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42results about How to "Many catalytic sites" patented technology
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Preparation method and application of nano nickel phosphide
ActiveCN102040203ALarge specific surface areaMany catalytic sitesPhysical/chemical process catalystsNanotechnologyIonChemistry
The invention discloses a preparation method and application of nano nickel phosphide. The preparation method comprises the following steps: dissolving an anion type surfactant, soluble nickel salt and a reducing agent into distilled water, and evenly stirring; adding simple substance phosphorus; heating to 130-170 DEG C; reacting for 6-15 hours; cooling to the room temperature, and washing for multiple times with absolute ethyl alcohol and deionized water; and drying the product to the constant weight in a vacuum drying oven at 50-60 DEG C to prepare the nano nickel phosphide. Compared with the prior art, the invention has the advantages that a simple water heating method is utilized, a phosphorus source is the simple substance phosphorus, and the temperature and time of the reaction arequite short, which is beneficial to industrial mass production. When the nano particles of the prepared nickel phosphide are used in the catalytic hydrogenation production of nitrobenzene, the hydrogenation of the nitrobenzene can be catalyzed at lower temperature and under lower pressure, the reusability is good and the industrial use value is high because of porous surface structure, large specific surface area and multiple catalytic activity points.
Owner:NANTONG ZHONGXING MAGNETIC IND
Nitrogen-doped carbon nano-array/ cobalt ferrite material
InactiveCN108183228ALarge specific surface areaMany catalytic sitesCell electrodesConductive polymerMetal-organic framework
The invention provides a nitrogen-doped carbon nano-array / cobalt ferrite material obtained by calcining a polyaniline-iron-cobalt metal organic framework, the nano material is a double-metal oxide, and has a large specific surface area, a plurality of catalytic sites, and higher catalytic efficiency. The polyaniline-iron-cobalt metal organic framework has good compatibility with various metal ions, a uniform multi-metal spinel can be easily synthesized from the polyaniline-iron-cobalt metal organic framework, the double-metal oxide and a conductive polymer are combined, so that advantages of different types of electrode materials can be combined with each other, and at the same time, nitrogen-doped carbon can be formed by polyaniline calcination, conductivity is further improved, and the defects of poor conductivity and poor stability of iron-cobalt oxides can be solved.
Owner:UNIV OF JINAN
ZIF-67 zeolite imidazate skeleton-based composite electrocatalyst, preparation method thereof, zinc-air battery positive electrode and zinc-air battery
ActiveCN110931803AEnables high-efficiency dual-function featuresMany catalytic sitesFuel and primary cellsCell electrodesElectro catalystPtru catalyst
The invention relates to the technical field of electrochemical energy storage. The invention specifically discloses a ZIF-67 zeolite imidazate skeleton-based composite electrocatalyst, a preparationmethod thereof, a zinc-air battery positive electrode and a zinc-air battery. The preparation method of the composite electrocatalyst comprises: carrying out vulcanization treatment and / or phosphatingtreatment on a carbonized ZIF-67 zeolite imidazate skeleton in an inert atmosphere. The ZIF-67 zeolite imidazate skeleton-based composite electrocatalyst is prepared by carrying out vulcanization and / or phosphorization on a carbonized ZIF-67 zeolite imidazate skeleton in an inert atmosphere. The heterogeneous synergistic effect between the cobalt compound and the carbon material and the ordered pore structure in the composite material provide rich catalytic sites, so that the efficient bifunctional characteristic of the catalyst is realized; the ZIF-67 zeolite imidazate skeleton-based composite electrocatalyst can be used for a positive electrode of a zinc-air battery, shows excellent electrochemical performance, and provides theoretical basis and technical support for practical application of the zinc-air battery.
Owner:UNIVERSITY OF MACAU
Small bell type Fe3O4 nano-reactor, and preparation and application of nano-reactor
InactiveCN107185537AImprove stabilityAvoid reunionWater treatment compoundsWater contaminantsNanoreactorPtru catalyst
The invention discloses a small bell type Fe3O4 nano-reactor, and preparation and application of the nano-reactor. The reactor takes Fe3O4 particles as a core, the surface of the core is coated with a silica gel layer by a Stober method to form a Fe3O4@SiO2 compound, the surface of the Fe3O4@SiO2 compound reacts in acetone by the aid of dicyclopentadienyl iron and H2O2 to form a Fe3O4 / C shell, a Fe3O4@SiO2@Fe3O4 / C compound is obtained, and finally, the silica gel layer is removed by ammonia water to obtain the small bell type Fe3O4 nano-reactor. Compared with a traditional heterogeneous Fenton catalyst, the small bell type structure effectively avoids catalyst agglomeration, and stability of the Fenton catalyst is enhanced.
