one step, and dissolves indium chloride and L-cysteine in distilled water and stir to obtain solution D; add carbon quantum dots to solution D and stir to obtain solution E; transfer solution E to a polytetrafluoroethylene-lined reactor, put it in an oven, and react at 150°C for 24 hours; wait After natural cooling to room temperature, centrifuge to obtain a dark red solid, which is washed and dried under vacuum to obtain a sample. Can be used to degrade methyl orange dye under visible light.
Owner:JIANGSU UNIV
A visible light responsive nb 2 o 5 /g‑c 3 n 4 Preparation method and use of heterojunction material
InactiveCN105195203BSimple processImprove photocatalytic activityPhysical/chemical process catalystsWater/sewage treatment by irradiationHeterojunctionLight responsive
The invention belongs to the technical field of nano material synthesis. A niobium pentoxide and graphite-like phase carbonized nitrogen heterojunction photocatalyst is synthesized by a simple and quick thermal polymerization method by one step, and can be used for degrading a methylene blue stain under visible light. A preparation method comprises the following steps: uniformly grinding and mixing niobium pentoxide and melamine, and obtaining a sample B; transferring the sample B into a circular crucible, covering the crucible with a crucible cover, horizontally placing the crucible into a muffle furnace, heating the muffle furnace to 550 DEG C, reacting under the temperature for 4 hours, naturally cooling to room temperature, and obtaining a sample B1; uniformly grinding the sample B1, and finally obtaining an Nb2O5 / g-C3N4 heterojunction sample.
Owner:JIANGSU UNIV
Preparation method of high-gloss environment-friendly organic pigment paste for natural latex balloon
The invention discloses a preparation method of high-gloss environment-friendly organic pigment slurry for natural latex balloons. The high-gloss environment-friendly organic pigment slurry comprises organic pigment, wetting dispersant, brightener, humectant, anti-mildew bactericide, pH regulator and deionized water. The preparation method includes: pre-dispersing and grinding the components, and then performing quality inspection, vacuum defoaming and filtration to obtain the required environment-friendly organic pigment slurry. The high-gloss environment-friendly organic pigment slurry prepared by the method has the advantages that the slurry is high in glossiness and good in environment protection performance, the deionized water is used as the solvent, and the slurry conforms to the environment-friendly requirement of China.
Owner:ZHEJIANG NAMEI MATERIAL TECH
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