49 results about "Gallium nitrate" patented technology

The invention discloses gallium ion-quercetin coordination nanoparticles (GQNPs) as well as a preparation method and application thereof, specifically, quercetin, gallium nitrate hydrate and polyvinylpyrrolidone are respectively dissolved in an absolute methanol solution to prepare a quercetin solution, a gallium nitrate hydrate solution and a polyvinylpyrrolidone solution; secondly, fully mixing the quercetin solution and the polyvinylpyrrolidone solution, dropwise adding the gallium nitrate hydrate solution, and rapidly changing the color of the mixed solution from faint yellow to orange yellow in the dropwise adding process; and finally, dialyzing the orange-yellow mixed solution to remove excessive gallium ions and polyvinylpyrrolidone, thereby finally obtaining the GQNPs. The prepared GQNPs and deferiprone show excellent treatment effects on cell and living body levels, are expected to be applied to treatment of Parkinson's disease through multi-dimensional anti-ferroptosis, do not show obvious toxic and side effects in the embodiment, and are expected to be applied to further preclinical research.

The invention belongs to the technical field of biomedical materials, and particularly relates to a long-acting antibacterial biomass orthopedic material and a preparation method thereof. The nutrient solution is prepared from the following raw materials: calcium nitrate tetrahydrate, ammonium dihydrogen phosphate, gallium nitrate, zinc nitrate hexahydrate, antibiotics, 2-methylimidazole, sulphobetaine methacrylate and a photoinitiator. A three-layer synergistic structure is constructed through a Ga-doped beta-tricalcium phosphate core / a pH-responsive ZIF-8 and antibiotic shell / a photocuring sulfobetaine (pSBMA) brush layer, and the process adopts three conventional continuous steps of water-phase coprecipitation, room-temperature self-assembly and room-temperature photocuring, so that a high-energy physical deposition or complex surface activation process is avoided; the interlayer compatibility and repeatability are ensured; the finally obtained biomass material realizes triple functions of adhesion barrier resistance, drug burst release and long-term ion antibiosis in a microscopic level, and maintains biocompatibility in a macroscopic level.

The invention provides a gallium nitrate modified Prussian blue nano composite material as well as a preparation method and application thereof, and the gallium nitrate modified Prussian blue nano composite material comprises Prussian blue nano particles and gallium nitrate loaded on the Prussian blue nano particles, according to the preparation method, gallium ions are loaded on the Prussian blue nanoparticles in an ion replacement manner. Through the synergistic effect of Prussian blue and gallium ions, the synergistic effect of photothermal therapy and ion release is achieved, damage to normal tissue or cells is avoided, the sterilization effect can be improved, the concentration needed for antibiosis is low, and meanwhile the good biocompatibility, antioxidant activity and spectrum sterilization effect are achieved.

The application discloses a residual oil hydrodemetallization catalyst and a preparation method thereof. The method comprises the following steps: (1) an acid aluminum salt aqueous solution, an alkaline aluminum salt aqueous solution and a kaolin suspension liquid containing a surfactant are subjected to a first reaction to obtain slurry I; (2) an alkaline solution is introduced into the slurry I of step (1) to perform a second reaction to obtain slurry II; (3) the slurry II obtained in step (2) is subjected to hydrothermal treatment with a gallium nitrate solution, and then washed and dried to obtain a gallium-containing macroporous silica-aluminum material; (4) the gallium-containing macroporous silica-aluminum material is mixed with a plasticizing agent and a cementing agent, and then kneaded into a shape, and then dried and calcined to obtain a catalyst carrier; and (5) the catalyst carrier of step (4) is impregnated with an active metal impregnation liquid containing an organic acid and an alcohol compound, and then dried and calcined to obtain the residual oil hydrodemetallization catalyst. The catalyst can improve the demetallization activity and use stability of the catalyst in a residual oil hydroprocessing process.

