Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

56 results about "Radioactive iodine" patented technology

Preparation method for crown ether covalent organic framework material, and use thereof in iodine adsorption

Provided in the present invention are a preparation method for a crown ether covalent organic framework material, and the use thereof in iodine adsorption. In the present invention, an 18-crown-6-ether group is introduced into the structure of a covalent organic framework (COF) material for iodine adsorption work. The covalent organic framework material can form a one-dimensional pore channel structure in order, and the 18-crown-6-ether can be selectively complexed with iodine molecules, thereby achieving the purpose of efficient iodine adsorption. The material can perform specific iodine adsorption from high-temperature iodine steam, and the iodine steam adsorption capacity of the COF material is as high as 5.56 g / g. The COF material has a high adsorption capacity, is easy to prepare and simple to operate, has a high adsorption efficiency, and is particularly suitable for adsorbing and separating radioactive iodine in the nuclear industry.
Owner:CHONGQING UNIV OF ARTS & SCI

Preparation method and application of melamine modified collagenous fiber iodine adsorbent

The invention discloses a preparation method and application of a melamine modified collagenous fiber iodine adsorbent, and relates to the technical field of nuclear medical radioactive waste treatment. The preparation method comprises the following steps: activating collagen fibers and modifying melamine; wherein the melamine modification comprises the following steps: taking the activated collagenous fiber, adding water, melamine and a dialdehyde cross-linking agent, and stirring at 35-45 DEG C for 6-8 hours to obtain the melamine modified collagenous fiber iodine adsorbent. According to the application, the prepared melamine modified collagenous fiber iodine adsorbent is used for adsorbing radioactive iodine. After melamine grafting, the nitrogen content of the collagenous fiber is remarkably increased, the collagen fiber has more prominent adsorption capacity on iodine steam and iodine in a solution, and an effective strategy is provided for removal and collection of radioactive iodine such as medical wastewater and radioactive waste liquid.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Preparation of nitrogen-rich ionic organic single crystal material and application of nitrogen-rich ionic organic single crystal material in iodine adsorption

The invention discloses preparation of a nitrogen-rich ionic organic single crystal material and application of the nitrogen-rich ionic organic single crystal material in iodine adsorption, and belongs to the technical field of functional materials and radioactive pollutant treatment. The material is formed by self-assembly at room temperature through a solution method by taking biphenyl tetracarboxylic acid tetrabutylamine as an anion ligand and tetra (4-ethyl pyridine phenyl) ethylene bromide or tetra (4-imidazole phenyl) ethylene bromide as a cation ligand. The method is simple in preparation process, mild in condition and high in yield. The skeleton of the obtained material is rich in nitrogen sites and has a large cavity, the material shows extremely high adsorption capacity and rapid adsorption kinetics for iodine in a gas phase and a liquid phase, the maximum adsorption capacity of the material for iodine steam reaches up to 5.16 g / g, the retention rate of 95% or above can still be kept within 7 days after adsorption, and the material has good recycling performance. The material provides a novel and reliable solution for efficiently capturing and fixing radioactive iodine, and has a wide application prospect in the field of nuclear waste treatment.
Owner:LANZHOU INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Adsorption material for high-humidity and high-temperature iodine-containing aerosol and preparation method thereof

The invention discloses an adsorption material for high-humidity and high-temperature iodine-containing aerosol and a preparation method thereof.According to the prepared adsorption material, polymers such as melamino-formaldehyde resin serve as a three-dimensional porous framework, and the adsorption material is prepared through a mild one-step solution processing method; an ionic polyimine network based on a lysine salt ionic liquid and carbonyl-rich polyvinylpyrrolidone are compounded on a skeleton in situ to form a porous adsorbent, and the porous adsorbent realizes efficient capture of elemental iodine (I2), methyl iodide (CH3I) and iodine aerosol through a synergistic mechanism of electrostatic induced adsorption and in-situ packaging and curing, so that the adsorption efficiency is improved, and the adsorption efficiency is improved. Under the harsh industrial conditions that the temperature is 100 DEG C or above and the relative humidity is 90% or above, the dynamic adsorption capacity to iodine reaches up to 160.7 wt%, the filtering efficiency is kept 99.8% or above, meanwhile, excellent iodine retention stability, recoverability and large-scale preparation potential are achieved, and an efficient, low-cost and practical solution is provided for treatment of radioactive iodine in nuclear waste gas.
Owner:SOUTHWEAT UNIV OF SCI & TECH

