79 results about "Hydroxyl ion" patented technology

The invention discloses a nickel-cobalt layered double hydroxide for a supercapacitor and a preparation method and application thereof, and belongs to the technical field of energy storage. The preparation method of the nickel-cobalt layered double hydroxide for the supercapacitor comprises the following steps: performing hydrothermal reaction on nickel salt, cobalt salt, ammonium citrate and urea to obtain the nickel-cobalt layered double hydroxide, the temperature of the hydrothermal reaction is 120-150 DEG C, and the time of the hydrothermal reaction is 6-12 hours. According to the invention, ammonium citrate is added to regulate the precipitation rate of the precursor, so that the morphology of the nickel-cobalt layered double hydroxide can be regulated and controlled, and the situation that the nickel-cobalt layered double hydroxide is rapidly combined with hydroxyl ions to cause too fast crystallization and coarse crystal grains is avoided; and meanwhile, the concentration uniformity of metal ions in the solution is regulated and controlled, so that the crystallinity of the nickel-cobalt layered double hydroxide is uniform, and lattice defects are reduced. Therefore, when the material is used as an electrode material of a supercapacitor, the material has relatively high specific discharge capacity.

The invention relates to a vertical flow biological induction dephosphorization system and a dephosphorization process. The system comprises a reactor body, an inner barrel and an outer barrel, wherein the inner barrel and the outer barrel form an inner reaction cavity and an outer reaction cavity; the flow guide device is communicated to the axial bottom end of the inner cylinder; the aeration device is arranged in the flow guide device and is used for aerating upwards; and the dephosphorization agent adding device is used for adding a dephosphorization agent while crushing particles below the flow guide device. By additionally arranging a dephosphorization agent adding device, large-particle-size anaerobic ammonia oxidation particles are crushed, a dephosphorization agent is added at the same time, an alkaline environment created by hydroxyl radicals generated by anaerobic ammonia oxidation reaction and microorganisms are used for synergistically promoting a dephosphorization path, a biological induced crystallization reaction is enhanced, and the dephosphorization effect is improved. According to the invention, calcium and magnesium ions are added into the phosphorus removal agent, the excessive calcium and magnesium ions and phosphate ions in the sewage are promoted to be subjected to a crystallization reaction, the free phosphate ions are converted into phosphorus-containing precipitates, the purposes of phosphorus removal and phosphorus resource recovery can be achieved, the dosage of alkaline agents in the phosphorus removal agent can be reduced, and considerable economic benefits are achieved.

The application relates to the field of wastewater treatment catalysis, and discloses a Fe-Cu-Mn ternary hydrotalcite-like catalyst and a preparation method thereof, which comprises iron, copper and manganese; the iron, copper and manganese are distributed in the layer plate metal central site in an atomic dispersion mode; the layer plate oxygen octahedron is in a non-symmetrical stretching distortion state; a 3.2-4.8 degree deviation is generated in the manganese oxygen copper bond angle in the layer plate; the lattice parameter a of the layer plate 110 crystal face direction is 0.305-0.312 nm; the molar ratio of copper to manganese is 1:2-1:5; and the molar sum of copper and manganese to the molar ratio of iron is 2:1-4:1. According to the application, the lattice non-symmetrical distortion induces the space overlap of the auxiliary metal and the iron active center orbit, an electron transfer path is constructed, the shielding effect of the hydroxyl ion on the iron active site under the alkaline environment is eliminated, the catalytic site activity is maintained, and stable and efficient catalytic treatment under wide pH working conditions is realized.

The application discloses a cross-linked polyaryl piperidine anion exchange membrane and a preparation method and application thereof, and relates to the technical field of anion exchange membranes. The anion exchange membrane takes polyaryl piperidine as a skeleton, introduces crown ether structure and a cross-linked network, and solves the technical problem that the balance between the hydroxyl ion conductivity and the dimensional stability is difficult in the existing anion exchange membrane. The anion exchange membrane comprises a specific structure of a repeating unit, is prepared through Friedel-Crafts superacid catalytic polymerization, Menshutkin reaction functionalization and Michael addition reaction cross-linking, and has excellent hydroxyl ion conductivity, dimensional stability, chemical stability and mechanical strength. The preparation method is simple in operation, fast in polymerization rate, and high in conversion rate, does not need to strictly control the temperature and oxygen of a reaction environment, is suitable for the field of water electrolysis hydrogen production, especially suitable for an anion exchange membrane water electrolysis system, and has a wide industrial application prospect.

