43 results about "Alkali metal halide" patented technology

The invention discloses an inorganic halide luminescent material as well as a preparation method and application thereof. The chemical general formula of the material is CsI: xMn < 2 + >, yPb < 2 + >, 0 lt; x is less than or equal to 0.3, 0lt; and y < = 0.02. The material takes alkali metal halide CsI as a matrix, a [Mn2I10] 6-dimer luminescence center with a zero-dimensional electronic structure is formed by doping Mn < 2 + > at a high concentration, and Pb < 2 + > with an ns2 electronic structure is introduced to induce a Jahn-Teller effect, so that the formation of self-confinement excitons (STE) is enhanced; the material can be effectively excited by the band from ultraviolet to blue light, and emits broadband near-infrared light with the peak value larger than 1000 nm and the half-peak width larger than 150 nm. The preparation method adopts a solvothermal method, and a high-quality microcrystal or single crystal material is obtained by regulating and controlling parameters such as precursor ratio, doping concentration and reaction temperature. The material breaks through the limitation of traditional near-infrared first-area luminescence, has the characteristics of environmental friendliness and good biocompatibility, can be widely applied to the fields of night vision imaging, biomedical nondestructive testing, optical communication, near-infrared LEDs and the like, and has important scientific value and wide application prospect.

The invention relates to a carbon dioxide photo-thermal catalytic conversion catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: mixing a titanium source, an alkali metal halide, a copper source and a manganese source, and calcining in an inert atmosphere to obtain the carbon dioxide photo-thermal catalytic conversion catalyst. The copper source and the manganese source are jointly loaded on the titanium-based carrier, the synergistic effect of the copper source and the manganese source is achieved, and the photo-thermal catalytic conversion effect of carbon dioxide is improved. According to the invention, the titanium source, the copper source and the manganese source can be uniformly mixed in a calcining state by exerting the solvent medium effect of the alkali metal halide without assistance of a solvent for assisting dissolution. The preparation method is simple in process, raw materials are easy to obtain, and the prepared catalyst is simple in composition, high in methane selectivity, good in economic benefit and easy to popularize and use on a large scale when being used for the photo-thermal catalytic conversion process of carbon dioxide.

The invention discloses a method for preparing a supported metal catalyst-assisted few-walled carbon nanotube. The supported metal catalyst-assisted few-walled carbon nanotube comprises a catalytic active metal, an alkali metal halide eutectic salt and a porous metal oxide carrier. The method comprises the following steps: loading the ternary composite catalyst on a conductive substrate to prepare a working electrode; and at the reaction temperature, introducing gas containing a carbon source into the reactor, and simultaneously applying direct-current voltage or current to the working electrode to carry out chemical vapor deposition reaction. According to the invention, a molten liquid phase formed by eutectic salt at a high temperature is used as an ionic conductor, a high-temperature solid-liquid-gas three-phase electrochemical reaction interface is constructed, and in-situ electrochemical regulation of active sites of the catalyst is realized. According to the method, the intrinsic activity and the thermal stability of the catalyst are improved through the electrochemical polarization effect, meanwhile, the structural selectivity of the product carbon nano tube can be effectively regulated and controlled, and a new way is provided for oriented synthesis of the high-quality few-walled carbon nano tube.

The invention discloses an oligonucleotide purification method which comprises the following steps: loading an oligonucleotide crude product onto an anion exchange column, balancing by using a buffer solution, and then carrying out gradient elution on target oligonucleotide with a hydroxyl protecting group by using a mixture of the buffer solution and a buffer solution containing alkali metal halide, collecting elution fractions containing target oligonucleotides, carrying out ultrafiltration desalination, loading the elution fractions onto the anion exchange column again, balancing the elution fractions with a buffer solution, washing the anion exchange column with an acidic aqueous solution to remove hydroxyl protecting groups of the oligonucleotides, balancing the elution fractions with the buffer solution, and collecting the target oligonucleotides. And carrying out gradient elution on the target oligonucleotide with the hydroxyl protecting group removed by using a buffer solution and a buffer solution containing alkali metal halide. The oligonucleotide obtained by the purification method is high in purity, low in cost and suitable for large-scale production.