CPN-Y2-Cl cation framework material as well as preparation method and application thereof

The invention discloses a CPN-Y2-Cl cation framework material as well as a preparation method and application thereof. The CPN-Y2-Cl cation framework material is constructed by carrying out quaternization reaction on tetra (1-imidazole phenyl) ethylene and 5, 5 '-bromomethyl-2, 2'-dipyridyl, and is obtained by carrying out anion exchange. The material has rapid and efficient adsorption performance on I3 <-> in a water phase, and still shows good selectivity in the presence of various competitive anions. Meanwhile, the material has obvious fluorescence quenching in the process of acting with I3 <->, and rapid detection of I3 <-> in water can be realized. The material designed by the invention is stable in performance, the preparation process is simple and convenient, and the prepared organic cation framework material has dual functions of adsorption and fluorescence recognition, and has a wide application prospect in the fields of treatment and real-time monitoring of radioactive iodine polluted water.
Owner:ZHEJIANG CENT FOR DISEASE CONTROL & PREVENTION

Method for evaluating protection time of radioactive iodine filter cartridge

The invention belongs to the field of nuclear industry protection, and discloses a radioactive iodine filter cartridge protection time evaluation method, which comprises the following steps: collecting data by using a protection time test device; the collected data is subjected to multivariate nonlinear regression fitting, a radioiodine filter cartridge protection time model is obtained, and the fitting model is as follows: x1 is a main factor influencing the protection time of the radioiodine filter cartridge in the working environment humidity, the working intensity and the radioiodine activity concentration; x2 and x3 are the other two secondary factors respectively; and substituting the working condition into the radioactive iodine filter cartridge protection time model to obtain the protection time of the radioactive iodine filter cartridge under the working condition. The method provided by the invention can promote the resource conservation of the radioactive iodine filter cartridge and reduce the cost of subsequent radioactive waste disposal.
Owner:YANGJIANG NUCLEAR POWER +1

Stannous sulfide-mesoporous silica material for adsorbing radioactive iodine and preparation method of stannous sulfide-mesoporous silica material

The invention discloses a preparation method of a stannous sulfide-mesoporous silica material for adsorbing radioactive iodine, which comprises the following steps: dissolving stannous chloride dehydrate, thiourea and PEG (polyethylene glycol) 1500 in a mixed solution of absolute ethyl alcohol and ethylene glycol, then adding mesoporous silica, heating and stirring to obtain a mixed solution; transferring the obtained mixed solution into a hydrothermal reaction kettle, carrying out hydrothermal reaction, then naturally cooling to room temperature, and washing to obtain the stannous sulfide-mesoporous silica material adsorbing radioactive iodine. The invention develops a novel efficient radioactive iodine adsorption material which has the advantages of low cost, high iodine adsorption capacity, easiness in macro preparation and the like, and a new material and a new method are provided for radioactive gaseous iodine treatment.
Owner:MIANYANG TEACHERS COLLEGE +1

Synthetic method of active antimony sulfide for gaseous radioactive iodine adsorption

A synthesis method of active antimony sulfide for gaseous radioactive iodine adsorption comprises the following steps: S1, mixing inorganic compound powder A, macrocyclic polyamine B and sulfur powder, putting the mixture into a container, and adding deionized water to obtain a mixture; s2, carrying out ultrasonic treatment on the mixture treated in the step S1, putting the mixture into a drying oven, and reacting for a certain time; and S3, after the reaction is finished, cooling to room temperature, filtering a product, and respectively washing with deionized water, a reagent G and a reagent F to obtain the three-dimensional framework active inorganic antimony sulfide. Through solvothermal reaction, the organic amine structure guiding effect is combined with ultrasonic vibration, the accumulation mode of the anion layer is directly influenced, then layered or open-frame crystals are formed, finally, a three-dimensional metal frame structure is formed, and the iodine adsorption saturation capacity is high.
Owner:THE 404 COMPANY LIMITED CHINA NAT NUCLEAR

Preparation method and application of triazine modified collagenous fiber iodine adsorbent

