12 results about "Cuprous thiocyanate" patented technology

The invention discloses a trans-perovskite solar cell added with ammonium hypophosphite reduced cuprous thiocyanate as a hole transport layer and a preparation method thereof, and belongs to the technical field of perovskite solar cells. The perovskite solar cell structurally comprises transparent conductive glass, a hole transport layer, a perovskite light absorption layer, an electron transport layer, an interface modification layer and a metal electrode layer from bottom to top in sequence. The hole transport layer is a cuprous thiocyanate (CuSCN) film added with ammonium hypophosphite (NH4H2PO2), oxidation of CuSCN in air can be inhibited by adding NH4H2PO2, and the hole transport layer with extremely low content of cupric (Cu < 2 + >) impurities is prepared. Meanwhile, the interface contact between the hole transport layer and the perovskite light absorption layer is improved, the charge transport efficiency is improved, and the photoelectric conversion efficiency and the stability of the prepared perovskite cell are remarkably improved.

According to the 3, 6-dihydro-1, 2-oxazine compound and the synthesis method thereof, 1, 4, 2-dioxazole-5-ketone and 1, 3-conjugated diene are used as raw materials, commercially available cuprous thiocyanate is used as a catalyst, no additional oxidizing agent needs to be added in the reaction process, and 1, 4, 2-dioxazole-5-ketone, 1, 3-conjugated diene and 1, 4, 2-dioxazole-5-ketone are used as raw materials. 2, 2-dioxazole-5-ketone and a copper catalyst form a metal nitrogen-based intermediate which can be used as a self-oxidant to promote the reaction, so that the problems of poor substrate adaptability, low reaction activity, more byproducts and the like of a traditional cyclization method are solved; compared with harmful by-products (such as sulfur / nitrogen-containing compounds or heavy metal residues) generated by a traditional process, the environment friendliness of the method is remarkably improved, and meanwhile, the waste treatment cost is reduced, so that the comprehensive benefits of industrial production are effectively improved.

The invention provides a method for regulating and controlling crystallization of a cesium-lead-bromine-based optical active layer by using low-ignition-point nanocrystalline, and the method comprises the following steps: taking P-type low-ignition-point nanocrystalline cuprous thiocyanate as a modifier of an optical active layer-carbon electrode interface, so that the extraction and transmission efficiency of current carriers can be remarkably improved; the cuprous thiocyanate nanocrystals are embedded in the cesium-lead-bromine-based optical active layer in a form of gradient distribution from top to bottom to form a gradient hybrid film. The characteristic that cuprous thiocyanate is flammable at low temperature is utilized, micro-combustion occurs in the high-temperature annealing process, the generated micro-flame melting effect can induce grain boundary reconstruction and grain recrystallization, and therefore crystallization of the cesium-lead-bromine-based optical active layer is regulated and controlled. The embedding of the cuprous thiocyanate effectively improves the crystallinity of the cesium-lead-bromine-based optical active layer, the large-grain cesium-lead-bromine-based hybrid optical active layer is successfully prepared, and the stable and efficient carbon-based CsPbBr3 perovskite solar cell is assembled.

The preparation method comprises the following steps: preparing an electron transport layer on FTO glass, preparing an active absorption layer on the electron transport layer, carrying out cadmium chloride treatment on the active absorption layer to passivate defects, preparing a cuprous thiocyanate layer or a nickel oxide layer on the active absorption layer as a hole transport layer, and preparing a hole transport layer on the hole transport layer. When the hole transport layer is a nickel oxide layer, a cuprous thiocyanate layer is prepared on the hole transport layer, annealing is performed at 250 + / -5 DEG C for 10-30 min to diffuse copper to an FTO glass interface, and a transparent electrode is prepared on the surface of the cuprous thiocyanate layer. High-temperature annealing treatment is carried out after the cuprous thiocyanate layer is prepared, copper is fully diffused and doped to the active absorption layer, the P-type doping concentration is improved, an extremely narrow built-in electric field is obtained, the carrier collection narrowing effect is achieved, and the advantages of being high in stability, long in service life, high in response speed and high in efficiency are achieved. The invention has the advantages of simple structure, high responsivity, strong band selectivity, adjustable response band width, narrow full width at half maximum and the like.

