63 results about "Iodide" patented technology

The application discloses a perovskite solar cell passivated by a sulfur-containing passivation agent, and a passivation layer is formed on an APbX3 peroviskite film by using the sulfur-containing passivation agent. 2+ S in the sulfur-containing passivation agent interacts with the weakly acidic Pb as a Lewis base, and H in the passivation molecule can form a hydrogen bond with the nearby iodide to further strengthen the interaction, reduce the surface defect density of the APbX3 peroviskite film, improve the interface energy level matching between the peroviskite and the charge transport layer, reduce the environmental resistance of the peroviskite solar cell, and greatly improve the photoelectric conversion efficiency and stability of the APbX3 peroviskite solar cell.

This invention discloses an in-situ removal process for total inorganic iodide in water based on oxidation-adsorption, belonging to the field of water treatment technology. The process includes: first, taking raw water containing inorganic iodide, adding bicarbonate and adjusting the pH of the solution to 7-7.5; then, adding ferrous salt to the raw water; finally, adding KMnO4 to the raw water with added ferrous salt under stirring conditions, reacting to prepare a MnO2-nascent iron particle complex; on the one hand, promoting the removal of total inorganic iodide from water through mild oxidation-adsorption. ‑ Oxidation transformation occurs to generate HOI / I2; on the other hand, the in-situ products HOI / I2 are adsorbed and fixed through adsorption / co-precipitation methods, and nascent iron is captured through surface coordination or electrostatic adsorption. This invention achieves the capture of I2 under neutral / weakly alkaline drinking water conditions through a mild and controllable oxidation-adsorption synergistic mechanism. ‑ Simultaneous adsorption and removal of its conversion products are achieved to ensure that total iodine is removed to the required standard.

This invention discloses a method for preparing high-purity hydroiodic acid based on an electrodialysis system, belonging to the fields of chemical engineering and new energy technology. The method includes: introducing a first iodide solution into the material chamber of a three-compartment bipolar membrane electrodialysis system; after acid-base preparation, a second iodide solution is obtained; the obtained second iodide solution is then introduced into the desalination and concentration chambers of a two-compartment homogeneous membrane electrodialysis system for electrodialysis concentration, yielding a third and fourth iodide solution; the products from each stage can be reused or sold after processing. This invention avoids the generation of the byproduct iodate, directly generating a high-purity, high-concentration hydroiodic acid solution, eliminating cumbersome and expensive purification steps, and completely achieving product separation. The process is simple, safe, and environmentally friendly. The acid produced by the three-compartment bipolar membrane electrodialysis system becomes a qualified hydroiodic acid product after passing through an MVR evaporation system, and the produced alkali, as a byproduct, can be sold or utilized, turning waste into treasure.

This invention relates to a 1,1,2,2-tetrahydroperfluoroalkyl-substituted allyl quaternary ammonium salt, its preparation method, and its application, belonging to the field of flocculation treatment technology for high-salt industrial wastewater from natural gas purification. To address the problem that the synthesis of cationic polymer flocculants in existing technologies requires large amounts of surfactants and involves complex operations, this application employs a substitution reaction between 1,1,2,2-tetrahydroperfluoroalkyl iodide and N-methylallylamine; iodomethane is then reacted with the substitution reaction product to undergo quaternization, yielding a 1,1,2,2-tetrahydroperfluoroalkyl-substituted allyl quaternary ammonium salt; the 1,1,2,2-tetrahydroperfluoroalkyl-substituted allyl quaternary ammonium salt is polymerized with acrylamide to obtain a novel cationic polyacrylamide flocculant. The synthesis of cationic fluorocarbon-modified hydrophobic associative polyacrylamide flocculants using an aqueous solution polymerization method is simple, requires no surfactants, and experiments show that the prepared flocculant exhibits excellent flocculation performance.

