124 results about "Divalent metal ions" patented technology

The invention discloses a multi-network anti-freezing hydrogel electrolyte, a preparation method thereof and application of the multi-network anti-freezing hydrogel electrolyte in an electrochemical device. The hydrogel is prepared by using polyvinyl alcohol (PVA) and polyacrylamide (PAM) to form a basic network skeleton, introducing phytic acid, ethylene glycol and lithium / zinc bimetal salt (Li2SO4 / ZnSO4), and carrying out thermal initiation polymerization and freeze thawing. The hydrogel prepared by the invention has a multiple physical cross-linked network formed by polymer molecular chain entanglement, hydrogen-bond interaction among functional groups and metal coordinate bonds constructed between phosphate groups and divalent metal ions, so that the hydrogel electrolyte has excellent mechanical properties. Due to introduction of ethylene glycol, formation of ice crystals is effectively inhibited, and the hydrogel is endowed with excellent anti-freezing performance; the high-concentration Li < + > and Zn < 2 + > ensure the high ionic conductivity. The supercapacitor assembled by using the hydrogel electrolyte shows relatively high specific capacitance and good capacitance retention rate under bending and freezing conditions, and has good electrochemical properties and safety performance.

The application provides a reverse water gas shift catalyst, a preparation method and application thereof, and the reverse water gas shift catalyst prepared by the preparation method has excellent catalytic activity and high CO selectivity in a reverse water gas shift reaction. The preparation method comprises the following steps: contacting a precipitating salt solution with a precipitant aqueous solution and performing co-precipitation, and simultaneously controlling the reaction temperature to be 40-80 DEG C and the pH to be 6-8; optionally performing aging after the co-precipitation is completed; filtering the obtained precipitate to obtain a filter cake, washing the filter cake, then drying the filter cake, and calcining the filter cake at 300-500 DEG C to obtain the reverse water gas shift catalyst; wherein the precipitating salt solution is a mixed aqueous solution of a soluble salt of divalent metal ions and a soluble salt of trivalent metal ions, the divalent metal ions are selected from divalent ions of Mg and / or Zn, and the trivalent metal ions are selected from trivalent ions of Al, In and / or Ga.

The invention relates to a metal ion regulation-based ayu pectin gel forming method and application thereof. The method comprises using monovalent or divalent metal ions (such as Ca < 2 + >, Mg < 2 + >, Na < + >, K < + > and the like) to regulate the formation of the Ayu pectin gel. The preparation method comprises the following specific preparation steps: firstly, dissolving Aiyu pectin in deionized water, and uniformly stirring to prepare a pectin solution; then adding a required metal ion solution, and regulating and controlling the concentrations of different metal ions, so that the metal ions interact with pectin molecules; and standing the mixed solution at room temperature for a certain time, and inducing to form stable pectin gel. The method has the advantages that crosslinking of pectin molecular chains is regulated and controlled through metal ions, and the mechanical property and the water holding capacity of the gel can be remarkably improved; in addition, extra energy input is not needed, and the preparation process is simple, efficient, environment-friendly and green; the finally formed pectin gel has good thermal stability and structural strength, and is suitable for food, health care products and other fields.

The application provides a solid-state electrolyte, the chemical formula of the solid-state electrolyte is: A(Li (3+x+2y) Zr (2‑x‑2y) M x N y Si2PO 12 )B(Li3La(PO4)2), wherein A+B=1, 0<=x<=0.5, 0.1<=y<=0.3, M is a trivalent metal ion, and N is a divalent metal ion. The application has the beneficial effects that the solid-state electrolyte has high ionic conductivity, and the battery prepared from the solid-state electrolyte has high battery capacity and service life.