The invention provides a microbubble-assisted iron-based catalyst oxidative degradation method, which comprises the following steps: pretreating a water body, introducing an iron-based catalyst, introducing microbubbles into the water body, and carrying out oxidative degradation. The micro-bubbles enrich a large amount of hydroxyl ions by using a huge gas-liquid interface potential difference, and provide a continuous electron donor environment for the iron-based catalyst, so that a non-traditional Fenton-like reaction is initiated and maintained, and hydroxyl radicals are efficiently and continuously generated under acidic or neutral conditions without adding hydrogen peroxide. The method overcomes the dependence of the traditional Fenton technology on a strong acid environment and a large amount of hydrogen peroxide, is low in operation cost, is environment-friendly, and is suitable for treating degradation-resistant organic wastewater, low-valence metal ion wastewater and the like.

The application provides a carbon dioxide capturing method. The carbon dioxide capturing method comprises the following steps: spraying an alkaline solution through a spraying structure, so that the alkaline solution flowing out of the spraying structure chemically reacts with carbon dioxide gas in a gas to absorb the carbon dioxide gas; buffering the solution after the chemical reaction with the carbon dioxide gas through a buffering structure, and making the solution buffered in the buffering structure flow out through the spraying structure; detecting the concentration of hydroxyl ions and / or the concentration of carbonate ions in the solution in the buffering structure in real time, and supplementing the alkaline solution or water in the buffering structure according to the concentration of hydroxyl ions and the concentration of carbonate ions; if the concentration of hydroxyl ions is less than or equal to m and the concentration of carbonate ions is n, stopping the operation of a circulating pump to make the solution buffered in the buffering structure enter an electrolysis device to be electrolyzed. The application effectively solves the problem that the capturing efficiency of carbon dioxide gas and the overall energy consumption of the carbon dioxide capturing system in the prior art are difficult to control.

The application discloses a preparation method of high-light water-based aluminum silver paste self-laminating paint, relates to the technical field of paint preparation, and comprises the following steps: adding water-based resin and modified silicon resin into a high-speed dispersion kettle, preliminarily mixing the water-based resin and the modified silicon resin after stirring to form a resin base, adding organic silicon additives, a thickening agent and a pH regulator into the resin base in sequence, stirring and adjusting the viscosity and the pH value of the system, immersing a substrate to be coated in an alkali solution of hydroxyl ions to remove surface grease and a loose layer, washing the substrate with water, immersing the substrate in an acid solution of hydrogen ions for treatment, finally washing the substrate with water and drying the substrate, removing residual solvents and moisture from the cooled reflection layer by soft drying, and obtaining the water-based aluminum silver paste paint with a self-laminating structure. According to the preparation method, the high-light water-based aluminum silver paste paint with the self-laminating structure is prepared by optimizing filler modification, resin proportioning, surface treatment and heating processes, and the paint can provide excellent reflection performance, and ensure the stability, uniformity and adhesion of the coating.

The invention discloses a method for treating polychlorinated nitrobenzene-containing wastewater by adopting calcium hydroxide alkaline hydrolysis. The method comprises the following steps: firstly, adding calcium hydroxide into wastewater containing polychlorinated nitrobenzene, carrying out hydrolysis reaction under stirring and temperature control conditions, carrying out nucleophilic substitution on activated chlorine substitution sites and nitro substitution sites in polychlorinated nitrobenzene molecules by utilizing hydroxyl ions to generate phenolic substances such as trinitrodichlorophenol and the like, and separating the phenolic substances to obtain the polychlorinated nitrobenzene-containing wastewater. Performing ultrasonic treatment on the first treatment liquid until the solution turns yellow and the chromaticity is not increased any more to obtain a first treatment liquid, and performing ultrasonic treatment, washing and filtering on the first treatment liquid to remove precipitated solids to obtain the treatment liquid. According to the method disclosed by the invention, the primary attenuation of the polychlorinated nitrobenzene-containing wastewater is realized, and the treatability of the wastewater is improved.

