44 results about "Tin sulfide" patented technology

The invention relates to the field of design and preparation of powder metallurgy friction materials, in particular to a copper-based powder metallurgy friction material and a preparation method thereof. Raw materials used in the method comprise, by mass, 45%-55% of copper powder, 8%-20% of iron powder, 6%-15% of ferrochromium, 16%-22% of graphite, 0.5%-4% of molybdenum disulfide, 0.5%-4% of tin sulfide and 0.5%-4% of nickel-coated tungsten disulfide, and the mass ratio of the tin sulfide to the nickel-coated tungsten disulfide is (1-2): (1-2). In the nickel-coated tungsten disulfide, the content of nickel is 5-40%; the sum of the total amount of molybdenum disulfide, nickel-coated tungsten disulfide and tin sulfide is less than or equal to 5%. The preparation method comprises the following steps: weighing raw material powder according to the designed components, mixing, pressing and sintering to obtain the product. The composition design has the characteristics of scientificity, simple and controllable process and the like, and the obtained product has excellent tribological performance and completely meets the friction braking requirement of high-speed heavy-load equipment of 400km / h and above.

The invention discloses a preparation method of a polymer carbon nitride / tin sulfide (PCN (at) SnS2) heterojunction photoanode, which comprises the following steps of: constructing the PCN (at) SnS2 heterojunction photoanode in situ on a conductive substrate (FTO) by combining an electrochemical deposition method and a chemical vapor deposition method, adding anhydrous stannous chloride into ethanol for dissolving, spin-coating stannous ions on the surface of the conductive substrate, and oxidizing in an air atmosphere; the preparation method comprises the following steps: adding stannous sulfate and sodium citrate into deionized water, and stirring for dissolving; the prepared conductive substrate is used as a working electrode, and a tin film is deposited on the surface of the conductive substrate by adopting a three-electrode system; dicyandiamide, cyanuric acid and potassium thiocyanate are ground and mixed evenly and then put into a porcelain boat, and the conductive substrate deposited with the tin film is placed on the surface of the precursor and wrapped with aluminum foil; placing the porcelain boat in a tubular furnace, reacting in a nitrogen atmosphere, and cooling to room temperature to form PCN-coated SnS2 on the surface of the FTO. The method improves the problems of insufficient light absorption range and high electron-hole recombination rate of the polymer carbon nitride material, and has the advantages of simplicity, controllability and the like.

The utility model relates to a tin bath sulfur dioxide blowing device which comprises a sulfur dioxide generating device used for generating small-flow sulfur dioxide gas, and the sulfur dioxide generating device is led into a blowing pipe; the blowing pipe is a metal pipe body, one end of the metal pipe body is sealed, the other end of the metal pipe body is connected to the sulfur dioxide generating device through a hose, a small hole is formed in the sealed end, and a nozzle is arranged at the position of the small hole; a flow meter is arranged on the hose and is used for monitoring the flow of sulfur dioxide in the blowing pipe to be small flow; a support is arranged on the metal pipe body, and the blowing pipe is fixed to the positions of climbing rollers, attached with tin sulfide, of the first to third transition roller tables through the support. Sulfur dioxide is blown to the roller through the small holes, sulfur dioxide and tin sulfide are subjected to a chemical reaction, SO2 and the glass plate can generate a Na2SO4 thin film protection layer capable of being wiped off under the high-temperature condition, the Na2SO4 thin film protection layer is attached to the lower surface of the glass plate, and the hardness of the glass plate is increased. The probability of gouges and abrasion is reduced, and the problem of quality defects is solved.

The present invention discloses a covalently bonded tin sulfide / zinc indium sulfide composite material, which consists of two-dimensional zinc indium sulfide nanosheets supported on one-dimensional tin sulfide nanoribbons. The tin atoms in the tin sulfide nanoribbons are covalently bonded to the sulfur atoms in the zinc indium sulfide nanosheets. This composite material can be used as a photocatalyst in photocatalytic water splitting for hydrogen production. The preparation method disclosed in the present invention includes using water-soluble tin source and sulfur source as raw materials, performing hydrothermal reaction in an alkaline aqueous solution to obtain one-dimensional tin sulfide nanoribbons, adding them to the precursor solution of zinc indium sulfide, and heating and stirring to react to obtain the covalently bonded tin sulfide / zinc indium sulfide composite material. The present invention has excellent visible light response ability, promotes the rapid separation and transfer of photo-generated charges, and significantly improves the photocatalytic water splitting performance for hydrogen production. The preparation method of the present invention has a simple process, easily available raw materials, and is suitable for large-scale application.

