32 results about "Tin(II) sulfide" patented technology

The invention discloses a wide-range spectral absorption perovskite photovoltaic material and a preparation method thereof. The method comprises: adding an additive to a perovskite reactant to form an inorganic particle hybrid perovskite precursor solution, and then The precursor solution is spin-coated on a substrate covered with an electron transport material, and a composite perovskite light-absorbing layer film is formed after heat treatment at 150° C.; wherein the additives include halides, carbon disulfide, zirconia nanoparticles, and n-hexylamine. Since the light-absorbing layer of the perovskite solar cell in this scheme uses nano-cuprous sulfide or stannous sulfide materials generated by chemical reactions and zirconia nanoparticles to co-dope the perovskite light-absorbing layer, the light-absorbing range of the perovskite layer is expanded. The battery efficiency is increased from 6% to more than 10%, and the method is simple and effective, and the cost is saved. Therefore, the method of the present invention for improving the performance of the light-absorbing layer of the perovskite solar cell has extremely high industrial application value.

A tin sulfide thin film solar cell comprises a conductive glass / metal gate electrode and a metal back electrode and is characterized in that uni-junction or multi-junction n-SnS2 or the composite thinfilm thereof and p-SnS or the composite thin film thereof are formed between the conductive glass / metal gate electrode and the metal back contact. The composite means the tin sulfide obtained by doping tin bromide (n-SnS2) and stannous sulfide (p-SnS). The solar cell is rich in material sources, safe and environment-friendly, convenient in processing and effectively solves the collection problemof current carriers with the aid of such electrodes as metallic tin by using SnS2 and SnS, which have the same components and different conduction types and liable to realize energy gap match, heterojunction transition and good transport property of the current carriers.

The invention discloses a method for preparing nano-stannous sulfide from tin-containing electronic waste in one step. The method is to mix the tin-containing electronic waste with an additive composed of calcium sulfide and silicon dioxide to make agglomerates, and place the Reduction roasting is carried out at 750-900°C in a neutral atmosphere, and the roasted volatiles enter a weakly reducing atmosphere for reduction roasting at 450-700°C to obtain nano-stannous sulfide powder. The method uses tin-containing electronic waste as a raw material to efficiently recover tin and prepare a high-purity nano-tin sulfide powder material, which not only realizes waste utilization, but also has high economic added value, and the method is simple to operate, low in production cost, and environmentally friendly. Meet the requirements of industrial production.

A drug delivery system using a tin(II) sulfide nanosheet as a vector and a preparation method therefor. The drug delivery system comprises the tin(II) sulfide nanosheet, folic acid-modified polyethylene glycol that coats the surface of the tin(II) sulfide nanosheet, and an anticancer drug loaded on the tin(II) sulfide nanosheet. The drug delivery system has both the photothermal effect of the tin(II) sulfide nanosheet and the chemotherapeutic effect of a chemotherapeutic drug.

The present invention relates to a kind of graphitic carbon nitride / tin sulfide (g-C 3 N 4 / SnS) nano-heterojunction synthesis method, comprising the following steps: 1) taking a certain amount of urea and putting it into a corundum crucible; 2) putting the corundum crucible filled with urea into a muffle furnace for calcination at a certain temperature, Get g‑C 3 N 4 ; 3) Weigh a certain amount of SnCl 2 2H 2 Dissolve O in deionized water, stir well and add a certain amount of g‑C 3 N 4 , continue to stir; 4) Weigh a certain amount of Na 2 S·9H 2 O dissolved in deionized water and added dropwise to g‑C 3 N 4 and SnCl 2 5) obtain the final product after separation, washing and drying. The synthesis technique of the present invention is simple, and g-C 3 N 4 In situ growth of SnS nanoparticles on nanosheets, the g‑C 3 N 4 / SnS nano-heterojunction has the characteristics of mesoporous structure and large specific surface area (80‑90m 2 / g), has excellent photocatalytic performance under visible light conditions.

