16 results about "Silver iodide" patented technology

This invention discloses a quantitative method and apparatus for assessing the catalytic potential of silver iodide in artificial rain and snow enhancement based on cloud physics parameters, belonging to the field of atmospheric science and technology. The method includes: calculating and normalizing the total nucleation ratio of silver iodide particles to obtain a normalized nucleation conversion rate score; calculating the ice crystal potential ratio and supersaturation relaxation timescale that can effectively participate in the bergiron process after catalysis; calculating and normalizing the effective conversion time based on the ice crystal potential ratio and supersaturation relaxation timescale to obtain a normalized conversion rate score; calculating and normalizing the effective liquid water pathway to obtain a normalized liquid water content score; and weighted summing the normalized nucleation conversion rate score, normalized conversion rate score, and normalized liquid water content score to obtain a comprehensive catalytic potential score characterizing the quantitative results of the catalytic potential. This invention enables the quantitative assessment of the catalytic potential of cold clouds.

The invention discloses a waste treatment method in a radiopharmaceutical production process, which comprises the following steps: adding a DNA-silver nano composite material into wastewater, so that silver ions are combined with iodine-131 to generate stable silver iodide crystals, thereby fixing radionuclides in the wastewater; the risk of iodine-131 volatilization is reduced by adopting a vacuum evaporation process, and water is ensured to be separated from radioactive pollutants; condensate water is discharged after reaching the standard through detection, and concentrated waste is subjected to curing treatment; by mixing concentrated waste with cement and adding a silicate additive, the physical stability and chemical inertness of a solidified body are enhanced, and the possibility of leakage is reduced; and finally, safely storing the cured concentrated waste in a special storage container. According to the method, efficient and safe radioactive waste management is achieved through the synergistic effect of a series of steps, the safety of long-term storage is greatly improved, and the method has great significance in protecting human health and protecting the ecological environment from radioactive contamination.

The application relates to the field of artificial rainfall, and relates to a method for artificial rainfall by using silver iodide nanoparticles and a scattering device. The main purpose is to overcome the problems of low nucleation efficiency caused by the dependence of traditional artificial rainfall technology on explosives, low utilization rate of silver iodide and uncontrollable particle size. The main scheme comprises the following steps: generating a pulsed laser beam by a laser generator; adjusting the energy density of the laser beam to 1-100 J / cm 2 , the pulse width is nanosecond to femtosecond level, the pulse repetition frequency is 10-100 kHz, the laser beam is focused on the surface of a silver iodide target material; the transient photo-thermal effect of the laser beam is utilized to cause the silver iodide target material to be non-decomposable gasified to generate silver iodide vapor; the silver iodide vapor is condensed into 10-1000 nm silver iodide nanoparticles in the air through high-altitude low-temperature high-speed airflow to form artificial condensation nuclei; and the silver iodide nanoparticles are released to the top or inside of a target cloud layer to promote the condensation of water vapor in the cloud and the formation of precipitation.

The application discloses solar positive silver powder with high dispersity and high tap density, which is prepared by decomposing silver iodide under blue light and inducing silver single element, has high dispersity and high tap density, and can well meet the fine line and low resistance requirements of solar positive electrodes. The application also discloses a manufacturing method of the solar positive silver powder, which comprises the following steps: preparing a system A solution, adding a solution, preparing a system B solution after blue light irradiation, mixing the system A solution and the system B solution, adding a flocculating agent to obtain silver powder precipitation, washing, drying and crushing the silver powder after solid-liquid separation, and obtaining the solar positive silver powder. Only the characteristics of silver iodide decomposition under light are used, silver single element is directly obtained through physical light irradiation, nucleation sites are provided for subsequent solar positive silver powder growth, and compared with chemical reduction, silver nucleus is obtained, so that the method is more simple and efficient.