The application provides a method for preparing bismuth trioxide-cuprous oxide nanocomposite based on a synergistic reaction, which comprises the following steps: dispersing sodium bismuthate, sodium sulfite and cuprous chloride in deionized water to obtain a solid-liquid mixture; and placing the solid-liquid mixture under a hydrothermal condition, so as to in-situ prepare the Bi2O3-Cu2O nanocomposite through the synergistic effect of the redox reaction between sodium bismuthate and sodium sulfite in the system and the anion exchange reaction between cuprous chloride and hydroxyl ions generated in-situ. The application is based on the synergistic effect of the redox reaction and the anion exchange reaction under the same hydrothermal condition, and high-purity Bi2O3-Cu2O nanocomposite can be prepared in-situ in one step without adding an alkali source and a template agent. The prepared composite can effectively form a p-n heterojunction, significantly inhibit the recombination of photo-generated carriers, improve the photocatalytic activity and redox capacity of the material, and the preparation process is simple, green and economical, and easy for industrialized production.

The present application belongs to the technical field of fine chemical industry and water-based paint, and particularly relates to a use of adipic acid bis(1-butoxy-2-propyl) ester as a film-forming aid, a preparation method and a water-based paint composition. In view of the requirement of water-based paint for SVOC limit and the pain point that long open time and high paint film strength are difficult to be achieved simultaneously, constant azeotropic esterification is adopted to prepare non-SVOC odor-free target ester compounds. When the ester compounds are applied to water-based paint, the film-forming aid utilizes the specific large secondary methyl of the molecule to construct steric hindrance, effectively blocks the nucleophilic attack of hydroxyl ions, and solves the problem of alkaline catalytic hydrolysis of paint. The adipic acid bis(1-butoxy-2-propyl) ester has the following structure:

The invention provides a water electrolysis oxygen evolution catalyst and a preparation method and application thereof.The catalyst is obtained by adding a mixed solution of iridium trichloride trihydrate and sodium hydroxide into a Co3O4 dispersion solution for a reaction, and the chemical expression of the catalyst is Ir-OH / Co3O4, according to the water electrolysis oxygen evolution catalyst, hydroxide radicals of sodium hydroxide are used for replacing chloride ions of iridium trichloride trihydrate, so that iridium active sites are adjusted, and the activity of the catalyst is improved. Hydroxyl ions are introduced to replace chloride ions to adjust iridium active sites, so that the activity of the catalyst is improved. The electrocatalyst synthesized by the method is applied to oxygen evolution reaction (OER) and can show excellent electrocatalytic activity.

This invention belongs to the field of materials synthesis technology, specifically relating to an aluminum-based metal-organic framework powder material and its preparation method. The preparation method includes the following steps: mixing organic ligand powder and slightly soluble alkali powder, adding water, stirring and mixing, and ultrasonically dispersing to obtain a uniform emulsion; mixing aluminum salt with water and stirring to obtain an aluminum salt aqueous solution; adding the aluminum salt aqueous solution to the uniform emulsion, stirring and ultrasonicating to obtain a mixed solution; heating the mixed solution under reflux, filtering to remove filter residue, washing with water, washing with alcohol, drying, and vacuum activation to obtain the aluminum-based metal-organic framework powder material. The slightly soluble alkali used in this method can slowly release hydroxyl ions during the heating synthesis of the aluminum-based metal-organic framework powder material, forming a dynamic slightly alkaline environment, slowing down the deprotonation rate of the organic ligands, which is beneficial to improving the crystallinity of the material, forming a material with a regular pore structure, and enhancing the adsorption performance of the material.