The application belongs to the technical field of photovoltaic devices, and relates to preparation and application of a multifunctional organic additive doped CsSnI3 perovskite film; during preparation, a perovskite spin coating liquid is spin coated on an ITO glass substrate to form a precursor film, and the precursor film is subjected to annealing treatment to obtain a CsSnI3 perovskite film; the perovskite spin coating liquid is formed by adding stannous fluoride and 3-amino-pyrazine-2-carboxamide (3-APCA) to a perovskite precursor solution and stirring; the perovskite precursor solution is formed by dissolving cesium iodide and stannous iodide in an organic solvent; and the application is applied to solar cells, light-emitting diodes, photoelectric detectors, photoelectric catalysis and energy storage. The method introduces the multifunctional organic additive 3-APCA, realizes Sn 2+ oxidation inhibition, optimizes film crystallinity and passivates defects, and significantly improves the quality of the CsSnI3 perovskite film; and the application range is wide.

The application discloses an improved plant liquid culture medium, which comprises inorganic nutrients required by plant basic growth and does not comprise compounds containing an EDTA ligand skeleton and iodide. The application also discloses application of the improved plant liquid culture medium in mercury compound metabolism research. The application is based on the technical problem of finding that a culture medium substrate mediates abiotic transformation and causes error defects, and by eliminating the compounds containing the EDTA ligand skeleton and the iodide which induce abiotic transformation of mercury compounds, the application is applied to block the abiotic transformation path of methyl mercury in the mercury compound metabolism research, and eliminate the 'false positive' error in the metabolism research.

This invention discloses an in-situ iodine-generating water purification material, a water purification method, and a method for regenerating the water purification material, solving the technical problems of poor storage stability of elemental iodine, uncontrollable addition, and potential secondary pollution in existing technologies. The in-situ iodine-generating water purification material includes a catalyst and an oxidant, which undergo a catalytic oxidation reaction in organic wastewater to generate elemental iodine; wherein the catalyst includes a metal oxyiodide generated by a solvothermal reaction of a soluble bismuth salt and a soluble alkali metal iodide. The water purification method includes the steps of adding the catalyst and oxidant from the aforementioned in-situ iodine-generating water purification material to the organic wastewater. The method for regenerating the aforementioned in-situ iodine-generating water purification material includes the steps of adding the deactivated water purification material to an iodide solution, reacting for a period of time, and then collecting the solid to obtain the regenerated catalyst.

This invention relates to the field of photoelectrocatalytic organic synthesis technology, specifically to a composite photoelectrode for photoelectrocatalytic preparation of ketone compounds from polyols, its preparation method, and its application. The method includes: dropping a dimethyl sulfoxide solution of vanadium acetylacetonate onto an FTO conductive glass plated with bismuth iodide, wherein the ratio of the amount of vanadium acetylacetonate to the deposition area of ​​bismuth iodide is 10-15 mmol:1 cm². 2 The bismuth oxy iodide deposition on the FTO conductive glass was carried out until the dimethyl sulfoxide solution of vanadium acetylacetonate completely covered the bismuth oxy iodide deposition, followed by calcination to obtain a BiVO4 photoanode. An ethanol solution of [2-(9H-carbazole-9-yl)ethyl]phosphonic acid was spin-coated onto the BiVO4 photoanode and dried to obtain a 2PACz / BiVO4 photoanode. A second constant-potential electrodeposition was performed, followed by washing to obtain the composite photoelectrode. The calcination conditions included a calcination temperature of 600-800℃, a calcination time of 2-4 h, and a heating rate of 8-12℃ / min. This composite photoelectrode can photocatalyze the conversion of polyols into ketone compounds.

The application discloses a norpinane alkyl carbazole enhanced fluorescent probe for detecting viscosity and a preparation method and application thereof. The application takes norpinone as raw material, and performs a cyclization reaction with phenylhydrazine hydrochloride to obtain a compound TC; the compound TC is subjected to N-alkylation reaction with N,N-dimethyl-3-chloropropylamine to obtain a compound TC-AP; the compound TC-AP is subjected to formylation reaction with phosphorus oxychloride to obtain a compound TC-AP-F; and the compound TC-AP-F is subjected to condensation reaction with 4-(cyanomethyl)-1-methylpyridin-1-yl iodide to obtain a fluorescent probe TC-AP-A. The probe TC-AP-A can specifically recognize viscosity, and the red fluorescence of the solution is gradually enhanced with the continuous increase of the viscosity of the system, and the minimum detection limit is 1.41 cP. The probe has the advantages of simple synthesis, good selectivity, high sensitivity, good biocompatibility, low toxicity and the like, and has a good application prospect.