The application provides a two-dimensional Cr2C and a preparation method thereof, wherein the preparation method comprises the following steps: step S1, providing a Cr2(AlLi)C solid solution; and step S2, de-alloying AlLi in the Cr2(AlLi)C solid solution to generate the two-dimensional Cr2C. According to the preparation method of the application, the reaction reagents can be selected from water, an aqueous alkali metal halide solution, methanol or a methanol aqueous solution and the like, which are clean and environmentally friendly, and the preparation method has the characteristics of environmental protection, economy and high efficiency, and is different from the acid etching method which is seriously polluted and high in cost. In addition, by using different etching solutions, the types of functional groups of the two-dimensional Cr2C can be selected. In addition, the two-dimensional Cr2C prepared by the preparation method of the embodiment of the application has a smaller thickness, oligolayer Cr2C enes can be obtained, and two-dimensional Cr2C with an accordion shape can also be obtained.

This disclosure proposes a method and application for constructing hierarchical porous carbon materials using low-melting-point eutectic salts in conjunction with bio-templates. The method includes selecting lignocellulosic biomass raw materials with vascular or pore structures, crushing, washing, and drying to obtain biomass powder; mixing at least two alkali metal halides in a eutectic ratio and grinding to obtain a low-melting-point eutectic salt mixture; physically mixing or liquid-phase impregnation mixing the biomass powder and the eutectic salt mixture, followed by drying to obtain a composite precursor; pyrolyzing the composite precursor in a high-temperature reactor under an inert atmosphere to obtain a reaction product; after cooling the reaction product to room temperature, washing it in deionized water to dissolve and separate the inorganic salts; evaporating and crystallizing the washing liquid to obtain a solid product; soaking the washed solid product in dilute acid, washing it with water until neutral, drying, and sieving to obtain the hierarchical porous carbon material.

The invention discloses a composite material and a preparation method thereof, a thin film, a photoelectric device and a display device, the composite material comprises metal oxide nanoparticles and a shell layer coating the surfaces of the metal oxide nanoparticles, and the material of the shell layer comprises alkali metal halide. According to the composite material provided by the technical scheme of the invention, the surfaces of the metal oxide nanoparticles are coated with the alkali metal halide, so that the stability of the metal oxide nanoparticles in the electrifying process is improved, and the electrochemical change is reduced.

The application provides a mass production method for an intermediate valence state vanadium oxide electronic phase change powder and single crystal, belongs to the field of heat-sensitive electronic phase change materials, and particularly relates to a method for realizing mass production of high-purity and high-uniformity polycrystalline or single crystal materials in a precisely controlled atmosphere by using an additive with the dual effects of fluxing agent and heterogeneous seed crystal, fully dissolving a precursor required for synthesizing the system material by means of a molten alkali halide fluxing agent, and fully reacting the precursor in the process, so as to greatly reduce the reaction temperature and reaction time required for material synthesis, realize mass production of the materials in the precisely controlled atmosphere, and continuously regulate the metal insulator transition temperature of the materials in a wide range by further regulating the valence of vanadium in the intermediate valence state vanadium oxide, the type of doped elements and the doping ratio, so that the method has certain application prospects in the fields of strong light protection, infrared camouflage, thermochromism and sudden change type thermistor devices.

