33 results about "Ternary sulfide" patented technology

The invention relates to a method for preparing single-dispersive 3D sulfide CuInS2, which belongs to the field of nano-materials preparation. Chemical solution method is used to prepare the single-dispersive 3D sulfide CuInS2 nano-crystal by using alkylamine as the surfactant. First, cupric salt, indium salt, sulfer source and alkylamine are dispersed in the solvent to prepare the reaction solution, which is for solvent heat treatment to produce single-dispersive 3D sulfide CuInS2 nano-crystal with uniform shape. The invention is characterized in simple preparation, low cost and capable of synthersizing the single-dispersive 3D sulfide CuInS2 nano-crystal in large scale. And the prepared CuInS2 nano-crystal is of polyhedron shape, which is of 13-17nm in size and capable of self assembly in a wide range to produce single-layer nano-superlattice.

The invention discloses a nuclear shell nickel-cobalt-manganese ternary sulfide hollow spherical electrode material and a preparation method thereof, and belongs to the technical field of functional material preparation. According to the preparation method, isopropanol and polyhydric alcohols serve as a mixed solvent, and a solid spherical nickel-cobalt-manganese precursor compound is prepared through a solvothermal method; then, through vulcanization reaction, the solid spherical nickel-cobalt-manganese precursor compound is converted into the nuclear shell nickel-cobalt-manganese ternary sulfide hollow spherical material. The nuclear shell nickel-cobalt-manganese ternary sulfide hollow spherical material prepared through the preparation method is regular and uniform in shape and appearance and has large specific surface area, transmission and diffusion of ions and electrons are promoted, the effective contact area of electrolyte and the electrode material is enlarged, and many activesites are provided for electrochemical redox reaction; meanwhile, a nuclear shell hollow structure can effectively relieve volume expansion of the electrode material during charging and discharging,and therefore the electrochemical performance of the material is improved. The nuclear shell nickel-cobalt-manganese ternary sulfide hollow spherical electrode material has good electrochemical energystorage performance when serving as an electrode material to be applied to a supercapacitor.

The invention provides a nanometer composite material ZnIn2S4@PCN-224 based on ternary sulfide ZnIn2S4 and porphyrin MOFs (Metal-organic Frameworks). The nanometer composite material is prepared by the following steps: firstly dispersing activated PCN-224 into a N,N-dimethyl formamide-glycerol mixed solution, then adding ZnCl2, InCl3.4H2O and TAA and stirring for 0.5-1.5 hours; and performing heatinsulation treatment on a mixed suspension for 8-12 hours at a temperature of 160-200 DEG C, cooling to a room temperature, washing a solid product with distilled water and ethanol, performing centrifugal separation and precipitation, and drying to obtain solid powder, namely the ZnIn2S4@PCN-224. The nanometer composite material ZnIn2S4@PCN-224 provided by the invention has the benefits that theZnIn2S4 is loaded onto the porphyrin metal-organic framework PCN-224 through a solvo-thermal method, so that on one hand, organic pollutants can be better absorbed, and on the other hand, the separation efficiency of photo-generated electrons and holes is remarkably improved, and the photo-catalytic hydrogen production activity is significantly improved.

The invention relates to a method for preparing single-dispersive 3D sulfide AgInS2, which belongs to the field of nano-materials preparation. Chemical solution method is used to prepare the single-dispersive 3D sulfide AgInS2 nano-crystal by using alkylamine as the surfactant. First, cupric salt, indium salt, sulfer source and alkylamine are dispersed in the solvent to prepare the reaction solution, which is for solvent heat treatment to produce single-dispersive 3D sulfide AgInS2 nano-crystal with uniform shape. The invention is characterized in simple preparation, low cost and capable of synthersizing the single-dispersive 3D sulfide AgInS2 nano-crystal in large scale. And the prepared CuInS2 nano-crystal is of polyhedron shape, which is of 17+ / -0.5nm in size and capable of self assembly in a wide range to produce single-layer nano-superlattice.

