2649 results about "Activated oxygen" patented technology

The invention provides a Ustilaginoidea virens gene UvASE2 for regulating and controlling rice resistance and application of the Ustilaginoidea virens gene UvASE2, and relates to the technical field of plant genetic engineering. The nucleotide sequence of the Ustilaginoidea virens gene UvASE2 is as shown in SEQ ID NO: 1, and the amino acid sequence of the encoding protein of the Ustilaginoidea virens gene UvASE2 is as shown in SEQ ID NO: 2. By constructing a transgenic rice plant for heterologous expression of UvASE2, it is found that the transgenic rice can significantly improve the resistance to false smut and bacterial blight and significantly induce the outbreak of active oxygen. The heterologous expression UvASE2 gene of Ustilaginoidea virens has the function of positively regulating and controlling the disease resistance of rice, and the UvASE2 gene can be used for improving the disease resistance of rice and has important significance on creation of disease-resistant germplasm of rice.

The invention discloses injectable hydrogel with redox activity and electroactivity as well as a preparation method and application of the injectable hydrogel, and belongs to the technical field of medical materials. The preparation method comprises the following steps: reacting methacrylic anhydride and polysaccharide molecules in a solvent to prepare a double-bond functional polymer; the preparation method comprises the following steps: firstly, pre-polymerizing dopamine in a solvent, and then adding MOF (Metal Organic Framework) to carry out polymerization reaction, so as to prepare dopamine modified MOF; reacting the dopamine modified MOF, EDOT and ferric salt in a solvent, and collecting the precipitate to prepare a nano filler; the preparation method comprises the following steps: jointly dispersing the double-bond functional polymer, active polypeptide, a photoinitiator and nano filler into a solvent, and carrying out photocuring cross-linking. The preparation condition is mild, gel forming is rapid, the method is simple, the prepared hydrogel has injectable performance and conductive performance, catalytic activity of natural enzyme can be simulated, active oxygen removal can be achieved in the early stage of myocardial ischemia, electrical conduction of infarction parts can be enhanced, and effective recovery of cardiac functions can be achieved.

The invention provides a method for detecting silicon single crystal COP free area distribution, and relates to the technical field of silicon single crystal quality detection.The method comprises the steps that a silicon wafer to be detected is cleaned to obtain a first silicon wafer; uniformly smearing a transition metal ion solution on the surface of the first silicon wafer to obtain a second silicon wafer; placing the second silicon wafer in a high-temperature environment, and performing heat treatment under three temperature gradients to obtain a third silicon wafer; wherein in the first stage, transition metal ions are diffused to the surface layer of the silicon wafer to activate oxygen precipitates in a Pv region, in the second stage, the transition metal ions are promoted to be diffused into the silicon wafer to develop a Pi low-oxygen region, and in the third stage, nuclei coalescence in a B-band region is activated at high temperature to form a differential arrangement ring; cleaning the third silicon wafer through a mixed acid solution to obtain a fourth silicon wafer; and placing the fourth silicon wafer in a preferential corrosion liquid for preferential corrosion, and carrying out COP free area distribution detection on the obtained detection sample wafer. According to the scheme, the definition of each region boundary can be improved, so that the detection accuracy of COP free region distribution is improved.

The invention provides an electrochemical active oxygen supply device for a washing machine and a preparation method. The device comprises a shell, a single closed reaction chamber is formed in the shell, a bifunctional anode electrode and a bifunctional cathode electrode are integrated in the reaction chamber, and a compact and uniform reaction area is formed between the anode electrode and the cathode electrode. When water flows through the reaction area, hydrogen peroxide (H2O2) and / or hydroxyl radicals (OH) are / is electrochemically generated on the surface in situ by accurately adjusting the electrode potential of the difunctional anode, so that instant generation and instant utilization of active oxygen are realized. The active oxygen directly enters a washing system of the washing machine along with water flow, bacteria, viruses and fungi can be efficiently inactivated under the normal-temperature or low-temperature washing condition without additionally adding chemical disinfectants, organic stains and peculiar smell molecules are synchronously degraded, and green, efficient and intelligent healthy washing is achieved.