The invention discloses a core-shell nano-enzyme composite spray gel dressing and a preparation method and application thereof.The dressing comprises a component A prepared from sodium alginate, N-isopropylacrylamide PNIPAM, core-shell nano-enzyme and curcumin and a component B of a divalent metal salt solution, and the component A and the component B are sprayed at the same time to form the core-shell nano-enzyme composite spray gel dressing. The preparation method of the core-shell nano enzyme comprises the following steps: mixing potassium ferrocyanide, ferric trichloride and polyvinylpyrrolidone to obtain a Prussian blue nano particle precursor solution; carrying out ultrasonic emulsification treatment and replacement on the curcumin core solution and the Prussian blue nanoparticle precursor solution; and freeze-drying to obtain the core-shell nano-enzyme. Through rapid ionic crosslinking of sodium alginate and divalent metal ions and the temperature-sensitive phase change characteristic of the temperature-sensitive polymer poly (N-isopropylacrylamide), the gel dressing is rapidly formed, the damaged skin is effectively covered and protected, the excellent antioxidant, anti-inflammatory and antibacterial capabilities are achieved, and the healing cycle of the radiodermatitis wound can be remarkably shortened.

The invention discloses a preparation method of a magnesium alloy surface micro-arc oxidation corrosion inhibition coating, which comprises the following steps: placing a magnesium alloy as an anode in a micro-arc oxidation electrolyte, and carrying out constant-current micro-arc oxidation by taking stainless steel as a cathode to form the micro-arc oxidation corrosion inhibition coating on the magnesium alloy surface, the micro-arc oxidation electrolyte comprises 5-30 g / L of sodium hydroxide, 20-50 g / L of sodium metasilicate, 5-10 g / L of sodium carbonate and 1-8 g / L of a micro container, and a solvent is water; the carrier of the microcontainer is mesoporous silica, the inorganic corrosion inhibitor is located on the inner side of a mesoporous channel of the mesoporous silica, and the organic corrosion inhibitor is located on the outer side of the mesoporous channel; and part of the organic corrosion inhibitor and divalent metal ions form an insoluble complex to cover the port of the mesoporous channel. The coating prepared through the method has the self-catalysis dual self-repairing function, the self-repairing problem of local damage of the micro-arc oxidation coating is further solved, and then the corrosion protection performance of the magnesium alloy micro-arc oxidation coating is further improved.

The invention discloses an ion locking fixed cyclodextrin cross-linked polymer functionalized cellulose-based textile material and a preparation method thereof, and the method comprises the following steps: cross-linking hydroxypropyl-beta-cyclodextrin (HP-beta-CD) by using 1, 2, 3, 4-butanetetracarboxylic acid (BTCA) to prepare a cross-linked polymer containing carboxyl / carboxylate groups, and carrying out cross-linking on the cross-linked polymer containing carboxyl / carboxylate groups to prepare the ion locking fixed cyclodextrin cross-linked polymer functionalized cellulose-based textile material. Polyphenols active molecules (such as luteolin) are clathrated and / or loaded; depositing the cross-linked polymer loaded with the active molecules on the surface of a cellulose-based textile base material which is subjected to cationization modification and has quaternary ammonium salt cationic groups on the surface through electrostatic interaction; divalent metal ions (preferably Ca < 2 + >) are further introduced to coordinate with carboxyl / carboxylate groups in the cross-linked polymer to form physical cross-linking points, so that locking and fixation of a functional layer are realized, and the release behavior of active molecules is regulated and controlled. The material has the comprehensive performance of stable fixation, washability, durability, breathability, comfort and maintenance and controllable release mode, and can be applied to application scenes such as skin contact textiles and dressing materials.

The invention discloses a naphthoquinone-based gas sensitive material, a preparation method and application of the naphthoquinone-based gas sensitive material in an ammonia gas sensor, and belongs to the technical field of gas sensors. The material is composed of divalent metal ions such as copper, nickel and cobalt and a polysubstituted naphthoquinone organic ligand, forms a one-dimensional chain structure, has a high specific surface area, an ordered electron channel and excellent molecular recognition capability, and can detect toxic gases such as ammonia gas at room temperature with high sensitivity. Macroscopic preparation of the material can be realized through solvothermal one-step reaction. Compared with the prior art, the one-dimensional coordination structure and ligand site engineering synergistically improve the carrier transport and molecular recognition capability, can realize continuous, real-time and selective detection of ammonia gas under complex working conditions, and has the advantages of high yield, large-scale preparation and excellent device application prospect.

