277 results about "Adsorption selectivity" patented technology

The invention relates to a phenolic resin modified carbon molecular sieve and a preparation method and application thereof, and belongs to the technical field of adsorbents. The technical problem to be solved by the invention is to provide the phenolic resin modified carbon molecular sieve, and the adsorption selectivity is improved. The method comprises the following steps: a, in-situ polymerization: mixing phenolic resin polymerization mother liquor with a carbon molecular sieve, standing for adsorption, and heating the adsorbed carbon molecular sieve for polymerization reaction to obtain a polymerization product; the phenolic resin polymerization mother liquor comprises a phenolic substance, an aldehyde substance and a solvent; and b, carbonization modification: roasting the polymerization product in a protective atmosphere to obtain the phenolic resin modified carbon molecular sieve. The carbon molecular sieve is modified through phenolic resin in-situ polymerization, and the method is simple, low in cost, high in reaction controllability and suitable for industrial production. The phenolic resin modified carbon molecular sieve has selective adsorbability, can be applied to an N2 / CH4 system, selectively adsorbs N2, and is high in separation ratio and good in stability.

The invention belongs to the field of hydrometallurgy, and particularly relates to a preparation method of a chromium-doped manganese lithium ion sieve and application of the chromium-doped manganese lithium ion sieve in lithium extraction. The preparation method comprises the following steps: by taking a lithium source, a manganese source and a chromium source as raw materials, synthesizing a chromium-doped spinel type lithium ion sieve precursor through a high-temperature solid-phase method, and further performing acid leaching treatment, thereby obtaining the ion sieve with high adsorption selectivity and low manganese solution loss. The method is simple in process and low in cost, and the prepared chromium-doped manganese lithium ion sieve is stable in crystal structure and low in manganese solution loss rate. The developed chromium-doped manganese lithium ion sieve is suitable for efficient extraction of lithium resources of salt lake brine, and a low-cost solution is provided for efficient extraction of the lithium resources of the salt lake.

The invention relates to an acylhydrazone bond-connected covalent organic framework material, in particular to an acylhydrazone bond-connected covalent organic framework material as well as a preparation method and application thereof, and aims to overcome the defects of various materials for adsorbing Pd (II) in one aspect or the defects of poor stability and durability in high-acidity and high-radioactivity environments. Or the adsorption selectivity on Pd (II) is not strong. As an emerging crystalline organic porous polymer, the covalent organic framework is mainly formed by connecting pure organic structural units through dynamic covalent bonds, has the advantages of permanent high porosity, low density, high chemical stability, high thermal stability and the like, and is expected to realize Pd (II) adsorption in strong acid and ray irradiation environments.

The invention discloses a nano flower-shaped covalent organic framework material as well as a preparation method, a device and application thereof, and belongs to the field of water treatment. An amino compound and an aldehyde group compound form a covalent organic framework structure with a specific flower-shaped structure under the action of a catalyst and a regulating agent, the covalent organic framework structure continues to react with a carboxyl compound, then metal is loaded, and the nano flower-shaped covalent organic framework material is obtained. Carboxyl in the carboxyl compound responds to uranium in water and does not respond to other metal ions, other interference ions are eliminated, in addition, the carboxyl compound further has sulfydryl which can fix subsequently-loaded metal ions, the loading capacity of the metal ions is improved, and the metal ions can be loaded on the surface of the metal ions in the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface of the surface. When the nano flower-shaped covalent organic framework material prepared by the method is used for treating water, uranium ions can quickly reach adsorption sites, and the material as an adsorbent is higher in stability and higher in adsorption selectivity.