The invention relates to the technical field of biomedical materials, in particular to a titanium implant multifunctional composite coating with anti-active oxygen and anti-inflammatory dual performance and a preparation method of the titanium implant multifunctional composite coating. The coating is composed of a lanthanum oxide (La2O3) nano-particle layer growing on the surface of the titanium implant in situ and queen lily glycoside A (RA) loaded on the lanthanum oxide (La2O3) nano-particle layer and can continuously release La < 3 + > and RA. The preparation method comprises the following steps: performing alkali heat treatment on the titanium substrate; a La (OH) 3 coating is synthesized on the surface in situ through a hydrothermal reaction; the La2O3 nano-particles are calcined and converted into a La2O3 nano-particle layer with a porous structure; and finally loading RA through an impregnation method. The coating can effectively remove ROS, regulate immune inflammatory response, promote osteogenic differentiation and inhibit osteoclast activity, thereby remarkably promoting osseointegration. The problem of osseointegration under the osteoporosis pathological microenvironment is effectively solved, the preparation process is simple and controllable, and the composition is suitable for bone defect repair of osteoporosis patients and has important clinical application value.

The invention discloses an active oxygen scavenging drug-loaded targeted nano delivery platform based on diselenide bond bridging as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. According to the invention, tetra (4-carboxyphenyl) porphyrin (TCPP) and manganese porphyrin (Mn-TCPP) are used as raw materials to synthesize an organic metal framework MOFs, a target drug is loaded on the MOFs through electrostatic adsorption / blending, and amino and diselenide bonds are linked on the MOFs to realize combination with a specific peptide ligand and promote release of a drug oxidative stress microenvironment. The nano delivery platform with specific targeting and ROS response performance is obtained. The specific treatment effect of different diseases is achieved through different selections of the loaded drugs and the specific peptide ligands.

The invention provides an intermittent ultrasonic enhanced micro-nano bubble fruit and vegetable cleaning and disinfecting method, which comprises the following steps: introducing an active oxygen solution and gas into a micro-nano bubble generator, and placing a water inlet and a water outlet of the micro-nano bubble generator in the same cleaning pool; placing fruits and vegetables to be treated in the cleaning pool, starting the micro-nano bubble generator, and applying intermittent periodic ultrasonic treatment to the cleaning pool by using an ultrasonic device so as to clean and disinfect the fruits and vegetables to be treated. According to the method, micro-nano bubbles, ultrasound and active oxygen are combined, the method can be efficiently used for sterilizing the surfaces of fruits and vegetables, and the sterilizing effect on natural flora on the surfaces of the fruits and vegetables can reach 99.99%. Meanwhile, the combination of the three can also significantly inhibit browning of the fruits and vegetables, and has no negative influence on the quality (such as hardness and chromaticity) and nutritional ingredients of the fruits and vegetables.

The invention relates to an active oxygen responsive triptolide prodrug immunoregulation hydrogel preparation as well as a preparation method and application thereof. Triptolide is coupled with an active oxygen responsive group to synthesize a triptolide derivative; then, the triptolide derivative is coupled with polypeptide, and a polypeptide-reactive oxygen responsive group-triptolide conjugate is obtained; then dissolving the polypeptide-active oxygen responsive group-triptolide conjugate in a solvent, standing, and carrying out self-assembly to obtain a triptolide prodrug nanofiber solution; finally, an immunomodulator is added into the triptolide prodrug nanofiber solution for incubation, and the active oxygen responsive triptolide prodrug immunoregulation hydrogel preparation is obtained. The hydrogel preparation disclosed by the invention can responsively release the medicine triptolide and the immunomodulator at the focus part of rheumatoid arthritis, so that the medicine accumulation of non-target organs is reduced, the safety and effectiveness of treatment are improved, and the progress of diseases is effectively controlled.