Owner:ZHEJIANG UNIV OF TECH
Catalyst used for fixed bed ethyne hydrochlorination reactions and using method
ActiveCN108097251AMany catalytic sitesIncrease the active center contentPreparation by halogen halide additionCatalyst activation/preparationCopper chlorideIncipient wetness impregnation
The invention provides a catalyst used for fixed bed ethyne hydrochlorination reactions and a using method. According to the catalyst, industrial nitrogen-containing resin is used for soaking copper chloride or nitrogen-containing species by a primary wet impregnation method, and then specific temperature programmed calcinations are used for carrying out carbonization treatment under inert gases,and thus the catalyst is obtained. The catalyst has the characteristic that the nitrogen-containing resin is taken as a nitrogen-containing carbon source which is rich in pore structures, and the content of active centers is greatly improved by soaking copper chloride or nitrogen-containing species by the primary wet impregnation method. According to the method, compared with other preparation technologies, the preparation of active carbon and nitrogen doping are completed at one step, the synthetic procedure is simplified, and the energy sources consumed by high-temperature calcination are saved. The invention discloses the novel catalyst and a preparation technology thereof, the catalyst is applied into the fixed bed ethyne hydrochlorination reactions, and the catalyst has certain catalytic activity.
Owner:NANKAI UNIV
Loaded ultra-small Prussian blue analog and preparation method and application thereof
ActiveCN110237868APromote formationEasy to synthesizeMaterial nanotechnologyOrganic-compounds/hydrides/coordination-complexes catalystsElectricityDivalent metal
The invention discloses a loaded ultra-small Prussian blue analog and a preparation method and application thereof, belonging to the technical field of functional nanomaterials. The preparation method comprises the following steps: 1) mixing a trivalent metal compound, a divalent metal compound, a first solvent, a ligand and graphene for reaction and washing to prepare a graphene-loaded ultra-small Prussian blue analog; (2) dispersing a graphene-loaded ultra-small Prussian blue analog turbid liquid in the first solvent, and adding a reducing agent and an alkaline solution for mixing and reacting to prepare the graphene-loaded ultra-small Prussian blue analog after graphene reduction. The method can realize the synthesis of the graphene loaded ultra-small Prussian blue analog and the synthesis of the ultra-small Prussian blue analog. The loaded ultra-small Prussian blue analog prepared by the method is a Prussian blue analog and graphene composite structure, and can improve the electricity receiving capacity of the catalyst.
Owner:HANGZHOU NORMAL UNIVERSITY
Iridic oxide/manganese dioxide combined electrode with hierarchical structure and preparation method thereof
InactiveCN107248579AReduce overpotentialImprove catalytic performanceFuel and primary cellsMaterial nanotechnologyLithium–air batteryBattery capacity
The invention discloses an iridic oxide / manganese dioxide combined electrode with a hierarchical structure and a preparation method thereof. The electrode comprises flake-shaped MnQ2 directly growing on a substrate and nano IrO2 particles, wherein strip-shaped MnO2 covers the surface of the flake-shaped MnO2, and the nano IrO2 particles are uniformly placed on the surfaces of the flake-shaped MnO2 and the strip-shaped MnO2. In the iridic oxide / manganese dioxide combined electrode prepared by the method provided by the invention, the MnO2 and the IrO2 have a synergistic catalytic action, and improvement of catalytic performance is facilitated, so that overpotential of a lithium-air battery can be effectively reduced; the MnO2 in the combined electrode has a hierarchical structure, and comprises two forms, so that the combined electrode has larger specific surface area, and can provide more catalytic sites, improvement of deposition of Li2O2 is further facilitated, and thus battery capacity is improved.
Owner:ZHEJIANG UNIV
Ferric-copper oxide as well as preparation method and application thereof
ActiveCN110038570ALarge specific surface areaMany catalytic sitesWater treatment compoundsWater contaminantsIonEnvironmental resistance
The invention discloses a ferric-copper oxide as well as a preparation method and an application thereof. The ferric-copper oxide is prepared from a potassium ferricyanide solution and a copper ion solution through a reaction and heat treatment. The ferric-copper oxide has the advantages of large specific surface area, multiple catalytic sites, high catalysis efficiency and the like, has better magnetism, is easy to separate and reutilize and also has the advantages of low preparation cost, environmental friendliness and the like. The preparation method of the ferric-copper oxide has the advantages that raw materials are widely sourced, the production cost is low, the preparation process is simple, operation is simple and convenient, the energy consumption is low, no toxic or harmful substances are produced, the preparation method is environmentally friendly and the like. The ferric-copper oxide can serve as a catalyst of a Fenton-like reaction, can be used for treating antibiotic wastewater, has the advantages of being simple and convenient to operate, lower in cost, high in treatment efficiency, good in treatment effect, low in adding dosage of chemical agents, environmentally friendly and the like, the defect that iron precipitates can be produced with a conventional Fenton oxidation method can be overcome, and the ferric-copper oxide has good application prospects.