The application discloses a method for synthesizing N-(hetero) aryl sulfonamide compounds. The method uses bipyridine as a ligand, nickel acetate or nickel chloride as a catalyst, low-cost low-activity (hetero) aryl chloride and different types of sulfonamides as substrates, 1,8-diazabicycloundec-7-ene, tetramethyl guanidine, 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene and the like as organic bases, and tetra-n-butylammonium iodide as an additive. The C-N coupling reaction of (hetero) aryl chloride and sulfonamide is realized by light-induced nickel catalysis in an argon atmosphere, so as to realize the synthesis of various (hetero) aryl sulfonamide compounds. The reaction system is simple, the operation is simple, the reaction condition is mild, the post-treatment is simple, the yield is good, the substrate range is wide, the use of traditional expensive metal catalysts and inorganic bases is avoided, the problems of complex catalytic system reaction and poor functional group compatibility are solved, and the method is a simple and efficient method for synthesizing (hetero) aryl sulfonamide compounds. The method has good application prospect.

This invention discloses a nopinel-based bifunctional fluorescent probe capable of simultaneously detecting hypochlorous acid and viscosity, along with its preparation method and applications. The probe is 2-(2-(5-(4-(3,3-dimethyl-1,2,3,4-tetrahydro-2,4-geomylidene-acridin-9-yl)phenyl)furan-2-yl)vinyl)-6-methoxy-3-methylbenzothiazolium iodide, abbreviated as TA-PFV-TI. This probe can specifically detect the viscosity and hypochlorous acid of a solution. Under 365 nm ultraviolet light irradiation, the probe's orange fluorescence gradually intensifies with increasing solution viscosity. The linear detection range for viscosity is 1.28 cP–1411.98 cP, with a response time within 1 second and a detection limit of 1.00 cP. Upon addition of hypochlorous acid to the probe solution, its fluorescence color changes from orange to bright blue. The linear detection range for hypochlorous acid is 0–200 μM, with a response time of 5 min and a detection limit of 2 nM. The applicable pH range is 5–9. This probe, as a bifunctional fluorescent probe capable of simultaneously detecting hypochlorous acid and viscosity, exhibits numerous advantages such as good selectivity, high sensitivity, and wide applicability, demonstrating promising application prospects.

This application discloses a perovskite solar cell and its preparation method, a tandem solar cell, and a photovoltaic module, relating to the field of photovoltaic technology. In the preparation method of the perovskite solar cell provided in this application, an isobutylammonium iodide solution is coated onto a framework layer and annealed. The organic cations in the isobutylammonium iodide solution can remain on the surface and grain boundaries of the framework layer, acting as surfactants and passivators, rather than undergoing premature phase transition. The isobutylammonium iodide improves the wettability of the framework layer surface to the subsequent organic ammonium salt solution, ensuring uniform spreading and penetration of the organic ammonium salt solution, creating ideal conditions for homogeneous nucleation and growth. By utilizing isobutylammonium iodide to regulate crystallization kinetics, passivate defects, and expand the nucleation window, unreacted framework layer residue can be reduced, thereby improving the performance of the perovskite layer and the perovskite solar cell.

The application provides application of methylammonium iodide in preparation of a black-phase CsPbI3 thin film. The application also provides a preparation method of the CsPbI3 thin film. By introducing methylammonium iodide into a perovskite precursor and combining a vacuum-assisted method, the application overcomes the disadvantage of rapid disorder of CsPbI3 crystallization, and realizes high-quality preparation of the black-phase CsPbI3 thin film at a low temperature.

