194results about "Copper sulfides" patented technology

The invention discloses a layered cobalt aluminum oxide / copper sulfide wave-absorbing material and a preparation method thereof, and belongs to the technical field of novel wave-absorbing materials, the wave-absorbing material is prepared through a two-step hydrothermal method, lamellar cobalt aluminum hydroxide is prepared through the hydrothermal method, then the lamellar cobalt aluminum oxide subjected to heat treatment is used as a substrate, and the lamellar cobalt aluminum oxide / copper sulfide wave-absorbing material is prepared through the two-step hydrothermal method. The preparation method comprises the following steps: growing nano flaky copper sulfide on the cobalt-aluminum oxide / copper sulfide composite material by adopting a hydrothermal method to form a layered cobalt-aluminum oxide / copper sulfide heterostructure, and adjusting the wave-absorbing property of the composite material by adjusting the content of the copper sulfide in the composite material. According to the layered cobalt aluminum oxide / copper sulfide wave-absorbing material and the preparation method thereof, the layered cobalt aluminum oxide / copper sulfide wave-absorbing material has the advantages that the density is relatively low, the effective absorption frequency band is relatively wide, the electromagnetic wave absorption performance is relatively high, the preparation method is simple, the morphology of the composite material can be regulated and controlled, and the like.

The invention discloses a preparation method and application of a nickel-doped graded nano array electro-catalysis material, and relates to the technical field of nano material preparation, the preparation method comprises the following steps: preparing a solution by taking foamy copper as a substrate material and sodium hydroxide and ammonium persulfate as raw materials; a copper hydroxide nanobelt array precursor is synthesized on a foamy copper substrate in an in-situ growth mode through chemical oxidation treatment, then the precursor is converted into a nickel-doped cuprous sulfide nanorod array through hydro-thermal treatment, uniform nanosheets are formed on nanorods through the electro-deposition process, and the nickel-doped graded nanorod array electro-catalysis material can be obtained. By optimizing the synthesis method and adjusting the doping proportion, the obtained graded nano array shows relatively low overpotential and excellent stability in an electro-catalytic reaction, and the problems of low catalytic efficiency, poor durability and the like and insufficient stability of an existing catalyst are solved.

The invention relates to an efficient copper removal and recycling process for copper-cyanogen complex wastewater, which comprises the following steps: (1) critical acidification-selective crystallization of the copper-cyanogen complex wastewater: directionally recombining a copper-cyanogen complex to generate insoluble CuCN crystals by accurately regulating and controlling the pH value of the wastewater; (2) rotational flow enhanced crystallization: separating CuCN crystals from overflow liquid through a hydrocyclone; (3) gradient activation of a composite vulcanizing agent for deep copper removal: enabling the fine CuCN particles and the dissolved-state low-coordination copper-cyanogen complex to react to generate insoluble CuS crystals by adjusting the pH value and adding the composite vulcanizing agent; and (4) magnetic seed enhanced separation: carrying out magnetic separation by adopting modified magnetic seeds and a low-intensity magnetic separator, separating CuS magnetic flocs from the wastewater, and finally obtaining purified tail liquid. According to the closed-loop process, copper in the copper-cyanogen complex wastewater can be efficiently removed and recovered, the purified tail liquid can be reused for cyanidation leaching operation, the unit consumption of sodium cyanide is remarkably reduced, the leaching rate of gold and silver is increased, and zero discharge of wastewater and full recovery of copper resources are truly achieved.

The invention discloses a CuS (at) gamma-MnS heterojunction photocatalyst as well as a preparation method and application thereof. The catalyst is a heterojunction photocatalytic composite material formed by growing CuS nanosheets on a blocky gamma-MnS semiconductor material; during preparation, wurtzite phase gamma-MnS is synthesized at normal temperature through a ball milling method, CuS nanosheets grow in situ in combination with a low-temperature oil bath method to form a tight heterogeneous interface, and the crystal form regulated CuS gamma-MnS heterojunction photocatalyst is obtained. The CuS (at) gamma-MnS heterojunction photocatalyst based on crystal form regulation and control shows enhanced hydrogen production, double water decomposition and tetracycline hydrochloride degradation properties and excellent photocatalytic stability; the crystal form of the CuS-coated gamma-MnS heterojunction photocatalyst is accurately regulated and controlled through the full-normal-temperature process (ball milling and low-temperature oil bath), kilogram-level production can be achieved, energy consumption is reduced, and a new strategy is provided for design of industrial-level photocatalysts.