Owner:HUNAN UNIV
Charcoal-based hard foamy carbon, preparation method thereof, and application of charcoal-based hard foamy carbon in electro-catalysis
ActiveCN113104833AWide natural reservesLarge OER activityElectrolytic organic productionCarbon preparation/purificationPtru catalystFuraldehyde
The invention provides a charcoal-based hard foamy carbon, a preparation method thereof, and application of the charcoal-based hard foamy carbon in electro-catalysis. The preparation method of the foamy carbon comprises the following steps: S1, providing chitosan aerogel; and S2, compounding the chitosan aerogel with phenolic resin, and then performing pyrolysis in an inert gas atmosphere to obtain the charcoal-based hard foamy carbon containing glassy carbon. The hard foamy carbon prepared by the method has a large specific surface area, relatively high mechanical strength and low synthesis cost, and can be used as an electrode material to realize high-efficiency selective catalytic oxidation of 5-hydroxymethylfurfural. The preferable layered double-metal hydroxide catalyst shows excellent electrocatalytic oxidation performance on 5-hydroxymethylfurfural, and oxidation of a target product can be rapidly completed with high selectivity. The reaction condition of electrocatalytic oxidation of 5-hydroxymethylfurfural by the catalyst synthesized in the embodiment of the invention is mild, and selective oxidation of 5-hydroxymethylfurfural can be completed within a short time under the mild conditions of normal temperature and normal pressure.
Owner:UNIV OF SCI & TECH OF CHINA
Catalyst for decomposing formaldehyde and preparation method of catalyst
InactiveCN109794160AImprove pore structureSmall particle sizeDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsDecompositionCordierite
The invention provides a catalyst for decomposing formaldehyde and a preparation method of the catalyst. According to the catalyst for decomposing formaldehyde, cordierite honeycomb ceramic serves asa carrier, and sub-nano noble metal particles and an oxygen storage metal oxide are loaded on the carrier. The preparation method of the catalyst for decomposing formaldehyde comprises the steps of cleaning of the cordierite honeycomb ceramic carrier, preparation of the sub-nano noble metal particles, preparation of compound slurry, adsorption and drying and calcining. The catalyst carrier is loaded with the sub-nano noble metal particles, the particle size is small, the specific surface area is large, the number of catalytic sites is large, and the catalytic activity is high; the oxygen storage metal oxide is also loaded on the carrier so that oxygen in air can be captured, and formaldehyde oxidative decomposition can be promoted; the cordierite honeycomb ceramic serves as the carrier, sothat the catalyst has certain mechanical strength and an excellent pore structure. By means of the preparation method, the catalyst can be obtained.
Owner:ZHEJIANG DUNAN ARTIFICIAL ENVIRONMENT
Method for advanced treatment of chemical waste water through SKL three-phase catalytic oxidation and BAF
ActiveCN105645671AHigh feasibilityAvoid defectsWater treatment parameter controlTreatment using aerobic processesSolid phasesWater content
The invention relates to a method for advanced treatment of chemical waste water through SKL three-phase catalytic oxidation and BAF. The method comprises: leading waste water into an SKL three-phase catalytic oxidation reactor for reaction; leading the obtained water into an adjusting stabilization pond; leading the obtained water into a biological aerated filter; and finally leading the obtained water out. Chemical waste water subjected to "physicochemical and biochemical" secondary treatment is pumped into the SKL three-phase catalytic oxidation reactor. The waste water subjected to magnetization pre-treatment reacts with a solid-phase catalyst SKL-A and an oxidant for a catalytic oxidation reaction, and an ultrasonic effect is adopted during the reaction process. Pollutants hard to degrade in the chemical waste water are subjected to chain scission and ring opening, the water content is further regulated for reaction improvement, and the obtained water is led into the biological aerated filter for biochemical treatment. Defects of a limited processing load, high operation cost, large investment, and little project experience in a conventional method are overcome. Through adoption of magnetization pre-treatment in the method, the chemical reaction speed and reaction degree are significantly increased; loss of the solid-phase catalyst and the application amount of the oxidant are reduced; and the operation cost is greatly reduced.
