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 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 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 cadmium indium selenide / zinc copper sulfide nanocomposite material, a preparation method thereof, and an application in photocatalytic hydrogen production. The preparation method of the cadmium indium selenide / zinc copper sulfide comprises the following steps: (1) utilizing a solvothermal method to synthesize ternary sulfide zinc copper sulfide; (2) synthesizing an aqueous phase cadmium indium selenide quantum dot; (3) combining The cadmium indium selenide / zinc copper sulfide is obtained by compounding the ternary sulfide zinc copper sulfide and the cadmium indium selenide quantum dot. In addition, the cadmium indium selenide / zinc copper sulfide prepared by the present invention is used as a photocatalytic hydrogen production material, and its hydrogen production effect is significantly improved compared with zinc copper sulfide and cadmium indium selenide quantum dots. The amount of catalytic hydrogen production can reach 4623.2 μmol / g, and the material can maintain good cycle stability in the process of photocatalytic hydrogen production.

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 relates to a method for preparing monodisperse ternary chalcogenide AgInS2, which belongs to the technical field of nanometer material preparation. Monodisperse ternary chalcogenide AgInS2 nanocrystals were prepared by chemical solution method with alkylamine as surfactant. First, silver salt, indium salt, sulfur source and alkylamine are dispersed in a solvent to prepare a reaction solution, and then the prepared reaction solution is subjected to solvothermal treatment to obtain a monodisperse ternary chalcogenide AgInS2 nanometer with regular morphology. crystal. The method of the invention is simple and low in cost, and can synthesize monodisperse AgInS2 nano crystals on a large scale. The prepared AgInS2 nanocrystal is in the shape of a cuboid with a size of 17±0.5 nanometers, and can be self-assembled in a wide range to form a single-layer nano-superlattice.

The present invention provides CaTiO 3 @ZnIn 2 S 4 Nanocomposite with hollow CaTiO 3 Cuboid as the substrate, the ternary sulfide ZnIn 2 S 4 The nanosheets are uniformly coated on the outer layer of the cuboid. Compared with the prior art, the CaTiO provided by the present invention 3 @ZnIn 2 S 4 Nanocomposite materials, the raw materials used are easy to purchase, rich in resources and low in price, green and environmentally friendly, and the preparation method is simple, easy to operate, and convenient for large-scale production; the CaTiO prepared by the present invention 3 @ZnIn 2 S 4 As a photocatalyst, the nanocomposite material has significantly improved the hydrogen production, and the photocatalytic hydrogen production reached 125016.4 μmol / g within 6 hours, and maintained good cycle stability during the photocatalytic hydrogen production process.