The invention discloses a stannous sulfide carbon composite material, a preparation method and application thereof. The preparation method of the present invention adopts tin tetrachloride as a tin source, sucrose as a carbon source, cetyltrimethylammonium bromide and polyvinylpyrrolidone as active agents, oxalic acid as a template, and prepares tin dioxide carbon in a hydrothermal environment. The composite material is further reacted at high temperature in a tube furnace to form a tin-carbon composite material, and the tin-carbon composite material is further mixed with sulfur, and then calcined under the protection of an inert atmosphere to obtain a stannous sulfide-carbon composite material. The raw material price of the present invention is low, and the composite material structure is composed of primary nanoparticles to form secondary microparticles, which can shorten the diffusion path of sodium ions in the material by using primary nanoparticles. In addition, the carbon skeleton composed of secondary microparticles has a porous structure. On the one hand It can not only improve the conductivity of the stannous sulfide, but also effectively inhibit the volume change in the electrochemical reaction of the stannous sulfide, and maintain the structural stability of the electrode.

Disclosed is a stannous sulfide nanometer photo-thermal agent, comprising stannous sulfide quantum dots. The preparation method therefor comprises: grinding a stannous sulfide block for 20-60 minutes, and then dispersing same in an organic solvent to obtain a dispersion; sonicating the dispersion in a water bath at 5ºC-10ºC for 8-12 hours so as to obtain a sonicated dispersion; and centrifuging the sonicated dispersion, and then collecting a precipitate and drying same to obtain stannous sulfide quantum dots. The stannous sulfide nanometer photo-thermal agent has a distinct photo-thermal effect, a high chemical stability and a low toxicity; the raw materials thereof are abundant, the price thereof is cheap, and the preparation method therefor is simple; and same has a broad application prospect in the field of photo-thermal therapy. The preparation method uses raw materials which are easy to obtain, has a sample preparation process, and easily achieves large-scale production.

The invention discloses a preparation method of near-infrared stannous sulfide nano-particles. According to the method, phenanthroline tin is adopted as a tin resource, dimethyl disulfide is adopted as a sulfur resource, and in a surface modification agent, the stannous sulfide nano-particles with near-infrared fluorescence are prepared in one step. According to the preparation method of the near-infrared stannous sulfide nano-particles, the operation step is simple, the adopted agents are few, the cost is low, and implementation is easy; the whole preparation process meets the requirements ofgreen chemistry and is safe and environmentally friendly; the prepared stannous sulfide nano-particles have the advantages of being good in monodispersity, high in near-infrared fluorescence intensity, good in stability and the like.

The invention discloses a preparation method, product and application of a two-dimensional ultrathin stannous sulfide nanosheet. The preparation method includes: connecting the stannous sulfide block to the electrode with a conductive copper tape as a working electrode, the platinum sheet as a counter electrode, and Na 2 SO 4 The solution is used as the electrolyte, and the stannous sulfide block and the platinum sheet are immersed in the electrolyte; the negative voltage and the positive voltage are alternately applied to the working electrode repeatedly; the electrolyte containing the stannous sulfide flakes is vacuum filtered; the stannous sulfide flakes are washed and dried. Dispersed in a dispersing solvent, subjected to ultrasonic crushing, centrifuged, and freeze-dried to obtain two-dimensional ultrathin stannous sulfide nanosheets. The average thickness of the two-dimensional ultrathin stannous sulfide nanosheets is not more than 6nm, which has superior electrochemical performance and good formic acid selectivity when applied to the electroreduction of carbon dioxide. The technical scheme of the invention has the advantages of simplicity and high efficiency, low cost, controllable product quality, good reproducibility, and suitability for large-scale production.

The invention discloses a method for preparing a stannous sulfide composite negative electrode material, which includes preparing a mixed solution, preparing a mixed solution hydrogel, and preparing a finished material. The method of the invention can effectively improve the cycle life of the stannous sulfide material, and the preparation cost is low. The preparation process is simple, and can also be extended to the production and preparation of other tin-based composite negative electrode materials.

