82 results about "Superoxide radicals" patented technology

The invention discloses an aeration type water treatment device for catalytic degradation of pollutants based on triboelectrification, and belongs to the field of sewage and wastewater treatment. The lower portion is of a hollow cone structure, and the upper portion is of a cylinder structure. Positive and negative friction particles with spherical structures are placed in the device, the built-in rotatable aeration device can rotate and uniformly distribute gas under the action of gas flow, a gas-liquid-solid three-phase vortex flow is formed in combination with the rotation action of the stirring paddle, the friction particles generate high-frequency collision to generate an electrification effect, and the gas-liquid-solid three-phase vortex flow is formed. Hydroxyl free radicals (. OH) and superoxide free radicals (. O2-) are generated, and organic pollutants are efficiently degraded. The externally added magnetic field can inhibit electron-hole recombination. The device can realize innocent treatment of toxic and harmful wastewater, and has better practical and economic values.

The invention provides an efficient chloramphenicol degradation method based on Co-Cu-carbon composite nano-catalyst activated peroxymonosulfate, which comprises the following steps: regulating the Co / Cu molar ratio in a bimetal organic framework precursor, and performing pyrolysis to prepare the Co-Cu-carbon composite catalyst with an optimized pore structure, graphitization degree and metal dispersity; peroxymonosulfate is activated by utilizing the synergistic effect of Co / Co and Cu / Cu redox pairs to generate sulfate free radicals, hydroxyl free radicals, singlet oxygen and superoxide free radicals, and direct oxidative degradation of chloramphenicol is promoted by taking a catalyst as an electron transfer bridge; the method realizes rapid and efficient removal of chloramphenicol, high mineralization rate, excellent cycle stability and strong anti-interference capability, and solves the technical problems of low removal efficiency, high cost and easy secondary pollution in the prior art.

The invention relates to the technical field of mineral materials and nano-enzyme catalysis, in particular to an iron-containing layered silicate mineral nano-enzyme as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out ball milling on the iron-containing layered silicate mineral, carrying out centrifugal washing, and drying to obtain the iron-containing layered silicate mineral nano-enzyme. According to the method, silicate minerals with a layered structure and rich iron content are adopted as raw materials, the ball-milled layered silicate mineral nano-enzyme is successfully prepared through a ball milling method, the crystallinity of the minerals is reduced, the surface acidity of the minerals is improved, and low-spin iron is generated, so that the affinity of the ball-milled minerals to H2O2 is enhanced; h2O2 is catalyzed to generate singlet oxygen and superoxide free radicals, so that the peroxidase-like activity of the ball-milled minerals is improved. The enzyme-like activity is improved by 10 times, high catalytic activity can still be kept under the neutral condition, and the method can be used for colorimetric sensing and antibacterial application of small biological molecules such as glucose, hydrogen peroxide and glutathione.

The invention discloses application of copper-amino acid nano enzyme in preparation of anti-inflammatory drugs, and relates to the technical field of biomedical new materials, amino acids comprise glycine, arginine, histidine, threonine, phenylalanine and cysteine; the ratio of the amino acid to the copper ions is 1: (0.5-5), and the synthesis temperature of the copper-cysteine nano enzyme is 25-125 DEG C. The copper-amino acid nano-enzyme library established by the invention has efficient hydroxyl free radical, superoxide free radical and hydrogen peroxide scavenging activity; wherein the copper-cysteine nano-enzyme shows the highest enzymatic activity, and shows low toxicity and good biocompatibility in both the cell level and the animal level; meanwhile, the copper-cysteine nano-enzyme also shows anti-inflammatory activity and anti-oxidative stress activity, can remarkably improve cell inflammation and body inflammation, relieves and treats dextran sodium sulfate induced mouse ulcerative colitis, and can be further applied to preparation of drugs for treating inflammatory bowel diseases.

