38 results about "Gallium nitrate" patented technology

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 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.

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 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.

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.

This invention employs a co-precipitation method to prepare a copper-zinc-gallium catalyst. Specifically, copper nitrate trihydrate, zinc nitrate hexahydrate, and gallium nitrate hydrate are prepared into a metal salt solution, which is then added dropwise to a reaction vessel containing a base solution along with a precipitating alkaline solution. The co-precipitation reaction is carried out under heating, stirring, and pH control. The target catalyst is then obtained through aging, solid-liquid separation, and calcination. This invention overcomes the shortcomings of existing copper-zinc-based catalysts, such as low activity and easy sintering and deactivation, and improves the long-range stability of the catalyst.

The invention discloses a Ga-doped ZnO one-dimensional transparent conductive array and a preparation method and a conductivity regulation and control method thereof, and the method comprises the steps: employing a magnetron sputtering coating method, and preparing a ZnO film as a seed layer on a P-type silicon wafer substrate; zinc nitrate hexahydrate, hexamethylenetetramine and gallium nitrate hydrate are adopted to prepare an aqueous solution, the total molar concentration of the zinc nitrate hexahydrate and the gallium nitrate hydrate is 25 mmol / L, the molar concentration of the hexamethylenetetramine is 25 mmol / L, the two solutions are mixed to obtain a mixed solution, the pH value of the mixed solution is controlled to be 7-9, and the mixed solution serves as a hydrothermal solution; the hydrothermal solution is guided into a high-pressure reaction kettle container, the filling degree in the high-pressure reaction kettle container is controlled to be 70%-80%, a P-type silicon wafer substrate with a ZnO film is immersed in the hydrothermal solution with the film face facing downwards, and the Ga-doped ZnO one-dimensional transparent conductive array is obtained; by changing the Ga doping proportion, the conductivity of the Ga-doped ZnO one-dimensional transparent conductive array is regulated and controlled.

This invention provides a mussel-inspired biomimetic adhesive and its preparation method. The adhesive is made by uniformly mixing dopamine-modified hyaluronic acid, polydopamine, and gallium nitrate in a specific ratio. The adhesive prepared by this invention is simple to prepare, injectable, and convenient for practical applications. The adhesive prepared by this invention maintains excellent adhesion performance in humid environments and exhibits excellent adhesion performance in humid environments with a pH range of 1–10. This adhesive is non-cytotoxic, and its various properties can be adjusted according to application requirements. It can be applied not only to the bonding of various materials such as glass, metals and their oxides, plastics, and rubber, but also has broad application prospects in clinical medicine, including the bonding and repair of skin or tissue organs, sealing and hemostasis, cell encapsulation, and delivery of bioactive molecules.

The application discloses a kind of recycling methods of waste hydrogenation catalyst.The method comprises: waste hydrogenation catalyst is extracted, and the solid obtained is calcined to obtain material I;Material I, water-soluble polymer and ammonia are mixed and then hydrothermally treated, and the filtrate I and material II are obtained by filtration;The filtrate I and gallium nitrate solution are mixed and then impregnated on activated carbon, and dried;The dried activated carbon is formed with material II, pseudo-boehmite, adhesive, extrusion aid and water, and then calcined;Then, the impregnation solution is used to impregnate the calcined product, and then aged, dried and calcined to obtain a hydrogenation catalyst.The catalyst prepared by the method has high activity and long service life when applied to residue oil hydrogenation reaction.The method is particularly suitable for recycling and reusing nickel-molybdenum catalyst.

The invention discloses a PdGa / alpha-MoC bimetallic catalyst as well as a preparation method and application thereof. Respectively dissolving ammonium molybdate, gallium nitrate and palladium nitrate in water, mixing, drying and calcining to obtain a PdGa / MoO3 precursor, and further carbonizing and passivating to obtain the PdGa / alpha-MoC bimetallic catalyst. The prepared PdGa / alpha-MoC catalyst takes noble metal and transition metal as active components, and high dispersion of metal species is realized through high migration ability of molybdenum atoms on a carbide carrier. Wherein the doping of Ga enables the catalyst to have richer oxygen vacancies and acid sites, and the active sites significantly enhance the adsorption and conversion of reactants on the surface of the catalyst. The synergistic combination of bimetallic loading and oxygen vacancy regulation realizes efficient and selective hydrodeoxygenation of vanillin, keeps stable hydrodeoxygenation activity in the whole cycle test, and has good application prospects.

