35 results about "Strontium ions" patented technology

The invention provides a positive electrode electrolyte, a preparation method of the positive electrode electrolyte and a flow battery, the positive electrode electrolyte comprises: an active material suitable for providing positive pentavalent vanadium ions; a dispersant; the cations comprise at least one of calcium ions, magnesium ions, sodium ions, barium ions, strontium ions and ammonium ions; and chloride ions. Therefore, the positive electrode electrolyte has relatively good stability, the solubility and the dispersity of positive pentavalent vanadium ions in the positive electrode electrolyte can be improved, precipitation is avoided, and the capacity and the energy density of the battery are further improved.

This invention discloses a softening treatment device and method for high-temperature oilfield wastewater, relating to the field of wastewater treatment technology. Oilfield wastewater enters a pre-desorption tank for impurity removal. The barium-strontium adsorption tank contains, from top to bottom, a fine quartz sand layer, a chelating resin layer, and a coarse quartz sand layer. The silicate pre-desorption tank contains an acid-base regulator, a dispersant, and a magnesium oxide suspension. The carbonate softening tank contains a dispersant, a coagulant aid, a soda ash solution, and a chelating agent. The stabilizing tank contains, from top to bottom, a modified activated carbon layer and an exchange resin layer. This invention uses the pre-desorption tank to initially separate oil, suspended solids, and corrosion products. A specialized chelating resin selectively adsorbs barium-strontium ions. In the silicate pre-desorption tank, pH is precisely controlled and magnesium oxide is added to directionally generate settleable magnesium silicate flocs. In the carbonate softening tank, crystal form control and coagulation aid work synergistically to promote the precipitation of calcium and magnesium in the form of large calcite particles.

A coated nanocluster (10) comprises: a core (20) including an aggregate of magnesium oxide particles; and a shell (30) covering the core (20). The shell (30) has a coating layer (31) containing at least one of a nitrate and a nitrite, and carbonate particles (32) dispersed in the coating layer (31). At least one of the nitrate and the nitrite contains an alkali metal ion. The carbonate particles (32) contain at least one selected from a calcium ion, a strontium ion, and a barium ion. The molar ratio of the carbonate particles (32) constituting the shell (30) to the magnesium oxide particles constituting the core (20) is more than 0.005 and 0.015 or less.

The application relates to a strontium mineralization filter element and a preparation method thereof and a water purifier. The strontium mineralization filter element comprises an inner layer and an outer layer arranged on the outer surface of the inner layer, the outer layer is used for being communicated with a water inlet, the inner layer is used for being communicated with a water outlet, the inner layer comprises silicate ore powder, and the outer layer comprises strontium ore powder; the mass ratio of the strontium ore powder to the silicate ore powder is 1-6:1. The strontium mineralization filter element can adjust the inhibition effect of silicate on the dissolution of strontium ions during the static state of the strontium mineralization filter element, so that the strontium ion concentration of the first cup of water after the strontium mineralization filter element is static can meet the safety upper limit requirement, and the strontium concentration of the produced water during the water passing period of the strontium mineralization filter element can meet the design lower limit requirement.

This invention discloses a tetrachloroaluminate-modified type A molecular sieve, its preparation method, and its application. The invention uses fly ash cenospheres as the main raw material to prepare a type A molecular sieve. Through modification with a mixture of fly ash and tetrachloroaluminate, it exhibits excellent adsorption performance for cobalt, cesium, and strontium ions. The type A molecular sieve prepared in this application has a good synergistic effect with tetrachloroaluminate, effectively solving the problems of complex processes, high costs, and poor adhesion of existing molecular sieve adsorbent preparation methods in the market. 137 Cs, 60 Co, 90 This method addresses the problem of low adsorption rates of major hazardous nuclides in radioactive wastewater such as Sr, and can be used to adsorb radionuclides in nuclear wastewater.