The invention relates to a low cost solution method for preparing a solar cell absorption layer material Cu2ZnSnS4 and belongs to the technical field of solar cell materials and devices. The method includes that firstly a binary or ternary sulfide hybrid thin film containing copper and tin is deposited on the substrate by means of successive ion layer absorption deposition, then a layer of a zinc sulfide thin film is deposited on the binary or ternary sulfide hybrid thin film containing copper and tin by means of chemical bath to obtain a precursor thin film, and the precursor thin film is subjected to a certain annealing process in the sulfur atmosphere to obtain the Cu2ZnSnS4 absorption layer. The low cost solution method for preparing the solar cell absorption layer material Cu2ZnSnS4 has the advantages that the raw material source is rich, the raw material cost is low, complicated devices are not required, the preparation process is simple, the preparation cost is low, and the components and the thickness of the thin film are controllable.

The invention belongs to the technical field of synthesis of inorganic materials, and particularly provides a preparation method of a Ce-doped Ni-Fe-Ce ternary sulfide oxygen evolution catalyst. The method is characterized by directly taking metal salts including Ni(NO3)2.6H2O, Fe(NO3)3.9H2O and Ce(NO3)3.6H2O as raw materials, taking water as a solvent, and preparing the ternary compound sulfide catalyst by using a simple two-step method including coprecipitation and a hydrothermal method. According to the preparation method, any template agents or auxiliary additives do not need to be added during reacting; an obtained product does not need to be calcined and annealed again, and can be directly used as a catalyst; the prepared catalyst material is used for catalyzing the cracking of waterto generate oxygen; an environment-friendly and low-cost method is provided for oxygen evolution catalysis material development which is urgently needed at present; and a selectable catalyst materialis also provided for development of fuel cells.

The invention discloses a preparation method of a ternary copper-based sulfide semiconductor semiconductor nanomaterial. The preparation method of the ternary copper-based sulfide semiconductor semiconductor nanomaterial comprises following steps: solvothermal method is adopted to prepare a nanometer scale ternary copper antimony sulfides of different stoichiometric ratios, an inorganic copper salt, an inorganic antimony salt, and a sulfur source are taken as raw material, middle temperature pressurization one-step reaction is adopted to prepare the ternary sulfide powder. The operation is simple; few steps are needed; the raw materials are cheap and easily available; the applicability on selection of different raw materials is high; in the preparation process, the product is easily prepared; product particle size is small; crystal grain growth is avoided; in the reaction process, preparation failure caused by explosive is avoided; the preparation method is beneficial for industrial large scale production; yield is as high as 86.2%; product phase purity is high; impurities are few; purity can be as high as 97.8%; the universality is high; technology is stable; production stabilityis high; a defect in the prior art that long time high temperature treatment is needed is avoided; and the prepared nanometer ternary sulfur antimony copper material can be widely used in the energy fields of lithium battery, thermoelectricity, and photoelectricity.

The invention belongs to the field of luminescent materials, and discloses an alkaline earth-rare earth ternary sulfide luminescent material and a preparation method thereof, the chemical general formula of the luminescent material is AY2-xS4:Erx<3+>,My; wherein A is Sr or Ba, M is at least one of Ag, Au, Pt, Pd and Cu, x is greater than 0 and less than or equal to 0.5, y is molar ratio of AY2-xS4:Erx<3+>, and y is greater than 0 and less than or equal to 1*10<-2>. By introduction of M metal particles, fluorescent powder luminescence can be increased by doping the M metal particles, and luminescence efficiency of the AY2-xS4:Erx<3+>, My luminescent material can be improved greatly in same excitation conditions.

