59 results about "Ion complexation" patented technology

The invention relates to a composite solid electrolyte and a preparation method and application thereof. The preparation method of the composite solid electrolyte comprises the following steps: S1, mixing an inorganic filler and a fluorine-containing compound, and reacting at 70-90 DEG C under an acidic condition to obtain an inorganic filler wrapped by a fluorinated layer; then adding a fluorine ion complexing agent and a silane coupling agent for reaction to obtain a modified filler; adding a thermal decomposition type cross-linking agent into the polymer, and carrying out melt blending to obtain a cross-linked polymer; s2, uniformly mixing the modified filler, a cross-linked polymer, a lithium salt and a solvent to obtain a plurality of slurries containing the modified filler with different volume concentrations; and molding the slurry to prepare the composite solid electrolyte. According to the method, the fluorinated layer and the siloxane network are constructed step by step, so that the interface impedance is reduced, and efficient dissociation of the lithium salt is promoted; a three-dimensional network structure is combined, so that the tensile strength is improved; the modified filler is further designed in a gradient manner to improve the lithium ion transference number.

The invention relates to a heavy metal stabilizer and a preparation method and application thereof, and relates to the technical field of heavy metal stabilizers. The preparation method comprises the following steps: weighing sepiolite, adding hydrochloric acid, carrying out constant-temperature water bath, carrying out centrifugal separation to obtain a precipitate, drying the precipitate, and grinding to obtain the heavy metal stabilizer for sludge pyrolysis. Natural sepiolite is used as a base material, acid activation treatment is carried out through hydrochloric acid to obtain the heavy metal stabilizer, the heavy metal stabilizer is used in sludge pyrolysis, in the pyrolysis process, the heavy metal stabilizer fixes heavy metal in a pyrolysis product carbon in a stable form through the effects of surface adsorption, ion complexation, high-temperature packaging and the like, and the heavy metal stabilizer is used for sludge pyrolysis. Therefore, the emission of heavy metals in the pyrolysis process is reduced, and the ecological risk and the use risk of the pyrolysis product carbon are reduced.

The invention discloses a low-molecular scale-inhibiting thickening agent for deep coal rock gas reservoir fracturing and a preparation method of the thickening agent. The thickening agent comprises 25-40 parts of a hydrophilic monomer; 3-6 parts of a scale inhibition monomer; 3-5 parts of a functional monomer; 50 to 55 parts of deionized water; 0.5 to 0.8 part of an emulsifier; 0.15 part to 0.2 part of an initiator; 1.5 to 3 parts of hydrophobic monomer; and a proper amount of a pH regulator. According to the prepared scale inhibitor, the sand-carrying performance of fracturing fluid is met, meanwhile, groups with the scale inhibition function are innovatively introduced, during gel breaking, macromolecular chains are broken to release the scale inhibition groups, the scale inhibition groups are complexed with calcium and barium ions in formation water, scale deposition is inhibited, the effect and safety of fracturing construction can be further improved, and powerful guarantee is provided for efficient development of oil and gas fields.

The application provides a preparation method of gold powder for matching low-temperature co-fired ceramic, and submicron irregular gold powder is prepared in an aqueous solution of chloroauric acid through an oxidation-reduction method. In the preparation process, amino acid is used as a gold ion complexing agent and a pH buffer of a reaction solution, a small-molecule organic substance containing an imidazole functional group and having weak reduction is used as a reducing agent, and after the gold powder is washed with deionized water, ethanol is used to replace water in the powder, and the like, so that submicron irregular gold powder which is not agglomerated is prepared. The gold powder prepared by the application has a particle size range of 200nm-900nm, has good dispersibility in alcohol and ester solvents, and after sintering, a film layer is dense, can be matched with various green ceramic materials at home and abroad, and after sintering, a substrate is flat and has a warping degree less than 0.1mm. The preparation method of the application has high yield and is convenient in the preparation process.