The invention discloses a preparation method and an application of a bone targeting catechin-strontium metal polyphenol nano particle. The system takes a metal-polyphenol network (MPN) formed by coordination self-assembly of strontium ions and catechin as a core, and tetracycline is modified on the surface of the MPN to construct a bone targeting functional layer. The MPN structure can significantly enhance the loading efficiency and physiological stability of catechin, and the tetracycline modification on the surface endows the nanoparticles with excellent bone targeting ability. When reaching an osteoporosis focus, the nanoparticles can respond to a local weakly acidic microenvironment and controllably release catechin, and exert antioxidant and anti-inflammatory effects, thereby reversing a pathological microenvironment unfavorable for bone regeneration. Meanwhile, the MPN skeleton is gradually degraded in vivo, and the released Sr < 2 + > can promote proliferation and differentiation of pre-osteogenic cells, inhibit the activity of osteoclasts and promote formation of new bones. The system integrates bone targeting, microenvironment response drug release, immunoregulation and ion regulation treatment, and provides a new strategy for precise treatment of osteoporosis.

The invention provides a preparation method and application of a fiber material with a nanopore structure. The preparation method of the fiber material with the nano-pore structure comprises the following steps: preparing polyether-ether-ketone fibers, constructing a chelate coating formed by chelating phytic acid and strontium ions on the surfaces of the polyether-ether-ketone fibers, and carrying out electron bombardment treatment on the chelate coating to form the nano-pore structure on the surfaces of the chelate coating. The application is that the fiber material with the nano-pore structure is woven into the artificial ligament fabric. According to the invention, the biological activity of strontium, the chelation function of phytic acid and the physical advantages of a nano-pore structure are creatively combined to realize a synergistic effect of multiple functions, continuous and controllable strontium ion release can be provided, osteogenesis biochemical signals can be activated, bionic physical attachment points are provided for cells, cell behaviors are guided, and the bioactivity of the cells is improved. The composite material can be used for adjusting the microenvironment around the implant and relieving oxidative stress injury, provides a novel solution and material for promoting tendon-bone healing and bone regeneration, and has great popularization and application values.

The invention relates to a large-scale marking method for released small-specification fries based on fin ray strontium marking, which comprises the following steps of: in a fish fry breeding stage, performing strontium marking on the small-specification fries for several hours by increasing the concentration of strontium ions in seawater in a breeding pool, so that fish fin rays form a'high-strontium marking ring '; and after the marked fish is recaptured, cutting fin rays of the marked fish to detect the content of the strontium element. The method does not depend on otolith, is factory-like, is low in marking cost, and does not cause lethal injury to fishes during sampling.

The invention discloses a curcumin-strontium nanoparticle loaded silk fibroin / polycaprolactone electrospun membrane and a preparation method and application thereof, the preparation method comprises the following steps: S1, dissolving a strontium source compound in a polyvinylpyrrolidone solution, adding curcumin, and continuously stirring to obtain a curcumin-strontium solution; s2, dialyzing the curcumin-strontium solution, and washing and drying a product to obtain curcumin-strontium nanoparticles; s3, dissolving the curcumin-strontium nanoparticles in a spinning dispersant, and adding silk fibroin and polycaprolactone to obtain a spinning solution; and S4, carrying out electrostatic spinning on the spinning solution to obtain the silk fibroin / polycaprolactone electrospun membrane loaded with the curcumin-strontium nanoparticles. According to the invention, natural polyphenol compound curcumin and strontium ions are coordinated to synthesize curcumin-strontium nanoparticles, and the curcumin-strontium nanoparticle loaded silk fibroin / polycaprolactone electrospun membrane is constructed in combination with an electrostatic spinning process. The electrospun membrane has good surface morphology, appropriate degradation rate and excellent mechanical strength, and can synergistically promote osteogenic differentiation of jaw bone marrow mesenchymal stem cells.

The application belongs to the technical field of adsorbing materials, and particularly relates to a high-selectivity strontium adsorbing material, a preparation method and application. The preparation method of the high-selectivity strontium adsorbing material comprises the following steps: loading rare earth ions on collagen fibers to obtain an intermediate material; and reacting an oxalate salt and a dimethylamine cation mixed solution with the intermediate material to generate a MOF crystal material with cavities in situ. The application takes dimethylamine cations as exchange ions, and the crystal structure formed by the coordination of rare earth ions and oxalate ions has a cavity size matching the hydrated ion radius of strontium, and has high selectivity to strontium ions, so that the strontium ions can be removed with high selectivity in the presence of various ions.