The invention relates to high-pore-volume nitrogen-doped activated carbon for capturing carbon dioxide and a preparation method of the high-pore-volume nitrogen-doped activated carbon, and belongs to the technical field of activated carbon. In order to solve the problem that high nitrogen content and high pore volume of nitrogen-doped activated carbon are not matched, the invention provides a preparation method of high-pore-volume nitrogen-doped activated carbon for carbon dioxide capture. In the preparation process of the activated carbon, an activating medium composed of a carbon source and an activating agent and a nitrogen-containing precursor are respectively laid in different mutually isolated areas in a crucible, so that the carbon deposition effect of the nitrogen-containing precursor is weakened, the high pore volume of the activated carbon is maintained, the nitrogen content of the activated carbon is improved, and the high CO2 adsorption capacity and the high CO2 / N2 adsorption selectivity are obtained at the same time. When the high-pore-volume nitrogen-doped activated carbon prepared by the method is applied to the field of industrial CO2 trapping, high CO2 adsorption capacity can be obtained, and high CO2 purity in desorbed gas can be guaranteed.

The invention discloses a simulated screening and process optimization method of an anhydrous hydrogen fluoride desulfurization adsorbent, and relates to the technical field of anhydrous hydrogen fluoride, and the method comprises the following steps: constructing a database, and establishing a basic screening library; constructing an intelligent screening engine, and performing force field parameter correction on the materials in the basic screening library to capture a high-polarity solvent effect; calculating and extracting adsorption selectivity, Henry coefficients and working capacity indexes, and screening out a primary candidate material set; a core candidate material is optimized; determining an optimal adsorbent model; the microscopic adsorption data of the optimal adsorbent model are converted into macroscopic process parameters, the macroscopic process parameters are imported into a macroscopic process simulator for prediction, and process optimization is completed. According to the method, the strong polar solvent effect is simulated by constructing the corrected force field environment, and high-throughput screening of the adsorption materials is achieved in combination with an active learning strategy; an electronic grade refinement and modification strategy is utilized to optimize adsorption sites, and microcosmic adsorption data and a macroscopic mass transfer model are coupled to realize accurate prediction and optimization of an adsorption process.

The present application relates to a kind of phosphine oxy group covalent modification composite adsorption material and its preparation method and purposes, the preparation method includes the following steps: (1) mixing dopamine hydrochloride, phosphine-containing substrate, tris-hydroxymethyl aminomethane hydrochloride and sodium hydroxide in solvent, to obtain mixed solution;(2) the mixed solution obtained in step (1) and solid phase material are mixed, then oscillation reaction is carried out, to obtain solid-liquid mixture;(3) the solid-liquid mixture obtained in step (2) is carried out solid-liquid separation, and the solid phase part obtained is sequentially washed and dried, to obtain phosphine oxy group covalent modification composite adsorption material.The phosphine oxy group covalent modification composite adsorption material provided by the present application has excellent adsorption selectivity and material stability, and can be used for the high-selectivity separation and recovery of rare metals indium and gallium.

The invention discloses a carboxyl-functionalized porous organic polymer, a preparation method thereof and application of the carboxyl-functionalized porous organic polymer in ammonia gas adsorption separation and sensing. The polymer is obtained by free radical polymerization, hydrolysis and acidification of monomers containing vinyl and ester groups, and has a mesoporous structure and a skeleton carboxyl functional group. The preparation method is simple and mild in condition. The polymer has excellent adsorption selectivity and high adsorption capacity on ammonia gas, the static adsorption capacity on the ammonia gas under the conditions of 298 K and 1 bar is not lower than 6.5 mmol / g, the ammonia gas can be efficiently separated from NH / N / H and NH / COs mixed gas, and the cycling stability is good. An ammonia gas sensor prepared by taking the graphene oxide as a sensitive material has linear or piecewise linear response to ammonia gas with the concentration of 1-100 ppm at room temperature, the detection limit is lower than 30 ppb, and the selectivity is excellent. The invention overcomes the defects of the existing ammonia gas adsorption separation material and sensor, has important significance for optimizing the ammonia production process and reducing pollution, and has wide application prospects.