This invention belongs to the field of polyolefins, and particularly relates to a method for reducing the ash content of polypropylene and the application of imidazolium ionic liquids. The method provided by this invention includes the following steps: mixing imidazolium ionic liquid with crude polypropylene, filtering, and washing to obtain low-ash polypropylene; the imidazolium ionic liquid has the structure of formula (I); in formula (I), R... ‑ The ash is derived from one or more of chloride, bromide, iodide, hydroxide, acetate, thiocyanate, nitrate, methanesulfonate, tetrafluoroborate, and hexafluorophosphate ions. This invention uses an imidazolium ionic liquid with a specific chemical structure as an ash removal agent for polypropylene. This imidazolium ionic liquid can interact with the metallic ash in polypropylene, thereby significantly reducing the ash content in the washed polypropylene product.

This invention discloses a triphenylamine-based D-A type AIE molecule targeting STAT3, its preparation method, and its application in the diagnosis and treatment of colorectal cancer. This molecule uses triphenylamine as a donor and pyridinium as an acceptor, linked by a rigid conjugated trans-vinyl group, exhibiting aggregation-induced emission (AIE) properties. The preparation method employs a Knoevenagel condensation reaction, using 4-(diphenylamino)benzaldehyde and 1,4-dimethylpyridinium iodide as raw materials, and proceeds via a nucleophilic addition-dehydration reaction catalyzed by pyrrolidine, with a yield of 50±3% and a purity ≥98%. This molecule exhibits a fluorescence emission wavelength of 640 nm, demonstrates a significant AIE effect, can penetrate the colorectal cancer cell membrane and specifically aggregate, and shows activity against the IC50 of HCT116 and DLD1 cells. 50 The concentrations were 6.41 μM and 11.46 μM, respectively, which exerted anti-tumor effects by inhibiting STAT3 phosphorylation, enabling integrated diagnosis and treatment of colorectal cancer.

A method for forming a perovskite compound thin film is disclosed, comprising reacting the following reactants: i) at least one compound selected from the group consisting of amine compounds, amine iodides, amine bromides, amine chlorides, amidine compounds, amidine iodides, amidine bromides, and amidine chlorides; ii) an organometallic compound containing a divalent cation represented by R1(CH3)4 or R1(CH2H5)4 (wherein “R1” includes metals selected from the group consisting of Pb, Sn, Ge, Sb, Bi, and Ba); and iii) at least one hydrohalide selected from the group consisting of HI, HBr, Hf, and HCl.

This invention discloses a process and active carrier catalyst for the catalytic synthesis of acetyl empagliflozin. The process utilizes a yeast cell wall-mediated active carrier nickel-phosphorus composite catalyst. The catalyst is activated in a water / glycerol mixed solvent via microwave-ultrasound dual-field synergistic activation, catalyzing the reaction of compound 5 with compound 4 to obtain compound 3. In a supercritical CO2 / ionic liquid system, leveraging the photoisomerization properties of spiropyran-quaternary ammonium iodide, under low-voltage electrocatalysis and UV-Vis switching conditions, the directional glycosylation reaction of compound 3 with compound 2 is achieved to obtain compound 1. This invention utilizes the porous structure and functional groups of the yeast cell wall to stabilize nano-nickel-phosphorus particles, improving catalytic efficiency and reusability. Through the synergistic guiding effect of photoresponsive molecules and ionic liquids, high selectivity of the reaction is achieved. The entire process uses green solvents, and a closed-loop catalyst recovery process is established, offering advantages such as environmental friendliness, low cost, and high product purity.