The invention relates to a preparation method of a PtGaGe alloy-loaded oxygen-doped carbon nanotube and application of the PtGaGe alloy-loaded oxygen-doped carbon nanotube in electro-catalytic oxygen reduction.The preparation method comprises the steps that firstly, the oxygen-doped carbon nanotube is prepared through a carboxylation method, and then platinum nitrate tetraammine, gallium nitrate and ammonium hexafluorogermanate are evenly mixed; the preparation method comprises the following steps: adding a PtGaGe alloy into an aqueous solution of an oxygen-doped carbon nanotube while continuously stirring, uniformly stirring at room temperature, freeze-drying, and roasting in a tubular furnace to finally realize successful loading of the PtGaGe alloy, thereby obtaining PtGaGe / OCNTs. As a novel preparation method, the trimetal alloy can be successfully prepared under the low-temperature condition, and the preparation method has the advantages of being simple in preparation process, mild in reaction condition, controllable in alloy variety and content and the like. According to the invention, the unique double p-d orbital hybridization characteristic in the ternary PtGaGe alloy is utilized, the electron structure of platinum is cooperatively regulated and controlled, the atom utilization rate and the catalytic efficiency of the ternary PtGaGe alloy are simultaneously improved, and the tradeoff relationship between activity and selectivity is successfully broken through.

The invention belongs to the technical field of photocatalytic materials, and particularly relates to a manganese ferrite / zinc gallate heterojunction photocatalyst as well as a preparation method and application thereof. The preparation method comprises the following steps: 1) dissolving zinc acetate and gallium nitrate hydrate in deionized water, then adding citric acid monohydrate, and obtaining zinc gallate by using a sol-gel method; 2) dissolving ferric chloride hexahydrate and manganese chloride tetrahydrate in deionized water, then adding a sodium hydroxide solution, and obtaining manganese ferrite by using a hydrothermal method; 3, zinc gallate and manganese ferrite are dissolved in a methanol solution, and the manganese ferrite / zinc gallate heterojunction photocatalyst is obtained through a mechanical stirring method.By means of heterojunction formation, the activity of the manganese ferrite / zinc gallate for photocatalytic reduction of carbon dioxide can be greatly improved.

This invention relates to a catalyst for the hydrogenation of carbon dioxide to methanol, its preparation method, and its application. The preparation method of the catalyst includes the following steps: (1) mixing an aqueous solution of zinc salt, zirconium salt, and gallium nitrate with an alkaline solution; aging; the mixing temperature is 65-85℃, the pH value is 8.2-11.5; the molar ratio of Zn to Zr is 0.15-1.0:1.0; (2) separating, drying, and calcining the aged product to obtain a catalyst precursor; (3) reducing the catalyst precursor to obtain a catalyst for the hydrogenation of carbon dioxide to methanol; the mass percentage of Ga in the catalyst is 1.0-2.0%. The technical problem to be solved is to provide a composite oxide catalyst of Ga, Zn, and Zr, in which the mass percentage of Ga is 1.0-2.0%. When used in the catalytic hydrogenation of carbon dioxide to methanol, it has a carbon dioxide conversion rate of 14.6-17.7% and a methanol selectivity of 80.1-83.6%, which is beneficial to the industrial-scale production of methanol by the hydrogenation of carbon dioxide.

The invention discloses a gallium metal organic framework material which is prepared by the following steps: (1) dissolving 2-aminoterephthalic acid and itaconic acid in an organic solvent to obtain a solution A; (2) dissolving gallium nitrate hydrate in an organic solvent to obtain a solution B containing gallium ions; and (3) mixing the solution A with the solution B, heating at 50-70 DEG C for 3-5 hours, centrifuging, collecting the precipitate, and purifying to obtain the product. Itaconic acid and 2-aminoterephthalic acid are combined as double ligands, gallium ions are used as metal nodes, the gallium metal organic framework material is jointly constructed, the technical problems that itaconic acid in a free form is short in biological half-life period and low in cellular uptake efficiency are solved, the itaconic acid and the gallium ions are coordinated to achieve anti-inflammatory and antibacterial effects, and the gallium metal organic framework material has good application prospects. The compound can remove planktonic bacteria, has strong anti-biofilm activity, and can be used for preparing drugs for treating suppurative arthritis.