The invention relates to the technical field of environmental engineering, and particularly discloses an underground water remediation and activity monitoring system based on a zero-valent iron-based nano material, which comprises composite nano particles consisting of a zero-valent iron core, a ferrous sulfide / humic acid dynamic compensation layer and a temperature-sensitive polymer, through a crack self-adaptive regulation and control module driven by a sensor array and a temperature difference driving migration module based on an underground water temperature gradient, the system can realize automatic circulation of selective adsorption, desorption and degradation of pollutants under different temperature conditions through the combined action of a phase change behavior of a temperature-sensitive polymer and a dynamic compensation layer; the stability and the repair efficiency of the nanoparticles are improved; compared with a traditional scheme, the method has the advantages that on-demand response activity adjusting capacity and an accurate injection path guiding mechanism are achieved, the technical bottlenecks that in the groundwater heterogeneous environment, migration of a repairing agent is uncontrollable, and adsorption selectivity is poor are avoided, and good engineering adaptability and practical application prospects are achieved.

The invention relates to an adsorbent based on an X molecular sieve and preparation and application thereof, and a preparation method of the adsorbent comprises the following steps: (1) mixing the X molecular sieve with a binder, molding and roasting to obtain a molded body; (2) treating the molded body obtained in the step (1) with an alkali solution to perform in-situ crystallization on the binder in the molded body to obtain a crystallized product; (3) carrying out partial barium ion exchange on the crystallized product obtained in the step (2) by using a barium salt solution, and drying to obtain a dried product; (4) carrying out ammonium ion exchange on the dried product obtained in the step (3) by using an ammonium salt solution, and roasting in a flowing atmosphere to obtain a roasted product; and (5) performing barium ion exchange and optional potassium ion exchange on the roasted product obtained in the step (4), and then drying to obtain the adsorbent. The adsorbent has at least two kinds of mesoporous channels with different apertures, has high barium ion exchange capacity, high adsorption capacity and compressive strength, and shows good adsorption selectivity and mass transfer performance when used for adsorption separation of p-xylene.

The invention relates to application of a covalent organic framework material in preparation of a blood perfusion adsorbent, and the covalent organic framework material not only can adsorb toxins in blood with high adsorption capacity, but also has the advantages of excellent adsorption selectivity, low hemolysis rate, protein adhesion resistance and the like.

The invention discloses a molecularly imprinted adsorption material taking a metal organic framework as a carrier skeleton as well as a preparation method and application of the molecularly imprinted adsorption material, and belongs to the technical field of adsorption materials. The preparation method comprises the following steps: carrying out hydrothermal reaction on transition metal salt and a phthalic acid ligand to obtain metal organic framework nanoparticles; the preparation method comprises the following steps: adsorbing flavonoid template molecules by metal organic framework nanoparticles, mixing with lysozyme and a disulfide bond reducing agent, performing phase change polymerization, and eluting to remove the flavonoid template molecules after the phase change polymerization is completed, thereby obtaining the molecularly imprinted adsorbing material with abundant imprinting sites and good stability. The adsorbent is good in flavonoid compound adsorption selectivity, high in rate, large in capacity, good in chemical stability, resistant to acid washing, capable of being recycled for multiple times and capable of being widely applied to extraction and separation of flavonoid compounds.

The invention discloses a carbon-based polycyclic aromatic hydrocarbon adsorbent and a preparation method and application thereof.The preparation method comprises the steps that firstly, a mixture of a pretreated coconut shell material and a modifier is subjected to high-temperature treatment to obtain a carbonized material, then the carbonized material is immersed in an activating solution to be subjected to low-temperature treatment, and then filtering, washing to be neutral and drying in the shade at the room temperature are conducted to obtain the carbon-based polycyclic aromatic hydrocarbon adsorbent. Carrying out secondary high-temperature treatment to obtain an activated material; and crushing and sieving the activated material to obtain the carbon-based polycyclic aromatic hydrocarbon adsorbent. The carbon-based polycyclic aromatic hydrocarbon adsorbent has obvious advantages in the selective adsorption and removal process of polycyclic aromatic hydrocarbon, silicon species are introduced in the carbonization process, a microporous structure in a carbon material is destroyed in a pillared mode, then the pore structure of the catalyst is regulated and controlled, the mesoporous structure is richer, and the adsorption selectivity of the polycyclic aromatic hydrocarbon is improved; the adsorbent has high adsorption capacity and adsorption selectivity.