Owner:NANJING SHENKELONG ENVIRONMENTAL PROTECTION
Preparation method of activated carbon-based ferromanganese oxide film for catalytic oxidation of NH4<+>, and activated carbon-based ferromanganese oxide film and deamination application thereof
PendingCN112221512AEasy to controlEasy to manufactureWater treatment compoundsWater contaminantsManganese sulphateActivated carbon
The invention relates to the technical field of sewage treatment, in particular to a preparation method of an activated carbon-based ferromanganese oxide film for catalytic oxidation of NH4<+>, and the activated carbon-based ferromanganese oxide film and deamination application thereof. The preparation method comprises the following preparation steps: preparing a manganese sulfate solution, putting activated carbon into the manganese sulfate solution, carrying out soaking, and then performing draining to obtain manganese sulfate-loaded activated carbon; preparing a potassium permanganate solution, putting the activated carbon loaded with manganese sulfate into the potassium permanganate solution, and successively conducting soaking and draining to obtain activated carbon-based birnessite;and preparing a mixed solution of manganese sulfate and ferrous sulfate, carrying out air aeration on the mixed solution, putting the activated carbon-based birnessite into an organic glass adsorptioncolumn, and circularly pumping the aerated mixed solution into an organic glass adsorption column to obtain the activated carbon-based ferromanganese oxide film. The activated carbon-based ferromanganese oxide film can catalytically oxidize NH4<+> at normal temperature to obtain a clean product, namely nitrogen; and preparation process is simple and quick, cost is low, and industrial amplification is facilitated.
Owner:BEIJING ORIGIN WATER FILM TECH
Preparation method of three-dimensional porous Rh-Ir alloy dendritic crystal nanoflower as well as material obtained by preparation method and application of three-dimensional porous Rh-Ir alloy dendritic crystal nanoflower
ActiveCN111600040ANot easy to aggregate and dissolveEasy transferMaterial nanotechnologyCell electrodesIridiumPtru catalyst
The invention discloses a preparation method of a three-dimensional porous Rh-Ir alloy dendritic crystal nanoflower, as well as a material obtained by the preparation method and the application of thematerial as a hydrogen evolution catalyst. The method comprises the following steps that polyallylamine serves as a morphology regulating agent, rhodium salt and iridium salt serve as precursors, ethylene glycol and polyallylamine hydrochloride are mixed to be uniform, then a precursor solution of rhodium and iridium is added, and the three-dimensional porous Rh-Ir alloy dendritic crystal nanoflower is obtained through hydrothermal method reduction. Compared with the traditional preparation method, the method provided by the invention is simple in process operation and easy to synthesize, thedeionized water can be used for removing heteroions and excess morphology regulating agent in the solution, and the excess morphology regulating agent is a recyclable green chemical reagent, so thatthe method is environment-friendly and pollution-free. The three-dimensional porous Rh-Ir alloy dendritic crystal nanoflower prepared through the method is not larger than 60 nm in diameter, single inmorphology and extremely high in purity, has the advantages of being large in specific surface area, multiple in active sites, good in electron conductivity, stable in structure and the like, and shows excellent electro-catalytic activity on hydrogen evolution.
Owner:NANJING NORMAL UNIVERSITY
Pt or Au modified porous PdFe intermetallic compound, and preparation method and application thereof
ActiveCN110224148AImprove corrosion resistanceEasy transferCell electrodesFuel cellsFuel cellsNanoparticle
The invention discloses a Pt or Au modified porous PdFe intermetallic compound, and a preparation method and an application thereof, and belongs to the technical field of electrochemistry. An intermetallic compound is a nanoparticle; an inner core of the nanoparticle is an ordered PdFe intermetallic compound; the surface of the nanoparticle is of a porous structure with uniformly distributed Pd; and the surface of the porous structure is modified with Pt or Au. The preparation method comprises the steps of using palladium acetate and ferric salt as metal sources, and loading the metal sourceson a carbon carrier; then thermally decomposing acetate in a protective atmosphere to obtain a supported PdFe intermetallic compound; and after Fe on the surface is etched away, adopting a surface modification technology to prepare the Pt or Au modified PdFe intermetallic compound with the porous surface and the ordered inner core. The Pt or Au modified porous PdFe intermetallic compound preparedby the method shows relatively high activity and stability as a negative oxygen reduction reaction catalyst and a positive hydrogen oxidation reaction catalyst of a fuel cell.