The application discloses a eutectic electrolyte based on ionic liquid and application thereof in a water-based zinc-iodine battery, and belongs to the technical field of eutectic electrolytes. First, a sulfonic acid pyrrolidone copolymer is prepared by radical polymerization with 2-acrylamido-2-methylpropanesulfonic acid and N-vinylpyrrolidone as monomers, then a stable eutectic liquid phase system is constructed by regulating the amount of deionized water with zinc sulfate heptahydrate as a zinc salt and 1-ethyl-3-methylimidazolium chloride as a core functional component, and then the sulfonic acid pyrrolidone copolymer is introduced to prepare the eutectic electrolyte based on ionic liquid. When the electrolyte is used for assembling the water-based zinc-iodine battery, the iodine-based four-electron transfer reaction can be stably realized, the migration of iodide and the disorderly growth of zinc dendrites are effectively inhibited, and the water-based zinc-iodine battery has long-term cycle stability.

The application discloses a dicarboxylic acid-quaternary ammonium salt synergistic catalytic system and application thereof in carbon dioxide and epoxide reaction. The catalytic system comprises a dicarboxylic acid compound and a quaternary ammonium salt, wherein the dicarboxylic acid serves as a hydrogen bond donor, the quaternary ammonium salt provides a nucleophilic anion, and both of them synergistically promote epoxide activation and carbon dioxide insertion reaction. The dicarboxylic acid preferably has a first dissociation constant pKa1 of 4.0-7.0, and the quaternary ammonium salt is preferably a bromide or iodide tetraalkylammonium salt. In the presence of the catalytic system, carbon dioxide can be efficiently reacted with various epoxides under relatively mild conditions to generate corresponding cyclic carbonates. The catalytic system has the advantages of simple structure, no metal, high catalytic efficiency, wide substrate application range and the like, and has a good industrial application prospect.

This invention discloses a method and system for the synergistic degradation of COD and new pollutants in industrial wastewater based on catalytic reduction-oxidation. The method includes: adjusting the pH of dyeing and printing wastewater containing perfluorinated compounds (PFCs) to alkaline; adding a reducing agent (sulfite) and a catalyst (alkali metal iodide); then carrying out a catalytic reaction under ultraviolet light irradiation and stirring; adding an oxidizing agent (persulfate PMS) and a catalyst (ferrous sulfate) to the effluent after catalytic reduction; and carrying out a catalytic oxidation reaction under light-proof and stirring conditions. The ferrous sulfate activates the PMS to generate sulfate radicals, completely mineralizing the short-chain fluorine-containing intermediates generated in the reduction stage into CO2 and F. ‑ Simultaneously, it degrades residual organic matter. The method of this invention can efficiently and thoroughly degrade perfluorinated compounds in actual dyeing and printing wastewater, and has strong anti-interference ability, low operating cost, and no secondary pollution.

The application discloses a supramolecular nanotube based on cation-pi interaction and application, and belongs to the technical field of supramolecular functional materials. The supramolecular nanotube based on cation-pi interaction is a hexagonal columnar structure formed by self-assembly of cations of V-type pyridine, and the V-type pyridine is 4,4'-((1E,1'E)-(5'-(undecan-11-yloxy)-[1,1':3',1''-triphenyl]-4,4''-diyl)bis(ethene-2,1-diyl))bis(1-methylpyridinium-1-iodide) or 4,4'-((1E,1'E)-(5'-(undecan-11-yloxy)-[1,1':3',1''-triphenyl]-4,4''-diyl)bis(ethene-2,1-diyl))bis(1-methylpyridinium-1-chloride), and structural formulae are as follows: or.

This invention relates to the field of aqueous battery materials technology, and discloses a zinc-iodine battery electrode material based on MXene-confined iodoene and its preparation method. The electrode material is made of a mixture of few-layer MXene, few-layer iodoene, and multi-walled carbon nanotubes. In the microstructure, multi-walled carbon nanotubes are interspersed between the few-layer MXene sheets to construct a long-range continuous hybrid conductive network; the few-layer iodoene is spatially confined within the two-dimensional sheet channels of the few-layer MXene. During preparation, a flexible, self-supporting film without binder is directly formed through liquid-phase mixing, ultrasonic self-assembly, and vacuum filtration. This invention utilizes multi-walled carbon nanotubes to improve the electronic conductivity of elemental iodine, and through the size exclusion effect of the interlayer channels of few-layer MXene and the chemical coordination of its surface polar functional groups (-OH, -O, -F), it provides a physical barrier and chemical anchoring for polyiodides, suppressing the shuttle effect and improving the battery cycle stability and energy density.