The invention discloses a coal bed gas exploitation and separation utilization method based on SCCO2 assistance, and belongs to the technical field of coal bed gas development. Supercritical carbon dioxide is prepared through a high-pressure reaction kettle and stored in a supercritical carbon dioxide storage and collection tank, meanwhile, nitrogen mixed with graphene is introduced, and CO2 / CH4 adsorption selectivity is enhanced by means of the characteristic that the specific surface area of graphene is large. A variable-frequency sound wave diffuser is matched to excite coal seam micro cracks through low-frequency sound waves, and supercritical carbon dioxide and nitrogen mixed gas is injected into a coal seam injection well. In the injection process, the sound wave diffuser synchronously radiates high-frequency sound waves to improve the displacement efficiency, then the gas enters the gas separation tower integrated with the molecular sieve membrane, and the produced gas is divided into upper methane, middle carbon dioxide and other bottom miscellaneous gas. Methane is pressurized by an air compressor and then stored in a methane storage tank, carbon dioxide is purified and pressurized and then recycled for coalbed methane exploitation, and offensive gas is cooled and stored after generating power by a steam turbine. And efficient mining, separation and multi-path utilization of the coal bed gas are realized.

The invention relates to a calcium-based desulfurizer and a preparation method and application thereof, and relates to the technical field of desulfurizers, the calcium-based desulfurizer comprises a calcium-based carrier with a micropore-mesopore-macropore three-level pore structure, and a gamma-aminopropyltriethoxysilane modifier dispersed in pore channels, the molecular imprinting layer is modified by an inactive region on the inner wall of the mesoporous; the preparation method comprises the steps of calcium-based carrier pretreatment, composite pore forming, pre-roasting, hydroxyl strengthening and the like. The efficient mass transfer system is constructed through a three-stage pore structure, the modifier and the molecular imprinting layer synergistically improve the structural stability and the sulfur dioxide adsorption selectivity, the calcium base utilization rate and the desulfurization efficiency are improved, and the industrial flue gas desulfurization requirement is met.

The invention relates to the technical field of petrochemical wastewater purification treatment, in particular to a high-selectivity composite adsorption material for petrochemical wastewater treatment and a preparation method thereof, and the preparation method comprises the following steps: dispersing sodium bentonite in deionized water, adding an intercalator, and reacting to obtain pretreated bentonite; dispersing the pretreated bentonite in an ethanol aqueous solution, adding trithiol-s-triazine trisodium salt, and reacting to obtain sulfydryl modified bentonite; the sulfydryl modified bentonite is dispersed in ethyl alcohol, an amino silane coupling agent is dropwise added, and aminated bentonite is obtained through a reaction; the preparation method comprises the following steps: dispersing aminated bentonite into anhydrous tetrahydrofuran, and adding gamma-butyl selenolactone for reaction to obtain the composite adsorption material. According to the prepared composite material, through the synergistic effect of multiple adsorption mechanisms, the adsorption selectivity and bonding strength of metal ions in petrochemical wastewater are remarkably improved, and a technical support is provided for precise purification treatment of the petrochemical wastewater.

The invention discloses a hydrophobic modification method of an Al-based metal organic framework material. According to the hydrophobic modification method of the Al-based metal organic framework material provided by the invention, the Al-based metal organic framework material and polydimethylsiloxane (PDMS) are placed in a high-temperature and closed environment to react for 20-120 minutes, so that the polydimethylsiloxane can coat the surface of the Al-based metal organic framework material with small molecular silane in a vapor deposition manner. On one hand, the method is short in time consumption, simple to operate and easy to control, hydrophobic modification of the Al-based metal organic framework material can be achieved within a short time, and good repeatability is achieved; on the other hand, the hydrophobicity of the Al-based metal organic framework material can be remarkably improved on the basis that the original pore structure of the Al-based metal organic framework material is reserved to the maximum extent, and then the adsorption selectivity of the Al-based metal organic framework material to VOC is greatly improved.

