62results about "Copper compounds" patented technology

The invention relates to a textured KCu7S4 thermoelectric material and a preparation method thereof, and the method comprises the steps: sequentially adding a prepared KOH aqueous solution, CuCl2. 2H2O and Na2S. 9H2O into a high-pressure kettle, and fully stirring for dissolving; dropwise adding an N2H4.H2O aqueous solution into the mixed solution, fully stirring, sealing, transferring to a microwave chemical synthesis instrument, heating, keeping stirring, and reacting at a target temperature and self-generated pressure to generate a KCu7S4 nanowire preferentially growing along a [001] crystal orientation; and after the reaction is finished and natural cooling is carried out, a product is collected through centrifugation, full cleaning and vacuum drying are carried out, and then the KCu7S4 thermoelectric material with [001] preferred orientation in the direction perpendicular to the pressure direction is obtained through spark plasma sintering. According to the method, a surfactant and an organic solvent are not used, and macro, rapid, efficient and controllable preparation of the KCu7S4 nanowire is realized through a low-temperature, low-cost and low-energy-consumption microwave-assisted hydrothermal process.

The invention relates to the technical field of etching waste liquid treatment, and provides a nickel-containing etching waste liquid treatment method which comprises the following steps: 1, neutralizing and extracting copper; step 2, nickel deposition; step 3, evaporative crystallization; wherein the step I specifically comprises the following steps: slowly adding sodium bicarbonate into the nickel-containing waste liquid, stirring to adjust the pH value of the waste liquid to weak acidity, preferentially forming a basic cupric carbonate Cu2 (OH) 2CO3 precipitate when Cu < 2 + > is within the pH value range, and stably remaining Ni < 2 + > in the solution, and carrying out operations such as filtering separation and the like; and the step 2 specifically comprises the treatment of adding sodium hydroxide into the nickel-containing filtrate from which most of copper is removed to adjust the pH value to be neutral and the like. According to the technical scheme, the problems that according to an existing nickel-containing etching waste liquid treatment method, the harmless treatment effect is achieved in a chemical precipitation mode, the main purpose is to stabilize solid nickel, although the emission requirement is met, the waste liquid still contains copper, soluble salt and other components, and huge resource waste is caused by direct emission are solved.

The invention relates to a lead-free perovskite composite material, a preparation method thereof and application of the lead-free perovskite composite material in a resistive random access memory, and belongs to the technical field of preparation of the resistive random access memory. The lead-free perovskite composite material comprises a doped Sb element, the chemical formula of the lead-free perovskite composite material is Cs3Cu2I5: Sb, the molar ratio of Sb to Cu is (0.1-1): 1, the perovskite Cs3Cu2I5 is doped and modified through the element Sb, the content of iodine vacancy (VI) in cesium-iodine-copper perovskite can be reduced, the stability of conductive filaments can be improved, and therefore the resistance change performance of the resistive random access memory is improved.

To provide a composite having excellent structural stability which comprises a middle layer (stabilization layer) that suppresses a problem such as chemical reaction and element diffusion, which could occur between two materials in the case where two portions including inorganic materials having constitutions different from each other bond, between the two materials, and a method for manufacturing the composite.SOLUTION: A structure 1 of the present invention comprises: a first material part 10 including a first inorganic material; a second material part 12 including a second inorganic material having a different constitution from the first inorganic material; and a stabilization layer 14 arranged between the first material part 10 and the second material part 12, where the stabilization layer 14 includes a compound expressed by M12M2O4 (in the formula, M1 and M2 are elements different from each other, M1 is at least one selected from Al, Fe and Ga, and M2 is at least one selected from Cu, Mg, Zn, Fe, Mn and Co ).SELECTED DRAWING: Figure 1

An electrode active material precursor, a preparation method thereof, an electrode active material, and a battery, the electrode active material precursor comprising carbon-complexed oxide particles, the oxide satisfying formula (1): M a O b (1) wherein M elements are selected from one or more of transition metal elements with a relative atomic mass less than 65, and can be selected from one or more of Ni, Co, Fe, Mn, Zn, Mg, Ca, Cu, Sn, Mo, Ru, Ir, V, Nb, Cr, a>0, b>0, and the powder resistivity of the carbon-complexed oxide particles is less than 100 Ω·cm.