The invention relates to a method for preparing formic acid by wrapping tin sulfide (SnSx) with graphene oxide (GO) to improve reduction of carbon dioxide (CO2) through electro-catalysis, in particular to an efficient electro-catalysis carbon dioxide reduction system synthesized by wrapping the surface of SnSx with GO through a microwave-assisted method, and belongs to the technical field of catalytic energy. Amorphous SnSx nanoparticles are synthesized by adopting a solution method, and the surface of SnSx is coated with GO nanosheets by adopting a microwave-assisted method to form the SnSx / GO composite material. GO wrapping effectively inhibits crystallization growth of SnSx and loss of sulfur atoms in the electrochemical reduction process, and meanwhile GO is reduced into rGO in situ to optimize mass transfer. In a flow cell, the catalyst achieves a high current density of 126.25 + / -0.78 mA cm <-2 > and a formic acid Faraday efficiency (FE) of 99.9 + / -1.1%. The smooth implementation of the patent provides an efficient strategy for regulating and controlling the efficiency of reducing carbon dioxide into formic acid through electro-catalysis, solves the problem of unstable system structure in the prior art, and provides greater possibility for industrialization in the field of electro-catalysis carbon dioxide reduction.

The invention relates to the technical field of solar cells, and discloses a method for preparing a semiconductor thin film solar cell, which comprises the following steps of: S1, cleaning a substrate: carrying out ultrasonic cleaning on the substrate by using deionized water, alcohol and alkali liquor in sequence; s2, positive electrode deposition: depositing a molybdenum film on the substrate through a magnetron sputtering method; s3, preparing a precursor film: preparing the precursor film by using a sol-gel method; s4, selenylation annealing: putting the precursor film, selenium particles and tin disulfide into a graphite box; s5, buffer layer deposition: depositing a cadmium sulfide buffer layer on the absorption layer through a chemical bath method; s6, depositing a window layer; s7, depositing a negative electrode; and S8, packaging. The tin disulfide atmosphere is introduced in the annealing process, element distribution and crystal quality of the copper-zinc-tin-sulfide thin film are further optimized, composition segregation is effectively inhibited, and the composite defect density in the material is reduced. And the absorption layer has more excellent crystallization characteristics, so that the photoelectric conversion efficiency is remarkably improved.

This invention provides an anode material, its preparation method, and its application. The anode material includes a silicon-carbon material and a modified coating layer covering the surface of the silicon-carbon material. The silicon-carbon material includes a core and a carbon layer covering the surface of the core. The core includes porous carbon and silicon deposited in the pores of the porous carbon. The modified coating layer, in the direction away from the silicon-carbon material, sequentially includes a first coating layer and a second coating layer. The first coating layer is made of tin and tin sulfide, and the second coating layer is made of a tin-modified sulfide solid electrolyte. Tin compensates for irreversible capacity loss and improves first-time efficiency. Tin and tin sulfide have high ionic conductivity, and the "point-to-surface" conductive network formed by tin and the carbon layer can significantly reduce interfacial resistance. The plasticity of the tin-modified sulfide solid electrolyte itself can optimize the interfacial contact between the anode and the electrolyte, reduce interfacial impedance, and buffer the volume expansion stress of the silicon material during charging and discharging. The synergistic effect of the above structures can effectively suppress the volume expansion of the silicon material.

The present invention belongs to the field of the development of new adsorbents and comprehensive utilization of resources, and discloses a preparation method of an inorganic tin sulfide adsorbent and its application in cesium extraction. The adsorbent is synthesized by a hydrothermal method and has a lamellar structure. It has excellent ion exchange performance for alkali metal cesium ions in an aqueous solution and exhibits excellent adsorption selectivity. The adsorbed material can be regenerated, thus realizing the recycling of the adsorption material. The preparation process of the adsorption material provided by the present invention is simple and low in cost. Therefore, the adsorption material prepared by the present invention can be used for the extraction of cesium in geothermal water, salt lake brine, and underground brine, and can also be applied to the separation and extraction of cesium in solid cesium ore or associated ore leaching solutions.