The present application belongs to the technical field of pharmaceutical preparation, and relates to an electrolytic silver ion solution capable of completely inactivating HIV and a preparation method thereof. The electrolytic silver ion solution uses ultrapure water as a solvent, and contains divalent silver ions, a complexing agent and a complexing agent in the electrolytic silver ion solution. The complexing agent is hexamethylenetetramine capable of forming a stable complex with silver ions and capable of quantitatively analyzing the concentration of silver ions. The hexamethylenetetramine is of an analytical purity grade. The complexing agent is ethylenediamine capable of forming a more stable silver-ammonia complex ion, i.e., diammine silver, and capable of doubling the concentration of the generated silver-ammonia complex ion. The concentration of the divalent silver ions is 200-300 mg.kg ‑1 -1; the highest concentration of the complexing agent is 0.9 g.kg ‑1 -1; and the highest concentration of the complexing agent is 0.55 g.kg ‑1 The complexing agent and the complexing agent of the present application have a small dosage, a high relative ratio of silver ions and a stronger activity, and the inactivation rate of HIV is as high as 99.993%.

The invention discloses a method for preparing high-stability anionic polyacrylamide based on thiol-ene click chemistry. The core of the method is to construct an omnibearing stable system of a polymer from three dimensions through a click chemical reaction: the structure is stable: a topological chain structure with a space charge shielding effect is formed through accurate arrangement of monomers, so that a molecular skeleton and an active group keep long-acting stability. And the conformation is stable: the rigid-flexible adjustable chain segment design forms an internal microphase separation structure, so that the polymer can maintain the stretched and stable hydration conformation in various aqueous solutions, and the performance is consistent. And the process is stable: the reaction mechanism of ion complexing and click addition realizes the gentle release of polymerization heat, so that the synthesis process has high tolerance to parameter fluctuation. According to the invention, the problem of performance degradation caused by disordered structure and sensitive process of a traditional product is systematically solved, and a reliable solution is provided for the application field with strict requirements on stability.

The invention relates to the technical field of gel preparations, in particular to selenium disulfide gel and a preparation method thereof. The raw materials for forming the selenium disulfide gel are selected from selenium disulfide, a metal ion complexing agent, carbomer, a pH regulator, lauryl sulfate salt and a solvent. The selenium disulfide gel has excellent stability, and particularly, the selenium disulfide gel is not prone to discoloring and layering after being stored at high temperature for a long time.

The present invention relates to a method for producing a precursor for a positive electrode active material, the method comprising: a seed formation step of forming a precursor for a positive electrode active material seed by performing a coprecipitation reaction while supplying a transition metal aqueous solution, an ammonium cation complexing agent, and an alkaline compound to a reactor; and a particle growth step of growing a precursor for a positive electrode active material particle by performing a coprecipitation reaction while supplying a transition metal aqueous solution, an ammonium cation complexing agent, and an alkaline compound to a reaction solution in which the precursor for a positive electrode active material seed has been formed, wherein the supply rate of the transition metal aqueous solution and the supply rate of the ammonium cation complexing agent in the particle growth step are each more than twice the supply rate of the transition metal aqueous solution and the supply rate of the ammonium cation complexing agent in the seed formation step.

The application discloses a kind of low-carbon cementing material by waste incineration fly ash excited ore powder and preparation method thereof, by weight percentage, including the following components: modified waste incineration fly ash 8~12%, ion complex component 1~3%, composite shrinkage component 2~6%, ore powder 55~65%, water 23~28%.Preparation method includes the following steps: S1, preparation modified waste incineration fly ash, ion complex component, composite shrinkage component;S2, modified waste incineration fly ash, ion complex component, composite shrinkage component, ore powder, mixing water, fully mixed and stirred evenly, can obtain the low-carbon cementing material by waste incineration fly ash excited ore powder described in the application.In the aspect of component design, the application is environmentally friendly, low cost, in the performance aspect, the flow rate can be adjusted, the mechanical properties are excellent, the volume shrinkage is small.