The invention discloses a preparation method of a heat-insulating ionic adhesive film and safety glass thereof, and belongs to the technical field of glass preparation. The preparation method comprises the following steps: S1, stirring and mixing Cu (NO3) 2.3 H2O and ionic liquid to obtain a blue colloidal solution; s2, reacting the blue colloidal solution in a reaction kettle, collecting a nano CuS product, and dispersing the nano CuS product in deionized water to obtain flaky nano CuS; s3, a silane coupling agent is dissolved in absolute ethyl alcohol and stirred, a mixed solution is obtained, nano CuS is added into the mixed solution, magnetic stirring is conducted, and then ultrasonic treatment is conducted; s4, blending the solution subjected to ultrasonic treatment with SGP resin, and then taking out and drying to obtain a blend; and S5, extruding the blend into a sheet by using a parallel twin-screw extruder, and pressing and shaping the extruded sheet by using a conveyor belt tractor to obtain the adhesive film. The oxygen vacancy modified CuS improves the photocatalysis, antibacterial or ultraviolet shielding performance and is suitable for building or automobile glass, and the SGP resin matrix has high transparency, weather resistance and flexibility and is suitable for laminated safety glass.

Methods of flash-within-flash (FWF) Joule heating and the systems thereof. The FWF Joule heating process subjects outer feedstock in an outer vessel to a flash Joule heating process, whereby the flash Joule heating process upon the outer feedstock results in the conversion of inner feedstock within an inner vessel (which inner vessel is within the outer vessel) to a converted material.

The invention relates to a hydrogel light-operated multi-mode synergistic treatment platform based on a CuxS-MoS2 heterojunction for promoting wound healing of diabetes mellitus. And an interface induced electric field strategy is provided through density functional theory (DFT) calculation to optimize the charge migration behavior of the phototherapy agent. The multifunctional phototherapy system is constructed by taking CuxS-MoS2 with a built-in electric field as a core and PVA-CS hydrogel loaded with glucose oxidase (GOx) as a bracket. In a weakly acidic wound microenvironment, glucose at the wound is catalyzed by GOx to be converted into H2O2 and gluconic acid; meanwhile, the CuxS-MoS2 remarkably enhances the generation of reactive oxygen species (ROS) under illumination through peroxidase-like (POD) activity, photothermal effect (PTT) and heterojunction efficient carrier separation. After entering a proliferation period, the stent exerts catalase-like (CAT) activity to remove excessive ROS and release oxygen, and oxygen deficit and oxidative stress are relieved. In addition, the controllably released copper ions regulate and control the behavior of fibroblasts, promote healing and inhibit fibrosis. Experiments prove that the stent has excellent biocompatibility, effective antibacterial property and remarkable healing promoting effect in chronic wound repair of diabetes mellitus.

The invention relates to the field of hydrogen production through water electrolysis assisted by small molecule oxidation, and discloses transition metal element doped Cu7S4 and a preparation method and application thereof.The copper-based sulfide comprises a Cu7S4 material and transition metal elements doped in the Cu7S4 material, the transition metal elements comprise nickel and / or iron, and the transition metal elements are doped in the Cu7S4 material. The copper-based sulfide provided by the invention has relatively low overpotential and excellent catalytic activity under an alkaline condition.

The invention provides a copper heptasulfide / cobalt octasulfide / carbon composite material, a preparation method and application thereof, and a rechargeable battery, a nanosphere Cu7S4 / Co9S8 / C composite material composed of hollow nano blocks is prepared through a room temperature sedimentation method and an annealing process, a bimetallic sulfide Cu7S4 / Co9S8 and carbon form a heterojunction, and the preparation method is simple and efficient. Compared with the prior art, the composite electrode material shows multiple advantages in the charging and discharging process of the sodium ion battery through multi-component collaborative design and nanostructure optimization, and the product shows high reversible capacity of 305mAh g <-1 >, high specific capacity, stable cycle performance and steady rate capability after 1000 cycles under the current density of 3Ag <-1 >.

This disclosure relates to a process for removing cadmium and copper, and optionally arsenic, from phosphoric acid solutions typically obtained by wet methods. The process can also allow for the selective and separate recovery of cadmium, copper, and arsenic.