The invention belongs to the technical field of antibacterial photodynamics, and provides antibacterial photodynamics for treating periodontitis by regulating ROS (reactive oxygen species) through microenvironment response and a preparation method of the antibacterial photodynamics. Comprising the following steps: preparing tin sulfide oxide by taking sodium dodecyl benzene sulfonate, tin chloride pentahydrate and L-cysteine as raw materials; zinc nitrate, copper nitrate, urea and thioacetamide are used as raw materials to prepare nano-enzyme; the antibacterial photodynamic material is prepared by taking indocyanine green, bacterial targeting peptide, nano enzyme, tin sulfide oxide and dihydromyricetin as raw materials. The microenvironment response antibacterial photodynamic force aiming at periodontitis infection and treatment characteristics is constructed, the antibacterial photodynamic force is constructed by a strategy of combining bacterial infection microenvironment response ROS programmed regulation and control, precise and long-acting treatment and immune regulation and control, and the curative effect and scene of the antibacterial photodynamic force for treating periodontitis are improved and widened.

The invention provides an ITO waste target recovery method. The ITO waste target recovery method comprises the following steps: mixing an ITO waste target, sulfur and graphite to obtain a mixture; placing the mixture in an inert environment, heating the mixture to 300-430 DEG C, and carrying out a vulcanization reaction to obtain an intermediate after the reaction is finished; heating the intermediate to 1100-1200 DEG C under a first pressure, and obtaining a mixed gas containing indium sulfide and tin sulfide after the reaction is finished; under second pressure intensity, placing the mixed gas containing indium sulfide and tin sulfide at the temperature of 800-850 DEG C, and respectively obtaining condensed indium sulfide and gas containing tin sulfide after the reaction is finished; and placing the gas containing tin sulfide at a temperature of 550-650 DEG C under a third pressure intensity, and obtaining condensed tin sulfide after the reaction is finished. The method provided by the invention is environment-friendly, and the ITO waste target can be recycled to prepare the high-purity indium sulfide.

The application discloses a tin disulfide doped silicon-carbon negative electrode material and a preparation method and application thereof. The silicon-carbon negative electrode material comprises tubular carbon material and tin disulfide, the tin disulfide is located on the surface of the tubular carbon material, and each of the tubular carbon material contains at least one nanosilicon. The silicon-carbon negative electrode material in the application contains tin disulfide, and the specific capacity and rate performance of the silicon-carbon negative electrode material can be improved; the silicon and carbon material can inhibit the volume expansion of the tin disulfide, and the silicon, carbon material and tin disulfide show good compatibility. Therefore, the tin disulfide doped silicon-carbon negative electrode material has excellent specific capacity and rate performance, and when the material is applied to a battery, the battery has good specific capacity, rate performance and cycle stability.

The invention provides a preparation method of a hydrothermal carboxylated cellulose derived carbon dot modified indium tin sulfide (SIS-CDs) composite catalyst. The catalyst has excellent performance in the aspect of photocatalytic synthesis of hydrogen peroxide (H2O2). The preparation method of the catalyst comprises the following steps: synthesizing tin indium sulfide (SnIn4S8, SIS) and a carbon dot solution (CDs) by adopting a solvothermal method and a hydrothermal method respectively, then mixing the two solutions, carrying out oil bath heating under the condition of condensation reflux, and after the reaction, carrying out multiple times of centrifugal washing and drying to obtain the composite material. Wherein the modification of the carbon dots significantly inhibits the recombination of photon-generated carriers, and the carbon dots obtained by hydrothermal carboxylation of cellulose can retain carboxyl groups on the carbon dots, which is beneficial to improving the utilization rate of oxygen (O2) in a reaction system and effectively enriching protons (H +) in water. Experimental results show that when the ratio of a carbon dot solution to water is 60: 40, the composite material has the optimal performance, at the moment, the H2O2 generation rate is 1844 [mu] mol.g <-1 >. H <-1 >, and efficient synthesis of H2O2 is realized in pure water.