The invention relates to the field of photocatalysts, in particular to a lanthanum oxycarbonate-gallium oxide composite photocatalyst for catalytic reduction of carbon dioxide and a preparation method thereof.The preparation method comprises the following steps that S1, sodium carbonate, sodium fluoride and lanthanum nitrate hexahydrate are dissolved in deionized water and stirred and mixed at the room temperature, then a hydrothermal reaction is conducted, and a precursor is obtained; after cooling, filtering, washing and drying in sequence to obtain a sodium lanthanum carbonate precursor; s2, weighing gallium nitrate, mixing with the sodium lanthanum carbonate precursor, grinding, and uniformly mixing to obtain a composite precursor; and S3, in a protective atmosphere, carrying out temperature programming treatment on the composite precursor, and naturally cooling to room temperature to obtain the lanthanum oxycarbonate-gallium oxide composite photocatalyst. The photocatalytic CO2 reduction performance of the composite photocatalyst prepared by the invention is superior to that of single lanthanum oxycarbonate and gallium oxide catalysts, and the composite photocatalyst shows excellent application potential.

The application relates to the technical field of supported bimetallic catalyst preparation, in particular to an atomic-level dispersed Pt-Ga bimetallic catalyst and a preparation method and application thereof. The preparation method of the atomic-level dispersed Pt-Ga bimetallic catalyst comprises the following steps: mixing nano-alumina and a gallium nitrate ethanol solution, water-bath heating and stirring, and then evaporating the solvent; calcining the obtained precursor material, and then performing reduction oxidation treatment to obtain Ga / Al2O3; adding Ga / Al2O3 powder into a platinum acetylacetone ethanol solution, water-bath heating and stirring, and then evaporating the solvent; and calcining the obtained precursor material to obtain the atomic-level dispersed Pt-Ga bimetallic catalyst. The preparation method of the atomic-level dispersed Pt-Ga bimetallic catalyst provided by the application disperses the metal of the prepared catalyst at an atomic level, the atomic utilization rate is high, and the synergistic effect between the bimetals is greatly enhanced.

The invention belongs to the field of semiconductor materials, and discloses gallium oxide and a synthesis method thereof. The synthesis method comprises the following steps: introducing ammonia water into a gallium nitrate solution, and continuously stirring to obtain a white turbid liquid; aging the white turbid liquid, filtering and washing to obtain an intermediate product; and calcining the intermediate product to obtain solid particles which are gallium oxide. According to the synthesis method, gallium nitrate and ammonia water are used as core raw materials, additional additives and complex precursors are not needed, the impurity introduction risk can be greatly reduced, and the high purity of the product can be guaranteed by combining washing and calcining procedures; meanwhile, the process steps are simple, the operation conditions are mild and controllable, expensive special equipment is not needed, the production cost is low, the method is suitable for large-scale production, and a gallium oxide product with good dispersity and high crystallinity can be obtained after a precursor prepared through a precipitation method is calcined and crushed.

The present invention provides a Si-Ga nanomaterial catalyst and its preparation method and application, which belongs to the field of catalyst technology, comprising the following steps: stirring after mixing a tetraethyl orthosilicate solution with a structure directing agent (DMF), subsequently adding a gallium nitrate solution and continuing to stir, then continuing to add a rare earth compound solution and an ethylene glycol solution and continuing to stir the reaction, calcining after freeze-drying, and obtaining the Si-Ga nanomaterial catalyst. The present invention also discloses the Si-Ga nanomaterial catalyst prepared by the above-mentioned preparation method and its application in the catalytic synthesis of tert-dodecyl mercaptan. The catalyst provided by the present invention can make the reaction react in a wider reaction temperature (60°C to 200°C) window and under low pressure, and the tert-dodecyl mercaptan yield is greater than 85%, and the stability is not less than 800h, which is suitable for industrial production.