The application discloses a gallium metal organic framework material, which is prepared through the following steps: (1) dissolving 2-amino terephthalic acid and itaconic acid in an organic solvent to obtain solution A; (2) dissolving gallium nitrate hydrate in an organic solvent to obtain solution B containing gallium ions; and (3) mixing solution A and solution B, heating under the condition of 50-70 DEG C for 3-5 hours, centrifuging and collecting the precipitate, and purifying to obtain the gallium metal organic framework material. The gallium metal organic framework material is constructed by combining itaconic acid and 2-amino terephthalic acid as a double ligand and taking gallium ions as a metal node, so that the technical problems of short biological half-life and low cell uptake efficiency of free itaconic acid are solved, the itaconic acid and the gallium ions are coordinated to play an anti-inflammatory and antibacterial role, to remove planktonic bacteria, and to have strong antibiofilm activity, and the gallium metal organic framework material can be used for preparing a drug for treating pyogenic arthritis.

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.

The invention belongs to the technical field of medical material preparation, and particularly relates to a photodynamic-based composite material for treating periodontitis and a preparation method and application of the photodynamic-based composite material. The method comprises the following steps: dispersing sodium dodecyl benzene sulfonate, tin chloride pentahydrate and L-cysteine into a mixed solution of water and ethylene glycol, uniformly stirring, and carrying out hydrothermal reaction to obtain nanosheets; then mixing with sulfydryl-polyethylene glycol, and carrying out ultrasonic treatment to obtain tin disulfide nanosheets; the preparation method comprises the following steps: mixing a germanium oxide solution, a chromium nitrate nonahydrate solution, zinc nitrate hexahydrate, gallium nitrate hydrate and water, stirring in a dark place, adding ammonia water, continuously stirring uniformly, and carrying out a hydrothermal reaction to obtain long-luminescent nanoparticles; and finally, dissolving the tin disulfide nanosheets and the long luminous nanoparticles in water, stirring in a dark place, adding a methylene blue solution, and continuously stirring in a dark place, thereby obtaining the long luminous nano-particles. The composite material for treating periodontitis based on photodynamic therapy prepared by the invention can effectively improve the curative effect of the photodynamic therapy in periodontitis treatment.

The application discloses a method for preparing gallium-doped hollow ZSM-5 molecular sieves by microwave and application thereof, and relates to the technical field of molecular sieve catalyst preparation. A precursor is prepared by mixing a silicon source, a template agent and deionized water, stirring and transferring into a digestion tank, and then the precursor is subjected to microwave hydrothermal treatment and is placed in a muffle furnace for calcination to remove the template agent, so as to obtain a pure silicon molecular sieve; the pure silicon molecular sieve is taken, an aluminum source, a template agent and deionized water are added, ultrasonic treatment is performed, and then the mixture is transferred into the digestion tank, and then the mixture is subjected to microwave hydrothermal treatment and dissolution-recrystallization, so as to obtain a product which is placed in the muffle furnace for calcination to remove the template agent, so as to obtain a hollow ZSM-5 molecular sieve; the hollow ZSM-5 molecular sieve is taken, gallium nitrate and deionized water are added, ultrasonic treatment is performed, and then the mixture is transferred into the digestion tank, and then gallium doping is performed under microwave irradiation; and the dried product is placed in a tube furnace, and is kept at 200-300 DEG C under argon atmosphere, so as to obtain the gallium-doped hollow ZSM-5 molecular sieve. The microwave hydrothermal treatment and dissolution-recrystallization process are combined, so that the preparation time of the hollow ZSM-5 molecular sieve is effectively shortened, and the energy consumption is reduced.