The invention relates to the field of flue gas carbon dioxide capture, in particular to a flue gas carbon dioxide capture and utilization method and system, and the system comprises: an absorption tower which is internally added with an absorbent and into which flue gas discharged by a factory is introduced, and is used for carrying out carbon dioxide capture on the flue gas; the absorbent comprises amino acid anions, cations and a transition metal complex; the amino acid anions are used for absorbing carbon dioxide and react with the superoxide free radicals to carry out chain proliferation; a cation that reacts with the product of the chain proliferation to reduce the loss of the chain proliferation; a transition metal complex reacts with the product of the chain proliferation to reduce the loss of the chain proliferation, and also reacts with the amino acid anion to enhance the solubility of the absorbent. According to the invention, efficient capture of carbon dioxide in flue gas, stable circulation of the absorbent, and resource recycling are realized.

The invention discloses an electrode material based on a non-heme iron catalyst and a preparation method and application thereof, and belongs to the field of electro-catalysis water treatment. According to the material, an electrode material is used as a substrate, an auxiliary ligand polymerization layer and a non-heme iron catalyst layer are sequentially deposited on the substrate, the auxiliary ligand polymerization layer is formed by polymerizing organic matter monomers, the non-heme iron catalyst layer is obtained by reacting ferrite and dopamine to form a precursor, and then electrochemical polymerization is performed, the auxiliary ligand polymerization layer is connected with the non-heme iron catalyst layer through a coordination bond. The auxiliary ligand polymerization layer and the non-heme iron catalyst are electrically polymerized on the electrode material, so that the selectivity of the electrode material for producing hydrogen peroxide through electro-catalysis oxygen two-electron reduction is improved, and the yield of hydrogen peroxide is increased. In addition, the non-heme iron catalyst can further generate superoxide free radicals by regulating and controlling single electron reduction of oxygen, hydrogen peroxide is promoted to generate hydroxyl free radicals, and good electro-catalysis organic pollutant removal efficiency is kept under the nearly neutral condition.

The invention relates to the technical field of resource recovery, and provides a novel method for efficiently extracting gold. The method provided by the invention comprises the following steps: mixing tridecane and a gold-containing solution, forming micro-droplets under the ultrasonic action, and extracting Au (III) in the gold-containing solution. Au (III) in water is reduced through superoxide free radicals and electrons generated on the micro-liquid drop-oil interface under the ultrasonic action to generate Au (0) precipitates, and therefore efficient extraction of Au (III) is achieved. The method provided by the invention only needs to use commercially available tridecane and ultrasound as unique energy sources, and has the remarkable advantages of simplicity and convenience in operation, low cost and no secondary pollution. Results of the embodiment show that the method provided by the invention has a good removal effect on gold-containing solutions with the concentration of 0.01-1 mM and the pH value of 1-10, and the removal rate of gold can reach 95% or above.

The invention discloses a method for catalytically degrading dye wastewater based on tetrahedrite. The method comprises the steps that tetrahedrite is subjected to mechanical activation and then mixed with peroxymonosulfate, the mixture is added into dye wastewater, the initial pH of a system is adjusted, a catalytic degradation reaction is carried out, tetrahedrite is recovered after the reaction is finished, and tetrahedrite is obtained. The mass molar ratio of tetrahedrite to peroxymonosulfate is (0.33-6): 1g / mmol; the mass ratio of tetrahedrite to organic residues in the dye wastewater is (10-80): 1. According to the method, active sites on the surface of tetrahedrite are used for adsorbing PMS molecules, PMS is activated through electron transfer to generate active free radicals, singlet oxygen in the active free radicals plays a main role, superoxide free radicals and sulfate free radicals play auxiliary roles, and therefore the catalytic activity and the degradation rate of organic matter in dye wastewater are greatly improved.

The present invention relates to a copper-nickel bimetallic doped carbonized polymer dot and a preparation method thereof. Disodium ethylenediaminetetraacetate and ethylenediamine are used as carbon sources, nickel chloride and cupric chloride are used as metal sources, and copper-nickel bimetallic coarsely doped carbonized polymer dots are obtained by microwave hydrothermal reaction. The obtained copper-nickel bimetallic coarsely doped carbonized polymer dots are subjected to centrifugation and dialysis for a period of time, and freeze-dried to obtain copper-nickel bimetallic doped carbonized polymer dot powder. The powder is redissolved in water to obtain a purified copper-nickel bimetallic doped carbonized polymer dot solution. The present invention achieves excellent free radical scavenging ability by exploring the inhibitory effect on superoxide free radicals and hydroxyl free radicals. The preparation method of the material is simple, the process is fast, and it is easy to implement.