In one embodiment, the present application discloses a compound that is a selective neuroactive agent for the treatment of diseases of the central nervous system (CNS). In one aspect, the neuroactive agent is a composition comprising polymorph SP. The present invention relates to Cu II -diacetyl-bis(N 4 -methyl-thiosemicarbazone)(diacetyl-bis(N 4 -Methyl-thiosemicarbazonato)-Cu II , Cu II (atsm), copper ATSM, and CuATSM, the latter term being used herein), as a pharmaceutical, particularly for the treatment of conditions that can be prevented, alleviated, or ameliorated by delivery of the metal.

Disclosed are a pure-phase polyanionic sulfate sodium ion battery positive electrode material and a preparation method therefor. The chemical general formula of the pure-phase polyanionic sulfate sodium ion battery positive electrode material is NaxMyAzSO4, wherein M is one or two or more of Mn, Fe, Co, Ni, Cu, and / or Zn, A is one or two or more of Li, K, and / or Na, and the value ranges of variables are: 0.75≤x≤0.85, 0.52≤y≤0.58, 0<z≤0.1, and x+2y+z=2. The pure-phase polyanionic sulfate sodium ion battery positive electrode material has the characteristics of good structural stability, excellent rate performance, good cycle performance, simple preparation method, and low cost.

The invention provides a nitrogen-defect g-C3N4 / CsCu2I3 composite material as well as a preparation method and application thereof, and belongs to the technical field of preparation of nano heterogeneous materials. A preparation method of a nitrogen-defect g-C3N4 / CsCu2I3 composite material comprises the following steps: dissolving cesium iodide and cuprous iodide in anhydrous acetonitrile, and carrying out a stirring reaction at 50-70 DEG C for 4-6 h to obtain a CsCu2I3 precursor solution; adding g-C3N4 into the CsCu2I3 precursor solution, and reacting for 10-14 hours at the temperature of 50-70 DEG C to obtain a crystallization solution; and dropwise adding diethyl ether into the crystallization solution, carrying out anti-solvent crystallization, aging, washing and drying to obtain the nitrogen-defect g-C3N4 / CsCu2I3 composite material. The nitrogen-containing defect rod-like g-C3N4 / CsCu2I3 binary nano heterojunction with good gas sensitive performance is prepared by the method disclosed by the invention.

The present invention provides an easy and scalable process for producing a compound of formula (I): N(2y / z)[Mx(GO3)y](I), wherein [Mx(GO3)y] is an anion, wherein Mx is an Atomic Quantum Cluster (AQC) consisting of x number of zero valent metal atoms; wherein G is Si or Ti; and y is an integer selected from 1, 2, 3, 4, 5 and 6; and wherein the compound of formula (I) has no net charge. In addition, the present invention is directed to a composition comprising the compound of formula (I), a process for producing the compound of formula (I); the uses of the compound of formula (I) and the compound of formula (I) for use as a medicament, its second medical uses, a pharmaceutical composition, kit-of-parts and an apoptotic agent comprising said compound of formula (I).

The application discloses a sodium-ion layered positive electrode material, a preparation method and a positive electrode sheet. + , H + , F ‑ of a lithium-ion battery core recovery liquid; a sodium source and the lithium-ion battery core recovery liquid are prepared into a solution; (2) a sodium-ion layered positive electrode material is mixed into the solution to prepare a mixed slurry; (3) the mixed slurry is subjected to suction filtration and drying to obtain a precursor powder; and (4) the precursor powder is sintered to obtain the sodium-ion layered positive electrode material. The application overcomes the defects of poor cycle performance and unstable surface of the sodium-ion layered positive electrode material.