The invention discloses a transparent ceramic target material for heat dissipation of a vehicle-mounted OLED (Organic Light Emitting Diode) and a preparation method of the transparent ceramic target material, and belongs to the technical field of ceramic target materials. The preparation method comprises the following steps: firstly, enabling aluminum powder to generate AIN nano powder under the action of nitrogen, then dispersing the AIN nano powder into a solvent, sequentially adding gallium nitrate, zinc nitrate and acetylacetone, and treating after reaction to obtain AlN-coated GZO nano powder; gallium nitrate and zinc nitrate are dispersed in a solvent, a complexing agent and magnesium nitrate hexahydrate are added for dispersion, polyethylene glycol is added for a reaction, GZO-MgO composite sol is obtained, AlN-coated GZO nanopowder and the GZO-MgO composite sol are mixed, yttrium nitrate, tin tetrachloride, a binder and an ammonium polyacrylate aqueous solution are added, the mixture is stirred uniformly, and the GZO-MgO nanopowder is obtained. After the pH value is adjusted, ball milling, degassing treatment and sintering are conducted, and the transparent ceramic target material for vehicle-mounted OLED heat dissipation is obtained. The ceramic target material provided by the invention has the characteristics of high light transmittance, high electric conductivity and high heat conductivity, and can effectively prolong the service life of an OLED device.

The application belongs to the technical field of biomedical materials, and particularly relates to a long-acting antibacterial biomass orthopedic material and a preparation method thereof. The raw materials of the application comprise calcium nitrate tetrahydrate, ammonium dihydrogen phosphate, gallium nitrate, zinc nitrate hexahydrate, an antibiotic, 2-methylimidazole, sulfobetaine methacrylate and a photoinitiator. The application constructs a three-level synergistic structure through Ga-doped beta-tricalcium phosphate core / pH-responsive ZIF-8@antibiotic shell / photocured sulfobetaine (pSBMA) brush layer. The process adopts three continuous steps of aqueous coprecipitation, room temperature self-assembly and room temperature photocuring, avoids high-energy physical deposition or a complex surface activation process, and guarantees the compatibility and repeatability between layers. The final obtained biomass material realizes the triple functions of anti-adhesion barrier, drug burst release and long-term ion antibacterial on the micro level, and maintains biocompatibility on the macro level.

The invention provides a method for preparing hydroxyl gallium oxide in a short process, and belongs to the field of nonferrous metallurgy. The method comprises the following steps: dissolving gallium nitrate in deionized water to obtain a gallium nitrate solution with set concentration; placing the gallium nitrate solution under a high-power gravity field so that gallium nitrate in the gallium nitrate solution and deionized water are subjected to a conversion reaction to obtain a mixed solution containing hydroxyl gallium oxide; and carrying out solid-liquid separation and drying on the mixed solution to obtain the hydroxyl gallium oxide powder. Under the action of a high-power gravity field, the gallium nitrate aqueous solution is highly dispersed, highly turbulent, strongly mixed and rapidly updated in interface, and the reaction between gallium ions and water molecules is directly in an activated state, so that the reaction rate is promoted to be increased, and rapid and efficient conversion of hydroxyl gallium oxide is realized; meanwhile, water molecules are subjected to intense mutual collision and strong friction to generate a large amount of heat, so that the temperature of the system is quickly increased, and the heat intensity of the reaction is high, thereby improving the production efficiency of the hydroxyl gallium oxide.