The invention discloses a photochromic TiO2-PEG200 (Polyethylene Glycol 200) nano particle and an application of the photochromic TiO2-PEG200 nano particle in photocatalytic oxidation of a C-H bond. The catalyst is synthesized through a solvothermal method, PEG200 is used as a solvent and a modifier, and self-doped Ti < 3 + > and surface oxygen vacancies are introduced into TiO2. Under the irradiation of blue light (405nm), the catalyst generates a photochromic effect, Ti < 4 + > is reduced into high-concentration Ti < 3 + > in situ, and meanwhile, a large amount of superoxide free radicals (O < 2 + >) are generated. A photo-generated hole directly activates an ethylbenzene alpha-C-H bond to generate a benzyl free radical, and the benzyl free radical reacts with a superoxide free radical (O2.) and is finally converted into acetophenone. The catalyst has excellent visible light response and charge separation efficiency, and the acetophenone yield is up to 56 mmol.g <-1 >. H <-1 > and is 10 times that of traditional TiO2. The reversible circulation of Ti < 3 + > / Ti < 4 + > enables the catalyst to maintain good stability, and the activity is still maintained at 95% or above after five times of circulation. The operation conditions are mild (room temperature and normal pressure), a strong oxidant is not needed, an efficient, stable and environment-friendly photocatalysis solution is provided for C-H bond activation, and the method has important application value in the field of fine chemical synthesis.

This invention relates to a vehicle air conditioner, and the object of this invention is to improve the assemblability, maintenance, and repairability of a photocatalyst module by improving the intake housing structure, and to reduce air vortices generated at the air intake port side during air intake by the blower and the rumbling noise caused by these air vortices. To achieve this object, the vehicle air conditioner of this invention includes: an intake section that draws in internal and external air to blow them into the interior space of the vehicle; and a photocatalyst module that releases superoxide radicals into the air blown from the intake section into the interior space of the vehicle to purify the air, wherein the photocatalyst module is disposed on the outer surface portion of the downstream side of the blower housing of the intake section, and interference-avoidance recesses are formed on the outer surface portion of the intake housing corresponding to the periphery of the photocatalyst module disposed in the blower housing.

The invention discloses a preparation method and photocatalytic application of a metal viologen derivative framework for catalyzing C-H bond activation oxidative coupling, and belongs to the technical field of photocatalytic materials. In the preparation method, Zn < 2 + > is selected as a metal node, a viologen derivative with an excellent oxygen activation function is selected as a ligand, and a metal viologen derivative framework Zn-bcbpy is obtained through coordination by a solvent evaporation method. The viologen derivative can effectively activate molecular oxygen to generate superoxide free radicals, and then selective activation of C-H bonds is achieved through a hydrogen atom transfer mechanism. Through optimization of reaction conditions, under irradiation of blue light, the reaction yield of the Zn-bcbpy catalytic substrate is 55%, the Zn-bcbpy catalytic substrate can be stably recycled for five times, and good photocatalytic response performance of the catalyst is proved through electrochemical and impedance experiments.

The invention relates to a metal organic framework for improving charge separation efficiency based on a conjugated benzene ring, a preparation method thereof and application of the metal organic framework in degradation of methyl orange. The invention relates to a complex of MOF-2 [Zn8 (NDC) 8 (TRZ) 8] n, in which NDC is 2, 6-naphthalenedicarboxylic acid, and TRZ is 1, 2, 4-triazole, and a preparation method of the complex of MOF-2 [Zn8 (NDC) 8 (TRZ) 8] n. The extended pi conjugation in MOF-2 results in significant improvements, including reduced band gap, enhanced visible light absorption, and more excellent charge separation efficiency, as proved by comprehensive ultraviolet-visible spectroscopic analysis, electrochemical analysis, and valence band-XPS measurements. 83.8% of methyl orange degradation is realized by the MOF-2 under the irradiation of visible light within 30 minutes. According to mechanism research performed by using a free radical capture technology and electron spin resonance (ESR) spectroscopy, superoxide free radicals (. O2 <->), singlet oxygen (1O2) and hydroxyl free radicals (. OH) are determined as main active species.