The application relates to a nuclear power plant accident solution analysis method, device, equipment and storage medium, comprising the following steps: determining the total reaction surface area of silver particles in a solution in a current period based on a first parameter of the silver particles, a second parameter of silver iodide and a solution volume in the current period; determining the generation amount of silver iodide in the solution in the current period according to the total reaction surface area of the silver particles in the solution, inherent properties, a first chemical reaction rate constant of the solution and the solution volume; determining the decomposition amount of the silver iodide in the solution in the current period according to the dose rate of a pool in a containment and a second chemical reaction rate constant of the solution; and determining the residual amount of the silver iodide based on the generation amount and the decomposition amount of the silver iodide in the solution in the current period. Compared with the result obtained by manual estimation, the application is more efficient and more accurate.

The application discloses a composite titanium dioxide interface bonding sterilizing agent and a preparation method thereof, and belongs to the technical field of inorganic antibacterial materials. The sterilizing agent is in-situ compounded by anatase titanium dioxide, cerium bromide and silver iodide, and the molar amount of the cerium bromide is 0.02-0.08 and the molar amount of the silver iodide is 0.04-0.20, with the molar number of the titanium dioxide being 1. The components are compounded through crystal face matching, chemical bond matching and energy band gradient matching to form a continuous interface bonding structure of Ti-O-Ce-Br-Ag-I and constitute a ternary coherent heterojunction. The application realizes efficient cooperation through crystal face matching, chemical bond matching and energy band gradient matching, generates high-activity oxygen species under visible light to realize rapid sterilization, realizes long-acting bacteriostasis through controllable release of Ag+ and I-, and improves the stability of the system by means of Ce3+ / Ce4+ circulation. The preparation adopts a low-temperature alcohol heating process, is suitable for industrial production, and has the advantages of mild conditions, no calcination and the like. The obtained sterilizing agent has the advantages of fast sterilization, long bacteriostasis period, high stability, non-toxicity, environmental protection and the like, and can be applied to the fields of medical disinfection, water treatment, air purification and antibacterial coating and the like.

This invention provides a lithium metal anode, its preparation method, and its application. The lithium metal anode includes a lithium metal matrix and an activation layer covering at least a portion of its surface; the lithium metal matrix includes lithium and silver; the activation layer includes lithium nitride and a first silver halide, wherein the first silver halide includes silver iodide. This invention provides an activation layer with specific chemical activity on the surface of a silver-containing lithium metal anode. Silver iodide can form lithium transport channels, activating dead lithium and improving the battery's cycle performance. Simultaneously, Li3N is a good SEI component, which can inhibit dendrite growth, isolate the electrolyte from contact with the anode, reduce active lithium loss, and further improve battery cycle performance. Furthermore, halogens existing in the form of silver halides are resistant to high voltage and not easily oxidized; therefore, high-voltage cathode materials with higher energy density can be selected to achieve a significant improvement in the cycle performance of high-energy-density lithium metal batteries.

This application discloses a method for curing silver iodide, a ceramic curing body, and its applications. The method for curing silver iodide provided in this application, considering the widespread use of silver iodide in the treatment of radioactive iodine, directly uses silver iodide as a raw material, mixes it with barium source salt and sodium iodide salt raw materials, and prepares a ceramic curing body through steps such as dry pressing, reaction, and sintering, thereby curing radioactive iodine within the ceramic curing body. This method is simple, low-cost, and highly applicable, and can cure silver iodide with a content of 4.44–35.40 wt%. Compared with traditional iodine curing methods, it is more practical and can be applied to the disposal of radioactive iodine waste.