The invention discloses a preparation method of a cesium-copper-iodine semiconductor for a photoelectric device, and belongs to the field of semiconductor halide perovskite luminescence, and the cesium-copper-iodine semiconductor prepared by the method is used as a core functional material for manufacturing devices such as an LED (Light Emitting Diode), an ultraviolet photoelectric detector and a scintillator. The preparation method comprises the following steps: dissolving cesium-copper-iodine in an organic solvent, dropwise adding hypophosphorous acid to obtain a mixed solution, transferring the mixed solution into a reaction kettle for reaction to obtain a cesium-copper-iodine mixed solution, extracting cesium-copper-iodine microcrystalline powder by using an anti-solvent process, centrifuging, drying and grinding to obtain the cesium-copper-iodine microcrystalline powder. And the all-inorganic cesium-copper-iodine microcrystalline powder with high quantum yield, high crystallinity and high stability is obtained. The hypophosphorous acid added in the preparation is used for inhibiting oxidation and improving the synthesis quality of the cesium-copper-iodine microcrystal particles, and the synthesis in the reaction kettle is used for enabling the cesium-copper-iodine reaction to be more sufficient, the crystal structure to be more complete and the phase to be purer, so that the high stability and the high quantum yield of the cesium-copper-iodine microcrystal powder are ensured.

The invention relates to a treatment method of copper-containing waste acidic etching liquid, in particular to a low-cost recovery treatment method of waste acidic etching liquid based on ammonia water alkali neutralization reaction, which adopts a conventional alkali neutralization method to recover and treat waste acidic etching liquid, and has the advantages of higher alkali consumption and higher treatment cost. In order to solve the problems, the invention provides the low-cost recovery treatment method for the waste acid etching liquid based on the ammonia water alkali neutralization reaction, the method starts from evaporation and concentration of the waste acid etching liquid to the steps of alkali neutralization reaction, filter pressing, micro-pressure reaction, deamination, final evaporation and crystallization and the like, and each link is elaborately designed; compared with the prior art, the method provided by the invention ensures the high efficiency and stability of the treatment process, the ammonia water is adopted as alkali for alkali neutralization, the cost is lower, the ammonia water used in the alkali neutralization reaction is effectively recycled through the deamination reaction, the total usage amount of the ammonia water in the treatment process is remarkably reduced, and the recovery treatment cost of the waste acidic etching liquid is further reduced.

A powder comprising a metal oxide, wherein the powder satisfies the following conditions (1) and (2): (1) has a peak top of particle size in a range of 0.1 to less than 5 μm and in a range of 5 to less than 50 μm in a frequency distribution curve based on a volume-based particle size distribution obtained by a laser diffraction method, (2) a difference between a tap density and an initial bulk density satisfies the following relationship: 0.88 g / cm 3 ≤ (tap density - initial bulk density) ≤ 0.94 g / cm 3 .

The application belongs to the field of novel multi-component photoelectric conversion materials, and particularly relates to a hexagonal Cu3GeS4 quantum dot, a preparation method and application thereof. The crystal form of the Cu3GeS4 quantum dot is hexagonal, and the micro-morphology is nanoscale spherical and / or polyhedral structure. The preparation method comprises the following steps: (1) dissolving germanium dioxide in a mercaptoacetic acid and ammonia water medium for standby; (2) dissolving a copper source in a high-boiling organic solvent and heating to a first temperature for constant temperature reaction for a period of time, then rapidly heating to a second temperature, injecting the germanium solution, and separating the solid product after the reaction is completed, thereby obtaining the product. The Cu3GeS4 quantum dot has high crystallinity, high monodispersity and uniform morphology size. The synthesis method has mild reaction conditions and simple process, realizes controllable preparation of the hexagonal Cu3GeS4 quantum dot with controllable size, uniform morphology, high crystallinity and monodispersity, and the nanomaterial can be potentially applied to the field of photoelectric conversion.

The present application relates to a non-noble metal composite oxide catalyst and its preparation method and use, the non-noble metal composite oxide catalyst is Ce x Cu y O2 catalyst, wherein, x+y=1, 0.05≤y≤0.55.The present application utilizes Cu element to promote the redox capacity of the non-noble metal catalyst, the NH3 conversion rate of the catalyst is all above 80% under the condition of 250 DEG C, the N2 selectivity is all above 87% under the condition of 200 DEG C, further preferably, the NH3 conversion rate is all above 95% under the condition of 250 DEG C, when the temperature is higher than 250 DEG C, the NH3 conversion rate is still all above 95%, and the non-noble metal composite oxide catalyst has high selectivity to N2 in the process of catalyzing NH3 conversion, meets the current market application demand.