The application discloses a cationic strong water-absorbing and high salt-resistant hydrogel and a preparation method thereof. The method comprises the following steps: under stirring, a monomer DMDAAC solution is firstly added into a reactor, and then an initiator, a crosslinking agent, a metal ion complexing agent and deionized water are added at one time; a programmed temperature rising is performed to add the reaction liquid in sections to initiate a polymerization reaction; the polymerization reaction is kept warm to perform a polymerization reaction and polymerization reaction curing; a PDMDAAC hydrogel gel product is obtained; and after granulation, the product is dried to obtain a PDMDAAC hydrogel solid particle. The PDMDAAC hydrogel prepared by the application has strong water-absorbing property and high salt resistance; the water-absorbing ratio is above 3800.00 g / g in deionized water under normal temperature conditions, the water-absorbing ratio is above 100.00 g / g in physiological saline, and the monomer conversion rate is 91.32%.

The invention discloses low-medicament electroplating wastewater circulation treatment equipment and a treatment method.The low-medicament electroplating wastewater circulation treatment equipment comprises a fixing frame, and an electroplating water tank is welded to one end of the fixing frame. During use, NaOH-citric acid composite wheat straw is placed in a PVC column sleeve, then a biological contact oxidation frame is filled with pseudomonas three-dimensional elastic filler, and the biological contact oxidation frame is sealed; the PVC column sleeve is movably closed relative to the second supporting frame, the biological contact oxidation frame is movably closed relative to the first supporting frame, the movable frame is descended relative to the biological contact oxidation frame, the movable frame is movably descended relative to the PVC column sleeve, and finally, the NaOH-citric acid composite wheat straw surface hydroxyl, carboxyl and heavy metal ions are subjected to a complexation reaction. The surface of the pseudomonas three-dimensional elastic filler is inoculated with a compound microbial flora for microbial metabolism to degrade COD, a water pump is turned on, and water purified by the water pump is discharged into an electroplating water tank for circular treatment, so that the low-medicament electroplating wastewater circular treatment equipment and treatment method are completed.

Ligands capable of complexing hydrated lithium ions may comprise at least one arylboronic acid internally complexed with a heteroatom, such as via internal complexation with an amine, ether, or carbonyl to define a 5- or 6-membered ring. The arylboronic acid may be covalently bonded to a substrate via a linker moiety when accomplishing the foregoing, or the linker moiety may contain a reactive functionality capable of forming a covalent bond to a substrate or other group. The linker moiety may be further covalently bonded to an anionic functional group, such as a second arylboronic acid internally complexed with a second heteroatom. Ligands may also comprise at least one arylboronic acid internally complexed with a heteroatom, wherein the ligand is further covalently bonded to a molecule that undergoes a spectroscopic or electrochemical change in the presence of lithium ions. Substrate-bound or substrate-free lithium complexes may be formed using the ligands.

The invention discloses a multifunctional hydrogel which comprises polyethylene glycol diacrylate, methacrylated beta-cyclodextrin and a zwitterionic monomer, and the zwitterionic monomer is sulfobetaine methacrylate or [2-(methacryloyloxy) ethyl] dimethyl (3-sulfopropyl) ammonium salt; wherein the mass percentage of the polyethylene glycol diacrylate is 1-30%, the mass percentage of the zwitterionic monomer is 10-30%, and the mass percentage of the methacrylated beta-cyclodextrin is 1-5%. According to the invention, a polyethylene glycol diacrylate cross-linked skeleton is combined with a zwitterionic monomer to enhance hydrophilicity and ion complexing ability, so that a large-mesh structure is formed; and the beta-cyclodextrin derivative is selectively combined with the aromatic organic pollutants through the host-guest interaction. Through cooperation of multifunctional sites, dyes, drugs, metals and micro-plastics are removed at the same time. The multifunctional hydrogel disclosed by the invention has the advantages that the pollutant removal rate is increased, and the multifunctional hydrogel has reproducibility and can be applied to various water treatment processes.