The invention discloses a boric acid-based photosensitive molecule and a preparation method and application of a gallium ion compound of the boric acid-based photosensitive molecule, and belongs to the technical field of photodynamic antibiosis. The invention provides preparation and application of a compound TPB-Ga formed by TPB and gallium ions as an antibacterial agent, a compound with a structure as shown in a formula TTCPy, 4-(bromomethyl) phenylboronic acid and an organic solvent are mixed, the mixture is heated under a protective atmosphere for a reaction, the mixture is rapidly stirred into a gallium nitrate aqueous solution and ultrapure water mixture, TPB-Ga compound nanoparticles are obtained, and the TPB-Ga compound nanoparticles are used as the antibacterial agent. The method comprises the following steps: dissolving TPB-Ga in ultrapure water to obtain a TPB-Ga compound solution, preserving at 4 DEG C for later use, and finding that the compound has efficient reactive oxygen species (ROS) generation capability, good photodynamic sterilization effect and good biocompatibility through the antibacterial rate and the cell survival rate.

This invention belongs to the field of photocatalytic materials technology, specifically relating to a zinc gallate / semi-metallic carbon nitride heterojunction photocatalyst, its preparation method, and its application. The mass ratio of zinc gallate to semi-metallic carbon nitride heterojunction photocatalyst is 1:2 to 2:1. The preparation method includes: dissolving zinc acetate and gallium nitrate hydrate in deionized water, then adding citric acid monohydrate, and obtaining zinc gallate using a sol-gel method; dissolving sodium tricyanamide and 1-butyl-3-methylimidazolium chloride in water, and obtaining semi-metallic carbon nitride using a thermal polymerization method; and dissolving zinc gallate and semi-metallic carbon nitride in a deionized aqueous solution, and obtaining the zinc gallate / semi-metallic carbon nitride heterojunction photocatalyst using a hydrothermal method. The formation of the heterojunction can significantly improve the photocatalytic reduction activity of carbon dioxide by zinc gallate / semi-metallic carbon nitride.

The application provides a boron and metal double-doped modified ruthenium oxide anode catalyst, a preparation method and application thereof, and belongs to the technical field of new energy materials and electrochemical catalysis. First, urea and glucose are dissolved in deionized water as a structure directing agent, and then boric acid, ruthenium chloride and hydrated gallium nitrate are added; the mixture is stirred at room temperature until dissolved; a gel solid precursor is obtained by using a hydrothermal method; after washing treatment and vacuum drying, the precursor is subjected to heat treatment in an atmosphere to obtain a boron and metal double-doped ruthenium oxide electrocatalyst. The synthesis process is simple and easy to implement; the boron and metal doping modification not only reduces the loading amount of the noble metal ruthenium, but also improves the activity and stability of the catalyst, thereby providing a good idea for double-element doped ruthenium oxide and having industrial application potential.

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.

This invention discloses a method for preparing a reverse water-gas shift catalyst and its application, comprising the following steps: (1) dissolving tetrabutyl titanate, cerium nitrate, or gallium nitrate in water with ammonium molybdate, stirring until homogeneous, to prepare a mixed solution; (2) adding an organic acid to the mixed solution, stirring until homogeneous, and adjusting the pH of the solution; (3) heating the solution from step (2) until gelled, drying overnight, and then calcining to obtain the catalyst. This invention is the first to prepare a molybdenum-based bimetallic catalyst using the sol-gel method, which has the advantages of simple preparation steps, readily available raw materials, and safe operation. Furthermore, the catalyst obtained by this invention exhibits excellent CO2 conversion rate and nearly 100% CO selectivity.

The invention discloses a pyrazole aldehyde Schiff base gallium (III) complex with antitumor activity and a synthesis method and application thereof, and belongs to the technical field of medicinal chemistry and coordination chemistry. The method comprises the following steps: (1) reacting pyrazole aldehyde with amino acid in a methanol solution to generate a pyrazole aldehyde amino acid Schiff base ligand; and (2) reacting the synthesized pyrazole aldehyde amino acid Schiff base ligand with gallium salt (such as gallium chloride or gallium nitrate) in a methanol solution to generate the target gallium (III) complex. And (3) testing the antitumor activity of the synthesized gallium (III) complex. The method disclosed by the invention is simple and convenient to operate and high in yield, the obtained complex is stable in structure, the MTS method test proves that the complex has remarkable inhibitory activity on various tumor cells (such as human hepatoma carcinoma cell HepG2 and colon cancer SW480), and the IC50 value is mu M level. The invention provides important theoretical basis and experimental basis for developing novel antitumor drugs.