A superconductor having improved critical current density when exposed to high-energy neutron radiation and high magnetic fields, such as found in a compact nuclear fusion reactor, and a method of making the same are described. According to some aspects, the method includes, prior to deployment in the exposure environment, irradiating a polycrystalline superconductor with ions and / or neutrons at a cryogenic temperature to create "weak" magnetic flux pinning sites, such as point defects or small defect clusters. Irradiation temperature is chosen, for example as a function of the superconducting material, so that irradiation creates the beneficial flux pinning sites while avoiding detrimental widening of the boundaries of the crystalline grains caused by diffusion of the displaced atoms. Such a superconductor in a coated-conductor tape is expected to be beneficial when used as a toroidal field coil in a fusion reactor when cooled well below its critical temperature.

The present invention relates to a method for delithiating at least one lithium transition metal nitride, the method comprising the following steps: a) mixing at least one oxidizing agent with said lithium transition metal nitride, and b) recovering the material obtained at the end of step a).

The present application relates to a nanocomposite preparation apparatus and a nanocomposite prepared using same, and a nanocomposite preparation apparatus of the present application can prepare a nanocomposite having excellent stability by reducing toxicity while maintaining antibacterial properties of conventional antibacterial metals.

The invention relates to the field of ion batteries, in particular to a metal compound soft and hard carbon composite material and a preparation method and application thereof. A polyphenol hydroxyl structure in a polyphenol substance generates a strong chelation effect and a multivalent effect, a complex formed by the polyphenol substance and metal ions shows excellent stability, after high-temperature calcination, the surface layer is coated with soft carbon and a hard carbon template to complete heteroatom doping, and an intermediate complex is fired into a target compound. A hard carbon-metal compound-soft carbon three-layer coating structure relieves volume expansion and provides good electrochemical performance, and soft carbon coating reduces contact between hard carbon and electrolyte and improves the first efficiency of the battery. Biomass waste is adopted to be suitable for acid treatment and purification, the consistency of hard carbon is greatly improved, a uniform cellulose hard carbon template is prepared, meanwhile, polyphenol substances and cellulose have strong non-power-supply interaction, combination of the polyphenol substances and the cellulose is firmer through a cross-linking agent, formation of a complex on the cellulose template is facilitated, and the structural stability is enhanced.

The invention discloses a CsCu3S2 semiconductor material, a CsCu3S2 / Ga2O3 heterojunction and application of the CsCu3S2 / Ga2O3 heterojunction in photoelectric detection, and the CsCu3S2 semiconductor material and the CsCu3S2 / Ga2O3 heterojunction comprises the following steps: weighing cuprous sulfide, thiourea and cesium hydroxide monohydrate, and adding the cuprous sulfide, the thiourea and the cesium hydroxide monohydrate into a polytetrafluoroethylene liner; adding ethidene diamine into the polytetrafluoroethylene liner, sealing the polytetrafluoroethylene liner, then loading the polytetrafluoroethylene liner into a reaction kettle, and pressurizing to form a closed self-pressure system; placing the reaction kettle in a drying oven for heating and heat preservation, and naturally cooling to room temperature; sequentially carrying out cleaning and centrifugal treatment on the cooled reaction product; and removing the centrifuged supernatant, and carrying out vacuum drying on the precipitate to obtain CsCu3S2 nano-particle powder. The CsCu3S2 nano-particles prepared by the method are high in purity, good in crystallinity, high in light absorption activity and uniform in morphology; meanwhile, a CsCu3S2 sheet is used as a light absorption layer to be combined with Ga2O3 to form a heterojunction, and the heterojunction is combined with a silver paste electrode to form the photoelectric detector with excellent self-power-supply characteristics.

The present invention addresses the problem of providing: cerium oxide nanoparticles having high antioxidation performance; a liquid dispersion containing cerium oxide nanoparticles; and an antioxidant agent.　The present invention provides cerium oxide nanoparticles produced by mixing a salt of at least one metal element selected from alkaline earth metals, transition metals respectively having atomic numbers of 21 to 29, 39 to 43 and 72 to 74 and lanthanoids, a heterocyclic amine, and a solution containing a cerium (III) ion or a cerium (III) salt together and then adding an oxidizing agent to the resultant product.