The application provides a method for removing uranium and organic matters in water body and generating electricity simultaneously, and particularly relates to the field of resourceful treatment of wastewater. The method comprises the following steps: placing an electrolyte solution containing a source of hexavalent uranium and organic matters in a photoelectrocatalytic reaction tank for light irradiation; the photoelectrocatalytic reaction tank uses tin sulfide nanosheet / carbon felt as a cathode, and uses titanium dioxide nanomaterial and a photovoltaic cell as a composite anode. The application utilizes the light anode to generate electron-hole pairs under light excitation, and the post-positioned photovoltaic cell generates a bias voltage under light excitation to drive the photo-generated electrons to transfer to the cathode and generate electricity, while improving the separation efficiency of the electrons and the holes. The soluble and easily migratory hexavalent uranium is quickly enriched by the tin sulfide nanosheet / carbon felt and is reduced to the non-migratory tetravalent uranium precipitate on the surface of the tin sulfide nanosheet / carbon felt by the photo-generated electrons and low-valence S. According to the test results, the highest removal rate of the method provided by the application to the organic matters and the uranium can reach more than 97%, and the maximum power density is 2.01 mW·cm ‑2 .

An embodiment of the present invention discloses a composite catalyst of tin disulfide supported phosphotungstic acid, and a preparation method and application thereof. The method includes: mixing tin disulfide, a silane coupling agent and an organic solvent, carrying out a grafting reaction under an inert atmosphere, and filtering to obtain modified tin disulfide; mixing the modified tin disulfide, phosphotungstic acid and water, carrying out an impregnation reaction, filtering and then drying to obtain the composite catalyst of tin disulfide supported phosphotungstic acid. The composite catalyst provided by the present invention can efficiently promote the hydrolysis of lithium hexafluorophosphate and the photocatalytic degradation of organic substances, thereby realizing the purification of lithium hexafluorophosphate wastewater and having good application prospects.

The present invention belongs to the field of electrode material technology, and in particular to a tin disulfide-helical carbon nanofiber composite material and its preparation method and application. The present invention mixes spiral carbon nanofibers, a tin source, an organic precipitant, an organic dispersant and an organic solvent to carry out a solvent thermal reaction, and then calcines the reaction product to obtain a tin dioxide-helical carbon nanofiber composite material, and then vulcanizes it in a sulfur vapor atmosphere to finally obtain a tin disulfide-helical carbon nanofiber composite material. The sulfide product prepared by the present invention not only has high purity and high crystallinity, but also has excellent structural stability and electrochemical performance under high current and long-term charge and discharge working conditions. At the same time, the method provided by the present invention does not need to wash and dry the sulfide product when preparing the sulfide product, the operating steps are relatively simple and easy to control, the production cost is greatly reduced, and it has a prospect for large-scale application.

The invention provides a three-dimensional column array type nano-porous SnS lithium ion battery negative electrode, the negative electrode is composed of a nano-column array which is uniformly grown on the surface of a metal substrate in the vertical direction and has a three-dimensional porous structure, and the metal substrate is mainly one of a copper foil, a nickel sheet, foamy copper and foamy nickel; the nanorod is composed of an outer layer and an inner core, the outer layer is stannous sulfide, the inner core is a copper-nickel alloy nanorod, and the stannous sulfide of the outer layer is uniformly distributed on the surface of the metal substrate and is combined with the copper-nickel alloy nanorod of the inner core into a whole. The invention also provides a preparation method of the negative electrode. The method provided by the invention can simplify the production process of the negative electrode of the lithium ion battery and effectively improve the specific capacity and cycle performance of the negative electrode of the lithium ion battery.

The invention relates to a one-dimensional ladder type heterojunction cobalt titanate-tin sulfide photocatalyst which is composed of a (012) diffraction crystal face of one-dimensional cobalt titanate fiber and a (002) diffraction crystal face of tin sulfide. The synthesis method of the one-dimensional ladder-shaped heterojunction cobalt titanate-tin sulfide photocatalyst comprises the following step: adding one-dimensional cobalt titanate fibers in a solvothermal growth process of tin sulfide, so as to obtain the one-dimensional ladder-shaped heterojunction cobalt titanate-tin sulfide photocatalyst. The one-dimensional ladder-shaped heterojunction cobalt titanate-tin sulfide photocatalyst is applied to preparation of solar fuel by catalytic reduction of CO2 under simulated sunlight. The one-dimensional ladder-shaped heterojunction cobalt titanate-tin sulfide photocatalyst has the beneficial effects that the photocatalytic performance is excellent, due to the formation of the ladder-shaped heterojunction, the photocatalyst has stronger light absorption capacity and higher carrier separation efficiency, and the yield of methane prepared by catalytic reduction of CO2 under simulated sunlight irradiation can reach 66 micromoles g <-1 > h <-1 >.

