38 results about "Indium nitrate" patented technology

The application discloses an indium-based oxide catalyst, which is prepared by the following method: step one, adding indium nitrate, isophthalic acid, DMF, acetonitrile, imidazole and nitric acid into a reaction kettle, reacting at 80 DEG C for 12 hours, then heating to 100 DEG C and reacting for 24 hours, washing with DMF and anhydrous ethanol respectively, and vacuum drying for 12 hours to obtain an In-MOF precursor; step two, keeping the In-MOF precursor under the condition of nitrogen atmosphere and 200-600 DEG C for 4 hours, and naturally cooling to room temperature to obtain the indium-based oxide catalyst. Most of the prepared indium-based oxide catalysts still retain the corresponding three-dimensional hierarchical porous framework structure of the original MOF; the indium-based oxide catalyst contains highly dispersed metal active sites inside, effectively reduces the aggregation of metal oxides or metal elements, and thus exhibits more excellent catalytic activity; the organic ligand isophthalic acid generates a large amount of carbon material through pyrolysis under an inert atmosphere, greatly improving the conductivity of the indium-based oxide catalyst.

The application discloses a synthesis method of nitrogen-doped carbon-coated In2O3-CdSe hexagonal nanorod, and comprises the following steps: dissolving indium nitrate tetrahydrate and terephthalic acid in an organic solvent, transferring the mixture into a reaction kettle after ultrasonic treatment for 10 minutes, heating the mixture for a period of time, centrifuging and collecting the product after the reaction is completed, cleaning the product with ethanol, and drying the product to obtain a MIL-68-In precursor with a hexagonal nanorod structure; dispersing the MIL-68-In precursor in an organic solvent containing dissolved cadmium acetate, transferring the mixture into a reaction kettle after ultrasonic treatment for 10 minutes, heating the mixture for a period of time, centrifuging and collecting the product after the reaction is completed, cleaning the product with ethanol for several times, drying the product, and using the product for further use, and then calcining the synthesized sample and selenium powder in a tube furnace to obtain In2O3-CdSe@N-C. The application synthesizes the In2O3-CdSe@N-C hexagonal nanorod photocatalyst through a solvothermal and calcination method, and the synthesized photocatalyst has higher photocatalytic activity than the MIL-68-In.

The invention provides a preparation method and application of a plasma-assisted catalyst for preparing methanol through CO2 hydrogenation, and belongs to the field of catalysts. Raw materials adopted by the method comprise biomass, metal salt and a precipitator, the molar ratio of the biomass to the metal salt is (0.05-1): 1, the biomass is one of chitosan, hyaluronic acid and alginic acid, and the metal salt is one or more of indium nitrate, cobalt nitrate, zirconium nitrate, zirconyl nitrate, titanium sulfate and aluminum nitrate; the catalyst is subjected to nitrogen doping and / or more oxygen vacancy metal interfaces are formed through combination of coprecipitation and plasma treatment, so that the carbon dioxide adsorption and activation capacity and the overall hydrogenation efficiency of the catalyst in the process of preparing methanol through carbon dioxide hydrogenation are effectively improved.

The invention discloses a preparation method of an efficient bionic photocatalytic material. The preparation method comprises the following steps: soaking rose leaves in a glutaraldehyde solution; soaking the rose leaves in a hydrochloric acid solution; the pretreated rose leaves are placed in a tetrabutyl titanate solution, and a precursor material A is obtained; oxidizing cobalt hydroxide into cobalt oxide in a muffle furnace to obtain a precursor material B; depositing indium nitrate on the precursor material B to obtain a precursor material C; calcining the precursor material C in a muffle furnace, removing part of the biological template, and converting the remaining biological template into a biological carbon carrier; placing the carbon-based bionic photocatalyst in an N2 inert gas protective atmosphere, and calcining the carbon-based bionic photocatalyst in a tubular furnace; and taking out the calcined material, cooling to room temperature, and cleaning the cooled material for multiple times to obtain the bionic photocatalyst. The preparation method of the efficient bionic photocatalytic material is used for efficiently degrading organic matters in water.