Disclosed in the present invention are a magnetoplumbite-type oxide, and a preparation method therefor and the use thereof. The preparation method therefor comprises the following steps: S1, dissolving a rare earth nitrate, a transition metal nitrate and Al(NO3)3 in deionized water to obtain a mixed nitrate solution; S2, adding citric acid monohydrate to the mixed nitrate solution, heating and stirring the resulting mixture, and evaporating same to obtain a transparent gel; S3, drying the gel to obtain a loose and porous xerogel; S4, performing a first high-temperature treatment on the xerogel in an air atmosphere at 650-950°C to prepare a precursor; and S5, grinding and pulverizing the precursor, grinding and mixing the precursor with a soluble salt until uniform, and then performing a second high-temperature treatment in an air atmosphere at 1500-2000°C to prepare a magnetoplumbite-type oxide. The preparation method of the present invention has low costs, is simple and feasible, and has a wide range of application, and when applied to a lithium-sulfur battery, the prepared magnetoplumbite-type oxide helps improve the performance of the battery.

The invention discloses a method for synthesizing lead-free Cu: CsBr perovskite (Cu: CsBr NCs) stable in an aqueous solution by using a one-pot method, which comprises the following steps of: selecting cesium carbonate, copper bromide and citric acid as reactants, and oleic acid and oleylamine as surface ligands, adding a proper amount of octadecene or mineral oil, performing ultrasonic treatment to obtain a Cu: CsBr-coated CC solution, and centrifuging, purifying and drying the solution to obtain the lead-free Cu: CsBr-coated CC perovskite (Cu: CsBr NCs) stable in the aqueous solution. Cu: CsBr (at) CC powder is obtained. The method disclosed by the invention is simple to operate, short in time and good in repeatability, can be synthesized by only one step, and the prepared compound is good in solubility in an aqueous solution, excellent in dispersity, stable in fluorescence and easy to store.

This invention discloses a copper-manganese disordered high-voltage copper-based oxide material and its applications. The chemical formula of this material is: Na 0.67 Cu 0.33 Mn 0.67‑x A x O2; wherein Cu has a valence state of +2, Mn has a valence state of +4, and A is one or more elements selected from Ti, Zr, Si, Ge, Sn, Hf, Pb, Ce, and Th, with 0.02≤x≤0.34 and A having a valence state of +4; in the transition metal layer, the transition metal ions are randomly arranged, causing the transition metal layer elements to migrate to the sodium layer at a voltage of 4.5V, constructing a Na-O-A configuration, and improving the energy density of the material by activating the redox reaction of oxygen. This material is used as the positive electrode of a sodium-ion secondary battery. The copper-manganese disordered high-voltage copper-based oxide material provided by this invention is simple to prepare, and the elements sodium, copper, manganese, and titanium contained therein are all non-toxic and safe elements. In this material, the redox couple itself has a high voltage. In the transition metal layer, the transition metal ions are arranged in a disordered manner, leading to the activation of the redox reaction of oxygen at high voltage.

To provide powder capable of easily forming a tough metal oxide surface for a metal oxide coating on an organic material substrate.SOLUTION: Powder containing a metal oxide satisfies the following conditions (1) and (2). (1) The powder has a peak top of the particle size in the range of 0.1 μm or greater and less than 5 μm and 5 μm or greater and less than 50 μm in a frequency distribution curve obtained in volume-based particle size distribution measurement using a laser diffraction scattering system. (2) The powder has a difference between a tap bulk density and an initial bulk density satisfying the following relation. 0.88 g / cm3≤(tap bulk density-initial bulk density)≤0.94 g / cm3.SELECTED DRAWING: Figure 1