The present invention provides a solid electrolyte, a method for preparing the same, its use, and an electrochemical device. The preparation method includes performing ion exchange of molecular sieve-Na in an acidic solution so that the cations in the pores of molecular sieve-Na are exchanged with protons, forming molecular sieve-H by evaporating water molecules after washing and drying, forming OH by bonding oxygen and protons in the aluminum-oxygen tetrahedron of molecular sieve-H, obtaining molecular sieve-X1 by exchanging OH in molecular sieve-H with halogen X1 (X1 = F, Cl, Br, I) through a halogenation reaction, and firing molecular sieve-X1 and molten AX2 to obtain a solid electrolyte. The pH of the acidic solution is 1.2 < pH < 2.1. AX2 includes an alkali metal halide and / or an alkali metal chalcogenide. The firing temperature is 300 to 500 °C. The solid electrolyte has high ionic conductivity and can be used alone as a solid electrolyte.

The invention provides an alkali metal halide gradient doped perovskite light absorption layer and a full-vacuum preparation method and application thereof, and belongs to the technical field of perovskite materials. The technical concept of gradient doping-step deposition-synergistic passivation is provided, a vacuum evaporation mode is adopted, and the multi-dimensional contradiction between materials and the technology is overcome by combining alkali metal gradient doping and halogen / pseudo-halogen synergistic passivation; an inorganic framework deposition-organic phase vapor infiltration two-step method is adopted in the process level, temperature conflicts are avoided, and the density of the thin film is improved; rb < + > gradient doping is introduced in material design to form a built-in electric field to inhibit Br <-> migration, and meanwhile, a [K-F] < + + > coordination network and Lewis acid-base passivation sites are constructed through K < + > / F- / SCN <-> co-doping, so that the defect density is reduced.

The invention relates to the technical field of cocatalyst preparation, and particularly provides alkylaluminoxane and a preparation method thereof. The preparation method of the alkylaluminoxane comprises the following steps: mixing metal salt containing crystal water with anhydrous alkali metal halide, grinding to form mixed crystals, and under the protection of inert atmosphere and inert solution, enabling the mixed crystals to be in contact and react with alkylaluminoxane to obtain the alkylaluminoxane. The alkylaluminoxane and the preparation method provided by the invention are used for realizing synthesis of alkylaluminoxane with high yield, high safety and high storage stability.

The application relates to a flux synthesis method of doped niobium dioxide sensitive resistance material, belonging to the field of thermosensitive electronic phase change. Specifically, the application relates to a method for reducing reaction temperature by using a flux, and the doped niobium dioxide electronic phase change material is batch-synthesized through high and low valence state niobium precursor batching and flux reaction in an inert or vacuum atmosphere to prepare powder, ceramic or thin film material. The application provides a non-uniform nucleation condition for new phase growth by introducing an alkali metal halide flux with similar lattice parameters of the synthesized material, reduces the free energy of the nucleation and growth of the new phase, greatly reduces the required reaction temperature and reaction time of the material synthesis, and can realize the batch preparation of high-purity and high-uniformity material in a controllable atmosphere. The reaction speed is fast, energy consumption is reduced, and the prepared doped niobium dioxide electronic phase change material has a chemical formula of Nb 1‑x M x O2: M is a rare earth element or a transition group metal element, and has considerable application value in the fields of high-temperature thermosensitive resistance, critical temperature coefficient thermosensitive resistance, nonvolatile storage, sensors and the like.

The application discloses a purification method of oligonucleotide, which comprises the following steps: loading the crude oligonucleotide into an anion exchange column which is equilibrated with a phosphate buffer solution, washing the anion exchange column with the mixture of the phosphate buffer solution and the phosphate buffer solution containing alkali metal halide after equilibrating the anion exchange column with the phosphate buffer solution, equilibrating the anion exchange column with the phosphate buffer solution again, then washing the anion exchange column with an acidic aqueous solution to remove the hydroxyl protecting group of the terminal nucleoside of the oligonucleotide, and equilibrating the anion exchange column with the phosphate buffer solution, finally eluting the target oligonucleotide with the phosphate buffer solution containing alkali metal halide, and collecting the eluent containing the target oligonucleotide. The purification method of the application can efficiently and stably obtain high-purity oligonucleotide without using organic solvents, and is suitable for the purification of oligonucleotide in large-scale commercial process.