The invention belongs to the technical field of hydroxyl conductive polymer materials, and discloses a flexible aryl piperidine type anionic binder as well as a preparation method and application thereof. According to the binder, a flexible aromatic structure unit is introduced into a polymer main chain, so that the flexibility of the main chain is effectively regulated and controlled, and the compatibility and dispersity of the binder and a metal oxide catalyst are improved; meanwhile, a proper amount of branching agent is introduced to inhibit chain segment accumulation and swelling effects caused by high flexibility, so that the size stability and the mechanical strength are both considered. The anion exchange binder obtained by the method has high chemical stability, high dispersity and high interface regulation and control capability at the same time. The obtained anionic binder solution and metal oxide catalyst particles are prepared into uniform catalyst ink, and a catalyst layer covered with the flexible anionic binder is obtained through the catalyst ink. The catalyst layer can realize uniform distribution of catalyst particles, and can remarkably optimize a gas-liquid-solid three-phase interface, so that the catalyst utilization rate and the oxygen evolution reaction performance are effectively improved.

The invention discloses a combined negative electrode additive for a zinc-bromine flow battery, a negative electrode electrolyte, a preparation method of the negative electrode electrolyte and the zinc-bromine flow battery, and belongs to the technical field of electrochemical energy storage, and the combined negative electrode additive for the zinc-bromine flow battery comprises indium trichloride and glycine in a molar ratio of 1: (3.33-60); during charging, indium ions in indium trichloride are reduced into metal indium on the surface of the electrode, the metal indium and the post-deposited zinc generate a nanoscale alloy layer in situ, electric field distribution is homogenized, and zinc dendritic crystal growth is inhibited; carboxyl and amino of glycine are used as electron donors to form a water-soluble complex with zinc ions, so that the reduction kinetics of the zinc ions on the surface of the electrode is slowed down; polar functional groups of glycine are adsorbed on active sites on the surface of a zinc electrode, zinc ion deposition is blocked, energy distribution of the electrode and an electrolyte interface is changed, zinc is guided to perform transverse two-dimensional growth, zinc dendrite growth is inhibited, hydroxyl ions are neutralized, and hydrogen evolution reaction is inhibited. The coulombic efficiency of the zinc-bromine flow battery is 95.4%-97.0%; the energy efficiency ranges from 81.85% to 84.49%; and the voltage efficiency is 85.8%-87.1%.

The invention provides silicon-based negative electrode slurry and a preparation method thereof, a negative electrode plate and application, and belongs to the technical field of battery materials, the silicon-based negative electrode slurry comprises a pre-lithiated siloxy material, a conductive agent, a binder, maleic acid and a solvent; the mass of the maleic acid is 2.57%-11% of the mass of the pre-lithiated siloxy material. By introducing the maleic acid with a specific content, the reaction of silicon and hydroxyl can be reduced to inhibit hydrogen production, and the situation that the uniformity and stability of the slurry are damaged by excessive hydrogen is avoided; and secondly, chemical reaction with active groups on the surface of the pre-lithiated siloxy material can be carried out to form stable chemical bonds to generate a steric hindrance effect, so that aggregation of the silicon-based negative electrode material is prevented, the viscosity of the slurry is reduced, and the uniformity and stability of the slurry are improved. In addition, due to the introduction of maleic acid, the peel strength of the negative pole piece can be remarkably improved, and the battery performance is also remarkably improved.

The present application relates to a preparation method of high-purity lithium sulfide, and belongs to the technical field of lithium sulfide preparation. The present application solves the technical problem of providing a preparation method of high-purity lithium sulfide. The method comprises the following steps: a, mixing and grinding a sulfur source and a lithium source, mixing the ground material with hydrazine hydrate to obtain a reaction material; b, mixing and reacting to obtain lithium sulfide slurry; c, heating the lithium sulfide slurry to 100-120 DEG C, drying for 1-2 hours, then adding sulfur powder and anhydrous hydrazine, heating to 400-410 DEG C, drying for 1-2 hours to obtain high-purity lithium sulfide powder. The present application is prepared by a simple reaction operation, one-pot method, after stage heating and drying and feeding, the lithium sulfide is reacted twice, the product purity can reach more than 99.9%, and the hydroxyl ion content is less than 0.01%. The method for preparing lithium sulfide is simple in process, strong in operability, low in energy consumption, can be produced on a large scale, has no secondary pollution, can meet the requirements of safe operation and commercialization of high-purity lithium sulfide, and can meet the requirements of safe operation and commercialization of high-purity lithium sulfide.