The invention belongs to the field of preparation and application of nano materials, and discloses a simple method for preparing small-size silver halide (AgX: X = Cl, Br and I) nano particles. The preparation method comprises the following steps: respectively dropwise adding an ethylene glycol solution of silver nitrate and an ethylene glycol solution of sodium iodide into a stirred oleylamine phase; the small-size silver iodide nanoparticles are prepared by a method for controlling precipitation of silver ions and iodide ions in an oleylamine phase. The method has the main advantages that (1) the process is simple, the operation is convenient, and only three steps of solution preparation, stirring control and centrifugal separation are needed; and (2) the preparation process has good repeatability and controllability, and the average size of the synthesized nanoparticles can be controlled within 10nm. And (3) the prepared silver iodide nanoparticles have the characteristics of large specific surface area, high active sites and the like, and are suitable for preparing photocatalysts, artificial rainfall agents, CT contrast agents and the like.

This invention relates to a method for rapid detection of acetonitrile in gases, belonging to the technical field of environmental pollutant detection technology. The method involves placing a test strip in the environment of the gas to be detected, observing the color change of the test strip, and qualitatively or quantitatively determining the acetonitrile concentration based on the color change. The test strip is prepared as follows: Step 1, dissolving 1.0-3.0 mmol of N,N-diphenyl-4-(quinoline-5-yl)aniline in 1.0-3.0 mL of N,N-dimethylacetamide, and adding 40.0-50.0 μL of hydroiodic acid aqueous solution to form solution A; dissolving 1.0-3.0 mmol of silver iodide in 1.0-3.0 mL of saturated potassium iodide aqueous solution to form solution B; mixing solutions A and B, and allowing them to stand to produce yellow crystals, forming the target analyte; Step 2, uniformly distributing the target analyte onto filter paper using a dispersion liquid, and then air-drying or baking to form the test strip. This invention enables rapid qualitative or quantitative detection of acetonitrile in gases.

The utility model relates to the technical field of unmanned aerial vehicle rainfall, and provides an unmanned aerial vehicle for artificial rainfall, which comprises an unmanned aerial vehicle main body, and the unmanned aerial vehicle main body is provided with a vehicle body and wings arranged on two sides of the vehicle body; the vehicle arms are parallel to the vehicle body and perpendicular to the wings, first mounting grooves are formed in the two ends of each vehicle arm, driving motors are mounted in the first mounting grooves, and the driving motors are used for driving the propellers to rotate so that the unmanned aerial vehicle body can take off or land; and a connecting frame is arranged on the machine arm and is used for hanging a silver iodide cigarette bar. Compared with traditional cannonball launching, the unmanned aerial vehicle in the scheme can work repeatedly; a traditional cannonball mode needs professional personnel to drive a professional vehicle to a specific place for launching, and is limited by terrains, however, in the scheme, the unmanned aerial vehicle is not limited by the terrains and can be remotely controlled and take off; during large-area precipitation enhancement, the unmanned aerial vehicle in the scheme can complete precipitation enhancement by one aircraft through high navigational speed and long endurance, the coverage area is large, the efficiency is high, and the time is saved.

This application relates to the field of target vaporization technology, specifically a target vaporization platform. The main purpose is to realize the vaporization of silver iodide targets by laser. The main scheme includes a base (1), an adjustment mechanism is provided at the upper end of the base (1), a wire management box (2) is provided at the left end of the adjustment mechanism, an equipment box (3) is fixedly installed at the left rear end of the wire management box (2), a laser device (31) is fixedly installed at the lower end of the equipment box (3), a U-shaped plate (4) is fixedly installed at the rear end of the wire management box (2), a suspension (41) is fixedly installed at the lower end of the U-shaped plate (4), a lifting base (42) is provided at the bottom of the suspension (41), a lifting platform (43) is fixedly installed at the rear end of the lifting base (42), a fixing device is fixedly installed on the lifting platform (43), an installation plate (44) is fixedly installed at the upper end of the suspension (41), and a stepper motor (45) is fixedly installed on the installation plate (44).

