5 results about "Cuprous thiocyanate" patented technology

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 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 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.