The invention relates to the technical field of sodium ion battery negative electrode materials, and discloses a preparation method and application of a copper-iron sulfide nitrogen-doped porous carbon composite material, and the preparation method comprises the following steps: (1) mixing copper salt, potassium ferricyanide, a nitrogen source and polyethylene glycol, and carrying out ball milling to obtain a copper-iron Prussian blue precursor; (2) pyrolyzing the copper-iron Prussian blue precursor in an inert atmosphere, washing to remove impurities, and drying to obtain an intermediate product; and (3) carrying out heat treatment on the intermediate product and a sulfur source in an inert atmosphere to obtain the copper-iron sulfide / nitrogen-doped porous carbon composite material. Through the synergistic effect of compounding of the bimetallic sulfide and the nitrogen-doped porous carbon, sodium ions with larger ion radiuses are more easily embedded and deembedded in interlayer spacing, and meanwhile, abundant active sites are provided to enhance the storage of the ions, so that the lithium ion battery has outstanding rate capability and stable cycle performance.

In view of the defects of low water electrolysis performance (such as low catalytic activity, poor stability, high cost and the like) at present, a novel multi-step wet chemical method is adopted to prepare a CuS (at) MOOH (M: transition metal) electrocatalyst containing a crystal-amorphous interface to solve the problems. According to the catalyst, an alkaline bifunctional electrolytic tank with high catalytic activity and good stability is successfully prepared through a simple preparation process and low manufacturing cost. Under the action of a crystal-amorphous interface, the CuS (at) MOOH can cause electrons of orbits of metal active sites to exert a better redistribution function, rapid transfer of the electrons is promoted, and meanwhile, the adsorption energy of Cu and M bimetallic active sites to reaction intermediates in HER and OER reactions is reduced. Wherein the CuS (at) CoOOH has an overpotential of hydrogen evolution of 38 mV (HER) and oxygen evolution of 190 mV (OER) by taking Co as an example. According to the water electrolysis device taking CuS-coated CoOOH as a cathode and an anode, ultrahigh electrolysis efficiency is maintained in a continuous electrolysis state of 100 hours.

Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate. The production method for cobalt sulfate includes: a copper removal step (S1) of adding a sulfurizing agent to a cobalt chloride solution containing one or more impurities of copper, zinc, manganese, calcium, and magnesium and generating a precipitate of sulfide of copper to separate to remove copper; a neutralization step (S2) of adding a neutralizer or a carbonation agent to a cobalt chloride solution having undergone through the copper removal step (S1) and generating cobalt hydroxide or basic cobalt carbonate to separate magnesium; a leaching step (S3) of adding sulfuric acid to the cobalt hydroxide or the basic cobalt carbonate to obtain cobalt sulfate solution; and a solvent extraction step (S4) of bringing an organic solvent containing an alkyl phosphoric acid-based extractant to the cobalt sulfate solution and extracting zinc, manganese, and calcium into the organic solvent to separate to remove zinc, manganese, and calcium. These steps are sequentially executed.

The invention discloses a nanorod-shaped Cu1.8 S material as well as a preparation method and application thereof. The preparation method comprises the following steps: adding ascorbic acid into a copper ion solution, then adding Na2S or K2S, stirring for reaction, centrifuging and washing to obtain a nanorod-shaped Cu1.8S material; the pH value of the copper ion solution is 2-4. The nanorod-shaped Cu1.8S material belongs to a hexagonal crystal system, the center of Cu and S atoms of the first coordination form three Cu-S coordination with the average bond length of # imgabs0 #, the synthesized material conforms to the crystal form characteristics of Cu1.8S, and the material has application prospects in thermoelectricity, photocatalysis and water treatment.

This invention belongs to the technical field of magnesium-ion battery materials, specifically to a method for preparing ruthenium disulfide-copper pentasulfide (Cu9S5-RuS2) cathode material for magnesium-ion batteries. This method utilizes a simple hydrothermal synthesis technique, using copper dichloride dihydrate, thiourea, and ruthenium trichloride as raw materials to successfully synthesize Cu9S5-RuS2. This Cu9S5-RuS2, as a cathode material for magnesium-ion batteries, exhibits excellent electrochemical performance. Furthermore, the preparation process is simple to operate, contributing to the advancement and commercialization of magnesium-ion battery technology.