The invention relates to the technical field of nuclear medical radioactive waste treatment, and discloses a preparation method and application of a triazine modified collagenous fiber iodine adsorbent. The preparation method comprises the following steps: activating collagen fibers; and triazine modification: taking the activated collagenous fiber, adding water, triazine and a dialdehyde cross-linking agent, and stirring at 25-50 DEG C for 5-10 hours to obtain the triazine modified collagenous fiber iodine adsorbent. According to the application, the prepared triazine modified collagenous fiber iodine adsorbent is used for adsorbing radioactive iodine. According to the preparation method disclosed by the invention, triazine is grafted to the activated collagenous fiber through the Schiff base reaction of the dialdehyde cross-linking agent, and the collagenous fiber is endowed with a large number of N hybrid functional groups, so that the active sites of the obtained modified collagenous fiber adsorbent are remarkably increased, and iodine ions in iodine steam and a solution can be effectively adsorbed; the adsorbent can be used for adsorbing radioactive iodine in medical waste liquid and nuclear wastewater, the preparation method is simple, raw materials are wide in source and low in price, and industrialization can be achieved.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Radiopharmaceutical waste curing treatment method

The invention discloses a radiopharmaceutical waste curing treatment method which comprises the following steps: mixing expanded perlite and alumina powder, putting the mixture into a high-temperature furnace for heating, and carrying out high-temperature melting expansion to form closed-pore spherical vitrified micro-beads; the preparation method comprises the following steps: stirring and mixing closed-pore spherical glass beads, silica fume, nano-silica and an epoxy resin curing agent, and then adding a methylcellulose plasticizer and cerium oxide to form a base material; adding the pre-dried radiopharmaceutical waste into the base material, and uniformly stirring to form a mixture; injecting the mixture into a mold for molding and primary curing, and performing steam curing and environment curing after demolding to obtain a cured body; according to the present invention, the expanded perlite and the alumina powder are subjected to high temperature melting to prepare the closed-pore spherical vitrified micro-bead, the physical adsorption capacity of the porous structure of the closed-pore spherical vitrified micro-bead on the radioactive iodide ion is utilized, and the stable iodide generated by the aluminum element is combined to achieve the chemical bonding so as to reduce the iodine-131 escape problem in the high temperature environment;
Owner:SICHUAN HUAYI PHARM CO LTD

Phospholipid Ether Analogs for Imaging and Targeted Treatment of Pediatric Solid Tumors

It is disclosed herein that that certain alkylphosphocholine analogs are preferentially taken up by malignant pediatric tumor cells. The alkylphosphocholine analogs are compounds having the formula:or salts thereof, wherein n is an integer from 12 to 24; and R2 is —N+(CH3)3. The compounds can be used to treat pediatric solid tumors or to detect pediatric solid tumors. In therapeutic treatment, R1 includes a radioactive iodine isotope that locally delivers therapeutic dosages of radiation to the malignant pediatric tumor cells that preferentially take up the compound. In detection / imaging applications, R1 includes a detection moiety, such as a fluorophore or a radioactive iodine isotope.
Owner:WISCONSIN ALUMNI RES FOUND

Drug-loaded vesicle for treating thyroid cancer as well as preparation method and application of drug-loaded vesicle

The invention belongs to the technical field of biological medicines, and particularly relates to a drug-loaded vesicle for treating thyroid cancer as well as a preparation method and application of the drug-loaded vesicle. The drug-loaded vesicle comprises a vesicle, wherein a cavity of the vesicle is loaded with radioactive iodine; the membrane surface of the vesicle is modified with: a) a first single-chain antibody fragment capable of specifically binding to thyroglobulin; according to the present invention, after the intravenous injection, the drug-loaded vesicle can be enriched in the thyroid cancer lesion area of the RAIR-DTC patient, such that the cancer cell proliferation is inhibited while the radioactive iodine is continuously released so as to provide the long-term treatment effect;
Owner:XIEHE HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI & TECH UNIV

Adsorption material, forming method and application in radioactive iodine purification