The application relates to the technical field of solid-state batteries, and discloses a full-solid-state lithium-selenium battery composite positive electrode material and a preparation method and application thereof, wherein the composite positive electrode material comprises elemental selenium, silver iodide, conductive carbon and a sulfide solid-state electrolyte; according to the total mass percentage of the elemental selenium, the silver iodide, the conductive carbon and the sulfide solid-state electrolyte, the elemental selenium accounts for 25-35%, the conductive carbon accounts for 10-20%, the molar ratio of the elemental selenium to the silver iodide is 8-32:1, and the balance is the sulfide solid-state electrolyte; and the charge-discharge voltage window of the composite positive electrode material is 0.8-1.8 V. The elemental selenium positive electrode is modified by AgI, in-situ reaction of elemental silver nanoparticles and lithium iodide phases can be generated under the charge-discharge voltage window, the electron and ion collaborative transmission channel is greatly widened, the solid-solid interface impedance is reduced, the volume shrinkage and expansion are effectively relieved, and therefore the composite positive electrode material exhibits good rate performance and long cycle stability.

The application relates to the technical field of functional nanocomposites, and discloses a preparation method of modified conductive carbon black dispersion and the modified conductive carbon black dispersion and application thereof. The method comprises the following steps: (1) mixing conductive carbon black, coffee residue, grinding agent and water, adjusting the pH value of the mixed solution to alkalinity, and grinding at normal temperature to obtain a primary carbon black dispersion; (2) grinding nano silver iodide, nano palladium and the primary carbon black dispersion at normal temperature to obtain a carbon black composite dispersion in-situ modified by silver and palladium; and (3) grinding water-based polyurethane and the carbon black composite dispersion in-situ modified by silver and palladium at normal temperature to obtain the modified conductive carbon black dispersion. The core advantage of the method lies in that through multi-step synergistic action, efficient regulation and composite modification of the surface properties, dispersibility and functionality of the carbon black material are realized, and the modified conductive carbon black dispersion is attached to the surface of textiles to obtain a durable, antibacterial and conductive material.

The invention relates to a method for measuring the content of iodine-129 in aerosol, which comprises the following steps: putting a quantitative aerosol sample into a digestion tank, and adding dilute ammonia water and an I-125 tracer agent into the digestion tank; substances in the digestion tank are digested based on microwave digestion, and digestion liquid is filtered and reserved; taking a first volume of digestion solution and an I-125 tracer solution with the same volume, and determining the content of iodide ions entering the digestion solution in the aerosol sample to obtain an iodine recovery rate; acquiring the concentration of I-127 in the digestion solution by adopting an inductively coupled plasma mass spectrometry technology; sequentially adding nitric acid, an iodine standard solution and a silver nitrate solution into the digestion solution to obtain a silver iodide precipitate; the silver iodide precipitate is dried, silver powder is mixed, and the ratio of I-129 to I-127 in the silver iodide precipitate is detected; and calculating the concentration of the I-129. The technical effects that the detection method is simple and the detection time is shortened are achieved.

The invention provides an intelligent smoke furnace body, and relates to the technical field of smoke furnaces, the intelligent smoke furnace body comprises a plurality of smoke strip parts, the plurality of smoke strip parts are distributed in a circumferential array mode, a combustion chamber is arranged in the center surrounded by the plurality of smoke strip parts, and the combustion chamber and the smoke strip parts are assembled together and installed on the ground of the windward slope side by means of an embedded part. A smoke exhaust pipe is installed at the upper end of the combustion chamber, cigarette bars in the cigarette bar parts are ignited by an electronic ignition device, and smoke generated by combustion of the silver iodide cigarette bars in the cigarette bar parts is mixed in the combustion chamber and exhausted upwards from the smoke exhaust pipe along with hot air. According to the invention, the air supply part drives the curved-surface long-strip fan blades to rotate through the rotating wheel, and a high-rotating-speed rotating disc and an arc-shaped air supply sheet which are realized through transmission of the variable-speed shaft are combined, so that dual upward air supply acting force is formed, the speed of smoke exhausted from the smoke exhaust pipe is greatly accelerated, and the smoke can be quickly diffused to a target area.