The invention relates to a research about two novel red kinds of phosphor powder and a synthetic method thereof. The luminescent material uses quaternary sulfur oxide and ternary sulfide as substrates and uses rare earth ions or transition metal ions as an activator, and the general formula is as follows: (Ba1-m-n-kSrmCanMgk) 2ZnS3: xRE, yM (0<=m<=1.0, 0<=n<=1.0, 0<=k<=1.0, 0<=m+n+k<=1.0, 0<=x<=0.05, 0<=y<=0.05) and Ba1-m-n-kSrmCanMgkZnOS: xRE, yM, (0<=m<=1.0, 0<=n<=1.0, 0<=k<=1.0, 0<=m+n+k<=1.0, 0<=x<=0.05, 0<=y<=0.05), wherein RE is one or two of Y3+, la3+, Ce3+, Pr3+, Nd3+, Sm3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+ and Lu3+; and M is one or two of Mn2+, Cu2+, Cu+, Pb2+ and Bi3+. The synthetic method comprises the following steps of accurately weighing BaSO4, carbon powder and ZnS or ZnO according to chemometry, putting the fully-mixed raw materials into a crucible, calcining for 2-4 hours at 900-1000 DEG C under nitrogen or argon atmosphere, and naturally cooling to room temperature. The method for synthesizing quaternary sulfur oxide and ternary sulfide in one step with carbon thermal reduction has the advantages of simple operation, time saving, environment pollution avoidance and the like.

The invention relates to the technical field of photocatalyst preparation and pesticide degradation, in particular to a method for synthesizing a regular-morphology unitary, binary or ternary sulfide-TiO2 composite nanostructure in a one-pot mode through a solvothermal method and application thereof in photocatalytic degradation of organic pesticides. Because the raw materials not only can providea titanium source, but also can provide a sulfur source, the sulphide-TiO2 composite nanostructure with regular morphology is prepared by adopting a solvothermal method one-pot synthesis technology.The sulphide-TiO2 composite nano-structure prepared by the preparation method disclosed by the invention has the advantages that active species are generated through optical excitation; toxic pesticides such as .OH and .O2- and the like can be decomposed into small molecules or non-toxic compounds, residues of the toxic pesticides are effectively reduced, the production safety is improved, variousorganic pesticides can be degraded, the broad spectrum property is high, the effect is good, and good application prospects are achieved in the aspects of pesticide greening, low residues and the like.

The invention relates to a novel sulfur-containing lithium ion battery cathode material, which is a ternary sulfide and has the molecular formula of LiGaS2 (Li is lithium, Ga is gallium and S is sulfur). The novel sulfur-containing lithium ion battery cathode material is 190.39 mAh / g is theoretical specific capacity, is about 3.50 V in lithium intercalation voltage and reaches 665.61 W*h / kg in theoretical energy density as a lithium ion battery cathode material. The LiGaS2 material is excellent in structural stability during a lithium intercalation / extraction process, thereby ensuring excellent charge-discharge rate capability. The LiGaS2 is expected for being used as a cathode material in a lithium ion battery, and especially being used in an all-solid lithium ion battery prepared from a solid electrolyte containing sulfur. The LiGaS2 has an important significance since no excellent cathode material is matched with the solid electrolyte.

The invention discloses a preparation method of sulfide complete water splitting catalyst with a three-dimensional co-continuous macroporous heterostructure. The preparation method comprises the following steps: preparing nickel-cobalt hydroxide macroporous gel; and cutting up the nickel-cobalt hydroxide macroporous gel, carrying out heat treatment in an air atmosphere to obtain a NiCo2O4 block, and vulcanizing the NiCo2O4 block by adopting sublimed sulfur to obtain the Ni-Co-S ternary sulfide capable of being used as the complete water splitting catalyst. The stable three-dimensional co-continuous macroporous heterostructure sulfide complete water splitting catalyst is prepared in a mode of combining a sol-gel method and a gas phase vulcanization method, and the three-dimensional co-continuous macroporous heterostructure sulfide complete water splitting catalyst not only has a unique macroporous skeleton morphology, but also has relatively high catalytic performance, and has very high stability in a long-time catalytic reaction under relatively high current.