The invention discloses a sulfide solid electrolyte, a preparation method and an all-solid-state lithium ion battery, and belongs to the field of lithium ion batteries. The general chemical formula of the sulfide solid electrolyte is xAB-RySz, AB is alkali metal halide, A is one of Li, Na and K, B is one of F, Cl, Br and I, RySz is metal sulfide, R is one or more of Ca, Sr, Ba, Mn, Fe, Pb, Ge, Cr, As, Sb, V, Ga, Sn, Bi, In, Gd, Cu, Zn and Cu, and x is more than or equal to 0.3 and less than or equal to 0.7; according to the invention, RySz is ZnIn2S4. The sulfide solid electrolyte disclosed by the invention has high room-temperature ionic conductivity and good air stability, can realize assembly of a solid-state battery in air, and meanwhile, the working pressure required by the battery is relatively small, so that preparation of a low-pressure even pressure-free all-solid-state battery is expected to be realized.

The invention discloses a composite catalyst, N, N, N-trimethyl-1-adamantyl ammonium hydroxide as well as a preparation method and application thereof, and belongs to the technical field of chemical synthesis. The composite catalyst comprises the following components in percentage by mole: 50%-75% of an active component and 25%-50% of an auxiliary agent, the active component is alkali metal halide or alkaline earth metal halide; the auxiliary agent is metal sulfate. The invention also provides application of the composite catalyst in synthesis of N, N, N-trimethyl-1-adamantyl quaternary ammonium salt by taking 1-amantadine and dimethyl carbonate as raw materials. A novel composite catalytic system is adopted, 1-amantadine, dimethyl carbonate and calcium oxide serve as raw materials to prepare N, N, N-trimethyl-1-adamantyl ammonium hydroxide, and the N, N, N-trimethyl-1-adamantyl ammonium hydroxide is used for solving the problems that an existing production technology of N, N, N-trimethyl-1-adamantyl ammonium hydroxide needs two-step methylation, the technological process is complex, an ion exchange or electrolysis technology needs to be used for separation and purification, and the production cost is low. The treatment cost is high.

A process for the cracking of a carbon-containing feedstock to produce olefins, aromatics and / or aliphatic includes contacting, in a reactor system, the carbon-containing feedstock with oxygen gas in the presence of a molten salt matrix consisting of a eutectic mixture of alkali metal carbonates, alkali metal hydroxides, alkali metal nitrates, alkali metal halides, alkaline earth metal carbonates, alkaline earth metal hydroxides, alkali earth nitrates, alkaline earth metal halides, rare earth metal carbonates, transition metal carbonates, transition metal hydroxides, transition metal nitrates, transition metal halides, or a mixture of any two or more thereof, to generate an olefin-containing product stream; and collecting an olefin from the olefin-containing product stream; wherein the oxygen is fed with the carbon-containing feedstock in a gas stream comprising from greater than 0 wt % to about 21 wt % oxygen in an inert gas; and the process is conducted in the absence of a catalyst

The object of the present invention is to provide an antistatic agent that imparts excellent antistatic properties to thermoplastic resins. [Solution] An antistatic agent (Z) comprising a block polymer (A) having blocks of hydrophobic polymer (a) and blocks of hydrophilic polymer (b) as constituent units, an alkyl (alkyl with 6 to 18 carbon atoms) benzenesulfonate (S1), and at least one salt (S2) selected from the group consisting of alkali metal halides and alkali metal halides.

The invention provides a novel oxysulfide and a light absorption property regulation and control method thereof, the chemical formula of the novel oxysulfide is SrGaSbO3S, the novel oxysulfide belongs to an orthorhombic system Pnma, has a two-dimensional layered structure, and is formed by alternately stacking [GaSbO3S] < 2-> and interlayer Sr < 2 + > ions. The material is placed in molten alkali metal halide for annealing treatment, and an amorphous layer is formed on the surface due to ion topology corrosion, so that the optical band gap of the material is obviously narrowed and is reduced to 1.69 eV from 2.11 eV, and the color is changed into orange from light yellow. The oxysulfide and the band gap regulation and control method thereof have important significance in application in the fields of photocatalysis, photoelectric conversion and the like.

