12 results about "Free iodine" patented technology

The invention discloses a novel application of a kudzuvine root powder-based iodine complex in preparation of a medicine for preventing or treating hyperthyroidism. Experimental research shows that compared with a traditional iodine preparation, the radix puerariae powder-based iodine compound can achieve effective loading and stable wrapping of iodine and can effectively reduce the concentration of free iodine, so that the direct stimulation and injury risk of iodine to gastrointestinal mucosa is greatly reduced, the tolerance and compliance of patients taking medicine for a long time are remarkably improved, and the curative effect is good. The medicine is suitable for long-term health management of hyperthyroidism patients, and a novel treatment choice which is safe, stable, convenient and good in tolerance is provided for long-term medicine intervention of hyperthyroidism.

The present invention relates to kits, methods and systems for modulating free iodine in PVP-I, facilitating antimicrobial action while also ensuring compatibility with diagnostic assays.

This application discloses a polarizer and its preparation method, a display module, and a display device, relating to the field of display technology. The polarizer includes a polarizing layer in which perovskite quantum dots are dispersed. The perovskite quantum dots are generated by an in-situ reaction of a perovskite precursor, a ligand solvent, and free iodine ions from the polarizing layer. This application solves the technical problem that residual free iodine ions in the polarizer can easily lead to a decrease in the polarization degree of the polarizer.

The application discloses a method for continuously preparing hydriodic acid. The method comprises the following steps: dissolving phosphorous acid in oxygen-free water to obtain an aqueous phase feed liquid; dissolving elemental iodine in a water-insoluble inert organic solvent to obtain an organic phase feed liquid; continuously contacting the organic phase feed liquid with the aqueous phase feed liquid through micro-interface mass transfer to generate a reduction reaction; continuously discharging a mixed liquid obtained after the reaction; and collecting a lower aqueous phase after the mixed liquid is allowed to stand and separate into layers, and then filtering and performing vacuum rectification to obtain the hydriodic acid. The method for continuously preparing the hydriodic acid by using the water-inert organic solvent two-phase micro-interface mass transfer technology not only completely avoids the problem of excessively high local iodine concentration in the aqueous phase, reduces the generation of free iodine from the source, but also improves the inter-phase mass transfer efficiency, so that the reaction can be completely performed under low-temperature conditions, the thermal decomposition rate of the hydriodic acid is significantly reduced, and the decomposition and oxidation of the hydriodic acid are effectively inhibited.

This method produces water containing free iodine, which can be used to suppress slime and fouling, without the use of an oxidizing agent. [Solution] By irradiating water containing iodide, such as an aqueous potassium iodide solution (iodide-containing water), with ultrasonic waves using an ultrasonic transducer 31, free iodine is generated in the iodide-containing water.

The application provides a HI purification method and system based on coupling of extraction and electrodialysis. The method comprises the following steps: 1) using tri-n-octylphosphine oxide (TOPO) as an extractant to selectively complex and extract free iodine and triiodide ions in HIx phase; 2) desorbing the TOPO-I2 complex by low-temperature methanol to realize I2 recovery and TOPO regeneration; 3) deeply concentrating HI by using acid-resistant anion exchange electrodialysis membranes (perfluorosulfonic acid-CNT composite AEM) to increase the concentration of HI to ≥70 %; and 4) generating hydrogen and I2 by high-temperature pyrolysis of HI. The application integrates extraction and electrodialysis technologies to realize HI purification for hydrogen production from sulfur and iodine, realizes two-stage separation, removes free I2 in advance by TOPO extraction, greatly reduces the iodine content in the solution entering the electrodialysis system, avoids the deposition of iodine on the membrane surface, inhibits the electrodialysis process, ensures the selectivity and flux of the membrane during long-term operation, prolongs the service life of the membrane, and reduces the operation and maintenance cost.

The invention provides high-purity cesium iodide as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, carrying out alkali adjustment on lithium ore lithium-extracted liquid, carrying out multi-stage counter-current extraction by adopting an extraction agent and a diluent, and selectively separating cesium ions to obtain a cesium-loaded organic phase; s2, washing the cesium-loaded organic phase with a hydroiodic acid solution, and removing co-extracted impurity ions such as K < + > and Na < + >; s3, a hydriodic acid solution is adopted as a stripping agent for reverse extraction, and cesium-rich strip liquor is obtained; s4, the cesium-rich strip liquor is subjected to oil removal treatment through macroporous adsorption resin; s5, carrying out primary rotary evaporation concentration and secondary freezing crystallization on the deoiled solution, and then carrying out suction filtration to obtain a CsI solid; s6, washing the CsI solid with an anti-solvent to remove free iodine; and S7, roasting the washed CsI in a certain atmosphere at 550-650 DEG C to obtain the high-purity cesium iodide powder.