The application discloses a self-driven oxygen purification battery system and application thereof, which comprises a cathode gas diffusion electrode, an ion exchange membrane, an anode oxygen evolution electrode and a dehydration dryer. The cathode chamber is filled with acidic electrolyte, and the anode chamber is filled with alkaline electrolyte. The cathode gas diffusion electrode is loaded with an acidic oxygen reduction catalyst for selectively catalyzing the oxygen reduction reaction from air containing nitrogen, carbon dioxide and oxygen; and the anode oxygen evolution electrode is loaded with a non-noble metal oxygen evolution catalyst for catalyzing the oxidation of hydroxyl ions to generate oxygen. The application utilizes the ion concentration difference formed by the acid / alkali double electrolyte as a driving force, and the theoretical open circuit voltage can reach pH*0.059 V. The system can purify oxygen in air to a purity of more than 99% while spontaneously generating electricity, and the acidic environment on the cathode side effectively avoids the interference of carbon dioxide in air. The system has great application prospects in the fields of medical oxygen supply, deep-sea diving, highland operation and the like.

The invention discloses a method for preparing lactic acid by using a reactor with a porous solid electrolyte, which comprises the following steps of: catalyzing hexose to react by using alkali liquor to generate a lactate solution, then introducing the lactate solution into a middle chamber of the reactor with the porous solid electrolyte to separate, and separating the lactate under the action of an electric field to obtain the lactic acid. Hydrogen ions generated by the anode chamber of the reactor can penetrate through the proton exchange membrane to enter the middle chamber and are combined with lactate to generate lactic acid; meanwhile, positive ions in the lactate migrate to the cathode chamber and are combined with hydroxyl ions generated by a cathode hydrogen evolution reaction to be regenerated into an alkali solution, lactic acid is obtained in the middle chamber, and meanwhile the alkali solution is obtained at the cathode through recovery. According to the method, efficient preparation and separation of lactic acid are achieved, meanwhile, the obtained alkali liquor can be reused for pretreatment of hexose, material circulation is achieved, waste water and waste salt are not discharged, separation energy consumption is low, waste of alkali is avoided, the green circular economy concept is met, and carbon emission in the whole process is low.

The invention discloses a polyaralkyl anion exchange membrane and a preparation method and application thereof, and belongs to the technical field of hydrogen production through water electrolysis. A highly hydrophobic perfluoroalkyl side chain and a hydrophilic ureido side chain are introduced into a main chain, and an ion transmission channel is constructed by utilizing hydrophilic and hydrophobic thermodynamic incompatibility; and the formation of the ion channel facilitates the transmission of hydroxyl ions. A hydrogen bond network formed among introduced ureido also promotes efficient transmission of ions, so that the conductivity is improved. On the aspect of mechanical property, on one hand, the lower ion exchange capacity (IEC) can inhibit excessive swelling, and the mechanical property in a wet state is improved; on the other hand, a constructed hydrogen bond is introduced into ureido, so that the interaction force between polymer molecular chains is enhanced, the interchain entanglement is improved, and the anion exchange membrane is endowed with better mechanical properties. The invention effectively solves the problem of mutual restriction effect between high ionic conductivity and wet mechanical properties of the anion-exchange membrane in the existing anion-exchange membrane water electrolysis tank.

The carbon dioxide conversion system comprises a first mixing chamber, an electrochemical reactor, a first conversion unit and a second conversion unit, the feeding end of the first mixing chamber is suitable for introducing a to-be-reacted object and water; the discharge end of the first mixing chamber is communicated with the feed end of the electrochemical reactor, and the electrochemical reactor is configured to perform a water half-splitting reaction on water to generate hydroxyl ions and hydrogen ions, and respectively react with a to-be-reacted object based on the generated hydroxyl ions and hydrogen ions to generate a first product and a second product; the feeding end of the first conversion unit is communicated with the first discharging end of the electrochemical reactor, and the first conversion unit is configured to convert a first product generated by the electrochemical reactor; the feeding end of the second conversion unit is communicated with the second discharging end of the electrochemical reactor, and the second conversion unit is configured to capture carbon dioxide by using a second product generated by the electrochemical reactor and convert the carbon dioxide into a third product.