The present application relates to the field of flue gas carbon dioxide capture, and particularly relates to a flue gas carbon dioxide capture and utilization method and system, which comprises: an absorption tower, inside which an absorbent is added and flue gas discharged by a factory is introduced, so as to capture carbon dioxide in the flue gas; the absorbent comprises amino acid anion, cation and transition metal complex; the amino acid anion is used to absorb carbon dioxide and reacts with superoxide free radicals to proliferate in a chain; the cation reacts with the product of the chain proliferation to reduce the loss of the chain proliferation; the transition metal complex reacts with the product of the chain proliferation to reduce the loss of the chain proliferation, and also reacts with the amino acid anion to improve the solubility of the absorbent. The present application realizes efficient capture of carbon dioxide in flue gas, stable circulation of the absorbent and recycling of resources.

The application discloses a kind of self-assembly nanomaterial and its application in ROS clearance.The self-assembly nanomaterial of the application is denoted as TPP-FFYp-O, and its structural formula is shown as follows:TPP-FFYp-O of the application is specifically cut to generate TPP-FFY-O by alkaline phosphatase (ALP) overexpressed after entering inflammatory cell, TPP-FFY-O is enriched near mitochondrion by the targeting effect of TPP, and is self-assembled to form nanoparticle and stays in inflammatory cell by π-π stacking.Nanoparticle surface enrichment of a large number of TEMPO can convert superoxide radical anion (O2 ·‑ ) in mitochondrion into hydrogen peroxide (H2O2), and then decompose into oxygen and water, thereby significantly reducing the ROS level in inflammatory cell.This enzyme-controlled self-assembly nanoparticle improves the stability of TEMPO and the ability of ROS clearance, and has good application prospect.

The application relates to a method for inactivating viruses in sewage. The method comprises the following steps: introducing heterotrophic bacteria into sewage to be inactivated; increasing the carbon-nitrogen ratio of the sewage during the activation and expansion of the heterotrophic bacteria; washing and resuspending the activated and expanded heterotrophic bacteria to form a heterotrophic bacteria liquid to be used; inoculating the heterotrophic bacteria liquid into the sewage and reducing the carbon-nitrogen ratio of the sewage, so that the heterotrophic bacteria produce an oxidative stress response to inactivate viruses. The method adjusts the carbon-nitrogen ratio to make the heterotrophic bacteria change from an eutrophic environment to an oligotrophic environment, activates the oxidative stress pathway of the heterotrophic bacteria, increases the generation of oxidative active species such as superoxide free radicals, causes oxidative damage to the virus shell or envelope, and thus promotes the inactivation of viruses. The method is simple and efficient, and has a wide application scenario.

An alcohol-free method of extracting β-glucans such as lentinan from mushrooms is described. The method excludes the drying and pulverising of the mushrooms prior to extraction. The simultaneous use of enzymatic digestion and ultrasonication provides extracts with high levels of desired properties including 1,1-diphenyl-2-picryl hydrazyl radial scavenging activity, superoxide radical scavenging activity, iron chelating capacity, and ferric-reducing antioxidant power.