The utility model discloses a cane sugar factory sulfur fumigation intensity detection device, including titration detection jar subassembly, the top of titration detection jar subassembly is provided with the sampling subassembly who is connected with low temperature sulfur combustion furnace, the front side of titration detection jar subassembly is provided with steam generation jar, the titration detection jar subassembly includes the detection jar, the iodine solution jar of fixed connection in the right side of detection jar and the metering peristaltic pump of fixed in the back of detection jar. The scheme can continuously deliver high temperature steam to the detection jar through the booster air pump, can preheat the jar body and disperse the residual gas before detection, utilizes the physical scouring and high temperature sterilization characteristics of steam after detection, quickly decomposes the sulfite crystallization, iodide precipitate and organic attached matter generated in the reaction, avoids the jar body abrasion or clean dead angle caused by traditional mechanical cleaning. And steam and jar inner wall directly contact and form steam film, prevent the reaction liquid drop from hanging wall solidification, steam forms vortex in the process of ascending, can strip the condensate on the top of jar and splash residual.

The present application relates to the technical field of organic synthesis, and particularly relates to an electrochemical synthesis method of 3-iodo-4-amino maleimide, which comprises the following steps: adding N-phenyl maleimide, aromatic amine compound or aliphatic amine compound, iodide and other substances as reaction raw materials into an anode chamber of an electrolytic cell, adding a supporting electrolyte and ultrapure water into a cathode chamber, and electrolyzing at room temperature to synthesize 3-iodo-4-amino maleimide. The present application uses electrochemical reaction, realizes the preparation of products through the gain and loss of electrons of reactants on electrodes, does not need to add additional oxidants and metal catalysts, and the reaction is carried out at normal temperature and pressure, which is conducive to energy saving. The process flow is simple, the operation is simple, and the reaction is easy to control. The present application opens up a new synthesis route and method for the preparation of 3-iodo-4-amino maleimide compound, and has good application potential and research value.

This invention relates to an apparatus and method for the efficient capture of iodine-containing exhaust gas, comprising a tower system, a gas supply system, an absorbent system, an exhaust gas detection system, and a control system. Iodine-containing exhaust gas enters from the bottom of the tower system via the gas supply system and flows upward within the tower. The absorbent system enters from the top of the tower system via a nozzle and flows downward. The two gases come into countercurrent contact within the tower. Sodium hydroxide in the absorbent reacts with iodine in the exhaust gas to form iodide, thus converting iodine from the gas phase to the liquid phase, achieving iodine absorption and capture. After absorption and capture, the exhaust gas passes through a demisting section to capture entrained droplets before being discharged from the top of the tower system. The exhaust gas detection system measures the concentration of iodine in the exhaust gas. This method enables efficient gas-liquid contact and mass transfer, and achieves constant-temperature circulation and composition control of the alkaline solution. Through optimized tower structure and control system, it achieves stable and efficient capture of iodine from iodine-containing exhaust gas, possessing good potential for scientific research verification and engineering scale-up.

The application discloses a preparation method of a tin-based perovskite light-emitting diode and belongs to the technical field of perovskite light-emitting diodes. The method comprises the following steps: synthesizing 2-(1-cyclohexenyl)ethylamine hydroiodide (CHEAI); preparing a perovskite precursor solution containing stannous iodide, CHEAI, tin powder, SnF2 and a reducing acid; spin-coating a PEDOT:PSS hole injection layer on an ITO anode; depositing a light-emitting layer by spin-coating and anti-solvent treatment; and evaporating a TPBi electron injection layer and a LiF / Al cathode. By introducing the reducing acid, the crystallization rate of the tin-based perovskite is effectively slowed down, Sn 2+ oxidation is inhibited, and the defect density of the thin film is reduced. The maximum brightness of the obtained red light PeLEDs reaches 476 cd / m 2 , the external quantum efficiency reaches 0.38%, which is about 41% and 58.3% higher than those of a device without the reducing acid, and the light-emitting peak position is stable at 611 nm.