The application discloses alkali metal doped perovskite single crystal material and a preparation method and application thereof. A high-concentration alkali metal halide is introduced into a perovskite aqueous phase precursor, and an alkali metal doped perovskite single crystal is precipitated through a cooling method. The traditional cesium lead bromide perovskite light emitting wavelength band is near 520 nm, and wide spectrum emission cannot be realized. The scheme can prepare a centimeter level perovskite CsPb2Br5 single crystal with wide spectrum emission. Test results show that the alkali metal doped perovskite CsPb2Br5 single crystal fluorescence spectrum covers a visible light and near infrared light wavelength band (500-1000 nm).

The invention relates to the technical field of organic synthesis, in particular to a preparation method of p-phenylenediamine, which comprises the following steps: S1, adding a solvent and organic alkali into a reactor, controlling the temperature in a system, adding alkali metal halide, uniformly dispersing, dropwise adding benzoyl chloride into the system, and controlling the temperature of the system for reaction; and S2, adding terephthalamide into the reaction system in the step S1, controlling the temperature of the system for reaction, and after the reaction is finished, performing post-treatment and purification to obtain the p-phenylenediamine. According to the preparation method of p-phenylenediamine, N-halogenated benzamide is generated in situ in a reaction system by adding acyl chloride and alkali metal halide, and acyl chloride by-products can be recycled after the reaction is finished. The high-activity halogen source is generated in situ in a reaction system, the reaction activity of the halogen source can be accurately controlled, and the side reaction of product oxidation caused by excessive halogen sources is avoided. Therefore, the target product p-phenylenediamine with high yield and high purity is obtained.

The application discloses a method for preparing a high-efficiency and stable CsPbI3 inorganic perovskite solar cell in an atmospheric environment, and comprises the following steps: using low-temperature SnO2 modified by an alkali metal halide salt as an electron transport layer, dropping a perovskite precursor solution containing a certain amount of benzylamine salt additive on the electron transport layer through a spin coating technology, adopting a two-step annealing method, adjusting the concentration of the additive, and realizing the preparation of a dense and uniform CsPbI3 thin film in a full-air environment, then spin-coating Spiro-OMeTAD as a hole transport layer and vacuum evaporation of an Ag electrode to obtain the preparation of the high-efficiency and stable CsPbI3 inorganic perovskite solar cell. The application realizes the low-energy-consumption preparation of the dense and uniform CsPbI3 inorganic perovskite solar cell under low environmental requirements, and has an excellent photoelectric conversion efficiency of 17.24%.

This invention discloses a method for preparing low-oxygen, high-specific-capacitance tantalum powder for tantalum capacitors, addressing the problems commonly found in existing magnesothermic reduction methods for tantalum powder preparation, such as high oxygen content, difficulty in suppressing the byproduct magnesium tantalate, and poor powder particle uniformity leading to low specific capacitance, high leakage current, and poor electrical performance. This method involves uniformly coating a completely removable soluble additive onto the surface of porous spherical tantalum oxide particles. After drying, these particles are mixed with alkali metal halides and a single-phase addition of metallic magnesium powder. A gradient-temperature reduction process is employed: in the intermediate temperature stage, the additive decomposes to construct a porous framework and initiates initial reduction; in the high-temperature stage, deep reduction is completed. A molten salt medium synergistically regulates the heat of reaction and mass transfer, completely suppressing the formation of magnesium tantalate. The product, after post-treatment, yields tantalum powder with an oxygen content ≤2500 ppm, a specific capacitance ≥110000 μFV / g, and a uniform coral-like porous structure. This method offers a clean and highly controllable process, resulting in high-purity tantalum powder with excellent electrical properties, making it suitable for high-end tantalum electrolytic capacitors.