The application belongs to the technical field of medical material preparation, and particularly relates to a composite material based on photodynamic therapy of periodontitis and a preparation method and application thereof. The method disperses sodium dodecyl benzene sulfonate, tin chloride pentahydrate and L-cysteine in a mixed solution of water and ethylene glycol, uniformly stirs, and obtains nanosheets through hydrothermal reaction; then the nanosheets are mixed with mercapto-polyethylene glycol through ultrasonic, to obtain tin disulfide nanosheets; a germanium oxide solution, a chromium nitrate nonahydrate solution, zinc nitrate hexahydrate, hydrated gallium nitrate and water are mixed, stirred in the dark, ammonia water is added and uniformly stirred, and then hydrothermal reaction is carried out, to obtain long-light-emitting nanoparticles; finally, the tin disulfide nanosheets and the long-light-emitting nanoparticles are dissolved in water, stirred in the dark, a methylene blue solution is added and continuously stirred in the dark, and the composite material based on photodynamic therapy of periodontitis is obtained. The composite material based on photodynamic therapy of periodontitis prepared by the method can effectively improve the curative effect of photodynamic therapy in the treatment of periodontitis.

The invention relates to the technical field of preparation of supported bimetallic catalysts, in particular to an atomic-scale dispersed Pt-Ga bimetallic catalyst as well as a preparation method and application thereof. The preparation method of the atomic-scale dispersed Pt-Ga bimetallic catalyst comprises the following steps: mixing nano aluminum oxide with a gallium nitrate ethanol solution, heating in a water bath, stirring, and evaporating a solvent to dryness; calcining the obtained precursor material, and then carrying out reduction oxidation treatment to obtain Ga / Al2O3; ga / Al2O3 powder is added into a platinum acetylacetonate ethanol solution, and after water bath heating and stirring, a solvent is evaporated to dryness; and calcining the obtained precursor material to obtain the atomic-scale dispersed Pt-Ga bimetallic catalyst. According to the preparation method of the atomic-scale dispersed Pt-Ga bimetallic catalyst provided by the invention, the metal of the prepared catalyst is dispersed in an atomic scale, the atom utilization rate is high, and the synergistic effect between the two metals is greatly enhanced.

The invention belongs to the technical field of voltage-sensitive ceramic material preparation, and particularly relates to multi-element doped ZnO voltage-sensitive ceramic as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) mixing a gallium source, a nickel source, a zirconium source, aluminum nitrate and a solvent, and adjusting the pH value to 7-8 to obtain a mixed solution; the gallium source comprises gallium nitrate and / or gallium acetate; the nickel source comprises nickel nitrate and / or nickel acetate; the zirconium source comprises zirconium nitrate and / or zirconium acetate; the molar ratio of the gallium source to the nickel source to the zirconium source is (0.2-1.5): (0.5-1.8): (0.2-1); and (2) mixing the mixed solution with the remaining raw materials to obtain a mixture, granulating and forming to obtain a green body, and sintering. The gallium source, the nickel source and the zirconium source are used as raw materials in the form of salt at the same time, the prepared ZnO voltage-sensitive ceramic has large discharge-current capacity, high voltage gradient, low leakage current and low residual voltage ratio, the comprehensive performance meets the ionization protection requirement, for example, the ZnO voltage-sensitive ceramic is used for overvoltage protection of lightning protection insulators and ionization equipment.