This invention discloses a defect-state indium oxide photothermal catalyst, its preparation method, and its application. The catalyst is indium oxide (In₂O) containing oxygen vacancies. 3‑x The catalyst exhibits a co-doped cubic and hexagonal crystal structure. The oxygen defects include oxygen vacancies and unsaturated In(III) sites associated with these vacancies. The preparation method involves a solvothermal reaction of indium nitrate and urea in a 50-95 v / v% ethanol aqueous solution to obtain the precursor c / h-InOOH. The precursor is then calcined to obtain c / h-In2O3. Finally, c / h-In2O3 is heat-treated with a reducing agent to construct oxygen defects. This invention, through crystal doping and the synergistic structure of oxygen defects in In2O3, enables the catalyst to possess full-spectrum absorption capabilities, more efficient carrier separation capabilities, and photothermal synergistic capabilities, thereby improving the efficiency of photothermal catalytic degradation of PFOA.

The invention belongs to the technical field of wave-absorbing materials, and particularly relates to an InNi3C0.5 / Ni-coated C composite wave-absorbing material and a preparation method thereof. The preparation method comprises the following steps: preparing a Ni-MOFs precursor by taking nickel nitrate and terephthalic acid as raw materials and adopting a solvothermal method, doping indium nitrate with different concentrations into the precursor through an ion exchange strategy to prepare an In / Ni-MOFs composite material, and carrying out high-temperature carbonization treatment on the In / Ni-MOFs composite material to finally obtain the spherical porous composite material. The spherical structure of the composite material provided by the invention can provide an axial carrier channel, promote jumping and migration of electrons, form an effective conductive network and enhance the wave absorbing performance. The problems of poor impedance matching, high density and high filling rate of the traditional carbide are solved, the preparation process is simple, the raw material cost is low, and the prepared wave-absorbing material has the characteristics of strong absorption, wide band and low thickness.

The application discloses a kind of synthesis method for preparing structure is hydrangea-like MnCdS / In2S3 / NiAl-LDH photocatalyst by two-step hydrothermal method, belong to composite material and photocatalytic technical field.Sulfaceticamide (TAA), cadmium acetate dihydrate ((CH3COO)2Cd·2H2O), manganese acetate tetrahydrate (Mn(CH3COO)2·4H2O), indium nitrate 4.5 hydrate (In(NO3)3·4.5H2O), nickel nitrate hexahydrate (Ni(NO3)2·6H2O), aluminum nitrate nonahydrate (Al(NO3)3·9H2O), ammonium fluoride (NH4F), urea (CO(NH2)2) are used as raw materials, monomer is treated by two-step hydrothermal method, and hydrangea-like MnCdS / In2S3 / NiAl-LDH composite photocatalyst is obtained.The surface morphology, microstructure and photocatalytic activity are determined, and the product performance is greatly improved in the photocatalysis of degrading organic pollutants crystal violet and photolysis water to produce hydrogen.

The present application relates to a kind of indium-poor tungsten bronze phase mosaic block assembled composite material and its preparation method, and the indium-poor tungsten bronze phase mosaic block assembled composite material is by In 0.02 WO3 is formed by WO3 compound, there are many tunnels consisting of the interval between tungsten and oxygen atom in the indium-poor tungsten bronze phase mosaic block assembled composite material, and indium ions are randomly distributed on both sides of the tunnel center position.Method: step one, create supersaturated sodium sulfate solution environment;Step two, in the supersaturated sodium sulfate solution environment obtained in step one, add indium nitrate, add NH4Cl hydrothermal reaction;Step three, centrifugation;Step four, sodium tungstate, oxalic acid and ammonium chloride are sequentially added to deionized water, drop into HCL, add the product of step three hydrothermal reaction, centrifugation and washing, finally the indium-poor tungsten bronze phase mosaic block assembled composite material is prepared.The material has high sensitivity to acetone gas, and the working temperature is low.