This invention discloses a passive adsorption-selective catalytic reduction (CCR) device for diesel vehicles, comprising an electronically controlled nozzle, a first mixing chamber, a pre-catalytic oxidation-reduction chamber, a second mixing chamber, and a post-catalytic oxidation-reduction chamber arranged sequentially. The first mixing chamber includes a first urea solution inlet, a V-shaped breaker wall, and a W-shaped bottom mixing chamber. The V-shaped breaker wall is fixed to the rear wall of the first urea solution inlet pipe. The W-shaped bottom mixing chamber includes an inner cavity and an outer cavity. The inner cavity wall has staggered array openings, and the inner and outer cavities are connected through these openings. A guide wall structure is connected to the outermost pipe at the end of the first mixing chamber. The CCR chamber is connected to the end of the guide wall, and a three-zone integrated catalyst is located inside the CCR chamber. This invention solves the problems of severe NOx escape during the cold start phase, system complexity, and low-temperature urea crystallization in existing selective catalytic reduction technologies.

The invention relates to a preparation method and application of a PAM / PB / PAO dual-network hydrogel adsorption material with flexibility and uranium adsorption selectivity. The invention relates to a preparation method and application of a PAM / PB / PAO dual-network hydrogel adsorption material. The technical problems that an existing hydrogel uranium adsorption material is poor in mechanical property, uneven in functional group distribution, low in adsorption selectivity in an actual complex water body and insufficient in cycling stability are solved. The method comprises the following steps: carrying out radiation crosslinking treatment to obtain PAM / PB / PAN composite hydrogel; and carrying out amidoximation reaction to obtain the PAM / PB / PAO dual-network hydrogel adsorption material. The material has excellent anti-fatigue property, high adsorption capacity and good cycle stability, and shows remarkable adsorption selectivity on uranyl ions in the presence of various competitive ions. The PAM / PB / PAO dual-network hydrogel adsorption material with flexibility and uranium adsorption selectivity prepared by the invention is applied to the field of uranium adsorption in radioactive waste liquid.

The invention discloses a preparation method of a molecularly imprinted membrane assembly material, the molecularly imprinted membrane assembly material and a nanowire / nanosheet heterojunction, and belongs to the technical field of water pollution control. According to the preparation method, an Eu / CuO / Bi2O2Se nanowire / nanosheet heterojunction is constructed by taking an Eu / CuO nanowire as a precursor, finally, the molecularly imprinted membrane assembly material for specifically recognizing PFASs is prepared by taking PFASs as a template molecule through cross-linking polymerization and template desorption, efficient and selective removal of PFASs is realized through a specific capture effect, and the prepared molecularly imprinted membrane assembly material has a good application prospect. The problems that a traditional material is low in adsorption selectivity and insufficient in degradation efficiency are solved, and the composite material is suitable for degrading perfluoroalkyl pollutants in a complex environment, has the advantages of being high in stability, environmentally friendly, capable of being repeatedly used and the like, and has wide market prospects.

The invention belongs to the technical field of adsorption material preparation, and relates to an anion defect type prussian blue analogue and a preparation method and application thereof in cesium adsorption.The preparation method comprises the steps that imidazole and halogenated alkane are subjected to an alkylation reaction and anion exchange to prepare ionic liquid, and after water is added, an ionic liquid-water mixed solvent is obtained; the method comprises the following steps: respectively dissolving transition metal nitrate and potassium ferrocyanide into an ionic liquid-water mixed solvent, dropwise adding a potassium ferrocyanide solution into a transition metal nitrate solution, and stirring to obtain a mixed solution; and carrying out hydrothermal reaction on the mixed solution, cooling to room temperature, washing the material, and drying to obtain the anion defect type prussian blue analogue. The cesium ion adsorption capacity and the cesium ion cycling stability are improved by precisely regulating and controlling anion defects in the Prussian blue analogue, and the cesium ion adsorption material has good ion interference resistance in a complex water environment and shows excellent adsorption selectivity and a wide application range.