The preparation method comprises the following steps: synthesizing gold nanostars (GNS) by using a seed growth method, coating mesoporous cerium dioxide (mCeO2) by using a template method, and loading a photosensitizer indocyanine green (ICG), so as to form a nano enzyme diagnosis and treatment system with chemical activity, photoactivity and photothermal effects. In the system, the gold nanostars have a good photo-thermal effect due to the multi-branched structure of the gold nanostars; on one hand, the mesoporous cerium dioxide coated on the outer layer has a chemical effect due to the nano-enzyme effect, and on the other hand, the mesoporous structure of the mesoporous cerium dioxide can better load the photosensitizer indocyanine green. All the components have good stability and biological safety, also have peroxidase simulation activity and a drug loading function, can improve the level of reactive oxygen species (ROS) in a tumor microenvironment and load photosensitizer drugs, and have an excellent anti-tumor effect and small side effects.

The invention discloses a dual-mechanism antibacterial photosensitizer as well as a preparation method and application thereof, and relates to the technical field of biomedical photoelectric functional materials. The invention relates to a triphenylamine derivative, which can realize fluorescence imaging of bacterial or fungal infection by utilizing fluorescence characteristics, can generate active oxygen under illumination to play a photodynamic therapy role, is suitable for preparing photodynamic therapy preparations and developing antibacterial materials, and can also be applied to the fields of environment and public health and tumor treatment. The problems that an existing photosensitizer is insufficient in broad spectrum, different in fungus drug resistance mechanism, limited in single treatment effect and the like can be effectively solved, and the photosensitizer has wide application prospects.

The invention discloses a multi-factor coupling ganoderma lucidum environment digital twinborn regulation and control method oriented to high-yield requirements, particularly relates to the technical field of intelligent cultivation of edible mushrooms, and is used for solving the problems of equipment action oscillation and recessive physiological stress caused by physiological response hysteresis of ganoderma lucidum in an existing environment regulation and control system. Carbon dioxide concentration and illumination intensity predicted values are generated in real time by constructing ganoderma lucidum growth digital twins, and an oxidative stress mark is activated by combining hypha respiratory entropy matching degree analysis and an active oxygen accumulation curve; when the matching degree exceeds a threshold value and oxidative stress exists, a metabolic overload signal is generated, and whether the carbon dioxide predicted value is in a physiological hysteresis interval or not is judged; delay compensation and metabolic overload suppression coefficient adjustment are performed on the carbon dioxide predicted value in the delay interval; and finally, inputting the compensated carbon dioxide value and the illumination prediction value into an environment factor coordination rule base, generating a ventilation opening degree and light supplementing power instruction to drive execution equipment, and ensuring the morphological development stability of the sporocarp and the synthesis efficiency of the active component.

The invention relates to the technical field of environmental pollution control, in particular to application of grass acidified zero-valent iron in in-situ remediation of organic polluted underground water. According to the preparation method, oxalic acid and micron zero-valent iron are evenly mixed and then subjected to ball milling treatment, oxalic acid zero-valent iron of a core-shell structure is obtained through post-treatment, the oxalic acid zero-valent iron has high electron transfer efficiency, Fe < 2 + > / Fe < 3 + > circulation is further regulated and controlled through oxalic acid coordination in the oxalic acid zero-valent iron, interface electron transfer is enhanced, and the preparation method is suitable for industrial production. Peroxyacetic acid is promoted to be activated to generate various active oxygen species, and efficient degradation of organic pollutants is achieved. The invention solves the problems of low zero-valent iron electron transfer efficiency, single active oxygen species, secondary pollution of iron sludge and the like in the process of degrading organic pollutants by using the existing zero-valent iron advanced oxidation technology.