The invention relates to a particle-size-adjustable low-corrosivity warm fog eliminating catalyst and a preparation method thereof, and belongs to the technical field of manual intervention weather catalysts. The catalyst comprises the following raw materials in percentage by mass: 5%-70% of inorganic sodium salt, 0%-30% of inorganic magnesium salt, 0%-30% of inorganic potassium salt, 5%-35% of weak acid and strong alkali salt, 0.1%-5% of an anti-caking agent and 0.1%-5% of an additive. According to the catalyst, weak acid and strong alkali salts are compounded with salts, a dual corrosion-resistant mechanism of passive film protection-ion complexing is constructed, the solution conductivity is reduced, and metal corrosion is retarded; the anti-caking agent can prevent caking during storage, and the dispersity is improved; the additive can reduce the salinization risk of the soil and optimize the flowability. According to the method, high-temperature and high-pressure equipment is not needed in the preparation process, the pressure and the rotating speed can be adjusted by monitoring particle size distribution in real time through a laser particle size analyzer according to the target particle size during airflow crushing, comprehensive performance improvement of accurate particle size regulation and control, low corrosion, caking resistance and high adaptation is achieved, the cost is reduced compared with that of existing composite catalysis, and industrial production can be achieved.

The invention relates to a method for depositing a zinc-nickel alloy on a substrate, the method comprising the steps of: (a) providing the substrate, (b) providing an aqueous zinc-nickel deposition bath as catholyte in a deposition compartment, wherein - the deposition compartment comprises at least one anode with an anolyte, and - the anolyte is separated from the catholyte by at least one membrane, and the catholyte comprises (i) nickel ions, (ii) at least one nickel ion complexing agent, and (iii) zinc ions, (c) contacting the substrate with the catholyte in the deposition compartment, such that the zinc-nickel alloy is electrolytically deposited onto the substrate and a zinc-nickel coated substrate is obtained thereby, wherein the concentration of the nickel ions in the catholyte is lower after step (c) than before step (c), (d) rinsing the zinc-nickel coated substrate in a rinsing compartment comprising water, such that a rinsed zinc-nickel coated substrate and a rinsing water are obtained, wherein the rinsing water comprises a part of the at least one nickel ion complexing agent and a part of the nickel ions, characterized in that (i) at least a part of the rinsing water and / or at least a part of the catholyte is treated in a first treatment compartment, such that water is separated from the at least one nickel ion complexing agent and the nickel ions, (ii) at least a part of the at least one complexing agent that is separated from the water is returned into the catholyte, and (iii) a source of nickel ions is added to the catholyte, with the proviso that the source of nickel ions does not comprise the at least one nickel ion complexing agent or any other nickel ion complexing agent.

The invention discloses a silver-ammonia complex carbonization-reduction silver-loaded diatom-based composite material and its preparation and application. In the preparation process of the material, triaminopropyltriethoxysilane (APTES) is used as a silicon source required for diatom growth, amino functional groups are introduced into the diatom shells, silver ions are added for complexation, and finally carbonization and reduction are performed to obtain a silver-loaded diatom shell material. The diatom shell material is prepared as a lithium-ion battery negative electrode material. The uniformly loaded Ag nanoparticles greatly improve the conductivity of the diatom biosilica, thereby obtaining a lithium-ion battery negative electrode material with excellent electrochemical properties. The invention has the advantages of being simple, efficient, green and low-consumption, and provides theoretical guidance for the development and utilization of silica negative electrode materials.

The invention belongs to the field of polymer separation membranes, and particularly discloses a hydrophilic antibacterial oil-water separation polyphenylene sulfide membrane material and a preparation method and application thereof, and the preparation method comprises the following steps: (S1) preparing a PPS microporous membrane by a thermally induced phase separation method; (S2) treating the PPS microporous membrane in a dilute nitric acid solution to obtain a nitric acid modified hPPS microporous membrane; (S3) dispersing CNF in water to obtain a CNF dispersion liquid; coating the surface of the hPPS membrane with the CNF dispersion liquid in a suction filtration deposition manner, and dipping the hPPS membrane in a solution containing Fe < 3 + > to obtain a CNF-hPPS membrane; and (S4) dipping the CNF-hPPS in a (hexamethyleneguanidine) hydrochloride solution to obtain the hydrophilic antibacterial oil-water separation polyphenylene sulfide membrane material. The polyphenylene sulfide micro (PPS) porous membrane is prepared by adopting a thermally induced phase separation method, and after acidizing treatment, cellulose nanofiber (CNF) and polyhexamethylene guanidine (PHMG) with specific content are combined in an ion complexing manner, so that the oil-water separation rate and antibacterial effect of the membrane are greatly improved under the condition of lower loss of membrane flux.