The present invention discloses a molecular sieve with a point screening structure, a preparation method thereof, and an application thereof in the adsorption separation of propylene and propane. The molecular sieve of the present invention is composed of 1,2-ethanedisulfonate anion, 4,4'-dipyridyl sulfide and Cu 2+ Formed by coordination bonds, chemical formula [MSL2] ∞ , where M represents Cu 2+ , S represents 1,2-ethanedisulfonate anion, L represents 4,4'-dipyridyl sulfide, and ∞ represents that the molecular sieve is formed by several structural units composed of MSL2 and expanded in space; the molecular sieve of the present invention has local point-like pore contraction. Preparation method: Cu 2+ A molecular sieve having a point-sieving structure is prepared by mixing a source, 1,2-ethanedisulfonate, and 4,4'-dipyridyl sulfide in a reaction solvent. The present invention has outstanding advantages such as good material stability, high adsorption selectivity, high adsorption capacity, high adsorption rate, and easy regeneration, and has good industrial application prospects.

The invention discloses a preparation method of functionalized UiO-66 for ammonia adsorption, belonging to the field of adsorption and purification of toxic and harmful gases. By introducing a small amount of lower alcohols and monocarboxylic acid ligands into the precursor for ultra-fine regulation, the synergistic effect of the two can effectively stabilize the precursor, regulate the balance between the nucleation and growth of MOFs, and make the material have higher crystallinity and more stable products. On this basis, after eluting the unstable ligands with acid, while increasing the porosity and specific surface area of the material, the original ultra-microporous structure (0.6 nm) is maintained, which hinders the adsorption of larger gases such as N2 and CO2, and exhibits excellent adsorption selectivity for NH3. The functionalized UiO-66 material prepared by this invention not only has a large specific surface area and high ammonia adsorption performance, but also has a simple preparation process, stable products, good crystallinity, and is easy to industrialize.

The invention discloses a biochar-loaded red mud adsorbing material and a preparation method and application thereof, and belongs to the technical field of biochar materials, and the biochar adsorbing material loaded with red mud particles is obtained by pyrolyzing peanut shell powder impregnated with red mud. Red mud is loaded on the surface of biochar, the specific surface area and the number of surface functional groups of the adsorption material are increased, the adsorption performance and the adsorption selectivity of the biochar are improved, red mud particles are effectively dispersed through the stable carbon structure of the biochar, the total adsorption sites of the adsorption material are increased, and therefore the strength structure and the adsorption efficiency of the red mud are improved; further, rapid and massive absorption of lead ions is realized, and excellent performance is shown in efficient lead removal in industrial wastewater.

The application mixes NaX type molecular sieve with kaolin mineral as a binder, then rolls into a ball, calcines at high temperature, converts kaolin into metakaolin, then treats with alkali, converts into X type molecular sieve in situ, then ion exchanges to prepare high selective adsorbent. The prepared adsorbent has high trimethylbenzene adsorption selectivity, compression strength and bulk density.

The invention relates to the technical field of biological adsorbents, in particular to a protein nanofiber membrane zearalenone adsorbent and a preparation method thereof. According to the invention, zein is dissolved in an ethanol water solution, and then a film is prepared by an electrostatic spinning technology, so that a novel ZEN adsorbent is obtained. Compared with a traditional adsorbent, the adsorbent obtained based on the electrostatic spinning technology has the advantages that the specific surface area and adsorption sites are high, mass transfer pores are controllable, the composite design has adsorption selectivity, good flexibility and self-supporting characteristics, and the adsorbent can be accurately processed and integrated in various application scenes. The prepared adsorbent is low in raw material cost, simple and convenient in preparation process, free of toxic organic substances, easy to produce on a large scale, remarkable in ZEN adsorption effect and good in application prospect.