The invention relates to a preparation method of a tungsten-doped tin sulfide composite adsorbent and a rubidium adsorption material, and the preparation method comprises the following steps: (S1) a synthetic reaction step: mixing KCL, W, Sn and S with a proper amount of deionized water according to a molar ratio of (8-16): (0.5-2): (4-8): (10-20), and reacting to obtain a first product; and (S2) washing: washing and drying the first product to obtain the tungsten-doped tin sulfide. And (S3) magnetism endowing: mixing the tungsten-doped tin sulfide and ferroferric oxide according to a molar ratio of (5-15): 1, adding a proper amount of deionized water, mixing, then adding 0.5-2.0 g of sodium alginate, uniformly mixing, and removing bubbles to obtain a mixed solution. And (S4) a cross-linking reaction step: spraying the mixed solution into a barium chloride solution with the mass concentration of 1-10% for reaction, and washing to obtain the tungsten-doped tin sulfide composite adsorbent. The tungsten-doped tin sulfide composite adsorbent disclosed by the invention has the properties of large adsorption capacity, high rate and selectivity on rubidium, and is easily and quickly separated from an adsorption solution.

The invention provides a tin bath gaseous tin compound waste gas high-temperature purification device, which belongs to the technical field of tin bath waste gas purification, and comprises a high-temperature collection assembly, a tin vapor condensation recovery assembly, a composite solid adsorption assembly and a waste gas monitoring and discharging assembly which are connected in sequence, the composite solid adsorption assembly comprises a first-stage adsorber and a second-stage adsorber which are sequentially arranged in the waste gas flowing direction. Aiming at the characteristics of tin steam, tin oxide and tin sulfide, the high-temperature purification device for the gaseous tin compound waste gas in the tin bath adopts a purification sequence of condensing and recovering tin oxide, then removing tin sulfide through NaOH and finally removing tin sulfide, a purification system is reasonably arranged, the efficient and stable operation of the purification system is ensured, meanwhile, ceramic balls are used as carriers of NaOH, and the high-temperature purification device for the gaseous tin compound waste gas in the tin bath is realized. The stability of the purification process is further improved, leakage of waste gas and loss of heat are effectively reduced in the adsorption core replacement process in combination with an automatic isolation structure, and the stability and reliability of long-term operation of the purification system are further improved.

The invention relates to the field of functional materials, in particular to a silver sulfide composite photocatalyst based on indium tin sulfide surface modification and a preparation method thereof.The preparation method comprises the steps that Ag2S nanoparticles are prepared through a two-step hydrothermal method, silver nitrate is dissolved in ultrapure water, TAA is added after magnetic stirring, a hydrothermal reaction is conducted for 3-12 h, precipitates are washed three times through ultrapure water and three times through ethyl alcohol respectively, and normal-pressure drying is conducted for 3-24 h; and lamellar SnIn4S8 is grown on the surface of the SnIn4S8 in situ to form a heterojunction, namely an aqueous solution of Sn < 4 + > and acetic acid is prepared, Ag2S nanoparticles are added for ultrasonic treatment for 10-30 min, TAA is supplemented, hydrothermal treatment is performed for 3-6 h, and centrifugal collection is performed at the speed of 8000-10000 rpm. According to the method, the problems of high carrier recombination rate and insufficient visible light utilization of traditional photocatalysts such as TiO2g-C3N4 are solved, the efficiency retention rate is high after five cycles, XRD (X-Ray Diffraction) has no impurity peak, and the method is suitable for tetracycline antibiotic pollution treatment in water and has wide application prospects.