The present application discloses a photoelectrocatalytic reactor, a reaction system for continuously and deeply treating wastewater and an application thereof, which includes an anode current collector tank, a photoanode unit, an insulating unit, a cathode and a cathode current collector. A light-transmitting window is provided at the bottom of the anode current collector tank, and a water inlet is provided at the bottom of the anode current collector; a water outlet is provided on the cathode current collector. The insulating unit is embedded in the anode current collector tank, and the cathode current collector is embedded in the insulating unit. A liquid flow channel is formed between the anode current collector tank, the insulating unit and the cathode current collector. Through the design of the embedded structure, it is easy to assemble and can avoid wastewater leakage at the same time; the light-transmitting window is arranged below the reactor. While the light source is fully close to the photoanode unit, it is ensured that the photoanode unit is fully immersed in the reaction solution. The oxygen generated by the photoanode unit during the wastewater treatment process can realize redox through the cathode to generate superoxide radicals, improving the treatment ability of fluorinated aromatic wastewater.

This invention relates to the field of microfluidic sensing and detection technology, and more particularly to a photoelectric / fluorescence dual-mode self-calibrating microfluidic sensor for the detection of various mycotoxins, its fabrication method, and its application. The microfluidic sensor comprises a three-channel microfluidic chip and a substrate. In its fabrication, the three independent working electrodes and an integrated reference-counter electrode system are integrated into the microfluidic chip, utilizing oxygen-rich vacancy Io. 0.2~0.4 S 0.3~0.5 Using BiOBr (ISBO-OVs)@Au composite material as the sensing substrate, an internal secondary light source is formed by the chemiluminescence reaction of luminol-superoxide radicals, which can cascade and amplify the photocurrent signal. At the same time, combined with the specific recognition function of 7DCCA labeled aptamers, the sensitivity and specificity of microfluidic sensors for detecting trace fungal toxins are greatly improved.

The present application relates to the field of biological detection, and discloses a chemiluminescence nano probe and a preparation method and application thereof. The present application utilizes oxalate-based chemiluminescence energy donor and red organic dye as light-emitting energy acceptor; utilizes hydrophilic polymer as matrix raw material, and prepares the chemiluminescence nano probe through water-in-oil-in-water multiple emulsification. The obtained chemiluminescence nano probe has a chemiluminescence half-life of up to 1000 seconds, a detection limit of 0.27 micromole for superoxide free radicals, can not be interfered by other ions, and shows strong and stable chemiluminescence performance, and can be used for monitoring diseases related to superoxide free radicals.

The invention discloses a lime composite agent for phosphogypsum innocent treatment based on an inorganic formula, a preparation method and application, and belongs to the technical field of resource utilization, the developed'alkali neutralization-photosensitive catalysis-excitation emulsion 'composite agent breaks through the technical defects of a traditional lime agent, lime powder and multiple components are compounded, and the comprehensive utilization rate of the lime powder is improved. The calcium-based composite alkali material with high alkalinity is prepared, the emulsification degree of lime powder is improved, and the activity degree of lime milk is enhanced. Compared with a traditional ardealite neutralization treatment process, the method has the advantages that the ultraviolet illumination step is added, soluble fluorine and phosphorus ions can be physically adsorbed, photo-generated holes can be physically adsorbed, generated superoxide free radicals can destroy molecular structures of organic matters in ardealite, decomposition of the organic matters is promoted, meanwhile, the component A of the exciting agent is optimized, and the utilization rate of the exciting agent is increased. And the modified polyacrylamide microspheres are added as a complexing agent, so that the modified polyacrylamide microspheres are promoted to be complexed with the carrier adsorbent under ultraviolet radiation, and the curing effect is improved.

The invention discloses a primary battery base material capable of directionally generating free radicals, a material and a preparation method, and solves the problems that the free radicals generated by a water treatment material are single in type and uncontrollable, and the pertinence on the characteristics of organic pollutants and the degradation of the free radicals and organic matter functional structures is not strong. According to the primary battery base material capable of directionally generating the free radicals, the concentration of the generated free radicals is greatly improved, and the wastewater treatment efficiency is improved; according to the primary battery material capable of directionally generating the free radicals, the primary battery base material capable of directionally generating the free radicals and one of copper, manganese and lanthanum are used as components to synthesize the primary battery material capable of efficiently and directionally generating the free radicals, and the iron-carbon-copper nanometer material can improve generation of superoxide free radicals; the iron-carbon-manganese nano material can improve generation of hydroxyl free radicals, the iron-carbon-lanthanum material can accelerate the generation rate of the free radicals, regulation and control of the generation types of the free radicals are achieved by compounding different metal materials, and the free radicals can also be generated under neutral and alkaline conditions.