Owner:HUAZHONG UNIV OF SCI & TECH
Cobalt-vanadium-based self-supporting electrode and preparation method and application thereof
ActiveCN114318400AAvoid postprocessingSimple manufacturing processEnergy inputElectrodesPtru catalystAmmonium metavanadate
The invention discloses a cobalt-vanadium-based self-supporting electrode and a preparation method and application thereof, and belongs to the technical field of water electrolysis hydrogen production. Cobalt chloride and ammonium metavanadate are used as sources of cobalt and vanadium respectively, a coralline-shaped nano array precursor is synthesized on a conductive substrate through a one-step hydrothermal method, and a CoN / VN-coated NF self-supporting electrode is obtained through subsequent nitriding treatment. According to the preparation method, the subsequent treatment that the catalyst is attached to the electrode through a post-coating process and addition of an adhesive and a conductive agent is avoided, the electrode preparation process is simplified, the cost is reduced, the substrate material is of a foam structure, the catalyst can be riveted and dispersed, high loading of active components is achieved, and therefore rich catalytic sites are provided. The obtained electrode has good hydrogen evolution activity and stability, especially when the current density is increased, the hydrogen evolution activity of the electrode gradually approaches commercial Pt / C, and the electrode has the potential of large-scale production.
Owner:HEILONGJIANG UNIV
Production method for fiber-supported catalyst prepared by using microfluidic one-step method and application of fiber-supported catalyst to paraaminophenol
ActiveCN108014849AHigh catalytic activityPorousOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsFiberNumerical control
The invention provides a production method for a fiber-supported catalyst prepared by using a microfluidic one-step method and an application of the fiber-supported catalyst to paraaminophenol. The production method comprises the steps: slowly adding tree-dimensional chitosan sol into a graphene oxide solution to obtain carrier sol; uniformly mixing nickel nitrate supported solid superacid powderwith a bronsted acidic ionic liquid to obtain a supported suspension; respectively injecting the carrier sol, the supported suspension and a reducer into an injector by taking a coaxial microfluidic channel network as a device, controlling the flow speed of the solution by using a numerical control injection pump to make the carrier sol form a stable thick state in a channel, mixing the carrier sol, the supported suspension and the reducer, reducing and solidifying the mixture by using a heating device, collecting fibers to be further dried to obtain the fiber-supported catalyst prepared by using the microfluidic one-step method; and adding the fiber-supported catalyst prepared by using the microfluidic one-step method and nitrobenzene into a high-pressure reactor, carrying out heating fora hydrogenation reaction, carrying out stirring until the reaction is ended, and pouring out a reaction solution, and filtering the catalyst to obtain paraaminophenol.
Owner:苏州艾博特化工有限公司
A kind of enzyme precatalysis-magnetoacoustic catalytic oxidation advanced water treatment method
ActiveCN106630390BReduce surface tensionFast catalytic speedWater/sewage treatment by magnetic/electric fieldsMultistage water/sewage treatmentFenton reactionCatalytic oxidation
The invention relates to an enzyme pre-catalysis-magnetosonic catalytic oxidation deep treatment method for water. According to the method, waste water subjected to physicochemical and biochemical twp-grade treatment is fed into an enzyme pre-catalysis reactor, and an SKL-composite enzyme is added to catalyze reactions; then the waste water is subjected to a multiple-potential-difference multi-metal chemical catalysis reaction; hydrogen peroxide is added to perform a strong oxidation reaction; generated hydroxy free radicals (.OH) and organic pollutants are subjected to a rapid chain type reaction, and harmful compounds are oxidized into CO2, H2O or mineral salts; objectives of degrading pollutants and fully utilizing agents are achieved; solid liquid separation is performed to remove SS; and PAM is added. The method overcomes the defects that emission standards cannot be stably met, and treating costs are at an all-time high. The method overcomes the problem that a large amount of iron sludge is generated in a traditional homogeneous Fenton reaction process, reduces secondary pollution, reduces the treating cost, and achieves catalytic pollutant degradation in a condition near a neutral condition.
Owner:南京神克隆环保科技有限公司
High-efficiency integrated treatment process for landfill leachate membrane concentrated solution
PendingCN114853274ACompletely degradedThorough removalWater/sewage treatment with mechanical oscillationsWater aerationCatalytic oxidationRadical oxidation
The invention discloses a high-efficiency integrated treatment process for landfill leachate membrane concentrate, which combines (1) bio-enzyme oxidation, (2) short-cut nitrification and denitrification, (3) multi-phase metal chemical catalysis and (4) free radical oxidation processes, and applies an enzyme pre-oxidation reactor, a short-cut denitrification device, a magnetoacoustic catalytic reactor and a catalytic oxidation reactor for the process provided by the invention. A vertical flow type sedimentation tank and a microwave ultrasonic reaction device are adopted for implementation; the treated effluent reaches the discharge standards required by the table 2 and the table 3 of the Pollution Control Standard for the Landfill Site of Municipal Solid Waste (GB16889-2008); the method is a full-quantitative treatment process in a real sense, and thorough degradation and removal of pollutants are realized.