The invention discloses an alkaline electrolytic water hydrogen production diaphragm based on modified cerium oxide and a preparation method thereof, and relates to the technical field of alkaline electrolytic water hydrogen production diaphragms. The preparation method comprises the following steps: carrying out modification treatment on cerium dioxide by using an acid solution, and then dispersing the cerium dioxide in a mixed solution of polysulfone resin, N-methyl pyrrolidone and polyvinylpyrrolidone to prepare a membrane casting solution; and soaking the polyphenylene sulfide net in the membrane casting solution, determining the thickness through blade coating, then pre-evaporating, and carrying out phase inversion and cleaning in deionized water to obtain the diaphragm. The preparation method is simple in process, the prepared diaphragm is uniform and flat in surface, has high chemical inertness and hydrophilic characteristics in a strong alkaline electrolysis environment, guarantees an efficient migration channel of hydroxyl ions, and has low surface resistance.

The invention relates to a preparation method of an organic acid anion regulation hydrogen bond network electrode, the method is simple and convenient in process, an MOF material containing an organic acid ligand is used as a precursor, selective structure mismatch is generated through in-situ electrochemical treatment, dissociated metal ions and hydroxyl ions in an electrolyte are subjected to secondary coordination, and the organic acid anion regulation hydrogen bond network electrode is obtained. Thus, an amorphous catalyst for anchoring organic acid anions is formed on the surface of the electrode. Organic acid anions reserved on the surface of the catalyst can construct a stable and ordered hydrogen bond network structure with water molecules on an electrode electrolyte interface, the proton transfer process is regulated and controlled, reaction intermediates are stabilized, side reactions are inhibited, and the catalytic activity is remarkably improved. The invention further relates to application of the electrode in an oxygen reduction reaction and methanol oxidation reaction coupling system, and results show that the selectivity of the electrode in the reaction system, the selectivity of target products H2O2 and the selectivity of formate both exceed 90%, and the electrode can stably run for 200 h or above and has excellent catalytic performance and stability.

The application relates to a semi-water-splitting unit and an electrochemical reactor with the same, wherein the semi-water-splitting unit is used for the conversion of carbon dioxide and comprises a first power supply, a cathode film, an anode electrode and an insulating diaphragm arranged in sequence and adjacent to each other, a preset distance is arranged between the insulating diaphragm and the anode electrode to form a first cavity, water is injected into the first cavity; the anode electrode is connected to the anode of the first power supply, and when water is injected into the first cavity, the anode electrode can electrolyze the water to generate hydroxyl ions and precipitate from the cathode film, so that when a reaction substance is put into the side of the cathode film away from the anode electrode, the hydroxyl ions react with the reaction substance to generate hydroxide, and the hydroxide reacts with the treated carbon dioxide to generate carbonate, thereby completing the conversion of the treated carbon dioxide.

The application relates to the technical field of fuel cells, and particularly discloses a preparation method of an attapulgite fluid composite alkaline polyelectrolyte membrane, which comprises the following steps: (1) preparing an attapulgite fluid; (2) dissolving quaternary ammonium chitosan and polyvinyl alcohol to obtain a mixed casting solution; and (3) filling the attapulgite fluid into the mixed casting solution, and taking glutaraldehyde as a crosslinking agent to obtain the attapulgite fluid composite alkaline polyelectrolyte membrane. When the molecular structure of the attapulgite fluid is designed, a cation layer with anion exchange function is grafted on the outer layer, the cation activity of the cation layer on the outer layer of the attapulgite fluid is stronger, a more continuous channel is constructed for the transmission of hydroxyl ions, and the transmission capacity of the composite membrane for anions is significantly improved. The composite membrane has high ion conductivity and excellent mechanical properties, and has a wide application prospect in the field of fuel cell alkaline anion exchange membranes.

The application provides a method for reviving an alcohol amine solution. The method for reviving the alcohol amine solution comprises the following steps: performing first adsorption treatment on the alcohol amine solution to be revived by using a hydrogen phosphate removing agent to obtain a first solution and an adsorption system; performing second adsorption treatment on the first solution by using a hydroxyl ion exchange resin and a methyldiethanolamine cation exchange resin in sequence to obtain a second solution; performing second mixing treatment on the adsorption system by using an ammonium sulfate solution to obtain a third solution and a removing agent to be regenerated; performing second mixing treatment on the third solution by using a hydrogen ion exchange resin to obtain a fourth solution; and performing third mixing treatment on the second solution and the fourth solution to obtain a revived alcohol amine solution. The method for reviving the alcohol amine solution can remove the heat stable salt in the alcohol amine solution to be revived, and hardly causes loss of ammonium hydrogen phosphate in the alcohol amine solution to be revived.