The application discloses a preparation method and application of Yb and Er co-doped S-type heterojunction, and the Yb and Er co-doped S-type heterojunction is synthesized by using indium nitrate, silver nitrate and thioacetamide as raw materials, through a hydrothermal method, AgIn5S8 is synthesized by etching Ti3AlC2 through HF, Ti3C2T x MXene. Bismuth nitrate and potassium chloride are used as raw materials, a certain amount of ytterbium nitrate, erbium nitrate, AgIn5S8 and MXene are added, then a Yb and Er co-doped BiOCl / MXene / AgIn5S8 composite material is synthesized through an in-situ hydrothermal growth method, and the catalyst is applied to degradation of wastewater containing tetracycline hydrochloride, can realize effective degradation of antibiotic wastewater under visible light and near-infrared light respectively. Meanwhile, the catalyst has full-spectrum response performance, can fully utilize clean energy solar energy, and realizes efficient purification of water pollutants.

The application relates to an indium-doped copper oxide electrode for electrocatalytic reduction of CO2 and a preparation method thereof, and belongs to the technical field of electrocatalytic reduction. Copper chloride and indium nitrate are used as raw materials, sodium hydroxide is used as a precipitant, a precursor is obtained through co-precipitation, the precursor is decomposed through heating, centrifugal washing and vacuum drying, and an indium-doped copper oxide catalyst is obtained, ink is prepared by mixing water, ethanol and a naphthol solution, the ink is uniformly coated on carbon paper and dried to obtain the indium-doped copper oxide electrode. The prepared indium-doped copper oxide electrode has high catalytic activity and good stability, indium atoms are doped in the copper oxide crystal lattice, the kinetics of the catalyst is improved, the desorption of carbon monoxide from the surface is accelerated, the doping of indium can improve the stability of the catalyst and inhibit the generation of hydrogen, a competitive product. The operation process is simple, raw materials are easy to obtain, no pollution is caused, no expensive equipment is needed, and the application has a wide application prospect.

The application discloses a preparation method of a hydrogen molybdenum bronze-sulfur indium zinc composite photocatalyst and belongs to the technical field of nanometer material preparation. Sodium molybdate is used as a precursor, is dispersed in water, nitric acid is added, and molybdenum trioxide is obtained through aging; then the molybdenum trioxide is dispersed in water, zinc sulfate, indium nitrate and thioacetamide are added, and MoO3-ZIS is obtained through hydrothermal reaction; the obtained MoO3-ZIS is added into an aqueous nitric acid solution, and H x MoO3-ZIS composite is generated through irradiation. The preparation method of the hydrogen molybdenum bronze-sulfur indium zinc composite photocatalyst is simple in preparation process, convenient in operation, high in yield, and stable in product performance.

The application belongs to the field of gas sensors, discloses a kind of indium oxide composite material based on palladium doping and its preparation method and application, its preparation process is to utilize indium nitrate, anhydrous ethanol, ammonia, deionized water to prepare indium oxide material, then doping palladium ion in indium oxide solution to obtain palladium ion doped indium oxide solution, using sodium borohydride reduction, centrifugal to obtain palladium doped indium oxide composite material, then prepare into gas sensor.The application can effectively solve the problems of high activation energy required for pure indium oxide gas sensor reaction and lack of selectivity of pure semiconductor surface to sulfide by improving the design of key process flow of preparation method, and realizes the detection of dimethyl disulfide gas.

The invention discloses a preparation method of a hydrogen molybdenum bronze-sulfur indium zinc composite photocatalyst, and belongs to the technical field of nano material preparation, the preparation method comprises the following steps: using sodium molybdate as a precursor, dispersing in water, adding nitric acid, and aging to obtain molybdenum trioxide; dispersing molybdenum trioxide in water, adding zinc sulfate, indium nitrate and thioacetamide, and carrying out hydrothermal reaction to obtain MoO3-ZIS; and adding the obtained MoO3-ZIS into a nitric acid aqueous solution, and carrying out illumination to generate the HxMoO3-ZIS compound. The preparation method of the hydrogen molybdenum bronze-sulfur indium zinc composite photocatalyst is simple in preparation process, convenient to operate, high in yield and stable in product performance.