The invention relates to an asymmetric valence copper site catalytic electrode in an alkaline-rich environment, a preparation method of the asymmetric valence copper site catalytic electrode, an electrochemical CO2RR reactor and application of the electrochemical CO2RR reactor. Mixing the CuM-LDH precursor with a binder to prepare slurry, and coating the surface of a conductive substrate with the slurry to form a precursor electrode; wherein M is selected from metal elements; and carrying out electrochemical reduction treatment on the precursor electrode to form the asymmetric valence copper site catalytic electrode in an alkaline-rich environment. According to the preparation method, the CuM-LDH precursor is subjected to electrochemical reduction treatment, so that Cu0-Cudelta + asymmetric active sites are formed in a CuAl-LDH layer in situ, the structural characteristics of CuM-LDH are reserved, the Cu0-Cudelta + asymmetric site catalyst rich in an alkaline environment is formed, the catalytic efficiency of electrochemical CO2RR reaction in neutral / near-neutral electrolyte is remarkably improved, and the catalytic activity of the CuM-LDH is improved. The method is suitable for preparing C2 + products through efficient CO2RR electrolysis.

The application discloses a CsCu3S2 semiconductor material, a CsCu3S2 / Ga2O3 heterojunction and application of the CsCu3S2 / Ga2O3 heterojunction in photoelectric detection, and comprises the following steps: weighing cuprous sulfide, thiourea and cesium hydroxide monohydrate, and adding the cuprous sulfide, the thiourea and the cesium hydroxide monohydrate into a polytetrafluoroethylene inner container; adding ethylenediamine into the polytetrafluoroethylene inner container, sealing the polytetrafluoroethylene inner container, and loading the polytetrafluoroethylene inner container into a reaction kettle to pressurize, so as to form a closed self-pressure system; placing the reaction kettle in an oven to heat and keep warm, and naturally cooling to room temperature; sequentially performing cleaning and centrifugal treatment on the cooled reaction product; removing supernatant after centrifugation, vacuum drying the precipitate, and obtaining CsCu3S2 nanoparticle powder. The CsCu3S2 nanoparticle powder prepared by the application has high purity, good crystallinity, high light absorption activity and uniform morphology; meanwhile, the CsCu3S2 sheet is combined with Ga2O3 to form a heterojunction, and a silver paste electrode is combined to form a photoelectric detector with excellent self-power supply characteristics.

The present invention relates to a facile synthetic method to synthesize novel hexagonal phase CuCo (H—CuCo) PBAs with high crystallinity, as well as extended synthesis of doping PBAs with hexagonal phase: Fe0.1—CuCo, Fe0.2—CuCo, Co0.1—CuCo, Ni0.1—CuCo, and Zn0.1—CuCo. The hexagonal phase H—CuCo PBAs and the doping sequence of PBAs with hexagonal phase exhibit superior crystallinity and significantly higher intrinsic specific surface area. Meanwhile, H—CuCo PBAs show great potential for gas adsorption and have a positive impact on the development of PBAs for other applications.

The application discloses a bimodal metal nanometer enzyme, a preparation method thereof and biomedical application, and comprises the following steps: calcining a metal-organic framework precursor in a nitrogen atmosphere at a temperature increasing rate of 5-10 o C / min to 500-900 o C for 2-3 hours to obtain the bimodal metal nanometer enzyme. The nanometer enzyme has different metal bonding structures, exhibits a simulated enzyme catalytic performance, can release metal ions in response to acid, can realize chemical kinetics-immune synergistic treatment and on-demand regulation of an immune microenvironment, and has potential application value in the biomedical field.

The application relates to the technical field of heating devices, in particular to an MVR evaporation and multi-stage countercurrent heat exchange device for low-temperature crystallization of basic copper carbonate, which comprises an evaporation tank for solution evaporation and a heat exchange tank for heat exchange, a circulating assembly is arranged outside the evaporation tank, the circulating assembly comprises a flow guide pipe arranged outside the evaporation tank and used for conveying steam, and a compressor is arranged outside the flow guide pipe. Through the arrangement of the circulating assembly, the steam gradually flows upwards in the heat exchange tank, the basic copper carbonate solution flows downwards in the heat exchange tank and contacts the steam, the steam can heat the basic copper carbonate solution, the initial temperature of the basic copper carbonate solution can be increased to a certain extent, the evaporation efficiency of the basic copper carbonate solution can be increased to a certain extent, the heat utilization efficiency can be effectively improved through full utilization of the heat, and the additional loss of the heat can be reduced.