The invention discloses a carboxylated synanthrin strontium compound for relieving osteoporosis and a preparation method thereof, and relates to the technical field of pharmacy, the preparation method comprises the following steps: dissolving synanthrin in anhydrous DMF, adding triethylamine and succinic anhydride, carrying out a stirring reaction, adding absolute ethyl alcohol into the obtained reaction liquid, carrying out static settlement, centrifuging, and carrying out vacuum drying to obtain the carboxylated synanthrin strontium compound for relieving osteoporosis. The preparation method comprises the following steps: washing and drying, dissolving in water, dialyzing to remove impurities, freeze-drying, mixing the obtained carboxylated synanthrin solution with a SrCl2. 6H2O aqueous solution, adjusting the pH value, stirring the obtained mixed solution for reaction, adding absolute ethyl alcohol into the obtained reaction solution, standing, precipitating, centrifuging, washing, performing vacuum suction filtration, and finally freeze-drying to obtain the product. Compared with an existing strontium preparation, CIN-Sr has obvious advantages. The natural polysaccharide carrier not only solves the problems of low bioavailability and gastrointestinal stimulation of free strontium ions, but also enhances the bone formation promoting activity through the polysaccharide-metal synergistic effect.

The invention provides an anti-blue-light lens containing perovskite quantum dots. The anti-blue-light lens at least comprises a base material and the perovskite quantum dots dispersed in the base material, the chemical formula of the perovskite quantum dot is CsPb (BrCl) 3: Sr, wherein Sr is strontium ions doped into perovskite crystal lattices; the emission peak of the perovskite quantum dot is located in the wave band range of 480-510 nm, the half-peak width is not larger than 25 nm, and harmful blue light in the wave band of 415-445 nm can be absorbed and subjected to light conversion; in addition, the perovskite quantum dots also generate a synergistic absorption effect on part of red light and green light in transmission light, so that three primary colors of red, green and blue are synchronously attenuated, thereby reducing lens yellow color cast caused by blue light reduction, and realizing consideration of blue light prevention performance and visual color balance.

The application provides a strontium-doped polypeptide hydrogel and a preparation method, a composite biological scaffold and an application, and belongs to the technical field of biomedical materials.The strontium-doped polypeptide hydrogel comprises a three-dimensional nanofiber network formed by self-assembly of polypeptide phosphonated derivatives, and the three-dimensional nanofiber network is loaded with strontium ions.The three-dimensional nanofiber network is formed by self-assembly of strontium ions and polypeptide phosphonated derivatives, a novel hydrogel with mechanical adaptability, controllable degradability and bidirectional regulation function of osteogenesis-osteoclast is obtained, local targeted delivery of strontium ions is realized, and the functional regeneration of osteoporotic bone defects is realized in cooperation with the bone adhesion properties of polypeptides.

The invention belongs to the technical field of electronic materials, and discloses a magnesium-strontium double-doped calcium fluoride crystal and a preparation method and application thereof.The method comprises the steps that firstly, disodium ethylene diamine tetraacetate is chelated with calcium and magnesium ions, and the calcium and magnesium ions and villiaumite are subjected to a coordination exchange reaction to prepare a magnesium-doped calcium fluoride microsphere precursor; regulating and controlling hydrolysis of 3-aminopropyltriethoxysilane through an absolute ethyl alcohol-deionized water mixed solvent, and realizing uniform anchoring and deposition of strontium ions by virtue of an interface connection effect of the 3-aminopropyltriethoxysilane, so as to construct a magnesium-strontium double-doped precursor with a core-shell structure; carrying out hot pressed sintering in a CF4 / Ar mixed atmosphere to obtain a high-density polycrystalline blank; and finally, finishing crystal oriented growth by adopting a Bridgman-Stockbarger method. Through the synergistic effect of the components in the whole process, gradient uniform doping of magnesium and strontium ions is achieved, lattice distortion is effectively eliminated, the optical uniformity, the anti-laser-damage threshold value and the mechanical stability of the crystal are improved, and the prepared crystal can be widely applied to manufacturing of special electronic materials such as semiconductor wafers and the like and has good industrialization prospects.