The invention discloses a method for preparing an indium oxide powder material, which comprises the following steps: with indium nitrate and 1, 4-naphthalic acid as reaction raw materials, adding a surface modifier accounting for 0-20% of the total mass of the reaction raw materials into an organic solvent system to prepare an indium-based metal organic framework material; separating, washing and drying the indium-based metal organic framework material to obtain an indium-based metal organic framework precursor; and annealing the indium-based metal organic framework precursor to obtain the indium oxide powder material. According to the preparation method, 1, 4-NDC is selected as an organic bridging ligand, the concentration of the 1, 4-NDC and the dosage of a surface modifier are regulated and controlled, an In-MOF structure with a special morphology can be formed through induction, and the morphology can be kept intact through adjustment of the annealing temperature and parameters; the morphology controllability of the indium oxide particles allows crystal face exposure and charge transfer paths of the indium oxide particles to be customized, and the performance of the indium oxide particles in optoelectronic equipment, energy storage and photocatalysis is optimized.

The invention belongs to the technical field of condensing lenses, and discloses a condensing lens and a preparation method and application thereof, and the preparation method comprises the following steps: obtaining an arc-shaped substrate, and coating the surface of the condensing side of the arc-shaped substrate with SiO2 to form a transition layer; spin-coating a first precursor solution on the surface of the transition layer, and annealing to obtain a condensing lens; wherein the first precursor solution is obtained by mixing indium nitrate and tin acetate according to the mass ratio of indium element to tin element of 9: 1, then adding the mixture into a first mixed solution of ethylene glycol monomethyl ether, monoethanolamine and H2O2 according to the volume ratio of 1: (0.1-0.2): (0.05-0.08), uniformly mixing and aging. According to the method, the technical bottlenecks of poor coating uniformity and insufficient film adhesion of a traditional arc-shaped surface are broken through, uniform spreading and tight attachment of the film on the surface of the arc-shaped substrate are guaranteed through the collaborative design of double-stage dynamic spin coating and the composite film, organic unification of interface adaptation and function enhancement is achieved, and the application range of the arc-shaped surface is widened. And the overall performance stability and the optical application effect of the condensing lens are effectively improved.

This invention relates to a method for preparing porous indium powder. The method uses indium nitrate tetrahydrate as the indium source, 2-aminoterephthalic acid as the main ligand, and 1-butylimidazole as the auxiliary ligand, dissolved sequentially in N,N-dimethylformamide at a molar ratio of 1:(1.2-1.5):(0.1-0.2). Indium-based MOF powder is synthesized through a stepwise high-pressure reaction. The MOF powder is then placed in an argon-hydrogen mixed gas atmosphere and reduced by stepwise temperature increases to prepare a composite precursor indium particles embedded in a carbon matrix. Finally, the composite precursor indium particles embedded in the carbon matrix is ​​dispersed in an acetic acid and citric acid etching solution, intermittently ultrasonically etched, filtered, washed, and dried to obtain porous indium powder. This invention can improve the specific surface area and ion / electron transport efficiency of indium powder, reduce oxygen content, and reduce indium powder agglomeration, thereby improving the adsorption performance and catalytic activity of indium powder.

The application relates to a low-temperature gas-sensitive material with an In2O3 layer grown on a ZnSnO3 surface and a preparation method thereof. The ZnSnO3 is an Archimedean solid particle, each triangular face around a multi-dimensional surface of the Archimedean solid particle is surrounded by three quadrilateral faces, each quadrilateral face shares a side with the triangular face, and In2O3 nanoparticles are uniformly grown on the multi-dimensional surface of the ZnSnO3 Archimedean solid particle to form a uniformly-distributed In2O3 particle composite layer. The method is as follows: zinc oxalate is dissolved in deionized water, tin chloride is added, sodium hydroxide particles are added, an indium nitrate solution is dropped, centrifugation is carried out after hydrothermal reaction, washing and drying are carried out, and finally calcination is carried out. The ZnSnO3 / In2O3 composite material has higher base resistance in air, high sensitivity to ethylene glycol gas and triethylamine gas, and low working temperature. The application has low preparation cost and good industrial application prospect.