The invention relates to rare-earth-doped ternary sulfides. The rare-earth-doped ternary sulfides may be used as an active material for mid-wave infrared and long-wave infrared lasers and amplifiers. Methods for producing laser materials including rare-earth-doped ternary sulfides, as well as lasers and amplifiers incorporating the laser materials, are also provided.

The invention discloses a micro-nano type hollow-structured double-metal catalyst and a preparation method and application thereof and belongs to the technical field of catalysts. The catalyst is molybdenum-nickel ternary sulfide, the active components of the catalyst is molybdenum sulfide and nickel sulfide, the mole ratio of molybdenum to nickel is (1-1.5):(1-3), and the mass fraction of the molybdenum and the nickel in the catalyst is 25-45%. The micro-nano type hollow-structured double-metal catalyst is applicable to heavy oil hydrocracking. The micro-nano type hollow-structured double-metal catalyst has the advantages that by the hollow structure, more exposed edge active sites can be obtained by using fewest metal active components, and accordingly metal raw material utilization rateis increased, cost is saved, and the high-activity and low-cost catalyst is provided for heavy oil suspended bed hydrocracking.

The invention belongs to the technical field of semiconductor photocatalytic materials, and particularly relates to a nitrogen-doped PHCS-Zn2In2S5 composite photocatalyst as well as a preparation method and application thereof. A one-step hydrothermal synthesis method is provided by improving a synthesis method of a visible light response ternary sulfide ZnmIn2Sm + 3 catalyst, Zn2In2S5 is self-grown on nitrogen-containing hollow glucose microspheres, modification of the ternary sulfide Zn2In2S5 is realized, and the nitrogen-doped PHCS-Zn2In2S5 nano composite material is prepared and serves as a composite photocatalyst, so that the nitrogen-doped PHCS-Zn2In2S5 nano composite material can be used for preparing the visible light response ternary sulfide ZnmIn2Sm < + 3 > / ZnmIn2Sm < + 3 > / ZnmIn2Sm < + 3 > / ZnmIn2Sm < + 3 > / ZnmIn2Sm < + 3 > / Zn2In2S5 composite photocatalyst. The method is used for efficiently degrading phenol wastewater and bisphenol A wastewater and generating H2O2 in situ. The composite photocatalyst PHCS-Zn2In2S5 prepared by the preparation method disclosed by the invention is stable in performance and low in cost, and has a good market application prospect. The composite photocatalyst PHCS-Zn2In2S5 disclosed by the invention lays a foundation for application in the field of environmental improvement.

The invention relates to a research about two novel red kinds of phosphor powder and a synthetic method thereof. The luminescent material uses quaternary sulfur oxide and ternary sulfide as substrates and uses rare earth ions or transition metal ions as an activator, and the general formula is as follows: (Ba1-m-n-kSrmCanMgk) 2ZnS3: xRE, yM (0<=m<=1.0, 0<=n<=1.0, 0<=k<=1.0, 0<=m+n+k<=1.0, 0<=x<=0.05, 0<=y<=0.05) and Ba1-m-n-kSrmCanMgkZnOS: xRE, yM, (0<=m<=1.0, 0<=n<=1.0, 0<=k<=1.0, 0<=m+n+k<=1.0, 0<=x<=0.05, 0<=y<=0.05), wherein RE is one or two of Y3+, la3+, Ce3+, Pr3+, Nd3+, Sm3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+ and Lu3+; and M is one or two of Mn2+, Cu2+, Cu+, Pb2+ and Bi3+. The synthetic method comprises the following steps of accurately weighing BaSO4, carbon powder and ZnS or ZnO according to chemometry, putting the fully-mixed raw materials into a crucible, calcining for 2-4 hours at 900-1000 DEG C under nitrogen or argon atmosphere, and naturally cooling to room temperature. The method for synthesizing quaternary sulfur oxide and ternary sulfide in one step with carbon thermal reduction has the advantages of simple operation, time saving, environment pollution avoidance and the like.