The invention discloses enhanced shampoo powder based on plant-derived antibacterial factors, which comprises the following components in parts by weight: A, 10-40 parts of plant polysaccharide; b, 5-30 parts of vegetable protein; c, 4-15 parts of natural alkaline ester; d, 2 to 10 parts of natural polyol; e, 1-7 parts of plant organic acid; f, 2 to 20 parts of a plant antibacterial active component; g, 3-6 parts of a food-grade anti-caking agent; h, 1 to 10 parts of divalent metal ions; i, 0.5-2 parts of food coloring; plant polysaccharide and plant protein are matched to form a net-shaped embedding structure, and plant antibacterial active components are uniformly embedded into a multi-layer steady-state structure; buffer substances of natural alkaline lipid, polybasic sugar alcohol and plant organic acid are matched to synergistically form a thermal steady state barrier on the periphery of the net-shaped embedding structure, so that the high-temperature stability of active factors in plant antibacterial active ingredients and the controllable slow release of the storage period are promoted; the technical problem that the plant antibacterial active ingredients are subjected to thermal oncolysis, hydrogenation inactivation or molecular configuration isomerization in the links of mixing granulation and subsequent drying is solved.

This invention discloses a method and system for selective separation of monovalent and divalent ions in an alginate fiber coagulation bath based on electrodialysis, belonging to the field of fiber production and membrane separation technology. The method and system integrate a selective electrodialysis device into a traditional coagulation bath circulation system. Utilizing an ion exchange membrane with monovalent and divalent cation selectivity, sodium ions accumulated in the coagulation bath are selectively migrated and removed under the action of an electric field, while divalent metal ions are efficiently retained, thereby maintaining a stable molar ratio of divalent ions to sodium ions in the coagulation bath within the required process range. Compared to traditional methods, this invention eliminates the need for large-scale replenishment of divalent metal salts or full replacement solution, significantly reducing production costs and resource waste. It achieves online regeneration and continuous circulation of the coagulation bath, significantly improving production stability, fiber quality, and resource utilization efficiency, and is suitable for the green and efficient production of various alginate fibers.

The present application provides an antistatic fiber and a preparation method thereof. The antistatic fiber comprises the following raw materials by weight: 100 parts of polyester chips, 15 to 40 parts of polyether block polymers, and 2 to 10 parts of an organic metal salt; wherein the polyether block polymer comprises a polyether segment and a rigid segment, the rigid segment comprising a polyamide segment or a polyester segment, and the organic metal salt comprises a monovalent metal ion and a divalent metal ion, and the molar ratio of the monovalent metal ion to the divalent metal ion is (3 to 5):1. The antistatic fiber constructs a conductive network in a polyester matrix by embedding a composite conductive system of mobile monovalent metal ions and cross-linkable divalent metal ions in the polyether block polymer, thereby achieving a comprehensive antistatic effect of fast conductive response speed, stable ion network structure, and high conductivity retention after washing. The fiber is particularly suitable for high-demand application scenarios such as dry environments, long-term use, and fiber deep processing.

The invention discloses a multifunctional double-drug delivery system based on metal collaborative treatment and application of the multifunctional double-drug delivery system, and belongs to the technical field of biological medicine. The double-drug delivery system is double-drug delivery lipidosome and comprises metal ions, a lipidosome membrane and active ingredients, the metal ions are adsorbed on the surface of the lipidosome membrane, and the active ingredients are wrapped in the lipidosome membrane; the metal ions are divalent metal ions; the active component consists of an STING agonist and a traditional Chinese medicine active monomer component. According to the double-drug delivery system, the STING agonist and the traditional Chinese medicine anti-inflammatory components are co-loaded through lipidosome, and multi-dimensional remodeling of a tumor microenvironment is achieved through the double effects of exciting tumor immunity and inhibiting inflammatory reaction; and meanwhile, by introducing metal ions, the lysosome escape efficiency of a liposome drug delivery system is effectively enhanced, so that the intracellular delivery efficiency of the drug is improved.