The application discloses a preparation method and product of 1-octene-3-ol gas-sensitive material and application thereof, and improves the response of ternary metal oxide to 1-octene-3-ol through rare earth element doping. The preparation method comprises the following steps: taking a mixed solution of isopropyl alcohol and glycerol as a solvent, taking cadmium nitrate tetrahydrate and hydrated indium nitrate as cadmium sources and indium sources, and taking appropriate nitrate erbia hexahydrate to realize rare earth element Er doping; after water bath assisted dissolution, the mixed solution is transferred into a stainless steel high-pressure reaction kettle for sealing reaction; after the reaction is completed, the precursor material is obtained through washing and drying, and the gas-sensitive material is obtained through calcination. The gas-sensitive material prepared by the application has good response sensitivity to 1-octene-3-ol, and the electron mobility is further improved through rare earth element doping, so that the detection accuracy of the material under low VOC concentration is improved. The preparation method is simple and practical, and can be used for monitoring the aging phenomenon in the storage process of rice, so as to provide protection for food safety and fair trade of grain.

This invention relates to a method for preparing and applying a polypyrrole-coated indium-based electrocatalyst. The method includes the following steps: adding carbon nanotubes to an N,N-dimethylformamide solution containing indium nitrate, transferring the solution to a high-temperature reactor, and reacting to obtain In₂O₃ / CNT; placing the In₂O₃ / CNT in an aqueous solution containing pyrrole, and then adding ammonium persulfate to react, thereby obtaining the polypyrrole-coated indium-based electrocatalyst. The polypyrrole-coated indium-based electrocatalyst obtained by this invention exhibits excellent electrocatalytic performance in the reduction of carbon dioxide to formic acid, possessing both high Faradaic efficiency and long-term catalytic stability.

The invention relates to the technical field of catalysts, in particular to a gold-based catalyst for preparing vinyl chloride and a preparation method of the gold-based catalyst, which are particularly suitable for an acetylene hydrochlorination reaction system in industrial production of polyvinyl chloride. The gold-based catalyst is prepared from the following raw materials in percentage by mass: 0.05%-1.0% of an active component HAuCl44H2O, 0.5%-5.0% of a cocatalyst and 0.05%-0.5% of a functional intermediate product I, wherein the functional intermediate product I is generated by carrying out hydrothermal reaction on sodium telluride, sodium dihydrogen phosphate and tetrabutyl titanate according to a molar ratio of 1: (0.5-2): (0.2-1); 0.1%-1.0% of a functional intermediate product II, wherein the functional intermediate product II is generated by reaction of gallium nitrate, indium nitrate and zirconium oxychloride according to a molar ratio of 1: (0.3-1): (0.2-0.8); 0.1%-0.8% of a nano zinc oxide-graphene composite dispersant; the balance is a composite modified activated carbon carrier.

The invention discloses an electrolyte and a preparation method and application thereof, and belongs to the field of chemical power sources. The electrolyte comprises lithium bis (fluorosulfonyl) imide, lithium bis (oxalato) borate, an additive and a solvent, the additive is indium nitrate. A small amount of lithium bis (oxalato) borate salt with relatively high HOMO energy level is added into the electrolyte to generate a boron-rich positive electrode interface layer, so that side reaction and particle cracks are effectively inhibited, and the cycling stability and safety are improved; a non-flammable mixed solvent of triethyl phosphate and methyl perfluorobutyl ether with a low HOMO energy level is adopted to reduce a large amount of decomposition of the solvent on the positive electrode side, so that the safety of the battery is improved; an additive In (NO3) 3 is introduced into the electrolyte to regulate and control a solvation structure of lithium ions, a lithium-loving and lithium-phobic dual-function SEI layer is constructed, and the cycling stability of LMB is improved.