The invention discloses a brain-targeted active oxygen responsive hydrogen sulfide donor liposome, a preparation method and an application, and belongs to the technical field of pharmaceutical preparations, the structure of the brain-targeted active oxygen responsive hydrogen sulfide donor liposome comprises a lipid material and a hydrogen sulfide donor encapsulated in the lipid material, the lipid material comprises phospholipid, cholesterol, active oxygen sensitive lipid and brain-targeted lipid, and the lipid material comprises phospholipid, cholesterol, active oxygen sensitive lipid and brain-targeted lipid. The active oxygen sensitive lipid comprises a phospholipid lipophilic part, a polyethylene glycol hydrophilic part and an active oxygen sensitive bond, and the brain-targeted lipid comprises a phospholipid lipophilic part, a polyethylene glycol hydrophilic part and brain-targeted peptide. The hydrogen sulfide donor lipidosome can penetrate through a blood brain barrier, target neuronal cells, respond to an active oxygen environment of a focus part and sensitively release a hydrogen sulfide donor, so that hydrogen sulfide is distributed in the focus neuronal cells, active oxygen and active nitrogen substances are effectively removed, oxidation and nitration stress are inhibited, and damage and death of the neuronal cells are reduced; the growth and functional recovery of neuronal cells are promoted, and the application prospect in the aspect of treating central nervous system injury diseases is good.

The utility model provides a honeycomb nanofiber-based flexible probe medical dressing, the shape of the medical dressing is a honeycomb formed by closely arranging hexagonal structure units, six edges of each hexagonal structure unit are detection parts, the middle surrounded part is a treatment part, and the detection parts are closely attached to the treatment part; the detection part is used for detecting the high active oxygen concentration of the wound and judging whether the wound is infected or not; the treatment part is used for treatment and infection resistance of wounds after skin tumor excision. The medical dressing is used for wound treatment and infection resistance after skin tumor excision, and meanwhile, the high active oxygen concentration of a wound is detected, and whether the wound is infected or not is judged.

The invention provides dual-response antibacterial repair-promoting injectable hydrogel as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. Two-dimensional titanium carbide (TiO2 (at) MXene) with the surface modified with titanium dioxide and a bioactive substance are introduced into a hydrogel matrix to serve as functional additives, TiO2 (at) MXene is a photo-thermal and ultrasonic response material, can emit heat under 808 nm near-infrared (NIR) light irradiation and low-intensity pulsed ultrasound (LIPUS) stimulation, and can generate reactive oxygen species (ROS) for sterilization under LIPUS stimulation; when the temperature of the hydrogel is increased, the bioactive substances can be slowly released from the hydrogel, and cell proliferation and tissue repair are promoted. The hydrogel provided by the invention can be coated on the surface of skin or injected under soft tissue, so that the functions of resisting bacteria in the early stage of inflammation and promoting tissue repair in the later stage are realized.

A carbon dioxide recovery system includes an electrochemical cell that includes a working electrode, a counter electrode, an insulating layer, and an electrolyte layer. The electrochemical cell is configured to repeat an adsorption mode and a desorption mode. In the adsorption mode, in a state where oxygen is supplied together with a gas to be treated that contains carbon dioxide to a portion of the electrolyte layer in a vicinity of the working electrode, a voltage is applied between the working electrode and the counter electrode to supply electrons to the working electrode so that the oxygen receives electrons to generate active oxygen, and the active oxygen combines with the carbon dioxide to absorb the carbon dioxide and generate a carbon dioxide adsorbed molecule.

The invention relates to ultra-small prussian blue nano-particles (T-USPB-C) carrying tirofian, a preparation method of the nano-particles and application of the nano-particles in preparation of drugs for reducing MVO and MIRI. According to the preparation method, the T-USPB-C is prepared by three steps. The T-USPB-C provided by the invention can carry tirofiban, and has catalase and superoxide dismutase simulated nano-enzyme activity. Moreover, the size of the nano-scale drug is required to reach a nano-scale size, and the drug can be efficiently cleared through kidney excretion, so that the potential long-term toxicity problem is minimized. The ultra-small prussian blue nanoparticle carrying the tirofian has an excellent active oxygen scavenging capability. Microvascular perfusion can be rapidly improved through the antithrombotic effect, then the protection effect is continuously achieved through the anti-oxidation and anti-inflammatory mechanism, and microvascular injury and MIRI are effectively prevented.