The application discloses an Ag-ZSM-5 molecular sieve adsorbent for separating and adsorbing Fischer-Tropsch synthesis oil alkane and alkene, which comprises Ag, a binder and ZSM-5 molecular sieve, and the mass ratio of Ag, the binder and ZSM-5 molecular sieve is (1-10):(10-20):(70-89). The preparation method comprises the following steps: alkali treatment, agglomeration molding, drying and calcination, silver ion exchange, drying and calcination. In the application, Ag is impregnated and loaded on the ZSM-5 molecular sieve, the pi complexation of Ag to the double bond of alkene and the high silicon-aluminum ratio (Si / Al=44-46) of the ZSM-5 molecular sieve are fully utilized, the adsorption selectivity to alpha-alkene is improved, the isomerization and oligomerization reactivity of alpha-alkene in the adsorption separation process is reduced, the adsorbent for separating and adsorbing Fischer-Tropsch synthesis oil alkane and alkene to produce high-purity alpha-alkene is prepared, and the adsorbent has the characteristics of high adsorption capacity, high alpha-alkene selectivity, fast adsorption and desorption rate, small desorption agent consumption and low separation energy consumption.

The present invention belongs to the field of the development of new adsorbents and comprehensive utilization of resources, and discloses a preparation method of an inorganic tin sulfide adsorbent and its application in cesium extraction. The adsorbent is synthesized by a hydrothermal method and has a lamellar structure. It has excellent ion exchange performance for alkali metal cesium ions in an aqueous solution and exhibits excellent adsorption selectivity. The adsorbed material can be regenerated, thus realizing the recycling of the adsorption material. The preparation process of the adsorption material provided by the present invention is simple and low in cost. Therefore, the adsorption material prepared by the present invention can be used for the extraction of cesium in geothermal water, salt lake brine, and underground brine, and can also be applied to the separation and extraction of cesium in solid cesium ore or associated ore leaching solutions.

The invention discloses an amino-functionalized titanium-based nanopore material and a preparation method thereof, and belongs to the technical field of waste gas treatment.The preparation method comprises the steps that a titanium sheet is subjected to anodic oxidation twice to generate a chromium-doped titanium dioxide nanotube, and then amino-functionalized titanium MOF grows on the surface of the nanotube in situ through a solvothermal reaction; the preparation method comprises the following steps: firstly, preparing amino-functionalized titanium-based composite powder, synthesizing silicon dioxide nanospheres through a sol-gel method, carrying out surface fluorination on perfluorodecyltrimethoxysilane to obtain a super-hydrophobic layer, modifying the amino-functionalized titanium-based composite powder through a silane coupling agent KH550, and finally, loading the fluorinated silicon dioxide nanospheres on the surfaces of the composite microspheres through electrostatic adsorption to obtain the super-hydrophobic coating. The amino-functionalized titanium-based nanopore material is obtained; the high adsorption capacity, wide-spectrum adsorption selectivity, good photocatalytic performance and good stability of the nanopore material are realized.

The invention relates to the technical field of water treatment, and discloses a method and a device for recycling bromine triions based on irradiation coupling electronic control ion exchange and application, the method comprises the following steps: placing a bromine-containing stock solution in an electronic control ion exchange device which is a single-chamber device, irradiating the bromine-containing stock solution by using gamma rays, bromine ions in the bromine-containing stock solution are oxidized and react to form bromine triions; and then switching on a circuit and applying an oxidation potential to the working electrode to drive the bromine triions to directionally move towards the membrane and adsorb the bromine triions, and selectively recovering the bromine triions. The device comprises a single-chamber reactor, a liquid path system, a gamma-ray irradiation source for the single-chamber reactor, an electrochemical driving system, a two-electrode system with electrodes immersed in a bromine-containing stock solution, and a potential control system.