The invention relates to an adsorption material, a forming method and application of the adsorption material in radioactive iodine purification. Wherein the adsorption material comprises polymer porous particles and an active powder adsorption material embedded in the inner walls of pore channels of the polymer porous particles; the polymer porous particles are formed by a phase inversion method. The invention mainly provides the adsorption material, on the basis that the polymer porous particles are used as a framework, and the active powder adsorption material is embedded in the surfaces of the pore channels of the polymer porous particles, on the one hand, the problem that the adsorption pressure drop is too large when the particles of the active powder adsorption material are directly stacked for adsorption operation is avoided, and the adsorption pressure drop is reduced; on the second aspect, the active powder adsorption material in the stack can be in rapid contact with an adsorbed medium, and the adsorption effect is improved; and on the third aspect, the damage to an adsorption powder structure when a powder extrusion forming process is adopted is avoided, and the stacking degree between powder materials is reduced.
Owner:CHINA INST FOR RADIATION PROTECTION

Developable embolic bead capable of loading radioactive iodine and negatively charged drug, preparation method therefor, and use thereof

PCT designated stageWO2025256408A1Surgical adhesivesPharmaceutical drugChemo therapy
Disclosed are a developable embolic bead capable of loading radioactive iodine and a negatively charged drug, a preparation method therefor, and a use thereof. The bead is a quaternary ammonium salt bead containing a catechol structure and elemental iodine, and can be loaded with radioactive iodine and a negatively charged drug. In the present invention, a quaternary ammonium salt bead containing a catechol structure is prepared, using a polyamine polymer or a hydrochloride thereof, a catechol monomer, and an iodine-containing monomer as primary raw materials; the bead can be loaded with radioactive iodine and a negatively charged drug, thereby achieving combined radiotherapy, chemotherapy, and embolization treatment, as well as development diagnosis, of tumors.
Owner:SOUTHEAST UNIV

Thiol-functionalized metal-organic framework materials, methods of making and using the same

The application discloses a thiol-functionalized metal organic framework material and a preparation method and application thereof, and aims at the urgent demand of efficient adsorption of radioactive iodine, combines supergravity synthesis technology with a post-synthesis modification strategy, and successfully prepares the thiol-functionalized metal organic framework material IRMOF-3-SH.The research of the application proves that the supergravity method can quickly synthesize the MOF material with regular crystal form and uniform particle size by strengthening the mass transfer and nucleation process, and further obtains the thiol-functionalized IRMOF-3-SH through the supergravity post-synthesis modification method, so that the iodine adsorption capacity is significantly improved to 3.00 g·g ‑1 , which is increased by 46% compared with the unmodified material, and the excellent cycle stability is exhibited.
Owner:QINGDAO UNIV OF SCI & TECH

Personalized low-iodine diet control system and control method based on artificial intelligence

PendingCN121439097AMedical data miningNutrition controlDiet controlledTotal thyroidectomy
The invention relates to the field of medical health, and provides a personalized low-iodine diet control system and control method based on artificial intelligence, a data management module collects patient basic information, an iodine content database, patient diet record data and patient examination data; the personalized low-iodine recommendation module generates a personalized low-iodine menu through a low-iodine diet algorithm according to the collected data, generates patient guidance suggestions and issues the patient guidance suggestions to the patient side; and the risk assessment and early warning module estimates the daily iodine intake of the patient according to the diet record data of the patient and the examination data of the patient, and performs risk assessment and early warning on the daily iodine intake of the patient in combination with the target daily iodine intake. According to the invention, personalized low-iodine diet control based on a food iodine content table, diet records and an intelligent algorithm can be realized for a patient subjected to radioiodine 131 treatment after a thyroid cancer total resection operation.
Owner:TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH

Phospholipid ether analogs for imaging and targeted treatment of pediatric solid tumors

It is disclosed herein that that certain alkylphosphocholine analogs are preferentially taken up by malignant pediatric tumor cells. The alkylphophocholine analogs are compounds having the formula:or salts thereof, wherein n is an integer from 12 to 24; and R2 is —N+(CH3)3. The compounds can be used to treat pediatric solid tumors or to detect pediatric solid tumors. In therapeutic treatment, R1 includes a radioactive iodine isotope that locally delivers therapeutic dosages of radiation to the malignant pediatric tumor cells that preferentially take up the compound. In detection / imaging applications, R1 includes a detection moiety, such as a fluorophore or a radioactive iodine isotope.
Owner:WISCONSIN ALUMNI RES FOUND