The invention belongs to the technical field of medicines, and discloses a near-infrared cyanine probe for detecting penicillin G acylase as well as a preparation method and application of the near-infrared cyanine probe. According to the research, a near-infrared fluorescent probe Cy-NEO-PA responding to penicillin G acylase (PGA) is developed, so that the influence of environmental factors on the formation of an acinetobacter baumannii biological membrane is observed. Research results show that glucose inhibits the generation of PGA to enhance the formation of a biological membrane, while phenylacetic acid (PAA) stimulates the generation of PGA and inhibits the formation of the biological membrane. The observation results highlight the excellent capability of Cy-NEO-PA in accurately measuring PGA kinetics, and reveal the key effect of PGA in biological membrane development. In addition, the Cy-NEO-PA has good biocompatibility, strong active oxygen generation, efficient photo-thermal conversion and bacterial targeting ability, so that the Cy-NEO-PA becomes a promising drug for resisting bacterial infection and promoting wound healing through photo-thermal / photodynamic therapy.

The invention discloses a cold response PaIBH1 protein and application of a coding gene thereof in enhancing cold stress resistance of plants. The cold response PaIBH1 protein is a protein PaIBH1 with an amino acid sequence as shown in SEQ ID NO: 2. Experiments prove that the gene for coding the protein PaIBH1, namely the gene PaIBH1, is overexpressed in wild type arabidopsis thaliana, so that the cold resistance of the arabidopsis thaliana can be improved; the improvement of the cold resistance shows that after cold treatment, the fresh weight of the overground part is increased, the wilting rate is reduced, the leaf membrane damage and electrolyte leakage are reduced, the photosynthetic ability is improved, the membrane lipid peroxidation damage is relieved, the active oxygen scavenging ability is enhanced and / or the active oxygen accumulation in the plant body is reduced. Therefore, the protein PaIBH1 can improve the cold resistance of the plants. The method has a very wide application prospect in the aspect of cold-resistant genetic improvement of crops or pasture.

The invention relates to the field of polyester fiber materials, and particularly discloses an antibacterial polyester fiber and a preparation method thereof.The method comprises the following steps that S1, PET fibers are coated with an isolation transition layer, S1-1, the PET fibers are cleaned and then mixed with a silane coupling agent for a reaction, and pretreated fibers are obtained; s1-2, mixing the pretreated fiber with a monomer mixture, a fluorine-containing monomer, styrene and a cross-linking agent, adding an initiator, and carrying out a heating reaction to obtain a fiber intermediate product; and S2, coating the fiber intermediate product with an antibacterial enhancement layer to obtain the antibacterial polyester fiber. The antibacterial reinforcing agent in the antibacterial reinforcing layer can generate active oxygen under illumination to provide antibacterial performance, the antibacterial performance has a long-term effect, and meanwhile, the antibacterial reinforcing agent can enhance the bonding strength, the abrasive resistance and the mechanical property of the antibacterial reinforcing layer.

The invention discloses preparation and application of a manganese hydroxylate modified zirconium-based metal organic framework, and belongs to the technical field of wastewater treatment. According to the preparation method, firstly, Mn oxide serves as a dopant, naphthalic acid serves as a frame connector, a zirconium-manganese bimetal organic frame is prepared through a hydrothermal method, and hydroxylation treatment is conducted through an alkali solution; mn replaces Zr atoms on a zirconium cluster to form high charge density with Zr, Mn and Zr can jointly participate in an electron transfer process and an active oxygen generation process to form double active centers, and the catalytic activity of a Fenton-like system is enhanced, so that the oxidative adsorption removal rate of As is remarkably improved. Experimental results show that the As removal rate can still reach 95.1% after five cycles, the targets of oxidative adsorption of As and reutilization are achieved, and the application of the zirconium-based metal organic framework in the field of catalytic adsorption of As is expanded.