Provided is a tin-plated steel sheet which is more excellent in yellowing resistance in a steel sheet for containers having a film layer containing zirconium without being subjected to a conventional chromate treatment. A tin-plated steel sheet is adopted which has a steel sheet, a tin plating layer located on at least one surface of the steel sheet, and a film layer located on the tin plating layer and containing zirconium oxide and tin sulfide, in which an adhesion amount of the tin-based plating layer is 0.1 g / m2 or more and 15 g / m2 or less in terms of the amount of metal Sn, an adhesion amount of the zirconium oxide in the film layer is 0.2 mg / m2 or more and 50 mg / m2 or less in terms of the amount of metal Zr, and an adhesion amount of the tin sulfide is 0.1 mg / m2 or more and 5 mg / m2 or less in terms of the amount of sulfur.

This invention provides a method for improving the performance of copper indium gallium selenide (CIGS) and copper zinc tin sulfide selenide (CZTSSe) solar cells by controlling the internal ion migration of these cells through an applied bias voltage. This method applies a bias voltage of specific magnitude, direction, and duration to the CIGS and CZTSSe solar cells, driving the directional migration of mobile ions within the devices, thereby controlling the elemental distribution and interfacial chemical state. Specifically, Na ions are enriched at the heterojunction interface, while a small amount of Cd and In ions diffuse downwards to the absorber layer. This effectively passivates harmful defects at the interface and grain boundaries, reduces carrier recombination losses, improves carrier separation and transport characteristics, and ultimately enhances the photovoltaic performance and conversion efficiency of the devices. This invention offers a simple and highly controllable process, providing a new technical approach for the fabrication of high-performance CIGS and CZTSSe solar cells.

The invention provides a tin sulfide composite material and a preparation method and application thereof, and belongs to the technical field of energy storage materials, the tin sulfide composite material comprises a carbon material and SnSx uniformly packaged in the carbon material, and x is greater than or equal to 1 and less than or equal to 2. The preparation method comprises the following steps: dispersing tin salt, a sulfur source and alcohol-soluble resin in an organic solvent to obtain a mixed solution, and evaporating the mixed solution to dryness to obtain a mixed precursor; and calcining, grinding, washing and drying the mixed precursor in a protective gas atmosphere to obtain the tin sulfide composite material SnSx-C. According to the prepared tin sulfide composite material, under the separation action of the carbon material, the agglomeration phenomenon of tin sulfide in the calcination process can be effectively controlled, and the generated tin sulfide is uniformly packaged in the carbon material, so that the volume change of a lithium ion battery negative electrode material prepared from the tin sulfide composite material in the charging and discharging process is effectively relieved.

The invention relates to a tin sulfide-resorcinol formaldehyde ladder type photocatalyst with a bionic structure. The tin sulfide-resorcinol formaldehyde ladder type photocatalyst is composed of resorcinol formaldehyde microspheres and a (002) diffraction crystal face of tin sulfide. The synthetic method of the tin sulfide-resorcinol formaldehyde ladder type photocatalyst with the bionic structure comprises the following step: adding resorcinol formaldehyde microspheres in a solvothermal growth process of tin sulfide to obtain the tin sulfide-resorcinol formaldehyde ladder type photocatalyst with the bionic structure. The tin sulfide-resorcinol formaldehyde ladder type photocatalyst with the bionic structure is applied to preparation of methanol by photocatalytic reduction of CO2 under visible light. The tin sulfide-resorcinol formaldehyde ladder-type photocatalyst with the bionic structure has the beneficial effects that the photocatalytic performance is excellent, due to the formation of a ladder-type heterojunction, the ladder-type photocatalyst has stronger light absorption capacity and higher carrier separation efficiency, the photocatalyst can reduce CO2 into liquid fuel methanol under the irradiation of visible light, and the methanol yield is 45.6 micromoles g <-1 > h <-1 >.

The invention relates to a plurality of tin sulfide quantum dots having a mean atomic ratio of tin to sulfur of from 1.1:1 to 10.0:1, a mean diameter of 0.50 nm to 5.00 nm, and which are photoluminescent at wavelengths of (a) 360 to 470 nm, (b) 475 to 545 nm and (c) 550 to 740 nm.