The invention discloses a polyphosphate-metal nano-composite as well as a preparation method and application thereof, and belongs to the technical field of biological medicines and nano-materials. The polyphosphate-metal nano-composite is formed by self-assembly of polyphosphate and metal ions under the coordination action; wherein the chain length of the polyphosphate is 20 to 75. According to the invention, divalent metal ions are introduced, so that polyphosphate and metal ions form a spherical nano-composite through coordination self-assembly, the composite can be absorbed by tumor cells and degraded under an acidic condition, released polyphosphoric acid is separated through unique Ca < 2 + > phase, Ca < 2 + > is enriched around mitochondria, and the function of tumor treatment is realized. And tumor cell metabolism reprogramming is caused to be dominated by oxidative phosphorylation, so that copper death and immunoregulation are induced, and a triple synergistic anti-tumor effect is realized.

The present application relates to the technical field of binder, and particularly relates to a water-based binder based on coordination cross-linking of polyvalent metal ions and a preparation method and application thereof.A preparation method of a water-based binder based on coordination cross-linking of polyvalent metal ions, specifically comprising the following steps: S1, dissolving carboxymethyl cellulose sodium in water, heating and stirring to form a carboxymethyl cellulose sodium aqueous solution; S2, dissolving a metal ion compound in deionized water to obtain a metal ion compound aqueous solution; the metal ion includes divalent metal ions and trivalent metal ions; S3, slowly adding the metal ion compound aqueous solution to the carboxymethyl cellulose sodium aqueous solution in a certain amount, continuously heating and stirring for a period of time, and obtaining the water-based binder.The mechanical property of the water-based binder is obviously improved, and the battery has better rate and more stable cycle.

The invention relates to the technical field of refining of high-purity boric acid, and particularly discloses a method for removing divalent metal ions in high-purity boric acid, which comprises the following steps: dissolving the high-purity boric acid in water, filtering, adsorbing by adsorbent resin, filtering to obtain a refined boric acid solution, cooling, crystallizing, evaporating, crystallizing, carrying out suction filtration, and crushing to obtain the refined boric acid. The preparation method of the adsorption resin comprises the following steps: (1) blending polystyrene master batches with acetyl chloride, dispersing, and adding Lewis acid for reaction to obtain acetylated polystyrene particles; and (2) dispersing acetylated polystyrene particles, mixing with p-aminobenzene arsenic acid to react, filtering, and washing with alcohol to obtain the adsorption resin. After the high-purity boric acid is treated by the adsorbent resin prepared by the invention, the purity of the high-purity boric acid can reach 99.99%, and the effect of removing divalent metal ions in the high-purity boric acid can be realized.

An electrolyte composition including an aluminum salt, an ionic liquid, and a phthalocyanine coordination compound is provided. The anion of the aluminum salt is F−, Cl−, Br−, I−, BF4−, PF6−, [(CF3SO2)2N]−, CF3SO3−, NO3−, CH3CO2−, SO42−, C2O42−, or [B(C2O4)2]−. The ionic liquid has a structure as shown in formula (I) in the specification. The phthalocyanine coordination compound contains a divalent metal ion. In the electrolyte composition, the weight of the aluminum salt is greater than that of the ionic liquid, and the weight of the ionic liquid is greater than that of the phthalocyanine coordination compound. An aluminum battery containing the electrolyte composition is also provided.

The purpose of the present invention is to provide a particulate composition, a gel composition and a food product. A particulate composition according to the present invention which is used to prepare a gel composition by mixing the same with water, wherein pectin, a divalent metal ion component and an acid component are contained therein, and the divalent metal ion component and / or the acid component are slowly dissolved in the water.