The invention belongs to the technical field of microorganisms and fermentation engineering, and particularly relates to application of bifidobacterium longum subsp. Infantis Y46 in the aspects of enhancing cell defense and repair and regulating metabolic homeostasis of a host. The strain is isolated from infant feces. Animal experiments prove that living cell thalli of the bifidobacterium longum subsp. Infantis Y46, which are obtained by culturing an MRS liquid culture medium added with L-cysteine hydrochloride (0.05%, v / v), can significantly enhance the oxidative stress resistance of an organism and reduce the level of active oxygen in the organism compared with a control bacterium bifidobacterium longum subsp. Infantis 15697. Transcriptomics analysis shows that the bifidobacterium longum subsp. Infantis Y46 can enhance self-protection of cells and improve physiological imbalance caused by external pressure by regulating related signal channels of an organism. The action mechanism is closely related to signaling pathways related to cell defense, metabolic homeostasis and barrier functions. The invention provides a new strain resource and an application scheme for developing functional food or medicinal preparations for enhancing the health defense function of a human body.

The invention provides a preparation method of an iron and nitrogen co-doped biomass-based carbon material, which can be applied to the technical fields of environmental functional materials and advanced oxidation. The preparation method comprises the following steps: obtaining target charcoal precursor powder; mixing the charcoal precursor powder with soluble ferric salt and urea to form initial mixed powder, adding water into the initial powder, and drying after water bath to obtain mixed powder; and heating and calcining the mixed powder according to preset process parameters to obtain the iron and nitrogen co-doped biomass-based carbon material. The prepared iron and nitrogen co-doped biomass-based carbon material FeOx has a high specific surface area and a rich pore structure, FeOx is uniformly dispersed on a nitrogen-doped carbon substrate, ozone catalytic activity and electron conduction performance are improved, and reactive oxygen species (ROS) can be efficiently generated to degrade sulfamethoxazole.

The invention provides an aza-BODIPY molecule with NIR-II fluorescence emission and I-type photodynamic activity and a preparation method thereof. The aza-BODIPY molecule has good light absorption in a near-infrared (NIR) region, the emission peak of the aza-BODIPY molecule is prolonged to a near-infrared second region (NIR-II), and the aza-BODIPY molecule shows an ultrahigh NIR-II fluorescence quantum yield of 13%. Meanwhile, the photosensitizer prepared by adopting aza-BODIPY molecules can effectively generate I-type active oxygen species, namely superoxide anion free radicals, under the excitation of 808nm laser. On the basis, high-resolution tumor fluorescence imaging can be realized by utilizing NIR-II fluorescence of the aza-fluorine boron fluorescent sensitizer, and the aza-fluorine boron fluorescent sensitizer is used for accurate and efficient NIR-II fluorescence imaging mediated I-type photodynamic therapy of deep tumor tissues.

The invention belongs to the technical field of catalytic materials, and particularly relates to high-entropy alloy nanoparticles used as a biocatalyst and application of the high-entropy alloy nanoparticles. The PtFeCuCoNi high-entropy alloy nano-particles with pH adaptability are developed through a one-step solvothermal synthesis method, it is found that the PtFeCuCoNi high-entropy alloy nano-particles can serve as potent oxidase, can generate reactive oxygen species (ROS) and effectively kill bacteria such as MRSA under the acidic condition, and can play the functions of superoxide dismutase and catalase under the neutral condition, so that the PtFeCuCoNi high-entropy alloy nano-particles with the pH adaptability can be used for effectively killing bacteria such as MRSA. Active oxygen in cells is efficiently removed, oxidative stress is relieved, and the cell protection effect is achieved.

The invention discloses an oral monoclonal antibody micro-coated nanopolysaccharide microsphere preparation for targeted therapy of inflammatory bowel diseases and a preparation method thereof. According to the method, oxidized mannan and an anti-TNF-alpha monoclonal antibody are mixed and cross-linked by a cross-linking agent containing a diselenide bond to form the drug-loaded nanoparticles. Mixing the drug-loaded nanoparticles with pectin, dropwise adding the mixture into a calcium chloride solution through an electrostatic spinning device, and carrying out ionic crosslinking to obtain the oral monoclonal antibody micro-coated nano polysaccharide microsphere preparation with the particle size range of 180-200 microns. The drug-loaded polysaccharide microsphere delivers the wrapped drug-loaded nanoparticles to a colitis disease part through electrostatic interaction. The drug-loaded nanoparticles are targeted to macrophages, release of the monoclonal antibody is accelerated under the triggering of high-concentration active oxygen at an inflammation part, and the oral stability and the treatment effect of the monoclonal antibody drug are improved. The polysaccharide is used as a monoclonal antibody targeted delivery carrier, raw materials are cheap and easy to obtain, the preparation process is simple and convenient, reaction conditions are mild, and application and development are easy.