The invention provides a preparation method of a barium titanate / ethynyl conjugated polymer composite material, a product prepared by the preparation method and application of the product. According to the method, a simple solvothermal reaction is adopted, barium titanate is loaded on an ethynyl conjugated polymer, and therefore the heterojunction composite material with efficient photocatalysis and piezoelectric activity is formed. The material can efficiently generate hydroxyl free radicals (. OH) and superoxide free radicals (. O2-) in situ under piezoelectric-photocatalysis to quickly react with refractory organic pollutants, so that efficient removal of the organic pollutants is realized. The barium titanate / ethynyl conjugated polymer composite material provided by the invention can be recycled after being used for degrading persistent organic pollutants, and is more energy-saving and environment-friendly.

The invention provides an indolyl porous Fenton reagent as well as a preparation method and application thereof in Fenton reaction, and belongs to the technical field of catalytic reaction. The indolyl porous Fenton reagent Fe3O4 / PIN prepared by the invention has electron donating characteristics and electron conduction characteristics, the reduction conversion rate from Fe (III) to Fe (II) is obviously accelerated, and cyclic regeneration of Fe (III) / Fe (II) is effectively promoted. In the aspect of pollutant treatment, the indole-based porous polymer can attract pollutants to the periphery of a network skeleton of the porous polymer by virtue of interaction force between the indole-based porous polymer and the pollutants, then Fe3O4 reacts with hydrogen peroxide to generate hydroxyl free radicals and superoxide free radicals, and the hydroxyl free radicals and the superoxide free radicals jointly oxidize, degrade and adsorb the pollutants. The invention not only opens up a new direction for the application of the Fenton reaction in the field of water purification, but also makes an important contribution to efficient removal of environmental pollutants.

The invention relates to a carbon nanotube embedded artificial cell, a preparation method thereof and an application of the carbon nanotube embedded artificial cell in degradation of antibiotic resistance genes, and belongs to the technical field of environmental functional materials. According to the material, an artificial cell membrane formed by lipidosome serves as a shell, layered double-oxide hollow spheres derived from ferrocobalt layered double hydroxides are packaged in the shell, and carbon nanotubes are embedded into the artificial cell membrane to serve as a transmission channel. The preparation method comprises the following steps: preparing carbon spheres by a hydrothermal method, preparing ferrocobalt layered double hydroxides by a coprecipitation method, carrying out composite calcination to obtain layered double oxide hollow spheres, and finally constructing artificial cells by a film hydration method and embedding the artificial cells into the carbon nanotubes. The material can be used for catalytically degrading antibiotic resistance genes in water, singlet oxygen and superoxide free radicals are generated through peroxymonosulfate activation, gene segments are effectively attacked, and efficient degradation is achieved. The method has the advantages of efficient catalytic activity and confinement encapsulation, magnetic recovery is facilitated, and a novel environment-friendly method is provided for treatment of antibiotic resistance genes.

The invention relates to a method for inactivating viruses in sewage. The method comprises the following steps: introducing heterotrophic bacteria into sewage to be inactivated; the carbon-nitrogen ratio of the sewage is increased in the process of activating and expanding the heterotrophic bacteria; washing and resuspending the activated and propagated heterotrophic bacteria to form a standby heterotrophic bacteria solution; the heterotrophic bacteria liquid is inoculated into the sewage, and the carbon nitrogen ratio of the sewage is reduced, so that the heterotrophic bacteria generate oxidative stress reaction to inactivate viruses. According to the method, the carbon nitrogen ratio is regulated and controlled, so that the heterotrophic bacteria are converted from a eutrophication environment to a hypotrophic environment, an oxidative stress pathway of the heterotrophic bacteria is activated, generation of oxidative active species such as superoxide radicals is increased, oxidative damage to virus shells or envelopes is caused, and virus inactivation is promoted. The method is simple and efficient, and has a wide application scene.