The utility model belongs to the field of industrial waste liquid treatment and recovery, disclose is a kind of coking desulfurization waste liquid salt extraction system, including pretreatment system and first salt extraction system;The pretreatment system includes first reaction kettle and first filter device, the first reaction kettle with the first filter device is connected, for the impurity removal and filtration of coking desulfurization waste liquid;The first salt extraction system includes crystallization reactor and second filter device, the crystallization reactor includes feed inlet, liquid discharge port and solid discharge port, the feed inlet is used to put in the coking desulfurization waste liquid after impurity removal and copper sulfate solution, the solid discharge port with the second filter device is connected, and the second filter device is used to filter out cuprous thiocyanate. Cuprous thiocyanate reaction precipitation can be realized to filtration treatment, and the processing efficiency is improved.

The invention discloses a method for preparing cuprous thiocyanate by using copper fire refining slag, and relates to the technical field of copper fire refining. According to the method, the copper pyrogenic process refining slag meeting the specific content composition is subjected to chlorination leaching, the refining slag is leached through hydrochloric acid system chlorine salt to obtain the leachate containing the cuprous, then thiocyanate is added for a reaction, and the product cuprous thiocyanate can be obtained. The synthetic route provided by the invention is low in cost and high in product rate, the leaching slag can be returned to prepare nickel matte, and high-value utilization of the copper refining slag is realized.

The application discloses an infrared narrow-band photoelectric device and a preparation method thereof, and comprises the following steps: after an electron transport layer is prepared on FTO glass, an active absorption layer is prepared on the electron transport layer, the active absorption layer is treated by cadmium chloride to passivate defects, a cuprous thiocyanate layer or a nickel oxide layer is prepared on the active absorption layer as a hole transport layer, when the hole transport layer is the nickel oxide layer, a cuprous thiocyanate layer is prepared on the hole transport layer, copper is diffused to the FTO glass interface by annealing the cuprous thiocyanate layer at 250±5 DEG C for 10-30 min, and a transparent electrode is prepared on the surface of the cuprous thiocyanate layer. After the cuprous thiocyanate layer is prepared, high-temperature annealing treatment is carried out, copper is fully diffused and doped into the active absorption layer, the P-type doping concentration is improved, an extremely narrow built-in electric field is obtained, the carrier collection is narrowed, and the infrared narrow-band photoelectric device has the advantages of high stability, long service life, fast response speed, high responsivity, strong waveband selectivity, wide and adjustable response waveband, narrow half-height width and the like.

The invention provides a method for resource utilization of desulfurization waste liquid and sulfur foam and application, and relates to the technical field of chemical waste liquid treatment. Specifically, the method comprises the following steps: carrying out two-stage separation treatment on the desulfurization waste liquid and sulfur foam to obtain solid or molten elemental sulfur and separated clear liquid; separating the separated clear liquid into a first clear liquid and a second clear liquid; adding copper salt into the first clear liquid, and then carrying out solid-liquid separation to obtain cuprous thiocyanate and a first mother solution; sequentially carrying out concentration, cooling crystallization and solid-liquid separation on the second clear liquid to obtain ammonium thiocyanate and a second mother solution; concentrating the first mother solution and the second mother solution to obtain a concentrated salt solution; and the concentrated salt liquid and elemental sulfur are mixed and cured, and crude sulfur is obtained. The process method is simple and controllable, elemental sulfur and ammonium salt in the desulfurization waste liquid and sulfur foam are treated at the same time, the recycled crude sulfur can be subjected to resource utilization to prepare concentrated sulfuric acid, high-value by-products can be obtained at the same time, and good economic benefits and application prospects are achieved.