Owner:NANJING SHENKELONG ENVIRONMENTAL PROTECTION
A kind of loaded ultra-small Prussian blue analogue and its preparation method and application
ActiveCN110237868BAchieve synthesisRealize large-scale productionMaterial nanotechnologyOrganic-compounds/hydrides/coordination-complexes catalystsPtru catalystDivalent metal
A loaded ultra-small Prussian blue analogue and its preparation method and application belong to the technical field of functional nanomaterials. The preparation method comprises the following steps: 1) react trivalent metal compound, divalent metal compound, first solvent, ligand and graphene, and prepare graphene-loaded ultra-small Prussian blue analogue after mixing and washing; 2) graphite The turbid liquid of the graphene-loaded ultra-small Prussian blue analogue is dispersed in the first solvent, and a reducing agent and an alkaline solution are added for a mixed reaction to obtain a graphene-loaded ultra-small Prussian blue analogue after graphene reduction. The invention can realize the synthesis of graphene-loaded ultra-small Prussian blue analogs, and can realize the synthesis of ultra-small Prussian blue analogs. The loaded ultra-small Prussian blue analogue prepared by the invention is a composite structure of the Prussian blue analogue and graphene, which can improve the electricity receiving ability of the catalyst.
Owner:HANGZHOU NORMAL UNIVERSITY
A kind of preparation method of three-dimensional porous rh-ir alloy dendritic nanoflowers, obtained materials and applications
ActiveCN111600040BNot easy to aggregate and dissolveEasy transferMaterial nanotechnologyCell electrodesPtru catalystGlycol synthesis
The invention discloses a method for preparing a three-dimensional porous Rh-Ir alloy dendritic nanoflower, the obtained material and its application as a hydrogen evolution catalyst. The method comprises the following steps: using polyallylamine as a morphology regulator, Using rhodium salts and iridium salts as precursors, mix ethylene glycol and polyallylamine hydrochloride evenly, add rhodium and iridium precursor solutions, and obtain three-dimensional porous Rh‑Ir alloy dendrite nanoflowers through hydrothermal reduction . Compared with the traditional preparation method, the process of the present invention is simple and easy to synthesize, and deionized water can be used to remove the miscellaneous ions and excess morphology regulator in the solution, and the excess morphology regulator is a recyclable green chemical reagent. Environmentally friendly and pollution-free. The three-dimensional porous Rh-Ir alloy dendritic nanoflowers prepared by the method of the present invention have a diameter of no more than 60nm, a single appearance, high purity, large specific surface area, many active sites, good electronic conductivity, and stable structure. The hydrogen evolution exhibits excellent electrocatalytic activity.
Owner:NANJING NORMAL UNIVERSITY
A kind of skl three-phase catalytic oxidation-baf method for advanced treatment of chemical wastewater
ActiveCN105645671BHigh feasibilityAvoid defectsWater treatment parameter controlTreatment using aerobic processesChemical reactionChain scission
The invention relates to a method for advanced treatment of chemical waste water through SKL three-phase catalytic oxidation and BAF. The method comprises: leading waste water into an SKL three-phase catalytic oxidation reactor for reaction; leading the obtained water into an adjusting stabilization pond; leading the obtained water into a biological aerated filter; and finally leading the obtained water out. Chemical waste water subjected to "physicochemical and biochemical" secondary treatment is pumped into the SKL three-phase catalytic oxidation reactor. The waste water subjected to magnetization pre-treatment reacts with a solid-phase catalyst SKL-A and an oxidant for a catalytic oxidation reaction, and an ultrasonic effect is adopted during the reaction process. Pollutants hard to degrade in the chemical waste water are subjected to chain scission and ring opening, the water content is further regulated for reaction improvement, and the obtained water is led into the biological aerated filter for biochemical treatment. Defects of a limited processing load, high operation cost, large investment, and little project experience in a conventional method are overcome. Through adoption of magnetization pre-treatment in the method, the chemical reaction speed and reaction degree are significantly increased; loss of the solid-phase catalyst and the application amount of the oxidant are reduced; and the operation cost is greatly reduced.