The application discloses a kind of near-infrared long afterglow luminescent nano probes, its preparation method and application, belong to near-infrared long afterglow material field. With mesoporous silica as template, with zinc acetate, gallium nitrate, tin chloride, chromium acetate, chromium nitrate and yttrium nitrate as doped metal raw materials, long afterglow luminescent core is obtained by reaction and calcination;The outer layer of long afterglow luminescent core is coated with manganese dioxide, to obtain pre-product;Pre-product is surface modified, and coupling target molecule plerixafor, i.e. near-infrared long afterglow luminescent nano probe. The near-infrared long afterglow luminescent nano probe has good biological safety, can be effectively enriched in the tumor area in vivo after mouse tail vein injection, can realize high-sensitivity imaging of multiple small tumors in vivo under red light LED irradiation, and the imaging time is short, suitable for intraoperative imaging, can be used for the imaging of breast cancer tumor model to guide tumor resection.

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.

This invention discloses a one-dimensional, multi-component, hierarchical porous nanorod metal-organic framework (MOF) material and its preparation method, belonging to the technical field of MOF materials. The method includes: dissolving a coordination modifier and a surfactant in deionized water at a certain mass ratio, and ultrasonically mixing to form a clear solution; adding acetic acid and an organic solvent to the clear solution to form a mixed solution A; adding ferric nitrate nonahydrate, a nitrate selected from gallium nitrate or indium nitrate, and an organic ligand to mixed solution A to form a mixed solution B; stirring mixed solution B at 70-90°C, and after sufficient reaction, centrifuging, washing, and drying to obtain the one-dimensional, multi-component, hierarchical porous nanorod MOF material. This invention, by adjusting the ligands or solvent, can synthesize iron-based hierarchical porous materials with different crystal structures, overcoming the limitation of traditional MOF synthesis methods to single structures.

The application discloses a basic copper carbonate gallium composite oxide and a preparation method and application thereof, and relates to a method for preparing a basic copper carbonate gallium composite oxide by hydrothermal reaction of a mixed solution containing copper nitrate, gallium nitrate and urea. The method has the advantages of simple preparation process, good repeatability and convenience for batch synthesis of the composite oxide catalyst, and the catalyst has an ultra-wide stable potential range, the stable potential range is wide to-0.6~‑1.8V, and the CO / H2 ratio can be stably adjusted. The basic copper carbonate gallium composite oxide is prepared, CO2 is electrically reduced to prepare syngas, the syngas efficiency is above 90%, and the catalyst is expected to be widely applied in the field of electric catalysis.

The present invention relates to a one-step method for preparing gallium nitrate and flaky silver powder, belonging to the field of materials technology. The method comprises adding ultrasonically and surface-treated Ga to an AgNO3 solution according to a molar ratio, reacting at a preset temperature for 12 to 36 hours to obtain a suspension of Ga(NO3)3 and Ag; centrifuging to obtain liquid Ga(NO3)3 and solid Ag; evaporating and concentrating the Ga(NO3)3 solution at a preset temperature and vacuum drying to obtain solid Ga(NO3)3; and vacuum drying the solid Ag to obtain flaky silver powder. The method utilizes the reducing property of metallic Ga towards Ag, reacting Ga with the AgNO3 solution to directly obtain Ga(NO3)3 and flaky Ag. The method has the advantages of simple steps, short time, low energy consumption, no pollution, and high efficiency. The resulting gallium nitrate product has a high purity of up to 99.9%, and the resulting flaky silver powder has an average particle size of 5 to 10 μm.

This invention discloses a method for preparing Ga / Se dual-ion co-modified attapulgite and a corrosion-inhibiting multifunctional silk fibroin-based hydrogel coating. The preparation process is as follows: Attapulgite is activated and surface-modified with a hydrochloric acid solution of a certain concentration; gallium nitrate solution is added and the temperature is controlled; the reaction is carried out for a period of time to obtain Ga / Se dual-ion modified attapulgite; then, it is added to a silk fibroin aqueous solution of a certain mass fraction; subsequently, (1-hydroxyethylidene) bisphosphonic acid and glycine are added, mixed evenly, and coated onto a pretreated substrate, then dried at 37°C to form a film. Compared with the prior art, the hydrogel coating prepared by this invention has good corrosion inhibition, antibacterial, and osteogenic properties, and can be widely used in the surface protection of biomedical magnesium alloys and to impart multifunctionality to them.