The invention discloses a leaching method for preparing a targeted therapeutic drug, which comprises the following steps: S1, adjusting CO2 to a critical temperature of 31.1 DEG C and a critical pressure of 7.38 MPa or above to a supercritical state, pre-leaching iodine-131 labeled carbon microspheres, then adding a surface modifier, and treating iodine-131 labeled carbon microsphere suspension with high-frequency ultrasonic waves; s2, transferring an iodine-131 labeled carbon microsphere suspension subjected to supercritical CO2 pre-leaching and surface treatment to a lead shielding centrifugal tube, adding 8-12mL of a leaching buffer solution into 1mL of carbon microspheres, performing vortex mixing, discarding supernate, and repeating twice; s3, enabling the carbon microsphere suspension to pass through an anion exchange column, flushing a resin column by using a leaching buffer solution, and collecting carbon microspheres in effluent; and S4, carrying out vortex mixing by using sterile injection water suspended carbon microspheres, discarding the supernate, repeating for three times, and enabling the suspension to pass through a sterile filter membrane. According to the method, the free iodine-131 in the iodine-131 carbon microspheres can be effectively removed, the medicine safety is guaranteed, and the potential harm to the thyroid gland of a patient is reduced.

The present invention discloses a sterilization iodophor compound composition and a processing technology thereof, and relates to the technical field of sterilization, xanthan gum is added into deionized water, stirring is performed until complete dissolution, cooling is performed, glycerol and an amino-polyethylene glycol-polyacrylic acid block copolymer are added, stirring is performed until complete dissolution, povidone iodine is added, stirring is performed until complete dissolution, and the sterilization iodophor compound composition is obtained. And adding the microcapsule solution, adding deionized water, stirring, keeping out of light, standing and filtering to obtain the iodophor compound composition for sterilization. The povidone iodine can oxidize and destroy bacterial protein and nucleic acid by providing free iodine, so that a broad-spectrum bactericidal effect is achieved; thymol and eugenol destroy bacterial cell membranes and cell walls and inhibit key enzyme activity so as to realize a bactericidal effect; tannic acid is combined with protein to form a compound on a cell membrane to destroy the membrane function of the cell membrane; through the synergistic effect of the three components, the sterilization effect of the iodophor compound composition for sterilization is improved.

The invention relates to the technical field of hydrometallurgy and inorganic chemical engineering, and discloses a method for preparing battery-grade high-purity manganese sulfate by reducing manganese oxide ore through sulfur dioxide, a composition is composed of manganese oxide ore powder, water, an iodine source and a fluorosilane modified hydrophobic porous adsorption medium, and the technological process comprises the steps that a gas-liquid-solid-solid four-phase system is constructed, sulfur dioxide is introduced, and a gas-liquid-solid four-phase system is constructed; the elemental iodine enriched on the hydrophobic interface is utilized to preferentially oxidize sulfur dioxide to generate an intermediate reducing agent hydriodic acid, and then manganese ore is leached; along with the reaction, free iodine in a liquid phase is driven to spontaneously transfer into a hydrophobic medium to realize in-situ regeneration by utilizing a high-ionic-strength salting-out effect generated by accumulation of a product manganese sulfate. By means of reaction path reconstruction and physical and chemical environment regulation and control, generation of dithionate by-products is effectively inhibited, the problem of homogeneous catalyst recovery is solved, reaction kinetics and product purity are remarkably improved, and the method is suitable for industrial application.

The invention relates to the technical field of zinc-iodine batteries, in particular to a PEDOT: PSS-based conductive-agent-free iodine positive electrode and a preparation method and application thereof.The preparation method comprises the steps that iodine-loaded carbon black and poly (3, 4-ethylenedioxythiophene): poly (sodium p-styrenesulfonate) are mixed and ground, then water is added, wet grinding is continued, and PEDOT: PSS-based conductive-agent-free iodine positive electrode slurry is obtained; the iodine positive electrode slurry is taken and coated on a stainless steel mesh, and is dried at room temperature to obtain the conductive agent-free iodine positive electrode of PEDOT: PSS, and the conductive agent-free iodine positive electrode of PEDOT: PSS is applied to the zinc-iodine battery, so that the cycle performance and the energy density of the zinc-iodine battery are improved, and the huge potential of large-scale application of the high-performance zinc-iodine battery in the future is shown.

The invention provides an HI purification method and system based on extraction and electrodialysis coupling. The method comprises the following steps: 1) carrying out selective complexation extraction on free iodine and triiodide ions in an HIx phase by adopting tri-n-octylphosphine oxide (TOPO) as an extracting agent; 2) performing low-temperature methanol desorption on the TOPO-I2 complex to realize Irecovery and TOPO regeneration; 3) deeply concentrating through an acid-resistant anion exchange electrodialysis membrane (perfluorosulfonic acid-CNT composite AEM), and increasing the HI concentration to be more than or equal to 70%; and 4) performing high-temperature thermal cracking on the HI to generate hydrogen and I2. The method integrates extraction and electrodialysis technologies to realize sulfur-iodine hydrogen production HI purification and two-stage separation, and free I2 is removed in advance through TOPO extraction, so that the content of iodine in a solution entering an electrodialysis system is greatly reduced, the iodine is prevented from being deposited on the surface of a membrane, the electrodialysis process is inhibited, the selectivity and flux of long-term operation of the membrane are ensured, the service life of the membrane is prolonged, and the quality of the membrane is improved. The operation and maintenance cost is reduced.