A class of cathode materials and secondary ion batteries containing these materials are provided. These cathode materials at least include a cathode active substance comprising a first active substance and a carrier. The first active substance is selected from alkali metal halide or alkali metal sulfite, alkaline earth metal halide or alkaline earth metal sulfite, aluminum halide, zinc halide and zinc sulfite. The carrier has a low-dimensional structure and is selected from a template and / or a second active substance. The first active substance of the cathode material has a relatively low molecular weight and a relatively high redox potential, and thus the secondary ion batteries have a relatively high specific capacity and voltage.

The application discloses a composite metal oxide catalyst loaded with alkali metal halide and a preparation method and application of the catalyst in catalyzing glycerol, carbon dioxide and propylene oxide, and belongs to the technical field of catalysts.A mixed solution of nitrates and a sodium hydroxide solution are added into a sodium carbonate solution, the mixed solution is a mixed solution of magnesium nitrate, lanthanum nitrate and nickel nitrate, a suspension containing precipitates is obtained by heating, the precipitates are filtered, dried, ground and calcined to obtain a composite metal oxide, the composite metal oxide is impregnated in an aqueous solution of alkali metal halide, and then dried, ground and calcined to obtain the composite metal oxide catalyst loaded with alkali metal halide.The catalyst in the application is used for preparing glycerol carbonate by one-pot reaction of glycerol, carbon dioxide and propylene oxide, the glycerol conversion rate can reach 90%, the glycerol carbonate yield can also reach 90%, and the catalyst has the advantages of simple preparation, low cost, high activity, easy recovery, good stability, easy regeneration and the like.

This invention relates to a method for preparing difenoconazole, comprising the following steps: (1) hydrolyzing difenoconazole isomers to generate intermediate 1; (2) generating intermediate 2 from intermediate 1 under the action of a catalyst, wherein the catalyst is selected from one or more of alkali metal halides and halogen-containing organic compounds; (3) reacting intermediate 2 with 1,2-propanediol to generate difenoconazole, wherein the structural formula of difenoconazole isomer is [insert structural formula here], the structural formula of intermediate 1 is [insert structural formula here], and the structural formula of intermediate 2 is [insert structural formula here]. This method not only converts the original waste difenoconazole isomers into difenoconazole, realizing resource reuse, but also has simple steps and is suitable for industrial production.

The present invention provides an electrolytic cell suitable for electrolysing certain inorganic compounds of alkali and alkaline earth (Group 1 and Group 2) metals in their molten state. The cell (100) comprises a vessel (102) for containing a molten electrolyte, an anode (10) and a cathode (70) both inside the vessel (102), and a source (20) of a magnetic field having a gradient with a positive component in a direction (– x) from the anode (10) to the cathode (70), such that the strength of the magnetic field increases from the anode (10) to the cathode (70). The rest of the electrolytic cell (100), apart from the source of the magnetic field, including at least both the vessel (102) and the anode (10), consists of material having a magnetic susceptibility with an absolute value of less than 10-2. Thus the rest of the electrolytic cell, which is made of diamagnetic and / or paramagnetic material(s), does not affect the magnetic field between the anode (10) and the cathode (70) to any appreciable extent in comparison to the same magnetic field in free space. The source of the magnetic field between the anode (10) and the cathode (70) may either be a permanent magnet (20) located outside the vessel (102) adjacent to the cathode (70), or it may be provided by permanently magnetizing the cathode (70) itself. In the latter case, the cathode comprises an electrically conducting "hard" ferromagnetic material with a high Curie temperature. In the former case, the cathode instead consists of an electrically conducting material also having a magnetic susceptibility with an absolute value of less than 10-2, so as not to affect the magnetic field from the permanent magnet (20) located outside the vessel (102). In either case, if such a cell (100) is used to electrolyse a halide of an alkali metal, a halide of an alkaline earth metal except beryllium or a hydroxide of an alkali metal in their molten state, the magnetic field between the anode (10) and the cathode (70) inhibits a back-reaction between the electrolysis products formed at the anode (10) and cathode (70), thereby improving the energy efficiency of the cell. A plurality of such cells (100) may also be arranged with just one permanent magnet (20) as the source of the magnetic field between the anode (10) and cathode (70) inside the respective vessels (102) of two adjacent electrolytic cells (100), thereby halving the total number of magnetized components which are used. [Fig. 4A]