The application discloses a fluorescent probe for dual-channel distinguishing detection of hypochlorous acid and bisulfite in ferroptosis, a preparation method and application thereof, and belongs to the technical field of fluorescent probe detection and analysis of HClO and HSO3 ‑ . The fluorescent probe is (E)-3-ethyl-1,1-dimethyl-2-(4-(methylthio)styryl)-1H-benzo[e]indol-3-ium iodide, and a structural formula thereof is shown in the description; the application further discloses a preparation method of the fluorescent probe and application of the fluorescent probe in simultaneous, rapid and high-selectivity identification of HClO and HSO3 ‑ and preparation of imaging detection reagents of HClO and HSO3 ‑ in organisms. The fluorescent probe can realize dual-channel distinguishing detection of HClO and HSO3 ‑ in pure PBS solution, has fast response, low detection limit and high selectivity, and has good imaging effect on endogenous HClO and HSO3 ‑ generated in the ferroptosis process.

The application discloses a carbazole-maleimide alternating conjugated macrocyclic material for efficient capture of radioactive triiodide and a preparation method thereof. The conjugated macrocyclic compound has a rigid pi conjugated skeleton, can be efficiently synthesized through one-step tandem condensation reaction, and can obtain two different crystal conformations (MC-Czalpha and MC-Czbeta) through crystal condition regulation. The two conformations show significant differences when adsorbing triiodide (I3 ‑ ), wherein the MC-Czalpha conformation has superfast adsorption kinetics, the rate constant can reach 5.44*10 ‑2 g·mg ‑1 ·min ‑1 , and high removal efficiency is maintained in a wide pH range, and the reuse performance is stable. The conjugated macrocyclic compound has a clear structure, excellent adsorption performance, and has a good application prospect in the fields of nuclear waste treatment, environmental remediation and iodine detection.

This invention relates to the field of analytical detection technology, and more particularly to an iodine [ 131 [I] A method for determining the radioactive purity and iodide content in sodium iodide capsules. The method of this invention includes: determination using high-performance liquid chromatography (HPLC), wherein the mobile phase consists of mobile phase A and mobile phase B, wherein mobile phase A is a mixed solution of tetrabutylammonium hydrogen sulfate and disodium hydrogen phosphate, and mobile phase B is acetonitrile. This invention's detection method can rapidly determine the radioactive purity and iodide content of therapeutic iodine [I]. 131 The method for determining the radiochemical purity and iodide content in sodium iodide capsules is fast and possesses excellent specificity, accuracy, stability, robustness, and reliability. It is well-suited for the determination and control of radiochemical purity and iodide content. Furthermore, the establishment of this analytical method enables the determination of radiochemical purity and iodide content in therapeutic iodine capsules. 131 The accurate detection of radiochemical purity and iodide content in sodium chloride capsules has played an important guiding role in the development and optimization of formulation processes.

The utility model relates to perfluoroalkyl iodide rectification purification technical field, concretely is a kind of perfluoroalkyl iodide rectification purification equipment, including connecting pipeline, and one end of connecting pipeline is provided with rectification device, and rectification device includes heat preservation box and hot water tank, and the inside of heat preservation box is provided with limiting plate and storage cylinder, and the outside of storage cylinder is provided with limiting groove, and the top of storage cylinder is provided with handle and sealing cover, the top of sealing cover is provided with limiting block, the top of limiting block is provided with hook, the bottom of hook is provided with electric push rod, and the bottom of electric push rod is provided with rotating stand. The perfluoroalkyl iodide rectification purification equipment, by the cooperation of hot water tank, output pipeline and water pump, play the role of adding hot water to the inside of heat preservation box, by the cooperation of output pipeline and hot water tank, play the role of facilitating water flow out of the inside of heat preservation box, by the cooperation of limiting plate and limiting groove, play the role of storing solution.