Synthesis method and application of high-efficiency iodine adsorption material

This invention belongs to the field of iodine adsorption material technology, and discloses a method for synthesizing and applying a highly efficient iodine adsorption material. The synthesis method includes: S1, adding an organic aldehyde ligand to a container, adding a solvent, and stirring to completely dissolve the aldehyde ligand; S2, slowly adding the above solution dropwise to an organic amine ligand solution to completely mix it with the amine ligand; S3, sealing the above mixed solution and stirring at room temperature until the color deepens; S4, after the reaction is complete, separating the reaction solution into small glass vials, tightening the caps, loosening them by half a turn, and placing them in a protective atmosphere; after several days of gas-liquid diffusion, visible crystals form at the bottom of the glass vials. The synthesized adsorption material has applications in volatile and radioactive iodine. The crystalline adsorption material synthesized by this invention has good stability, high adsorption efficiency for iodine, and a fast adsorption rate, and can be used for nuclear waste treatment and the capture of radioactive iodine.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI

Method for correcting detection efficiency of I-129 in radioactive iodine sampling carbon box

The invention belongs to the technical field of radiation monitoring, and particularly relates to a method for correcting the detection efficiency of I-129 in a radioactive iodine sampling carbon box, the specific distribution depth of radioactive substances can be obtained by measuring the counting rate of a to-be-detected activated carbon powder sample, and then the detection efficiency value at the depth is obtained through a function relation. The method is used for I-129 radioactive activity concentration calculation. And the detection efficiency of each carbon box sample after correction can be quickly obtained. According to the technical scheme, calculation of complex distribution parameters can be avoided, a correction value can be rapidly obtained from a curve for an actual sample through the constructed correction curve and function, accurate measurement of the I-129 radioactive activity concentration in the iodine sampling carbon box is achieved, an effective basis is provided for index emission control and atmospheric environment safety evaluation, and the method is suitable for industrial production. And the method still retains non-destructive analysis of the carbon box sample, and is simple to operate and high in timeliness.
Owner:THE 404 COMPANY LIMITED CHINA NAT NUCLEAR

Method for solidifying silver iodide, ceramic solidified body and use

ActiveCN118324494BRadioactive decontaminationSilver iodideSodium iodide
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.
Owner:FOSHAN UNIVERSITY

Method and system for estimating radioactive iodine distribution coefficient of pressurized water reactor

The invention discloses a pressurized water reactor radioactive iodine distribution coefficient estimation method and system, and relates to the technical field of pressurized water reactor serious accident analysis. The method comprises the following steps: calculating particle size distribution of liquid drops and distribution of a liquid film in a jet process to obtain a mass transfer area of the liquid drops and the liquid film; calculating the total mass transfer amount of radioactive iodine by taking the mass transfer area as input; solving the concentration of each iodide in the liquid phase according to the total mass transfer amount; and finally, combining the iodide total concentration with the radioactive iodine gas phase concentration to obtain a partition coefficient. The system correspondingly comprises an area module, a quality module, a concentration module and a coefficient module which are connected in sequence to realize the method function. According to the method, the precision problem caused by the fact that an existing program ignores the mass transfer effect of liquid drops and a liquid film is solved, the distribution coefficient can be accurately estimated, and a reliable basis is provided for radioactive consequence evaluation and source item analysis after a pressurized water reactor accident.
Owner:XI AN JIAOTONG UNIV

Application of iodine-containing composition in preparation of thyroid cancer treatment product

PendingCN121534078AMammal material medical ingredientsAntineoplastic agentsTumor angiogenesisBiochemical progression
The invention relates to the technical field of preparations for treating thyroid cancer patients, in particular to application of an iodine-containing composition in preparation of products for treating thyroid cancer. At present, a specific guidance scheme about the optimal iodine intake does not exist for patients with differentiated thyroid cancer (DTC), especially patients with structural persistent lesions after surgery and / or radioiodine treatment. In China, although definite evidences are lacked, a large number of patients still select lifelong low-iodine diets and try to avoid iodine-induced relapse. The application of the invention overcomes prejudice and proves that low-iodine diet can promote biochemical progress of thyroid cancer on the contrary, and iodine-suitable diet can better help patients with differentiated thyroid cancer to recover, inhibit RYR1 gene expression and weaken tumor angiogenesis and cell migration ability, thereby inhibiting tumor progress.
Owner:PEKING UNION MEDICAL COLLEGE HOSPITAL