The invention relates to a monocrystalline silicon cleaning additive and a preparation method and application thereof, and the monocrystalline silicon cleaning additive comprises the following components by weight: 1-5 parts of an inorganic base; 0.5 to 3 parts of a surfactant; 1-3 parts of a corrosion inhibitor; 1-3 parts of a complexing agent; 2-5 parts of hydrogen peroxide; and 70-90 parts of deionized water. According to the additive disclosed by the invention, the synergistic removal of multiple pollutants such as organic matter degradation, metal ion complexation and particle suspension is realized through a composite formula, the dual purposes of rapid and powerful cleaning of the monocrystalline silicon wafer are achieved, and technical support is provided for cost reduction and efficiency improvement of the photovoltaic industry.

The invention discloses a method for chemical degradation pretreatment of a binder before disassembly of a lithium battery, and relates to the technical field of lithium batteries, and the method comprises the following operation steps: S1, preparation of a pretreatment solution: adding a weakly alkaline compound into deionized water, and mixing to prepare the weakly alkaline pretreatment solution with the mass concentration of 5-15%, adding a fluorine ion complexing agent with the mass concentration of 0.1-0.5% into the weakly alkaline pretreatment solution, and uniformly stirring and mixing to obtain a reaction solution; s2, lithium battery pretreatment: performing surface cleaning and discharging treatment on the lithium battery; according to the method for chemical degradation pretreatment of the binder before disassembly of the lithium battery, a fluorine ion complexing agent is added into a weakly alkaline pretreatment solution, and the reaction balance is broken and the molecular chain breakage of the binder is accelerated by virtue of the action that the fluorine ion complexing agent and fluorine ions generated by degradation of the binder form a stable complex.

The invention discloses an ionic composite graphene-activated carbon adsorbent and a preparation method and application thereof, and belongs to the technical field of pollutant adsorption. Graphene oxide is subjected to a base catalysis reaction to form quaternized electropositive graphene oxide; activated carbon is subjected to acid catalysis treatment to increase the phenolic hydroxyl density of the activated carbon, electronegative activated carbon is formed, and finally the two kinds of carbon material turbid liquid react to generate the composite carbon adsorption material connected by N + and O-. The prepared adsorbent has larger adsorption capacity and excellent conventional pollutant adsorption performance; when the adsorbent is used for treating papermaking wastewater, the alkaline pH environment of the papermaking wastewater can enable the adsorbent to release oxygen anions and nitrogen cations, the cellulose colloid steady state of the papermaking wastewater is broken through surface charges, meanwhile, residual pollutants in sewage are captured, the adsorption effect is further enhanced, and the defects that a traditional carbon-based adsorption material is single in electrical property and poor in adsorption effect are overcome. The high-alkalinity papermaking chemi-mechanical pulp wastewater with complex components is difficult to deal with.

The invention provides a palladium-cobalt alloy electroplating solution and application thereof. The palladium-cobalt alloy electroplating solution comprises 2-20 g / L of palladium ions, 0.5-8 g / L of cobalt ions, 5-20 ml / L of a complexing agent, 1-10 ml / L of an accelerator, 5-15 ml / L of a wetting agent, 2-30 ml / L of a leveling agent and the balance of a solvent. The blind hole filling performance of the palladium-cobalt alloy electroplating solution is excellent, palladium-cobalt alloy deposited through the electroplating solution is low in porosity and high in migration resistance and can replace copper to become interconnection metal in the advanced packaging technology, an additional barrier layer is not needed between the palladium-cobalt alloy electroplating solution and a semiconductor substrate, the resistance of an interconnection line can be reduced, RC delay is reduced, and the performance of the interconnection line is improved. The problems that in the integrated circuit manufacturing technology, copper is adopted as interconnection metal, the electromigration resistance of copper is poor, and the conductivity under the nanoscale is greatly reduced are solved.