This invention relates to a tubular ZnS / In₂O₃ sunlight-activated NO₂ gas sensing material and its preparation method, belonging to the technical fields of nanomaterial preparation, atmospheric environment detection, and gas sensors, with promising application prospects. The key feature is the use of indium nitrate pentahydrate as the indium source, with an indium oxide precursor prepared via a simple hydrothermal and calcination method. Then, using zinc acetate dihydrate as the zinc source, an In₂O₃ / ZnS composite material is prepared via a hydrothermal method. This material features spherical ZnS distributed on the inner and outer walls of the tubular In₂O₃, constructing a type II heterojunction, achieving effective separation of photogenerated electrons and holes, and improving gas-sensing performance. Under natural sunlight excitation, it achieves a high sensitivity response to NO₂ at room temperature, with a response value as high as 1088.31 for 10 ppm NO₂ gas, which is 9.2 times its response value under dark and thermally activated (60°C) conditions.

The present application relates to the technical field of electrically and thermally conductive polymer composite materials, and particularly relates to a preparation method of a high-conductivity and high-thermal-conductivity sheet-shaped gallium-indium-doped AZO, the sheet-shaped gallium-indium-doped AZO and a composite material, which comprises the following steps: (1) heating and stirring aluminum nitrate, gallium nitrate, indium nitrate, ethylene glycol, oxalic acid and PVA to obtain an aluminum sol; (2) stirring and reacting the aluminum-gallium-indium composite sol with graphene oxide and zinc acetate, and drying to obtain an aluminum-gallium-indium composite sol zinc acetate-coated graphene oxide powder; (3) calcining the above powder in a sintering furnace to obtain a sheet-shaped gallium-indium-doped AZO powder; and (4) modifying the gallium-indium-doped AZO using a prepared silane coupling agent solution to obtain a final product. The present application is simple in process, strong in operability and easy to mass-produce continuously.

The application belongs to the technical field of gas sensors, and particularly relates to a n-butanol gas sensor composite material and a preparation and use method thereof. The response effect of single In2O3 and CoSnO3 on n-butanol is not ideal in the prior art. A precursor CoSn(OH)6 is prepared by using a cobalt sulfate and sodium stannate aqueous solution, an In(OH)3 precursor is prepared by hydrothermal reaction of an indium nitrate aqueous solution, CoSn(OH)6 is mixed with In(OH)3 and then ground and calcined to obtain a CoSnO3-In2O3 composite material. The sensor prepared from the composite material has high sensitivity, good selectivity and repeatability to n-butanol at 250 DEG C, and the detection limit is as low as 20 ppb, and has good practical application value.

The invention discloses a preparation method of a catalyst for photocatalytic reduction of CO2 into CO by using a nickel-ruthenium bimetal-loaded oxygen vacancy-rich indium oxide semiconductor material. Firstly, indium nitrate hydrate and nickel nitrate hexahydrate are used as substrates, a high-temperature and high-pressure hydrothermal reaction is utilized, a nickel source is added into a precursor, oxygen vacancies are introduced through calcination of a muffle furnace, a nickel-loaded oxygen-vacancy-rich indium oxide material is prepared, and then metal ruthenium is loaded to the surface of the nickel-loaded oxygen-vacancy-rich indium oxide material through a photodeposition method. A series of characterization proves that the catalyst is black powder, has excellent absorption in a full visible spectrum section of 200-1000 nm and excellent photo-thermal catalytic activity, and shows excellent activity when being applied to a reaction for photocatalytic reduction of CO2 into CO, the generation rate of CO can reach 892.84 [mu] mol g <-1 > h <-1 >, and the selectivity is 77.1%.

The invention relates to the technical field of photocatalysts, in particular to an In2O3-loaded Ni monatomic photocatalyst and a preparation method and application thereof.The preparation method comprises the following steps that nickel acetate tetrahydrate is added into an indium nitrate aqueous solution and stirred to be uniform, and a metal mixed solution is obtained; adding ammonium carbonate into the metal mixed solution, and carrying out hydrolysis reaction to obtain a sol system; filtering the sol system to obtain a wet gel-like solid-phase substance; drying, grinding and calcining the wet gel-like solid-phase substance to obtain an In2O3 loaded Ni monatomic catalyst; by optimizing the metal loading capacity and the preparation process of the catalyst, the catalyst has excellent performance in the aspects of high reaction activity, high product selectivity, high structural stability, mild reaction conditions and the like, so that the CO2 reduction reaction rate is effectively increased, and the service life of the catalyst is prolonged.