The invention belongs to the technical field of marine ecological protection and aquaculture, and discloses an intervention method for relieving acid etching damage of shellfish larvae, according to the method, by adding strontium ions (Sr) with different concentrations into seawater, the malformation rate of the shellfish larvae under the acidification condition can be effectively reduced, the shell length, the mechanical property and the calcified gene expression level can be improved, and the acid etching damage of the shellfish larvae can be relieved. Therefore, the embryo shell forming ability and the acid corrosion resistance are enhanced; according to the invention, Ruditapes philippinarum, Crassostrea sikamea and Pinctada martensii are used as representatives, strontium intervention experiments are respectively carried out in seawater with pH values of 8.1, 7.7 and 7.4, and results show that a proper amount of strontium can significantly enhance the hardness and toughness of shells, and a more stable Sr-Ca eutectic structure is formed by partially replacing Ca in the shells, so that the stress resistance of larvae is improved. The method is quick in effect, wide in application range and suitable for embryo shell protection and cultivation stress resistance enhancement in the cultivation process of various shellfish seedlings.

This invention discloses a deoxyribozyme probe for recognizing strontium ions and its applications, belonging to the field of deoxyribozyme probe technology. The nucleotide sequence of the deoxyribozyme probe provided by this invention is any one of the sequences shown in SEQ ID NO:1 to SEQ ID NO:9. Specifically, it is a cis-structured deoxyribozyme probe composed of a deoxyribozyme and a substrate chain with a fluorescent group and a quenching group. The substrate chain sequence is shown in SEQ ID NO:10, and the deoxyribozyme sequence is any one of the sequences shown in SEQ ID NO:17 to SEQ ID NO:25. The deoxyribozyme probe provided by this invention can efficiently and specifically recognize strontium ions, thereby achieving accurate detection of the target ion, with a strontium ion response concentration of 2 mM or higher. This probe has good application prospects in the fields of biosensing and ion detection.

The invention relates to the technical field of dental and orthopedic implants, in particular to a zirconia osseointegration implant material and a preparation method thereof. Aiming at the problems of strong biological inertness and slow early-stage osseointegration of the zirconium oxide ceramic surface, the preparation method comprises the following steps: cleaning a zirconium oxide matrix and carrying out alkaline activation; forming a polydopamine adhesion bottom layer; branched polyethyleneimine is fixed to enhance the amino density; constructing a network layer through alternate coordination of phytic acid and calcium / strontium ions; strontium doped hydroxyapatite nano particles are immobilized; finally, biomimetic mineralization is carried out in simulated body fluid. According to the method, a micro-nano composite active interface is formed, the biological activity, ion release controllability and osseointegration capability of the material are remarkably improved, and osteoblast response is promoted.

The purpose of the present invention is to provide an inorganic latent heat storage material composition having high thermal stability. The present invention solves the above-mentioned problem by providing an inorganic latent heat storage material composition comprising: a calcium chloride hexahydrate; and a metal soap containing strontium ions and anions derived from fatty acids.

The invention discloses a self-powered electret synergistic strontium ion-ellagic acid microneedle as well as a preparation method and application thereof. The self-powered electret synergistic strontium ion-ellagic acid microneedle comprises a microneedle body and a self-powered electret film, wherein the microneedle body comprises a needle tip used for penetrating into tissue and a backing layer opposite to the needle tip; the self-powered electret film is attached to the backing layer; the microneedle body comprises a microneedle matrix and strontium ion-ellagic acid nanoparticles, and the strontium ion-ellagic acid nanoparticles are arranged in the microneedle matrix and are adjacent to the needle tip; and the self-powered electret thin film is a PVFT / SiO2 self-powered electret thin film. The PVFT / SiO2 self-powered electret film and the Sr < 2 + > / EA NPs loaded microneedle are combined and have a synergistic effect, so that the medicine utilization rate is remarkably increased, and the hair growth promoting effect is further improved.

The invention belongs to the technical field of implants, and discloses an intelligent controlled-release dental implant for an osteoporosis jaw bone and a preparation method. The preparation method of the dental implant comprises the following steps: carrying out laser etching and anodic oxidation on the surface of a titanium substrate to obtain a titanium dioxide nanotube array on the surface of the titanium substrate, and implanting strontium ions and fluorine ions into the titanium dioxide nanotube array by adopting a plasma immersion ion implantation technology to obtain the dental implant. A drug is loaded into nanotubes of the titanium dioxide nanotube array by adopting a vacuum negative pressure method, and a pH responsive polyelectrolyte membrane is formed on the surface of the titanium dioxide nanotube array through electrostatic interaction combination of chitosan and sodium alginate, so that the dental implant is obtained. The dental implant prepared by the invention can realize on-demand administration according to local pH change, and meanwhile, can provide long-acting and stable bioactive ion release to continuously promote osseointegration.