The invention discloses a preparation method and application of a semen allii tuberosi active extract, and belongs to the technical field of deep processing of medicinal and edible plants. According to the method, only water and edible ethanol are used as solvents in the whole process, independent deproteinization and decolorization steps in which toxic organic solvents participate are not included, and the target extract is prepared through water extraction, concentration, alcohol precipitation, resin purification and drying under the synergistic effect of 65%-75% alcohol precipitation and 40% edible ethanol single-stage elution. The mass fraction of polysaccharide in the prepared extract reaches 25%-30%, the SORAC index of the superoxide free radical scavenging capacity is 5500.00-6000.00 [mu] mol SE / g, and the extract has high oxidation resistance and the activity of assisting in reducing blood sugar in the early stage of diabetes. The method is simple in process, easy to scale, safe and free of toxic solvent residues, the product can be directly used for food and health food, and a stable and feasible technical scheme is provided for high-valued application of the semen allii tuberosi.

The present application relates to a kind of based on Co3O4-ZIF@CNT catalytic membrane-UV irradiation efficient removal antibiotic and resistance gene method, the treatment method of the present application is based on catalytic oxidation filter membrane-UV irradiation integration device carries out, catalytic oxidation filter membrane-UV irradiation integration device in the filter membrane-UV reaction component realizes the organic combination of Co3O4-ZIF@CNT catalytic membrane and ultraviolet irradiation, after wastewater is filtered, it is followed by ultraviolet irradiation, enough hydroxyl radical, singlet oxygen, superoxide radical, sulfate radical and other active oxygen components are generated, the efficient removal of antibiotic and resistance gene and other new pollutants is realized.The production and species of active oxygen species such as sulfate radical, singlet oxygen in the system are significantly improved, and high-efficiency water treatment effect is achieved under the condition of low oxidant dosage, low UV irradiation dose.

The application discloses a preparation method of Bi-containing nylon 6 antibacterial black fiber, and comprises the following steps: adding bismuth nitrate pentahydrate and ammonium metavanadate into a solvent, stirring to obtain a bismuth vanadate precursor solution; mixing the bismuth vanadate precursor solution, nylon 6 chip powder and nylon 6 chips, melt plasticizing, drawing, water tank cooling, cutting, vibration screening and vacuum constant temperature drying to obtain nylon 6 bismuth vanadate master batch; adding spinning grade nylon 6 chips into a main feeding position, adding carbon black powder and an additive into a side feeding position, melt plasticizing, drawing, water tank cooling, cutting, vibration screening and vacuum constant temperature drying to obtain nylon 6 black master batch; mixing the nylon 6 bismuth vanadate master batch, the nylon 6 black master batch and nylon 6 chips, and extruding to obtain the Bi-containing nylon 6 antibacterial black fiber; the application can generate hydroxyl radicals and superoxide radicals under photocatalysis to kill and inhibit the growth and reproduction of bacteria, and the application does not contain heavy metals, and has the characteristics of low cost, non-toxicity, simple operation and good antibacterial performance.

The invention belongs to the technical field of photocatalysis and functional coordination chemistry, and particularly relates to a metal organic cage catalyst based on ligand engineering regulation and a method for photocatalytic synthesis of hydrogen peroxide in pure water. According to the invention, a tripyridine ligand containing pyridinium substituent groups is designed through a ligand engineering strategy, and the tripyridine ligand and zinc ions are self-assembled to form the metal organic cage catalyst with a tetrahedral structure. By introducing a pyridinium group into a ligand structure, the electron attraction capability of a system is enhanced, and an efficient charge transfer channel is formed. Active intermediates (such as hydroxyl free radicals and superoxide free radicals) are effectively stabilized by the confinement space of the cage body, and the decomposition reaction of hydrogen peroxide is inhibited. The structure can efficiently separate photo-induced electrons and holes under the illumination condition and promote the double-two-electron synergistic process of oxygen reduction reaction and water oxidation reaction, so that hydrogen peroxide is efficiently generated in a pure water system without a sacrificial agent.