The invention relates to the preparation and application of a nitrogen-doped ternary sulfide electrocatalyst material, belonging to the technical field of catalysts. The method comprises the following steps: using hydrochloric acid, absolute ethanol and deionized metal substrate to ultrasonically remove oxides and impurities on the surface; adding transition metal precursor salt and soluble salt of tungsten or molybdenum to deionized water, stirring and dissolving; vertically Put it directly into the hydrothermal kettle, then add the above solution to carry out hydrothermal reaction; wash the product, then put it into the hydrothermal kettle, add the solution containing sulfur source and nitrogen source to carry out sulfur nitriding reaction; the obtained product is deionized water After washing and drying, a nitrogen-doped ternary sulfide electrocatalyst is obtained. The preparation of the granules dispenses with the introduction of the substrate. In-situ nitrogen doping was performed during the preparation of the X‑M‑S catalyst, which enhanced its catalytic performance as a catalyst for electrolysis of water.

The invention belongs to the technical field of synthesis of inorganic materials, and particularly provides a preparation method of a Ce-doped Ni-Fe-Ce ternary sulfide oxygen evolution catalyst. The method is characterized by directly taking metal salts including Ni(NO3)2.6H2O, Fe(NO3)3.9H2O and Ce(NO3)3.6H2O as raw materials, taking water as a solvent, and preparing the ternary compound sulfide catalyst by using a simple two-step method including coprecipitation and a hydrothermal method. According to the preparation method, any template agents or auxiliary additives do not need to be added during reacting; an obtained product does not need to be calcined and annealed again, and can be directly used as a catalyst; the prepared catalyst material is used for catalyzing the cracking of waterto generate oxygen; an environment-friendly and low-cost method is provided for oxygen evolution catalysis material development which is urgently needed at present; and a selectable catalyst materialis also provided for development of fuel cells.

The invention provides a perovskite solar cell based on a transition metal sulfide / ternary sulfide quantum dot composite hole transport layer and a preparation method, specifically, firstly adopting a liquid phase method to deposit a perovskite on the surface of an electron transport layer supported by a conductive glass Mineral light-absorbing layer, then spin-coating quantum dot composite hole transport layer, and finally blade-coating carbon electrode to assemble a perovskite solar cell. The invention introduces ternary sulfide quantum dots to passivate the surface defects of transition metal sulfide quantum dots, obtains a quantum dot composite hole layer with high hole conductivity and energy level tunability, and effectively reduces the perovskite layer and carbon The energy level difference between electrodes enhances interfacial contact and hole extraction and mobility, while the anchoring effect of sulfur in composite quantum dots and free lead ions on the perovskite surface passivates interface defects, reduces nonradiative recombination, and realizes calcium Improvement in efficiency and stability of titanite solar cells. The preparation method of the invention is simple and feasible, the material improvement space is large, and the invention has a good application prospect.

The invention provides a cadmium indium selenide / copper zinc sulfide nano composite material, a preparation method thereof and application of the cadmium indium selenide / copper zinc sulfide nano composite material in photocatalytic hydrogen production. The preparation method of the indium cadmium selenide / copper zinc sulfide comprises the following steps: (1) synthesizing ternary sulfide copper zinc sulfide by using a solvothermal method; (2) synthesizing water-phase cadmium indium selenide quantum dots; and (3) compounding the ternary sulfide copper zinc sulfide with the cadmium indium selenide quantum dots to obtain the cadmium indium selenide / copper zinc sulfide. Besides, when the cadmium indium selenide / copper zinc sulfide prepared by the method is used as a photocatalytic hydrogen production material, the hydrogen production effect is obviously improved compared with that of copper zinc sulfide and cadmium indium selenide quantum dots, the photocatalytic hydrogen production amount within 6 hours can reach 4623.2 mu mol / g, and the material can keep good cycle stability in the photocatalytic hydrogen production process.