The application relates to a sulfide solid electrolyte, a preparation method and a full solid-state lithium ion battery, and belongs to the field of lithium ion batteries. The chemical general formula of the sulfide solid electrolyte is xAB-R y S z , wherein AB is an alkali metal halide, A is one of Li, Na and K, B is one of F, Cl, Br and I, R y S z is a metal sulfide, R is one or more of Ca, Sr, Ba, Mn, Fe, Pb, Ge, Cr, As, Sb, V, Ga, Sn, Bi, In, Gd, Cu, Zn and Cu, and 0.3<=x<=0.7; in the application, R y S z is ZnIn2S4. The sulfide solid electrolyte has high room-temperature ionic conductivity and good air stability, can realize the assembly of a solid-state battery in air, the required working pressure of the battery is smaller, and the preparation of a low-pressure or even pressure-free full solid-state battery can be realized.

The invention discloses an ammonia storage material, a preparation method thereof and an ammonia gas adsorption device, relates to the technical field of gas storage, and aims to solve the problem that the adsorption quantity attenuation of the ammonia storage material is fast after multiple adsorption-desorption cycles. The ammonia storage material comprises alkali metal halide and carbon nanotubes.

The application discloses a kind of multi-component ternary copper halide nanowires and its preparation method and application.The preparation method includes: the substrate material containing copper halide precursor is placed in alkali metal halide solution, and multi-component ternary copper halide nanowire is obtained by standing;Halogen element contained in copper halide precursor or alkali metal halide solution includes Cl, Br, I and the like, and alkali metal element includes Cs, Rb, K and the like.The application provides a kind of multi-component ternary copper halide nanowire using solution method, and the preparation method is simple and efficient, single-crystal nanowire is formed by self-limiting growth, with the characteristics of high crystallinity, the size of nanowire can be controlled by changing temperature and reaction time, by adding different cesium halide precursor mixture, adjust its halogen ratio to realize tunable luminescence, to meet the use demand of different scene semiconductor;Multi-component ternary copper halide nanowire prepared has a series of advantages such as high crystallinity, low defect density and high carrier mobility.

The invention discloses a method for preparing benzophenone aromatic hydrocarbon by directly oxidizing diphenylmethane aromatic hydrocarbon, which comprises the following steps: mixing a reaction substrate, a reaction solvent, a main catalyst and a cocatalyst to obtain a reaction raw material, introducing the reaction raw material into an oxidation reactor, heating to a reaction temperature under the protection of nitrogen and / or inert gas, and reacting for 1-2 hours to obtain the benzophenone aromatic hydrocarbon. Introducing oxygen-containing gas to carry out oxidation reaction to obtain benzophenone aromatic hydrocarbon; the main catalyst comprises a transition metal salt; the cocatalyst is one or more of alkali metal halide, alkaline earth metal halide and nonmetal oxyacid; and the oxidation reactor is a bubble tower oxidation reactor provided with a jet flow gas-liquid mixer. By optimizing the reactor and the catalytic system, the efficiency of the oxidation reaction process and the yield of the benzophenone aromatic hydrocarbon are remarkably improved, and the method has the universality of preparing the benzophenone aromatic hydrocarbon by oxidizing the diphenylmethane aromatic hydrocarbon.