The invention relates to the technical field of lithium-sulfur batteries, in particular to a preparation method of a graphene carbon nanotube hybrid material and a lithium-sulfur positive electrode material. The preparation method of the graphene carbon nanotube hybrid material provided by the invention comprises the following steps: S1, mixing a graphene oxide solution and a divalent metal salt solution to obtain a mixed solution; s2, mixing a carbon source, a nitrogen source and a precipitator, adding the mixed solution obtained in the step S1 into the mixture, and performing hydrothermal reaction and solid-liquid separation to obtain an intermediate; and S3, carrying out carbonization, washing and solid-liquid separation on the intermediate to obtain the graphene carbon nanotube hybrid material. By utilizing the characteristic that the surface of the graphene oxide has abundant and uniformly distributed polar functional groups, divalent metal ions can be uniformly adsorbed, so that in-situ grown carbon nanotubes in a hydrothermal reaction are more uniformly distributed, a sulfur storage space is increased, a rapid example and electron transmission channel is created, and electrochemical reaction kinetics is increased.

The invention relates to the technical field of analysis and test technologies and medical methods, and discloses a reagent and a method for molecular structure analysis of an estrogen isomer, which are based on cyclodextrin and are used for molecular structure analysis of an alpha / beta-E2 / E3 isomer. The reagent comprises gamma cyclodextrin (gamma-CD), beta-CD and a mixed aqueous solution of compounds containing different metal ion ligands, the molecular formula of the beta-CD is C42H70O35, the molecular weight of the beta-CD is 1134.98, and the compound containing the metal ions is salt of any metal ion or soluble alkali containing the metal ions. According to the method, an alpha / beta-E2 / E3 sample, CD, a compound containing metal ions, such as monovalent metal or divalent metal ions and the like are simply prepared into a mixed solution, then non-covalent compound ions of alpha / beta-E2 / E3-gamma-CD / beta-CD-containing metal ions are generated by utilizing electrospray ionization, and then the ion mobility spectrometry of the non-covalent compound ions is measured by utilizing an ion mobility spectrometry technology. And different position structure information of alpha / beta-E2 / E3 molecules can be obtained.

The application discloses a kind of biomimetic mineralization materials with high stable protection DNA and preparation method thereof.DNA molecule is self-assembled with divalent metal ion, and DNA / metal nanoparticle is obtained; polyelectrolyte layer is wrapped on the surface of DNA / metal nanoparticle by layer-by-layer assembly technology, and DNA / metal@LBL nanoparticle is obtained; polydopamine layer is deposited on the surface of DNA / metal@LBL nanoparticle, and DNA / Fe@LBL@PDA particle is obtained, which is biomimetic mineralization material with high stable protection DNA.The biomimetic mineralization material has the advantages of simple construction, high density and long-term stability, and can effectively protect the stability and integrity of DNA molecule in harsh external storage environment (such as ROS, high temperature, high salt, alkaline, humid, biological solvent and nuclease environment).The present application can provide technical support for DNA high-density storage and long-term stability storage, and has wide application value in the fields of biological medicine, genetic engineering, disease treatment and DNA storage.

The application discloses a high-loading MXene-encapsulated magnetic porous microcapsule for adsorption and a preparation method and application thereof, and belongs to the field of biomedical materials, and the preparation method comprises the following steps: in step one, a hydrogel precursor solution doped with magnetic nanoparticles is used as an external phase, and a MXene dispersion liquid is used as an inner phase, and a microfluidic coaxial electrospraying device is used to generate monodisperse core-shell droplets with uniform sizes; in step two, the monodisperse core-shell droplets prepared in step one are subjected to freezing pretreatment, and then are crosslinked with divalent metal ions, so that double gelation of the core layer and the shell layer is triggered, and hydrogel microspheres with a core-shell structure are obtained; and in step three, the hydrogel microspheres with the core-shell structure obtained in step two are subjected to freeze drying, and high-loading MXene-encapsulated magnetic porous microcapsules are obtained. The application has excellent blood compatibility and high adsorption capacity, and is outstanding in removing uremic toxins including creatinine, urea and uric acid, and is a kind of adsorbent which is both efficient and safe.