The invention discloses a nuclear shell nickel-cobalt-manganese ternary sulfide hollow spherical electrode material and a preparation method thereof, and belongs to the technical field of functional material preparation. According to the preparation method, isopropanol and polyhydric alcohols serve as a mixed solvent, and a solid spherical nickel-cobalt-manganese precursor compound is prepared through a solvothermal method; then, through vulcanization reaction, the solid spherical nickel-cobalt-manganese precursor compound is converted into the nuclear shell nickel-cobalt-manganese ternary sulfide hollow spherical material. The nuclear shell nickel-cobalt-manganese ternary sulfide hollow spherical material prepared through the preparation method is regular and uniform in shape and appearance and has large specific surface area, transmission and diffusion of ions and electrons are promoted, the effective contact area of electrolyte and the electrode material is enlarged, and many activesites are provided for electrochemical redox reaction; meanwhile, a nuclear shell hollow structure can effectively relieve volume expansion of the electrode material during charging and discharging,and therefore the electrochemical performance of the material is improved. The nuclear shell nickel-cobalt-manganese ternary sulfide hollow spherical electrode material has good electrochemical energystorage performance when serving as an electrode material to be applied to a supercapacitor.

The invention discloses an alkali metal-rare earth ternary sulfide nano luminescent material, a preparation method and application thereof. According to the invention, reaction raw materials involved in the method can be directly purchased from a reagent company, and further purification is not needed; a series of rare earth doped alkali metal-rare earth ternary sulfide nano-particles can be synthesized by adopting the method, wherein the synthesis conditions are easy to control, and the synthesized nano-particles are uniform in size and morphology and good in dispersity; and the preparation process is simple, economical, environment-friendly and convenient to operate, and has relatively high practicability.

The invention discloses a preparation method of a nano photocatalyst. The preparation method comprises the following steps of 1) preparing a ternary sulfide nano crystal; 2) modifying the surface of the ternary sulfide nano crystal; 3) preparing a photocatalyst; and 4) performing ion exchange. The invention further discloses a nano photocatalyst prepared according to the preparation method. The nano photocatalyst disclosed in the invention can respond to a broad range of visible light and has high photocatalystic activity and high stability.

The invention discloses a preparation method of nano photocatalyst, which includes the following steps: 1) preparation of ternary sulfide nanocrystals, 2) surface modification of ternary sulfide nanocrystals, 3) preparation of photocatalyst, 4) ion exchange ; The present invention also discloses a nanometer photocatalyst prepared according to the preparation method; the nanometer photocatalyst disclosed by the invention has a wide visible light response range, high photocatalytic activity and good stability.

The invention belongs to the field of material preparation, and particularly relates to a graphene composite amorphous metal-based sulfide electrode material and a preparation method thereof. The method comprises the steps of solvothermal preparation, centrifugal purification and freeze drying. The tin or antimony-based alloying reaction material with the advantages of high theoretical capacity and low cost is adopted, a low-temperature solvothermal method is adopted, and heterogeneous elements are added to obtain the amorphous ternary sulfide material, so that the problem of volume expansion of the alloying material in the reaction process can be greatly improved, and the electrochemical performance is improved.

The invention provides a CuIn containing sulfur defects 5 S 8 The preparation method of sulfide includes the following steps: reacting indium chloride tetrahydrate, copper acetate monohydrate and thioacetamide in an organic solvent to obtain ternary CuIn 5 S 8 Ultra-thin sheet; the ternary CuIn 5 S 8 The ultra-thin sheet is rapidly calcined to obtain CuIn containing sulfur defects. 5 S 8 sulfide. This application also provides a CuIn containing sulfur defects prepared above. 5 S 8 Sulfide visible light catalytic reduction of CO 2 Methods. Experimental results show that ternary CuIn containing sulfur defects 5 S 8 Sulfide has a higher selectivity for visible light catalytic reduction of carbon dioxide into methane, which can convert CO2 into methane under visible light irradiation. 2 Almost 100% catalytic reduction to methane, and CH 4 The production rate is approximately 8.7 μmol·g ‑1 ·h ‑1 .