The application belongs to the technical field of electrochemical energy storage materials, and discloses application of a sulfide-based hollow nanobrick heterojunction anode coating material and a preparation method thereof, in particular, application of the sulfide-based hollow nanobrick heterojunction anode coating material to an aqueous zinc ion battery, wherein the sulfide-based hollow nanobrick heterojunction comprises an X metal sulfide and a Y metal sulfide, and the heterojunction is represented as XS-YS n , 0 < n < 3, X is Zn, and Y is selected from one of Sn, Co, Cu or Mo; the preparation method comprises the following steps: mixing a zinc salt and a fluoride etchant, and one of a tin salt, a cobalt salt, a copper salt or a molybdenum salt, and then performing a hydrothermal reaction to obtain a bimetal-based hollow nanobrick precursor; and then performing sulfurization calcination to obtain the XS-YS n . The sulfide-based hollow nanobrick heterojunction can effectively inhibit zinc dendrite growth and interface side reactions, thereby significantly improving the electrochemical stability of the material, and further prolonging the cycle life of the aqueous zinc ion battery.

The application discloses an upper critical solution temperature responsive mesoporous silicon and a preparation method and application thereof, and is characterized in that: mesoporous silicon is coated on the outside of copper sulfide nanoparticles (CuS NPs), and then the coated CuS NPs are subjected to amination by using an APTES solution, and then a temperature-sensitive material PEG-p(AAm-co-AN) is grafted to form the upper critical solution temperature responsive mesoporous silicon. The application has the advantages of simple method, easy operation and mild reaction condition; the final product has good stability, can be used for loading a chemotherapeutic drug doxorubicin hydrochloride, and can realize drug controlled release; has temperature response drug release performance, and the phase transition temperature of the carrier is 43 DEG C, which is suitable for the microenvironment of tumor tissues; can be subjected to photothermal therapy under the irradiation of a 980nm laser, and realizes the synergistic effect of photothermal therapy and chemotherapy.

The invention belongs to the technical field of magnesium ion battery materials, and particularly relates to a preparation method of a ruthenium disulfide-copper pentasulfide (Cu9S5-RuS2) magnesium ion battery positive electrode material. According to the method, Cu9S5-RuS2 is successfully synthesized by adopting a simple hydrothermal synthesis technology and taking cupric chloride dihydrate, thiourea and ruthenium trichloride as raw materials. The Cu9S5-RuS2 prepared by the method is used as a positive electrode material of a magnesium ion battery, and shows excellent electrochemical performance. In addition, the preparation process is simple and convenient to operate, and is beneficial to promoting the technical development and commercialization process of the magnesium ion battery.

The invention discloses a vanadium-based sulfide heterostructure preparation method, which comprises: 1) respectively grinding a copper source, a vanadium source and a sulfur source through a mortar, adding into deionized water, uniformly stirring at a room temperature, and adjusting the pH value of the system to 10-13 to obtain a mixed solution; 2) transferring the mixed solution into deionized water, uniformly mixing, and carrying out heating reaction; and after the reaction is finished, cooling, centrifuging and drying to obtain the vanadium-based sulfide heterostructure. CuS is introduced into Cu3VS4 by a hydrothermal method to construct a heterostructure, the electron mobility of the material is improved, the conductivity and magnesium ion diffusion power are further improved, the specific capacity of the prepared Cu3VS4 / CuS is excellent, and the capacity can reach 200 mAh / g after activation; the preparation method is simple and convenient in process, wide in applicability, high in safety performance, capable of accurately regulating and controlling the phase content, low in reaction raw material and equipment requirements and capable of being popularized and applied on a large scale.

This invention discloses a CuS nanostructure material, its preparation method, and its applications. The CuS nanostructure material uses Cu-MOF octahedrons as a precursor, which are hydrothermally sulfided to obtain an octahedral hierarchical structure assembled from CuS nanorods. The CuS nanorods have a size of 50-100 nm, and the edge length of the precursor Cu-MOF octahedrons is 0.8-1 μm. This invention utilizes a one-step hydrothermal method to prepare a CuS nanostructure material through Cu-MOF sulfidation, resulting in a zinc-ion battery anode material with high conversion efficiency and excellent electrochemical performance.

The present invention relates to a method for removing cadmium and copper and optionally arsenic contained in phosphoric acid solutions typically obtained in wet processes. The process also enables selective and separate recovery of cadmium, copper and arsenic.