The application relates to the technical field of optoelectronic materials and devices, and discloses a wide-spectrum-response photodetector and a preparation method thereof. The core composite photoactive layer of the photodetector comprises a germanium-tin alloy layer, a tin sulfide interface layer and a perovskite metasurface layer from bottom to top. The germanium-tin alloy layer with gradient tin content is prepared through magnetron sputtering, the tin sulfide interface layer is formed in situ through sulfuration during annealing, the narrow-band-gap perovskite metasurface layer with a subwavelength periodic structure is prepared through a solution method combined with a nanoimprint technology, and finally, the complete wide-spectrum photodetector is assembled. The tin sulfide interface layer realizes gradient band matching and interface defect passivation, the perovskite metasurface layer enhances the light field localization effect, and the two are coordinated to make the photodetector realize ultraviolet-visible-mid-infrared full-band response, and the photodetector is compatible with a silicon CMOS process, has excellent stability, is suitable for optical communication, multispectral imaging and the like scenes, and has important industrial application value.

This invention discloses an electrochemical sensor for detecting diopside (DOP) based on a kaolin-tin disulfide material and its construction method, belonging to the field of electrochemical analysis technology. The electrochemical sensor of this invention includes a base electrode, on which a kaolin-tin disulfide composite material and a molecularly imprinted polymer material with the template molecule removed are sequentially modified. First, tin disulfide is loaded onto the surface of kaolin to synthesize the kaolin-tin disulfide composite material, which is then drop-coated onto a glassy carbon electrode to obtain a KL-SnS2 / GCE electrode. Subsequently, using DOP as a template molecule and o-phenylenediamine as a functional monomer, the molecularly imprinted polymer is modified onto the KL-SnS2 / GCE electrode via electropolymerization to capture the target and generate electrochemical signal changes. The method of this invention features simple material synthesis, requires few reagents, and the sensor construction is easy to operate, low in cost, and capable of recognizing and detecting DOP.

The invention discloses a preparation method and application of an electrochemical luminescence sensor based on MXene quantum dots and tin disulfide, and belongs to the technical field of food safety detection. The preparation method of the electrochemical luminescence sensor comprises the following steps: preparing the Ti < 3 > C < 2 > T < x > quantum dot, preparing the Ti < 3 > C < 2 > T < x > quantum dot (at) SnS < 2 > and preparing the electrochemical luminescence sensor. An electrochemical luminescence group is synthesized by a high-temperature heating method and is used for constructing an electrochemical luminescence sensor; the manufacturing environment and the manufacturing method are easy to implement. According to the present invention, the Ti3C2Tx quantum dot (at) SnS2 is adopted as the electrochemical luminescence group to construct the electrochemical luminescence sensor so as to detect aflatoxin B1, and specifically, the S vacancy modified Ti3C2Tx quantum dot is introduced as the efficient electrochemical luminescence group so as to further construct the electrochemical luminescence sensing platform; the concentration of the aflatoxin B1 can be accurately and rapidly detected.

This invention discloses a sulfide solid electrolyte, its preparation method, and a battery, belonging to the field of battery material technology. The preparation of the sulfide solid electrolyte includes: thermally reacting the raw materials for the preparation of the sulfide solid electrolyte; tangentially filtering the material obtained after the thermal reaction; and spray-drying the solid obtained from the tangential flow filtration. The raw materials include a first precursor, a second precursor, and a solvent. The first precursor includes lithium sulfide, and the second precursor includes at least one selected from phosphorus pentasulfide, silicon sulfide, germanium sulfide, tin sulfide, sodium sulfide, potassium sulfide, ammonium sulfide, calcium sulfide, and arsenic sulfide. This method has a relatively simple process flow and operation, low energy consumption and cost, and high production efficiency, making it suitable for industrial production. The sulfide solid electrolyte obtained in this way is relatively soft, making it easier to contact the positive and negative electrodes under extrusion conditions during the further preparation of the battery, improving density, thereby facilitating electron transport and reducing losses.

A method for preparing defect-engineered hollow mesoporous copper-doped tin sulfide nanospheres relates to a method for preparing defect-engineered hollow mesoporous nanomaterials. The present invention aims to address the problems of existing metal sulfide nanoparticles, such as high electron-hole pair binding efficiency, poor photoresponse and catalytic performance, and uneven catalyst morphology and large size. The method includes the following steps: 1. Prepare a polyvinyl pyrrolidone solution; 2. Prepare a light yellow copper oxide suspension; 3. Prepare hollow mesoporous copper sulfide nanospheres; and 4. Prepare defect-engineered hollow mesoporous copper-doped tin sulfide nanospheres. The present invention is used to prepare defect-engineered hollow mesoporous copper-doped tin sulfide nanospheres.