The invention discloses photo-thermal conversion wood-based hydrogel and a preparation method thereof in the technical field of nano materials and biological materials, and the preparation method comprises the following steps: synthesizing a conjugated polymer CP, dissolving the CP in THF, and adding DSPE-PEG2000 and hemin to obtain CP-Hemin nano powder; and compounding the CP-coated Hemin nano powder, flexible wood and PVA (Polyvinyl Alcohol) to obtain the wood-based hydrogel. The wood-based hydrogel provided by the invention has high photothermal conversion efficiency, can be rapidly heated under laser induction of a near-infrared second region, releases reactive oxygen free radicals at the same time, can be applied to photothermal therapy and photodynamic therapy, and has a prospect of being applied to the fields of catalysis, medical treatment and the like.

The invention discloses a sewage treatment method based on ultrasonic enhanced photocatalysis cooperating with microorganisms, a Mn-TiO2 / Fe2O3 composite photocatalyst is created for the first time, meanwhile, a heterojunction structure of Fe2O3 and TiO2 can promote directed migration of photo-induced electron-hole pairs, Mn doping serves as an electron trap to further inhibit recombination, the carrier separation efficiency is improved, and the photocatalytic activity is improved. Therefore, the generation amount of active oxygen is greatly increased, and an easily degradable substrate is provided for microbial metabolism. An ultrasonic technology is introduced into a sewage treatment system of Mn-TiO2 / Fe2O3 photocatalysis and microorganisms in a breakthrough manner, so that the effective contact area of florae and pollutants / intermediate products is increased, and the decomposition capability of the microorganisms on the pollutants is enhanced; sewage treatment is carried out by innovatively adopting a three-effect synergistic effect of ultrasonic cavitation, photocatalytic oxidation and microbial metabolism; the pseudomonas is subjected to ultrasonic domestication, so that the pseudomonas has ultrasonic resistance, the normal metabolism and degradation capability of microorganisms in an ultrasonic environment is ensured, and efficient sewage treatment is performed according to the microorganisms required by wastewater culture of different pollutants.

The invention discloses a porous CoFe hydrotalcite nano material as well as a preparation method and application thereof, and relates to the field of nano materials. The porous CoFe hydrotalcite nano-material is of a porous layered double hydroxide nano-structure, and the aperture of the porous CoFe hydrotalcite nano-material ranges from 2 nm to 10 nm. The porous CoFe hydrotalcite nano material is prepared through a microwave hydrothermal synthesis method, the preparation method is simple, easy to operate and environmentally friendly, and industrial production can be achieved. The porous CoFe hydrotalcite nano material prepared by the method is stable in structure, has photocatalytic activity and peroxidase-like activity, can effectively catalyze and generate various reactive oxygen free radicals under the illumination condition, realizes efficient synergistic killing of bacteria, and has a good antibacterial effect.

The invention provides bioactive conductive hydrogel as well as preparation and application thereof. The hydrogel comprises a dynamic non-covalent cross-linked network which is composed of natural macromolecules and at least comprises a reversible and environment-responsive cross-linking mode; the responsive conductive component is connected with the dynamic non-covalent cross-linked network through a covalent bond or a coordinate bond, the electrical property of the responsive conductive component changes along with the change of the wound surface microenvironment, and electrical signal feedback of the wound surface state is provided through the change of the electrical property; and the active substance is connected to the dynamic non-covalent cross-linked network through a responsive chemical bond, and the responsive chemical bond is broken under specific conditions of a wound surface microenvironment to release the active substance. Compared with the prior art, the integrated design of active oxygen monitoring and drug release is realized for the first time, the wound healing time (about 30-40%) can be remarkably shortened, the complication risk is reduced, and an innovative solution is provided for wound management in an intelligent medical mode.