The application belongs to the technical field of photocatalysts, and particularly relates to a defect-rich In-based two-dimensional sheet-shaped high-entropy oxide and a preparation method and application thereof. The application comprises the following steps: S1, adding urea and polyvinylpyrrolidone into deionized water, and obtaining an A solution after stirring; S2, adding indium nitrate tetrahydrate, nickel nitrate hexahydrate, cobalt nitrate hexahydrate, cerium nitrate hexahydrate and lanthanum nitrate hexahydrate into deionized water, and obtaining a B solution after stirring; S3, under the condition of stirring, adding the B solution into the A solution, and continuously stirring for more than 30 min; then, freezing the mixed solution until complete freezing, and performing drying treatment to obtain a precursor; and S4, performing calcination on the precursor, and grinding after naturally cooling to room temperature to obtain the defect-rich In-based two-dimensional sheet-shaped high-entropy oxide. The high-entropy oxide is uniform in thickness, and can greatly improve the photocatalytic CO2 reduction performance.

The invention belongs to the technical field of catalysts and application thereof, and relates to an In-Zr composite catalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, dissolving indium nitrate and zirconium nitrate in water to prepare a precursor solution; s2, under a stirring condition, dropwise adding a sodium carbonate solution into the precursor solution, and stopping dropwise adding until the pH value is 10; then aging, filtering, washing, drying and calcining to obtain a powder sample; and S3, putting the powder sample into a DBD reactor, and carrying out segmented treatment under the power of 50-70W for 20-30 minutes, so as to obtain the In-Zr composite catalyst. The In-Zr composite catalyst prepared by the invention has excellent thermal stability and can be continuously used at high temperature, the service life of the catalyst is obviously prolonged, and the conversion rate of carbon dioxide is improved.

The invention provides ink for preparing a semiconductor film, the semiconductor film and a preparation method of the semiconductor film, and belongs to the field of semiconductors. The invention provides ink for preparing a semiconductor film. The ink comprises the following components: indium salt, polyethylene glycol, a surfactant and an inorganic solvent, the molecular weight of the polyethylene glycol ranges from 20000 to 50000, or the molecular weight of the polyethylene glycol ranges from 1000000 to 5000000; when the molecular weight of the polyethylene glycol is 20000-50000, the mass of the polyethylene glycol is 1% of the mass of the indium nitrate; and when the molecular weight of the polyethylene glycol is 1000000-5000000, the mass of the polyethylene glycol is 1-2% of the mass of the indium nitrate. A weak coordinate bond is formed by an ether oxygen group of PEG and In < 3 + >, hydrolytic agglomeration of indium salt is inhibited, the dispersed state and ordered structure of indium oxide nanocrystals are regulated and controlled, and the carrier mobility is improved by adjusting the molecular weight and dosage of polyethylene glycol.

The application discloses a preparation method and application of a binary oxide supported metal catalyst, and the preparation method comprises the following steps: mixing a metal salt solution, an organic ligand and an additive, or mixing a metal salt solution and an alkali solution, aging, drying and calcining to obtain the binary oxide supported metal catalyst; the metal salt solution is selected from at least two of magnesium nitrate, chromium nitrate, manganese nitrate, iron nitrate, cobalt nitrate, nickel nitrate, copper nitrate, zinc nitrate, gallium nitrate, silver nitrate, indium nitrate and stannous chloride. The application is matched with a continuous reactor-fixed bed, and the production efficiency of 2-methylpropenol is greatly improved. Under the condition that hydrogen is used as a reducing agent and without a solvent, the conversion rate of methylpropenal on the catalyst reaches 83%, the selectivity of 2-methylpropenol is 90%, and the catalyst can be stably operated for a long time.