The application discloses a method for separating inert perfluoropolyether and active perfluoropolyether carboxylate by ion complex extraction, which comprises the following steps: dissolving a mixture containing inert perfluoropolyether and active perfluoropolyether carboxylate in a fluorine-containing solvent, contacting the mixture with an ion complex extraction agent, collecting the ion complex extraction agent phase after extraction equilibrium to obtain enriched active perfluoropolyether carboxylate, and collecting the fluorine-containing solvent phase to obtain enriched high-purity inert perfluoropolyether; the active perfluoropolyether carboxylate is perfluoropolyether with a carboxylate end group; the fluorine-containing solvent is one or more of a hydrofluoroether, a fluorine-containing ester, a perfluorinated or partially fluorinated alkane, and a perfluorinated or partially fluorinated aromatic solvent; and the ion complex extraction agent is an aqueous solution containing one or more of an ionic compound, a polyelectrolyte, and a guanidine compound.

This invention belongs to the field of biosensing technology, specifically relating to a G-MXene-PAA-Fe 3+ Hydrogels, their preparation methods, and applications. This invention modifies MXene with antioxidants to prepare modified G-MXene; then, using acrylic acid (AA) free radical polymerization chemical crosslinking as the first network, polyacrylic acid (PAA)-Fe... 3+ Metal ions are complexed into a second network, and modified G-MXene is used as a crosslinking agent and conductive nanofiller. G-MXene-PAA-Fe is prepared using a simple and easy-to-operate one-pot method with ammonium persulfate as the initiator. 3+ Self-healing conductive hydrogel. The self-healing conductive hydrogel prepared by this invention has excellent stability, self-healing properties, mechanical properties, conductivity, and sensing properties, and has broad application prospects in the field of flexible sensors.

The application discloses a detection method of the content of chloride ions in mixed acid-based all-vanadium electrolyte, and relates to the field of batteries. The detection method comprises the following steps: providing a to-be-detected liquid, adding vanadium ion complexing agent, potassium permanganate and ascorbic acid into the to-be-detected liquid in sequence to obtain a pretreated liquid; adjusting the pH value of the pretreated liquid to be 6.5-10.5, adding a titration indicator, adding a silver nitrate standard solution dropwise, carrying out a titration reaction, and obtaining the volume V of the silver nitrate standard solution consumed; and calculating the content of chloride ions in the to-be-detected liquid according to the obtained volume V. In the technical scheme, the vanadium ion complexing agent is first added into the to-be-detected liquid, and then the vanadium ions in the to-be-detected liquid can be effectively and stably complexed in cooperation with potassium permanganate, so that vanadate is avoided from appearing when the pH value is adjusted subsequently, and thus the interference of vanadium ions on the detection of chloride ions is avoided, and the accuracy of the detection result of the content of chloride ions is ensured.

The present invention relates to a solution for electroplating iron, comprising: iron ions comprising first iron ions and second iron ions; a complexing agent; and unavoidable impurities, wherein the amount of second iron ions among the iron ions is 5 to 60 wt %. According to the present invention, electroplating efficiency is high, there is no drop in electroplating efficiency due to a continuous plating operation, and sludge generation is prevented, and, thus, the plating solution is easily managed. Burning can be prevented even in a high current density operation, and, thus, a high-quality iron-plated layer can be achieved. The plating solution does not need to be replaced, as the concentration of second iron ions generated by a plating reaction is maintained to be constant, and, thus, the present invention is appropriate for a continuous plating process.

The application discloses a copper plating composition and a chemical copper plating process, and relates to the field of copper plating compositions, which is composed of the following components: a copper salt providing divalent copper ions; a complexing agent for complexing the divalent copper ions; a stabilizer for stabilizing the copper plating composition, which is selected from at least one of the group consisting of 2,2'-dipyridyl, potassium selenocyanate, potassium thiocyanate and 2-mercaptobenzimidazole; a reducing agent for reducing the complexed divalent copper ions to metallic copper; an alkaline adjusting agent for adjusting the pH value of the composition to an alkaline range suitable for chemical copper plating; and a solvent. The process stability and product yield are improved: through the optimized combination of the core stabilizer, the complexing agent and the reducing agent, the self-decomposition of the copper plating bath is effectively inhibited, the process stability is significantly enhanced, the incidence of key defects such as backlight defects in the metalization of the circuit board hole is greatly reduced, and the high yield of the final product is ensured.