Owner:NANJING SHENKELONG ENVIRONMENTAL PROTECTION
Porous pdfe intermetallic compound modified by pt or au and its preparation method and application
ActiveCN110224148BImprove corrosion resistanceEasy transferCell electrodesFuel cellsPtru catalystIron salts
The invention discloses a Pt or Au modified porous PdFe intermetallic compound, a preparation method and an application thereof, and belongs to the technical field of electrochemistry. The intermetallic compound is a nano particle, the inner core of the nano particle is an ordered PdFe intermetallic compound, the surface is a porous structure with evenly distributed Pd, and the surface of the porous structure is decorated with Pt or Au. The preparation method is to use palladium acetate and iron salt as the metal source, and load it on the carbon carrier, and then thermally decompose the acetate in a protective atmosphere to obtain a supported PdFe intermetallic compound. After etching away the Fe on the surface, use Surface modification technology prepared Pt or Au modified PdFe intermetallic compounds with porous surface and ordered inner core. The Pt or Au modified porous PdFe intermetallic compound prepared by the invention shows high activity and stability as a fuel cell cathode oxygen reduction reaction catalyst and an anode hydrogen oxidation reaction catalyst.
Owner:HUAZHONG UNIV OF SCI & TECH
A preparation method of flexible zinc-air battery based on zeolite imidazolate skeleton-67 derivatives
The invention discloses a preparation method of a flexible zinc-air cell based on zeolite imidazate skeleton-67 derivative, and belongs to the technical field of the flexible energy device. The preparation method comprises the following steps: taking ZIF-67 as raw materials, annealing in the air atmosphere to prepare Co3O4 positive catalyst for a cell air electrode, assembling various flexible components to prepare the flexible zinc-air cell. By adopting the Co3O4 prepared by annealing the ZIF-67 as the positive catalyst, the ordered porous structure provides rich catalysis sites, various components of the cell are assembled as the cell after realizing the flexibility, thereby preparing the wearable flexible device. The preparation method disclosed by the invention provides theoretic basisand technical support for the actual application of the flexible zinc-air cell.
Owner:BEIJING UNIV OF TECH
A kind of polymer, its preparation method and application as detecting bacteria and antibacterial material
ActiveCN110713603BImprove thermal stabilityImprove stabilityMaterial analysis by observing effect on chemical indicatorPeroxidaseStaphyloccocus aureus
The invention belongs to the technical field of antibacterial nano materials, and particularly relates to a polymer, a preparation method thereof, and application of the polymer as a bacterium detection and antibacterial material. At present, the antibacterial nano material becomes a research hotspot in the antibacterial field due to the advantages of stability, difficulty in generating drug resistance and the like. According to the ferriporphyrin-based porous organic metal polymer provided by the invention, pyrrole and a compound BFPB are used as raw materials, so that the polymer is synthesized by a hydrothermal method, and the preparation method is simple. The polymer has good chemical and thermal stability, the 3D interconnected porous structure provides rich catalytic active sites, and the polymer has good peroxidase-like activity. Under a near-infrared illumination condition, the polymer has a killing effect on staphylococcus aureus, and the Ab2@Au@FePPOPBFPB prepared from the polymer has good specificity and sensitivity when being applied to detection of staphylococcus aureus.
Owner:SHANDONG UNIV
Iron copper oxide and its preparation method and application
ActiveCN110038570BLarge specific surface areaMany catalytic sitesWater treatment compoundsWater contaminantsPtru catalystPotassium ferricyanide
The invention discloses an iron-copper oxide and its preparation method and application. The iron-copper oxide is prepared by heat treatment after reacting a potassium ferricyanide solution and a copper ion solution. The iron-copper oxide of the present invention has the advantages of large specific surface area, many catalytic sites, high catalytic efficiency, etc., has good magnetism, is easy to separate and reuse, and also has the advantages of low preparation cost, environmental protection, etc., and its preparation method has raw materials It has the advantages of wide source, low production cost, simple preparation process, easy operation, low energy consumption, no toxic and harmful substances, and environmental friendliness. The iron-copper oxide of the present invention can be used as a catalyst for a Fenton-like reaction and can be used to treat antibiotic wastewater. It has the advantages of simple operation, low cost, high treatment efficiency, good treatment effect, low dosage of chemicals, environmental protection, etc., and at the same time It can avoid the shortcomings of iron precipitation caused by the traditional Fenton oxidation method and has good application prospects.