This invention belongs to the field of hydrometallurgy and chemical separation technology, specifically relating to a method for extracting strontium ions from brine using tri-n-octylphosphine oxide as an extractant, comprising the following steps: (1) dissolving the extractant in a diluent to obtain an organic phase; the extractant is tri-n-octylphosphine oxide, and the diluent is an ionic liquid; (2) mixing the organic phase with strontium-containing brine and extracting under stirring at room temperature, obtaining a mixed solution after extraction; (3) separating the mixed solution by centrifugation to obtain a strontium-loaded organic phase and a raffinate aqueous phase; (4) contacting the strontium-loaded organic phase with a back-extraction agent for back-extraction, collecting the aqueous phase after back-extraction to obtain a strontium solution. The extraction system provided by this invention, using tri-n-octylphosphine oxide (TOPO) as the extractant and the ionic liquid [BMpyr][Tf2N] as the diluent, exhibits significantly superior comprehensive performance compared to existing technologies for the extraction of strontium ions from complex brine.

The invention discloses a method for preparing chromium-doped molybdenum disulfide from chrome tanning waste liquid, a product and application, and the method comprises the following steps: S1, measuring the chrome tanning waste liquid after suction filtration, adding a molybdenum source, and stirring to prepare a mixed metal salt solution; s2, adding a sulfur source into the mixed metal salt solution, and stirring to obtain a mixed solution; and S3, transferring the obtained mixed solution into a polytetrafluoroethylene reaction kettle, carrying out hydrothermal reaction at 150-220 DEG C, and drying to obtain the chromium-doped molybdenum disulfide. The prepared chromium-doped molybdenum disulfide nano material has good adsorption performance, and the removal rates of cesium ions and strontium ions in wastewater can reach 80% and 50% or above respectively.

This invention relates to the field of organic pigment preparation, and discloses a water-based ink pigment, Red 48:3, and its preparation process. The raw materials are 2B acid, 2,3-acid, strontium chloride, SOLSPERSE 27000, DISPERBYK-190, polyetheramine-crown ether compound, water-based acrylic resin emulsion, and silane coupling agent KH-560. The process includes: synthesizing the polyetheramine-crown ether compound and resin emulsion; preparing a diazo solution of 2B acid and coupling it with a sodium 2,3-acid solution; adding strontium chloride to the parent dye for lake formation; and after pulping the initial filter cake, sequentially adding a dispersant, a modifying compound, a resin emulsion, and a coupling agent for surface treatment. This invention achieves stable anchoring through the strong complexation of the crown ether ring with strontium ions on the pigment surface, and the resin coating enhances the dispersion stability and compatibility of the pigment in the aqueous medium. The finished product has strong color development and storage stability, making it suitable for high-end water-based inks.

The application discloses strontium ion doped carbon quantum dots, a synthesis method thereof and antibacterial use, and directly synthesizes strontium ion doped carbon quantum dots with a hydrophobic surface through a solvothermal method in one step. The preparation process is simple, the cost is low, and large-scale production can be realized. The antibacterial coating has excellent antibacterial performance.

The invention discloses an antibacterial drug modified strontium-doped orthopedic implant material and a preparation method and application thereof, and relates to the technical field of bone repair materials, the material comprises a base material, and a strontium-doped functional layer, an antibacterial drug functional layer and a slow-release functional layer which are sequentially formed on the surface of the base material; wherein the strontium-doped functional layer is of a composite structure formed by loading strontium ions in a polypolyphenol or polyphenol amine matrix formed by auto-polymerization of polyphenol or phenol amine compounds. According to the invention, sequential release of functional factors is realized through layered structure design: an antibacterial drug is rapidly released in the early stage of implantation to inhibit bacterial infection, an anti-inflammatory and anti-oxidation effect is continuously exerted in the middle stage, strontium ions are stably and slowly released in the later stage to improve an immune microenvironment and promote osteoblast differentiation and bone matrix deposition, and three-layer functions have a synergistic effect, so that the bone repair effect is improved. The vicious circle of infection-inflammation-oxidative stress-immune imbalance is effectively broken through, and the method can be widely applied to the scenes of orthopedic clinical operations, oral and maxillofacial surgical reconstruction, diabetes-related bone defect repair, infectious bone defect treatment and the like.