The invention belongs to the technical field of anion exchange membranes, and discloses a calix [4] arene-based microporous polyaryl piperidine anion exchange membrane as well as a preparation method and application thereof. Regulating and controlling the topological structure of the main chain of the polymer by regulating the feeding proportion of the rigid calix [4] arene monomer and the p-terphenyl monomer in the main chain; and carrying out quaternization reaction on the obtained polymer to obtain a functionalized microporous polymer, and finally, casting a solution to form the membrane. According to the invention, a three-dimensional annular calix [4] arene structure is introduced into a polymer main chain, a flexible side chain is guided to be self-assembled along a non-coplanar direction by utilizing an easily-modified site at the edge of the upper part of the polymer main chain, and mutually-communicated ion micropore nano-channels are constructed in the membrane, so that the transmission efficiency of hydroxyl ions is remarkably improved. Meanwhile, the rigid calix [4] arene skeleton forms a three-dimensional branched network in the polymer, so that the mechanical strength and the dimensional stability of the membrane are effectively enhanced, and swelling of the membrane is inhibited.

The invention provides an electrolytic bath and a sodium hypochlorite generator, the electrolytic bath comprises a reaction unit, the reaction unit comprises an air cathode and an anode which are in a sheet shape and are arranged at an interval, the air cathode and the anode are sealed through a sealing spacer and form a liquid chamber, an air chamber is formed on one side, far away from the anode, of the air cathode, and the air chamber is communicated with the liquid chamber. The air cathode is used for reducing oxygen into hydroxyl ions; and the sealing spacers are arranged in the electrolytic bath in a criss-cross manner, so that a liquid chamber and a gas chamber which are isolated from each other are formed. The oxygen reduction reaction is adopted to replace the traditional cathode hydrogen evolution reaction, the structure is simple, the sealing spacers in the device are arranged in a criss-cross mode, it is guaranteed that oxygen makes full contact with an air cathode catalyst layer, and the problems of electrolyte disturbance, reaction efficiency reduction and the like caused by mixing of air and saline water are solved.

The present application relates to the field of industrial circulating water treatment, and provides a system and method for improving the concentration multiple of circulating water to achieve near zero discharge, the system comprising an alternating electromagnetic wave enhancement unit, which pre-treats the circulating water by releasing alternating electromagnetic waves to promote the activity of the dipole charges in the circulating water; a scale removal and elimination unit, which forms calcium and magnesium ion oxides by adsorbing the polarized calcium and magnesium ions and hydroxyl ions and carbonate ions on the electrode, thereby reducing the hardness and alkalinity of the circulating water and removing the scale; a filtration and detection unit, which filters the circulating water and detects the filtered circulating water; a sterilization and algae inhibition unit, which releases metal cations to sterilize; and a control system, which adjusts the operating parameters based on the detection data. The present application solves the defects of low concentration multiple, scaling corrosion and uncontrollable biological slime in traditional circulating water treatment, and is suitable for a circulating water treatment method in multiple scenarios to achieve high concentration multiple operation and near zero discharge of circulating water.

The invention discloses a high-uniformity oxide semiconductor deposition method and application thereof, and belongs to the technical field of semiconductor device manufacturing. The preparation method comprises the following steps: pretreating the surface of a substrate through a solution rich in hydroxyl to form a hydrophilic surface, then accurately controlling process parameters in a deposition process by utilizing a specific self-limiting reaction characteristic of an atomic layer deposition technology, and sequentially introducing an x-time I type precursor, a y-time II type precursor and a z-time III type precursor, and repeating the process for n times to obtain the high-uniformity oxide semiconductor film. According to the method, the high uniformity and the component consistency of the oxide semiconductor on the wafer level are realized, and the method is suitable for manufacturing high-performance and high-integration oxide semiconductor devices in the future.