Owner:HUNAN UNIV
A method for preparing a dye-sensitized solar cell counter electrode using a tantalum-based counter electrode catalytic material
ActiveCN103413686BLow priceSimple preparation processLight-sensitive devicesPhotovoltaic energy generationSizingHeat treated
The invention discloses a method for preparing a dye-sensitized solar cell counter electrode by using a tantalum-based counter electrode catalytic material, comprising: 1) preparing a tantalum-based compound counter electrode catalytic material; 2) preparing a tantalum-based composite counter electrode catalytic material; 3 ) Using a tantalum-based compound or a tantalum-based composite material to prepare a counter electrode catalytic material slurry, coating the counter electrode catalytic material slurry on one side of the conductive glass to form a counter electrode catalytic layer film, and heat-treating the film to obtain a tantalum based counter electrode catalytic film. The counter electrode catalytic material in the method has excellent catalytic activity, electrochemical stability and photovoltaic performance, and can replace noble metal Pt electrodes and be applied to dye-sensitized solar cell devices. The synthesized counter-electrode catalytic material and the constructed counter-electrode film have low cost, simple operation, and strong compatibility with the preparation process of the photoanode. The performance of the constructed counter electrode catalyst has been greatly improved, which ensures the stability, reliability and practicality of the electrode performance, and has application and promotion value.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
amorphous co x mn y the w 4 Preparation method and application of activated carbon composite catalytic material
ActiveCN113398948BChange the rate of a chemical reactionLarge specific surface areaOrganic compound preparationHeterogenous catalyst chemical elementsCatalytic methodFreeze-drying
The invention discloses amorphous Co x mn y WO 4 / preparation method and application of activated carbon composite catalytic material, wherein the method steps of catalytic material preparation are as follows: S11: preparation of dispersion liquid: under room temperature, fully dissolve inorganic metal cobalt salt, manganese salt in water, then add activated carbon in the solution, And the dispersion liquid of cobalt salt, manganese salt and activated carbon was prepared by ultrasonic treatment; S12: amorphous Co x mn y WO 4 / Preparation of activated carbon composite material: At room temperature, add sodium tungstate solution to the dispersion liquid in S11 while stirring at a speed of 200-500r / min to form a mixed solution, and keep stirring for 10-30min, and the reacted product After filtration and cleaning, the amorphous Co was obtained after vacuum freeze-drying. x mn y WO 4 / Activated carbon composite catalytic material. The invention can realize the conversion rate of ethylbenzene exceeding 80%, and the selectivity of the acetophenone product exceeding 90%, which are much higher than the traditional catalytic method.
Owner:HEFEI UNIV OF TECH
Preparation method and application of nano nickel phosphide
ActiveCN102040203BShort timeConducive to large-scale industrial productionPhysical/chemical process catalystsNanotechnologyNickel saltNitrobenzene
Owner:NANTONG ZHONGXING MAGNETIC IND
Two-dimensional Ni-Ir porous nanosheet and preparation method and application thereof
The invention discloses a two-dimensional Ni-Ir porous nanosheet and a preparation method and application thereof. The preparation method comprises the steps that nickel cyanide and iridium salt serve as precursors, a Hoffman type complex precursor of a two-dimensional layered structure is prepared through oil bath heating, and after high-temperature calcination oxidation, the Hoffman type complex precursor is reduced under a specific electrochemical window to obtain the two-dimensional Ni-Ir porous nanosheet. Compared with a traditional preparation method, the method disclosed by the invention is simple in process operation, heteroions in the solution can be removed by using deionized water, greenhouse gases cannot be released in the calcination oxidation process, and the electrochemical reduction process is clean, environment-friendly and pollution-free. The two-dimensional Ni-Ir porous nanosheet prepared by the method is extremely high in purity, has the advantages of large specific surface area, multiple active sites, good electron conductivity, stable structure and the like, and shows excellent electrocatalytic activity on oxygen evolution.
Owner:NANJING NORMAL UNIVERSITY
A kind of two-dimensional ni-ir porous nanosheet and its preparation method and application
ActiveCN112795950BEasy transferFacilitated DiffusionNanotechnologyElectrodesIridiumElectrochemical window
The invention discloses a two-dimensional Ni-Ir porous nanosheet and its preparation method and application, using nickel cyanide and iridium salt as precursors, and preparing a two-dimensional layered structure Hoffman type complex precursor through oil bath heating , and after high-temperature calcination and oxidation, a two-dimensional Ni‑Ir porous nanosheet was obtained by reduction under a specific electrochemical window. Compared with the traditional preparation method, the method of the present invention has simple process operation, can remove the miscellaneous ions in the solution by using deionized water, does not release greenhouse gas during the calcination oxidation process, and the electrochemical reduction process is clean, environment-friendly and pollution-free. The two-dimensional Ni-Ir porous nanosheet prepared by the method of the present invention has extremely high purity, has the advantages of large specific surface area, many active sites, good electronic conductivity, stable structure, etc., and exhibits excellent electrocatalytic activity for oxygen evolution.
Owner:NANJING NORMAL UNIVERSITY
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