The invention provides a preparation method and application of a strontium ion cross-linked multifunctional hydrogel material with an immunoregulation characteristic, and belongs to the field of biomedical materials. According to the technical scheme, the preparation method is characterized by comprising the following steps: carrying out Schiff alkali crosslinking on phenylboronic acid with amino and formylphenylboronic acid, then introducing natural active small molecules with antibacterial and antioxidant characteristics through a borate bond, and then adding sodium alginate and cheap strontium ions with immune characteristics; finally, the multifunctional strontium ion cross-linked hydrogel material with the immunoregulation characteristic is obtained. According to the invention, cheap strontium ions with immune characteristics are introduced to cooperate with natural active small molecules with antibacterial and antioxidant characteristics and the like to construct a multifunctional hydrogel system with immune characteristics, so that the multifunctional hydrogel system has important application value in the aspect of biomedicine.

The invention discloses a bipyridine coordinated catalyst, a preparation method of the bipyridine coordinated catalyst, a compound catalyst and application of the compound catalyst. B is a lithium ion, a sodium ion, a cesium ion, a magnesium ion, a strontium ion, an ammonium ion, a hexadecyl tetramethyl benzyl ammonium ion, an octadecyl tetramethyl ammonium ion, an octadecyl hexamethyl ammonium ion, a dodecyl dibutyl phosphonium ion, a tetradecyl propyl phosphonium ion, a butyl phosphonium ion, a tributyl ethyl phosphonium ion, a tetrabutyl phosphonium ion or a tributyl hexyl phosphonium ion; the ionic liquid is selected from ammonium ions, trimethylammonium ions, tetrapropylammonium ions, tributyl ethylammonium ions, benzyl dimethyl ammonium ions or benzyl dimethyl phosphonium ions; m is Mn; r is selected from C1-C14 alkyl groups; x is an integer between 1 and 18; and y is an integer between 1 and 36. The catalyst provided by the invention can improve the selectivity of nicotinic acid oxidation reaction and has strong reaction activity.

The invention discloses a deoxyribozyme probe for recognizing strontium ions and application, and belongs to the technical field of deoxyribozyme probes. The nucleotide sequence of the deoxyribozyme probe provided by the invention is any one of SEQ ID NO: 1-SEQ ID NO: 9, in particular to the cis-structure deoxyribozyme probe consisting of deoxyribozyme and a substrate chain with a fluorophore and a quenching group, the sequence of the substrate chain is as shown in SEQ ID NO: 10, and the sequence of deoxyribozyme is any one of SEQ ID NO: 17-SEQ ID NO: 25. The deoxyribozyme probe provided by the invention can efficiently and specifically recognize strontium ions, so that accurate detection of target ions is realized, and the response concentration of the strontium ions is more than 2 mM. The probe has a good application prospect in the fields of biosensing, ion detection and the like.

This invention relates to the field of oral care, and particularly to an anti-dentin hypersensitivity mineralizing solution, its preparation method, and its application. The anti-dentin hypersensitivity mineralizing solution provided by this invention, on the one hand, due to the ultra-small size of the ions and ion clusters in the solution and its fluidity, ensures effective diffusion into the dentinal tubules after being coated on the dentin surface; on the other hand, when the mineralizing solution comes into contact with saliva or bodily fluids, it produces a biocompatible mineral—strontium-containing calcium phosphate stable by polyphosphate—which can block exposed dentinal tubules; moreover, the introduced strontium ions can passivate the nerve conduction of external stimuli, thereby alleviating the symptoms of tooth sensitivity; polyphosphate also provides certain antibacterial properties; strontium ions and polyphosphate can jointly regulate the mineralization properties of the mineralizing solution. Therefore, the anti-dentin hypersensitivity mineralizing solution provided by this invention can effectively prevent and treat dentin hypersensitivity and other symptoms related to tooth demineralization.

An inorganic latent heat storage material composition having high thermal stability is provided. The inorganic latent heat storage material composition contains calcium chloride hexahydrate and a metal soap including strontium ions and anions derived from fatty acids.