The invention provides application of aeromonas hydrophila bacteriophage lyase Lys56 in preparation of a bacteriostatic agent, and belongs to the technical field of biology. The aeromonas hydrophila bacteriophage lyase Lys56 disclosed by the invention has an inhibiting effect on certain gram-negative bacteria and gram-positive bacteria, and has no splitting effect on certain probiotics. The Lys56 is not resistant to high temperature and has high acid-base tolerance, the inhibition effect of the Lys56 can be enhanced by low-concentration divalent metal ions, the inhibition effect of the Lys56 can be enhanced by combined use of 1-10 mM of ethylenediamine tetraacetic acid (EDTA) and the Lys56, and the Lys56 can effectively inhibit and remove biofilms of host bacteria. In an artificial pollution model of the fish blocks, the antibacterial effect of the Lys56 is in direct proportion to the concentration of the Lys56. Lys56 has a good sterilization effect and has a good application prospect.

The invention relates to the field of hair growth nutrients, and discloses a nutrient composition for promoting hair growth and a preparation method thereof, the composition comprises a basic hair growth nutrient group and an absorption-promoting synergistic group; the basic hair growth nutrition group comprises the following components in parts by weight: 0.3-0.8 part of ferrous lactate, 2-5 parts of zinc gluconate, 5-8 parts of magnesium stearate, 3-8 parts of a coating material and 17-25 parts of milk mineral salt; the absorption-promoting synergistic group comprises the following components in parts by weight: 0.2-1.5 parts of a black pepper extract, 2-10 parts of lecithin and 2-8 parts of casein phosphopeptides, the black pepper extract and the lecithin are firstly released, an intestinal epithelium channel is opened by utilizing a biological penetration promoting effect, and a pre-permeation state is established; the subsequently released CPP is complexed with divalent metal ions in intestinal juice to prevent precipitation, so that the CPP is synchronously and rapidly absorbed through a pre-opened channel, and the problems of competitive antagonism and difficult absorption of high-dose minerals are effectively solved.

The application belongs to the technical field of hydrogenation catalysts, and discloses a supported NiCu alloy nanoparticle catalyst, a preparation method and application of the catalyst in catalytic hydrogenation of alkenes or aldehydes. The active center of the catalyst is uniformly dispersed NiCu alloy nanoparticles, and the carrier is a P-doped magnesium-aluminum layered double metal oxide with a structural formula of NiCu-MgAl-P-LDO. The molar ratio of divalent metal ions M 2+ and trivalent metal ions Al 3+ in the catalyst is (1-4):1, the molar ratio of Ni 2+ , Cu 2+ , Mg 2+ in the divalent metal ions is (1-4):(1-4):(1-3), and the P element is conducive to the dispersion of the NiCu alloy nanoparticles. The catalyst of the application unexpectedly improves the catalytic performance and stability of the catalyst through double optimization of the structure and composition of the catalyst. The catalyst of the application is used for selective catalytic hydrogenation of alpha-methylstyrene, has low price, high conversion rate and selectivity, and stable performance. The catalyst of the application is used for catalytic hydrogenation of hydroxyl pivalaldehyde, can efficiently and mildly convert the hydroxyl pivalaldehyde into pentyleneglycol, avoid the further reaction of the pentyleneglycol, and has high selectivity. The catalyst of the application can stably catalyze the hydrogenation of isooctene aldehyde into isooctanol under high temperature and high pressure, and has high conversion rate, selectivity and stability.

The invention discloses a recovery method of 7-dehydrocholesterol, which comprises the following steps: pretreating a 7-dehydrocholesterol crystallization mother liquor serving as a raw material to obtain a crystallization mother liquor dry basis; dissolving the crystallization mother liquor dry basis by adopting an organic solvent, and filtering to obtain filtrate; adding a complexing agent into the filtrate, and filtering after complexing reaction to obtain a complex; the complexing agent is metal salt of divalent metal ions, and the metal salt can be dissolved in water; adding water into the complex for decomplexing, extracting and crystallizing; according to the recovery method, the 7-dehydrocholesterol (7-DHC) in the 7-dehydrocholesterol crystallization mother liquor can be effectively extracted, a 7-dehydrocholesterol product with the purity being 95% or above is obtained, and the yield is high. Meanwhile, the operation method is simple, easy to repeat and beneficial to industrialization.