The invention discloses a preparation method of a tin sulfide nanosheet. The preparation method comprises the following steps: uniformly mixing tin powder with sulfur powder in a mole ratio of 1 to 1 and pressing the mixed powder to form a press cake with density of 4-5g / cm<3>; putting the press cake in a graphite pot and putting the graphite pot in a copper pot anode in a reaction chamber of a direct-current arc discharge device, wherein a tungsten bar cathode and the copper pot anode are placed oppositely; filling argon after vacuumizing the reaction chamber and filling a copper pot with circulating cooling water, wherein the pressure of argon is 5-30kPa; in the discharge process, maintaining the voltage at 20-40V and the current at 80-120A and reacting for 3-5 minutes; then carrying out passivation for 6-8 hours in an argon environment and collecting black powder in the graphite pot, thus obtaining the tin sulfide nanosheet. The preparation method has the advantages of simple preparation process, high yield and high sample purity.

The invention discloses a stannous sulfide / gold nanoparticle composite and its preparation method and application. The preparation method is: mechanically stripping the stannous sulfide material, the thickness of the product is 50-100 nm, the size is several microns to more than ten microns, and the Standby after annealing; drop chloroauric acid aqueous solution onto the surface of mechanically stripped tin sulfide, deposit for 2‑5 min, blow off excess liquid with nitrogen, and react for 2‑5 at 120‑150 °C; after the reaction, quickly take out the sample, The obtained gold nanoparticles are assembled in the self-orientation of stannous sulfide, and the obtained gold nanoparticles have a size of tens of nanometers and good crystallinity, and have broad and important application prospects in the fields of photodetection devices, biosensing and the like.

The invention provides a method for synthesizing stannous sulfide in a low-temperature liquid phase, which comprises the following steps: firstly, adding deionized water into polyvinylpyrrolidone, stirring and dissolving to obtain a polyvinylpyrrolidone solution. Next, weigh the sulfur source, anhydrous SnCl 2 , add dropwise hydrazine hydrate and ammonia water and stir. The sulfur source includes one of high-purity sulfur and thiourea. The polyvinylpyrrolidone solution was then added to the solution prepared in the previous step and placed in a reaction vessel to obtain a solid-liquid mixture, which was then put into a vacuum oven for reaction at a reaction temperature of 50° C. and a reaction time of 24 hours. Finally, the reaction vessel was taken out, the solid-liquid mixture was cooled and placed in a centrifuge tube, washed and centrifuged alternately with deionized water and absolute ethanol to obtain SnS crystal grains.

The invention discloses a preparation method for synthesizing three-dimensional stannous sulfide micro-flowers with a quaternary ammonium salt auxiliary complexing agent, which belongs to the technical field of inorganic nanomaterial preparation; the step is to mix tin tetrachloride and complexing agent in a certain proportion under stirring Dissolve in deionized water to form a clear solution containing thiostannate complex ions, then add morphology and structure modifiers and sulfur sources under stirring, and transfer the reaction system to a stainless steel reactor lined with polytetrafluoroethylene placed in a drying oven, hydrothermally reacted at a certain temperature for a certain period of time, then naturally cooled to room temperature, rinsed the obtained precipitate with deionized water and absolute ethanol, centrifuged, and dried in a vacuum drying oven; after drying The sample is placed in a tube furnace, and calcined under nitrogen protection to obtain tin sulfide (SnS) micron flowers; the synthetic method of the present invention has the advantages of simple technique, low cost, and high yield, and the synthetic stannous sulfide The size and shape of micron flowers are relatively uniform, with an average diameter of 5 μm to 18 μm.

The invention discloses a preparation method of stannous sulfide. The preparation method comprises the following steps: uniformly mixing metallic tin powder with sublimate powdered sulfur, adding mixed powder into an atmosphere reaction furnace with the temperature of 650 DEG C-1000 DEG C and performing a quick reaction on tin and sulfur to obtain liquid tin sulfide; controlling the furnace temperature at 650 DEG C-1000 DEG C, continuously preserving the temperature for 0.5-4h, distilling to remove redundant sulfur in the tin sulfide product and cooling to obtain the high-purity stannous sulfide. The method is simple in process, low in cost, high in synthesis speed of the product, high in product yield and high in purity; less waste residues and waste gas are generated, and the productionprocess is green and environmentally-friendly, therefore, the method has a relatively good industrial application prospect.