The invention discloses a treatment process for high-copper sulfur concentrate waste sulfuric acid treatment, and relates to the technical field of waste sulfuric acid treatment, the treatment process comprises the following steps: S1, waste sulfuric acid pretreatment; s2, copper deposition reaction; s3, cobalt and nickel precipitation reaction; and S4, carrying out double-way optimization treatment. Through the integral treatment process, the high-quality gypsum can be obtained, heavy metals such as copper, cobalt and nickel are prevented from being mixed into the gypsum in the conventional treatment process, and a foundation for effectively utilizing the gypsum is laid. And heavy metals in the waste sulfuric acid are effectively converted into mineral products, so that the heavy metals such as copper, cobalt and nickel in the waste sulfuric acid are comprehensively utilized, and the solid waste generation amount of waste sulfuric acid treatment is reduced.

The invention provides a method for preparing a sulfide heterogeneous foam carrier from foam metal and application, and the method comprises the following steps: placing a sulfur source in a porcelain boat, placing the foam metal in another porcelain boat, placing the two porcelain boats in a quartz tube, and placing the quartz tube in a tubular furnace, placing a porcelain boat filled with a sulfur source at the upstream, close to a gas inlet, of a tubular furnace, and placing a porcelain boat filled with foam metal at the center of the tubular furnace; sealing the tubular furnace, continuously introducing inert gas to keep inert atmosphere, and then heating the tubular furnace to 400-800 DEG C for reaction; and after the reaction is completed, continuously introducing inert gas, reducing the temperature of the tubular furnace to room temperature, and taking out a product, namely the sulfide heterogeneous foam carrier.

The present application belongs to the field of metallurgy, and relates to a method for producing antimony white by directly oxidizing crude antimony, comprising the following steps: S1, mixing crude antimony with crude antimony alloy, and reacting under an oxygen-containing atmosphere, to obtain oxidized slag and a melt after the reaction is completed; S2, adjusting the temperature of the melt, and then introducing compressed air to react, to produce antimony trioxide-containing flue gas, and to obtain antimony oxide slag after the reaction is completed. The present application makes full use of impurities such as sodium sulfide, sodium hydroxide and sodium thiosulfate contained in crude antimony, and innovatively uses these components for arsenic removal reaction, which not only avoids the cumbersome steps of adding various auxiliary materials in the traditional process, but also enables the original sodium sulfide, sodium hydroxide and sodium thiosulfate in the crude antimony to fully play a synergistic role, showing excellent performance in arsenic removal effect, thus simplifying the process flow, significantly reducing the production cost, and realizing the dual improvement of economic benefit and process efficiency.

This invention discloses a method for preparing hollow metal sulfides based on a mild template method using calcium carbonate. Calcium chloride powder and potassium carbonate powder are uniformly dispersed separately in an alcohol solution. The two solutions are then mixed and allowed to stand for aging to obtain solution A. Simultaneously, thioacetamide is dissolved in the alcohol solution to obtain solution B, and a chloride is dissolved in the alcohol solution to obtain solution C. The chloride is either stannous chloride or copper chloride. Then, solutions B and C are added sequentially to solution A at a molar ratio of thioacetamide to chloride of 2:1 and mixed uniformly to obtain solution D. Solution D is then placed in a polytetrafluoroethylene (PTFE) reactor and reacted at 140–180°C for 12 hours. Carbon dioxide is then continuously bubbled through the reactor for 2–3 hours. The mixture is filtered and washed with water and ethanol to obtain the hollow metal sulfides. This invention can obtain hollow metal sulfides with different morphologies and avoids the contamination problems associated with high-temperature calcination or acid dissolution for template removal.

The application relates to the technical field of sodium ion battery negative electrode materials, and discloses a preparation method and application of a copper-iron sulfide / nitrogen-doped porous carbon composite material, which comprises the following steps: (1) mixing copper salt, potassium ferricyanide, a nitrogen source and polyethylene glycol, and obtaining a copper-iron Prussian blue precursor after ball milling; (2) pyrolyzing the copper-iron Prussian blue precursor under an inert atmosphere, washing and removing impurities, and drying to obtain an intermediate product; and (3) heat-treating the intermediate product and a sulfur source under an inert atmosphere to obtain a copper-iron sulfide / nitrogen-doped porous carbon composite material. Through the synergistic effect of the double-metal sulfide and the nitrogen-doped porous carbon composite, sodium ions with a larger ion radius can be more easily embedded and de-embedded in the interlayer spacing, meanwhile, abundant active sites are provided to enhance ion storage, so that the sodium ion battery has outstanding rate performance and stable cycle performance.