The invention discloses an intelligent electrostatic ion adhesion filtering device of a mask and a nasal filter. Belongs to the field of intelligent life protection and comprises a filter electrode layer group, fixing blocks and a power signal module, the filter electrode layer group is connected with a capacitor through the fixing blocks to form a parallel capacitor-like relation, and enough charge reserve can be provided. And the Bluetooth transmission system can be connected with intelligent equipment, feeds back the state of the device and the state change of the environment in real time, and adjusts parameters through the intelligent equipment. The sufficient electric load capacity enables filter screen holes of the electrode layer to be enlarged as much as possible, and air resistance during breathing is greatly reduced. The supporting filter screen is made of a degradable environment-friendly material, so that the ecological environment is not influenced. The ion adhesion layer is arranged, adhesion molecules can be activated through the humidity during expiration, and the ion adhesion layer can fix substances such as droplets and viruses through the combined action of divalent metal ions and the adhesion molecules. Through the arrangement, safe, environment-friendly and transparent life protection can be provided for people.

The present application relates to a kind of methods for adsorbing and separating propylene and propane, which includes the adsorption separation of propylene and propane with metal organic framework, wherein the metal organic framework material is formed by the coordination assembly of divalent metal ion, malic acid and pillar supporting ligand.The metal organic framework material involved in the present application is stable in structure and performance, has high adsorption capacity for propylene, can realize the efficient thermodynamic-kinetic synergistic separation of propylene and propane, and the adsorption performance remains the original effect after repeated adsorption-regeneration multiple times.The performance in the adsorption separation of propylene and propane is far superior to most solid adsorbents.

The present disclosure provides compositions including alginate microspheres capable of self-degradation upon rehydration, the alginate microspheres comprising alginate, alginate lyase, and divalent metal ions. The present disclosure also provides methods of making compositions including alginate microspheres capable of self-degradation upon rehydration, comprising alginate, alginate lyase, and divalent metal ions. The present disclosure also provides methods of inducing an embolism in a subject in thereof, and syringes containing the compositions of the present disclosure for use in the methods thereof.

The application discloses a membrane capacitive deionization anode and a preparation method thereof and a membrane capacitive deionization system, relates to the technical field of wastewater treatment and resource utilization, and discloses a membrane capacitive deionization anode preparation method, which comprises the following steps: providing oxidized carbon, wherein the surface of the oxidized carbon contains carboxyl groups; dispersing the oxidized carbon in water, adding nitrate, a first metal salt containing divalent metal ions and a second metal salt containing trivalent metal ions for pre-adsorption; adjusting the pH value and performing crystallization to make the divalent metal ions and the trivalent metal ions form a layered double hydroxide (LDH), so as to obtain an LDH / oxidized carbon composite anode material; and preparing a slurry of the LDH / oxidized carbon composite anode material and loading the slurry on a current collector to obtain the membrane capacitive deionization anode. The embodiment of the application prepares a membrane capacitive deionization anode with high capacity, low energy consumption and excellent ion selectivity, and can efficiently recover phosphates from wastewater.

The invention discloses a composite solution for treating reflux esophagitis and a preparation method and application thereof, and relates to the technical field of pharmaceutical preparations, the composite solution is formed by physically mixing drug-loaded microspheres and a gastric buoyant raft matrix solution; wherein the drug-loaded microspheres are solid particles which take thiolated pectin as a carrier, are crosslinked and cured through divalent metal ions and are coated with a periplaneta americana extract; the gastric buoyant raft matrix solution comprises a hydrophilic colloid, a component capable of generating gas when encountering acid and a stabilizer. The magnesium mercapto pectin microspheres provide excellent mucous membrane adhesion, and the acting time of the medicine on the esophageal focus is prolonged; the gastric buoyant raft substrate forms a physical barrier in a gastric acid environment to inhibit regurgitation of gastric contents. Through cooperation of the two, a dual treatment mechanism of local repair and source control is realized. The preparation can remarkably prolong the in-vivo residence time and effectively promote esophageal mucosa healing, and the curative effect is better than that of a pure periplaneta americana extract preparation.