The invention relates to the technical field of antifouling paint, in particular to environment-friendly organosilicone fish skin bionic paint and a preparation method thereof.The environment-friendly organosilicone fish skin bionic paint is composed of a component A and a component B; the component A is prepared from the following raw materials in parts by weight: 70 to 75 parts of hydroxyl-terminated polydimethylsiloxane, 15 to 25 parts of xylene, 2 to 4 parts of silicon dioxide, 2 to 5 parts of ferric oxide, 0.5 to 1 part of nano cuprous oxide and 1 to 3 parts of cuprous thiocyanate; the component B is prepared from the following raw materials in parts by weight: 40 to 45 parts of trimethylsiloxy triethoxy silane, 10 to 12 parts of acetylacetone, 40 to 50 parts of xylene, 0.01 to 0.02 part of organic tin and 1 to 3 parts of modified perfluoropolyether. The environment-friendly organosilicone fish skin bionic coating prepared by the preparation method has excellent adhesive force and antifouling property.

The present application relates to wastewater treatment material technical field, specifically to a kind of nanometer cuprous thiocyanate, preparation method and application;The preparation method includes the following steps: S1, copper sulfate is stirred and dissolved in water and stirred uniformly, and blue transparent solution is obtained;S2, slowly drop sodium thiosulfate solution into blue transparent solution, and green transparent solution is obtained;S3, slowly drop sodium thiocyanate solution into green transparent solution and react to obtain white precipitate;S4, filter and collect white precipitate and repeatedly clean with anhydrous ethanol and distilled water to remove sodium thiocyanate impurities on the surface of white precipitate, then dry, grind to obtain nanometer cuprous thiocyanate.The application of nanometer cuprous thiocyanate prepared by the present application to adsorb tetracycline antibiotics in wastewater has the advantages of strong stability compared with copper sulfide, not easy to be oxidized by air, and can be recycled multiple times, so that resources are maximized.

This invention relates to a method for preparing 2-nitro-5-cyanothiobenzoic acid, comprising: (1) dissolving 5-amino-2-nitrobenzoic acid and an acid in a first reaction solvent, water, adding a nitrosating agent dropwise to the reaction system, reacting at a temperature of -20 to 20°C for 1 to 12 h, to obtain intermediate 3-carboxy-4-nitrobenzene diazonate M; the first reaction solvent is one or a mixture of water, acetonitrile, and ethanol; (2) reacting the intermediate 3-carboxy-4-nitrobenzene diazonate M obtained in step (1) with a thiocyanating agent and a catalyst in a second reaction solvent to undergo a nucleophilic substitution reaction, reacting at a temperature of -20 to 30°C for 1 to 24 h, to obtain 2-nitro-5-cyanothiobenzoic acid; the thiocyanating agent is selected from one or a mixture of cuprous thiocyanate, sodium thiocyanate, or potassium thiocyanate; the second reaction solvent is one or a mixture of water, acetonitrile, and ethanol. The raw materials of this invention are readily available, the cost is controllable, the reaction is mild, it is green and environmentally friendly, and it has high selectivity and high yield.

This application provides a smart thermochromic phase change microcapsule composite material for architectural glass, its preparation method, and its application, relating to the field of building energy-saving materials technology. The composite material comprises a phase change core material composed of tetradecyl alcohol, butyl stearate, and docosane; a composite wall material composed of urea-formaldehyde prepolymer, melamine prepolymer, and glyoxal-modified starch; and is prepared in conjunction with cuprous thiocyanate nanowires, a thermal conductivity modifier, and a transparent film-forming matrix. Through multi-component synergistic design, the thermochromic, phase change heat storage, and transparent film-forming properties are unified, significantly improving the composite material's thermal response sensitivity, heat storage stability, and photothermal regulation capability. Simultaneously, it improves the light transmittance, thermal insulation performance, and cycle life of architectural glass, and can be widely applied in the field of energy-saving smart architectural glass.