Provided is a method for separating impurities and cobalt without using an electrolysis process from a cobalt chloride solution containing impurities and producing a high purity cobalt sulfate. The production method includes: a first solvent extraction step (S1) of bringing an organic solvent containing an alkyl phosphoric acid-based extractant into contact with a cobalt chloride solution containing impurities, and extracting zinc, manganese, and calcium into the organic solvent to separate to remove zinc, manganese, and calcium; a copper removal step (S2) of adding a sulfurizing agent to a cobalt chloride solution and generating a precipitate of sulfide of copper to separate to remove copper; a second solvent extraction step (S3) of bringing an organic solvent containing a carboxylic acid-based extractant into contact with a cobalt chloride solution and back extracting cobalt with sulfuric acid after extracting cobalt into the organic solvent to obtain cobalt sulfate solution; and a crystallization step (S4) of the cobalt sulfate solution obtained after having undergone through the second solvent extraction step (S3). These steps are sequentially executed. Without using an electrolysis process, a high purity cobalt sulfate is directly produced by separating cobalt and impurities containing manganese.

The application provides a kind of copper sulfide@nickel disulfide positive electrode material based on two-dimensional nanosheet wrapping three-dimensional cube and its preparation method and lithium-magnesium dual-ion battery, first using copper salt, alkaline solution and D (+) -glucose in the water bath condition of 70 DEG C, directional formation Cu2O cube.And then, Cu2O and nickel source, sulfur source and surfactant are synthesized by solvothermal synthesis, forming the structure of two-dimensional and three-dimensional combination of NiS2 nanosheet wrapping Cu2S cube.The two-dimensional and three-dimensional combination structure can shorten the particle transmission path, achieve the effect of fast charging and discharging, at the same time, provide more active sites, increase the specific surface area, fully contact with electrolyte, improve the cycle stability of battery.

The present invention provides a method for producing high-purity cobalt sulfate by separating impurities and cobalt from a cobalt chloride solution containing impurities without using an electrolysis process. The method sequentially implements the following steps: a decoppering step (S1), in which a sulfiding agent is added to a cobalt chloride solution containing one or more impurities selected from copper, zinc, manganese, calcium, and magnesium to form a copper sulfide precipitate, which is then separated and removed; a neutralization step (S2), in which a neutralizing agent or a carbonating agent is added to the cobalt chloride solution that has undergone the decoppering step (S1), to form cobalt hydroxide or alkaline cobalt carbonate, thereby separating the magnesium; a leaching step (S3), in which sulfuric acid is added to the cobalt hydroxide or alkaline cobalt carbonate to obtain a cobalt sulfate solution; and a solvent extraction step (S4), in which an organic solvent containing an alkylphosphoric acid-based extractant is brought into contact with the cobalt sulfate solution to extract zinc, manganese, and calcium into the organic solvent for separation and removal. The addition of the neutralizing agent or carbonating agent in the neutralization step (S2) is performed using a countercurrent multi-stage process.

The present invention discloses an ultrasound / magnetic resonance dual-mode nanoprobe and its preparation method and application. The preparation method comprises the following steps: S1, preparing iron sulfide nanosheets (FeS) using ammonium ferrous sulfate, trisodium citrate, etc. as raw materials, and resuspending the FeS in ethanol to obtain an FeS ethanol solution; S2, adding perfluorohexane to the FeS anhydrous ethanol solution, and using an ultrasonic crusher under an ice bath to prepare a FeS / PFH suspension; S3, mixing the FeS / PFH suspension with a 1 mg / mL dopamine hydrochloride anhydrous ethanol solution, stirring at room temperature in the dark, and washing with pure water to obtain the final product, FeS / PFH / PDA nanomaterial. The present invention discloses an ultrasound / magnetic resonance dual-mode nanoprobe and its preparation method and application. The synthesis method for preparing the ultrasound / magnetic resonance dual-mode nanoprobe is simple and highly operable; the synthesized product is stable and reproducible, which is beneficial for biomedical research and clinical disease diagnosis.