A supramolecular histochemistry system for staining includes a chaotropic ion and a chaotropic ion complexing agent that acts as a molecular host and accepts the chaotropic ion as a molecular guest. The chaotropic ion facilitates the diffusion of a probe, such as an antibody, into and within a tissue sample, binding the probe to the molecular host or diluting the probe, thereby promoting the association of the antibody with a target antigen and generating an immunostaining or histochemistry signal. Alternatively, a small fluorescent probe serves as the molecular guest and is complexed by the supramolecular host to facilitate deep penetration. A method for performing histology employs the supramolecular system with deep, uniform histochemistry. Such a method is relatively rapid, scalable, automatable, and cost-effective.

The invention provides an anti-adhesion, antibacterial and corrosion-resistant coating and a preparation method thereof, and relates to the technical field of medical auxiliary instruments. The anti-adhesion antibacterial corrosion-resistant coating comprises an inner layer and an outer layer, the inner layer is a quercetin-zinc ion complex coating, the outer layer is a parylene coating, the quercetin-zinc ion complex coating is attached to the surface of a magnesium alloy sample, and the parylene coating is attached to the surface of the quercetin-zinc ion complex coating. The preparation method comprises the following steps: S1, pretreating a magnesium alloy sample; s2, preparing a quercetin and zinc ion complex coating; and S3, preparing the parylene coating containing the nano holes. According to the magnesium alloy orthopedic implant material disclosed by the invention, the double coatings act together and have synergistic interaction, so that the magnesium alloy orthopedic implant material has antibacterial adhesion, long-acting antibacterial property and long-acting corrosion resistance, and has a good application prospect.

The invention discloses a preparation method and application of a polyelectrolyte type copolymer binder, and the preparation method comprises the following steps: S1, taking acrylic acid and polyethylene glycol methyl ether methacrylate as reaction monomers, and synthesizing an acrylic acid copolymer through a free radical polymerization reaction initiated by ultraviolet light in the presence of a photoinitiator; and S2, adding a diluent into the acrylic copolymer to prepare a polymer solution, then adding an amino-containing small molecular compound into the polymer solution for modification, and reacting to prepare the polyelectrolyte copolymer binder. According to the preparation method and the application of the polyelectrolyte type copolymer binder, the polyelectrolyte type copolymer binder with a three-dimensional network structure is formed through the reaction of carboxyl and amino, the ion complexing effect and the hydrogen bond synergistic effect by utilizing the acid-base neutralization reaction of the acrylic acid copolymer and the amino-containing small molecular compound; the adhesion performance and the ion conduction capability of the binder are remarkably improved, and the binder shows excellent electrochemical performance when applied to a silicon-carbon negative electrode.

The invention belongs to the field of purification and extraction of vanadium. The invention discloses a method for preparing low-lead ammonium polyvanadate by using a calcified acid vanadium leaching solution. The method comprises the following steps: taking a qualified liquid supernatant of the calcified acid leaching vanadium liquid, and controlling the pH value of the supernatant to be 2.4-3.0; adding ethylenediaminetetraacetic acid into the supernate, and stirring for a preset time to enable lead ions in the solution to be fully complexed with the ethylenediaminetetraacetic acid; adjusting the pH value of the solution to the pH value required by vanadium precipitation under an acidic condition; adding a vanadium precipitation agent into the solution; and heating the solution added with the vanadium precipitation agent to precipitate vanadium, filtering, and drying the solid to obtain the low-lead ammonium polyvanadate. According to the method, EDTA serves as a lead ion complexing agent, lead ions in the solution are combined with EDTA before vanadium precipitation, the stability of the lead ions in the solution is improved, the probability that lead precipitates along with vanadium in the follow-up vanadium precipitation process is reduced, the content of lead in ammonium polyvanadate is reduced, and a low-lead APV product meeting the battery application requirement can be obtained.