A method for preparing iodine adsorbing material by using chrome leather scraps

This invention relates to a method for preparing iodine adsorbent materials using chromium leather scraps. The method uses chromium leather scraps as raw material, which are activated with alkali at 20-60°C for 2-10 hours. Then, a nitrogen-containing modifier and a dialdehyde crosslinking agent are added to the activated chromium leather scrap dispersion, and the mixture is stirred at 20-60°C for 4-12 hours. After filtration and drying, the iodine adsorbent material is obtained. This method grafts nitrogen-containing groups onto the collagen fibers of chromium leather scraps via a Schiff base reaction using a dialdehyde crosslinking agent, endowing them with a large number of active sites, giving them good adsorption capacity and stability, and enabling efficient adsorption in various iodine pollution scenarios (gaseous iodine, aqueous iodine). This method not only solves the problem of chromium leather scrap disposal but also provides a low-cost solution for the treatment of radioactive iodine pollution, aligning with the circular economy and green development concept of "using waste to treat waste." The process of this invention is simple, with no toxic reagent emissions, readily available and inexpensive raw materials, and is easy to scale up.
Owner:SICHUAN UNIV

Atinide metal organic framework material as well as preparation method and application thereof

The invention discloses an actinide metal organic framework material and a preparation method and application thereof, and the preparation method comprises the following steps: adding 2, 2 ': 6', 2 ''-terpyridine-4, 4 ', 4 ''-triformic acid and tetravalent actinide salt into a mixed solvent of an organic solvent and water, adding a nitric acid solution into the obtained mixed solution, carrying out solvothermal reaction at 100-140 DEG C, and carrying out vacuum drying to obtain the actinide metal organic framework material. The actinide metal organic framework material is obtained. According to the preparation method, the synthesis process is simple, convenient and efficient, the product yield is high, reactant types are simple, no additional by-product is generated in the reaction process, the prepared actinide metal organic framework material is excellent in structural stability, and an effective solution is provided for efficient capture and long-term safe storage of radioactive iodomethane in nuclear waste.
Owner:SUZHOU UNIV

A hierarchically porous carbon sponge for radioiodine adsorption and a preparation method thereof

The application discloses a kind of hierarchical porous carbon sponge for radioactive iodine adsorption and preparation method thereof, belong to functional material technical field.The pine needle of the present application is washed, dried and crushed, then is placed in crucible, carbonizes under nitrogen atmosphere, i.e.pine needle hierarchical porous carbon pre-carbonization precursor is obtained;The pre-carbonization precursor is ground and crushed to be uniformly mixed with potassium hydroxide, and an activated precursor mixture is obtained;The ground activated precursor mixture is placed in crucible, annealed under nitrogen atmosphere, washed to neutral, and then dried overnight, i.e.hierarchical porous carbon adsorption material is obtained;The hierarchical porous carbon adsorption material is mixed with sodium alginate and water to form a uniform suspension;Melamine sponge (MS) is immersed in the suspension, stirred until completely soaked, then taken out and immersed in calcium chloride solution, filtered, washed and vacuum dried to obtain hierarchical porous carbon sponge.The material of the present application shows extremely fast adsorption kinetics and extremely high adsorption capacity for gaseous iodine. The data of examples show that the adsorption equilibrium can be reached within 2.5 hours, and the maximum adsorption capacity is as high as 2.3 g / g.
Owner:JILIN INST OF CHEM TECH

Bismuth sulfide-chitosan composite hydrogel as well as preparation method and application thereof

The invention discloses bismuth sulfide-chitosan composite hydrogel as well as a preparation method and application thereof, and belongs to the field of radioactive wastewater treatment. The preparation method comprises the following steps: adding a hydrochloric acid solution into a chitosan aqueous solution, and uniformly mixing to obtain a chitosan acid solution; adding flower-like bismuth sulfide or tubular bismuth sulfide into the chitosan solution, and ultrasonically dispersing uniformly to obtain a mixed solution; and adding glutaraldehyde into the mixed solution, heating in a water bath at 30-50 DEG C to carry out a cross-linking reaction, and washing and freeze-drying a product after the reaction is completed to obtain the flower-like bismuth sulfide-chitosan composite hydrogel or tubular bismuth sulfide-chitosan composite hydrogel. The bismuth sulfide-chitosan composite hydrogel can effectively adsorb and separate IO3 <-> from a high-content coexisting anion system, and the problem that an existing adsorbent for removing radioactive iodine is poor in anti-interference capacity can be effectively solved.
Owner:LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS

Adsorption material for radioactive iodine as well as preparation method and application of adsorption material

The invention relates to the technical field of environmental protection, and discloses a radioactive iodine adsorption material and a preparation method and application thereof, the radioactive iodine adsorption material comprises cuprous sulfide and a metal organic framework loaded on the surface of the cuprous sulfide; the cuprous sulfide is snowflake-shaped cuprous sulfide. The radioactive iodine adsorbing material provided by the invention is mainly based on a chemical adsorption mechanism and is assisted by a physical adsorption mechanism to capture radioactive iodine, has excellent adsorption capacity on gaseous and liquid iodine, and is expected to become an effective radioactive iodine trapping agent in a spent fuel post-treatment process.
Owner:NANJING UNIV OF SCI & TECH

Preparation method of amino acid metal cation adsorption material and application thereof

This invention discloses a method for preparing an amino acid-based metal cation adsorbent and its application. This invention belongs to the technical field of radioactive waste gas treatment and functional adsorbent materials. The amino acid-based metal cation adsorbent prepared by this invention is a composite material in which an amino acid-based metal cation ionic liquid is mounted on a three-dimensional porous substrate. Through the synergistic mechanism of mass transfer from the three-dimensional porous substrate and chemical complexation and physical dissolution of the ionic liquid, it achieves efficient capture and irreversible fixation of elemental iodine (I2) and iodine aerosol in nuclear medical waste gas. The material is prepared under mild conditions, without the need for high temperature and high pressure, has stable chemical properties, and the production process is green, pollution-free, and easy to control. It exhibits excellent application effects in the fields of nuclear medical iodine waste gas and iodine aerosol purification, providing an efficient, low-cost, and easily industrialized solution for the treatment of radioactive iodine waste gas in nuclear medical settings.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Preparation method and application of MOFs-based double-scale polyimide three-dimensional network nanofiber membrane

The application discloses a preparation method and application of a MOFs-based double-scale polyimide three-dimensional network nanofiber membrane, and comprises the following steps: calcining a double-scale three-dimensional network PAA fiber membrane in an inert atmosphere to obtain a double-scale three-dimensional network PI fiber membrane; and immersing the double-scale three-dimensional network PI fiber membrane in a mixed solution of a zinc salt, an organic ligand and a solvent B, so that MOFs grow in situ on the fiber membrane, and then drying to prepare the MOFs-based double-scale polyimide three-dimensional network nanofiber membrane. The MOFs-based double-scale polyimide three-dimensional network nanofiber membrane is used as a filter layer to prepare a MOFs-based double-scale nanometer network radioactive iodine aerosol protective mask. The MOFs-based double-scale nanometer network radioactive iodine aerosol protective mask has the characteristics of good stability, high iodine gas adsorption capacity, excellent filtration efficiency and good air permeability. The mask has potential application prospects in the fields of adsorption and purification of radioactive iodine gas and protection of radioactive aerosol in the nuclear industry and nuclear accident emergency.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Radioactive iodine-131 ion photocatalytic oxidation-adsorption integrated covalent organic framework material and preparation method and application thereof

This invention discloses a covalent organic framework material, its preparation method, and its application, belonging to the technical field of radionuclide processing materials. This COFs serves as... 131 I ‑ The application of the removal material specifically includes: mixing COFs with a guest molecule solution; and removing Na... 131 Add aqueous solution to the above solution, let stand under light, centrifuge, and collect COFs to achieve the determination of COFs in the solution. 131 I ‑ Removal; This COF material, driven by guest molecules, significantly increases singlet oxygen production, thereby enhancing oxidation. 131 I ‑ This material possesses the ability to generate I2, achieving highly efficient adsorption and photocatalysis of radioactive iodine ions. It is economical, environmentally friendly, and stable, suitable for various applications, and provides a novel solution for designing efficient reactive oxygen species generation and adsorption of radioactive iodine-131 ions.
Owner:SOUTHWEAT UNIV OF SCI & TECH