944 results about "Hydroxyl radical" patented technology

The invention provides lepidolite flotation wastewater treatment equipment and a flotation process, and relates to the technical field of wastewater treatment, the lepidolite flotation wastewater treatment equipment comprises a reaction tank, a stirring mechanism, a swing dosing mechanism and a spraying mechanism; the stirring mechanism comprises a mounting frame fixedly arranged at the top of the reaction tank, and a rotating shaft is vertically and rotatably connected to the inner side of the mounting frame. According to the scheme, a ferrous sulfate solution is finally added into the reaction tank through the spraying mechanism, then a diluted H2O2 solution is intermittently fed through the swing medicine feeding mechanism, the H2O2 solution generates strong oxidizing hydroxyl free radicals under the catalysis of the ferrous sulfate solution, and therefore hydrophobic chains and polar groups of residual medicine are destroyed, and the medicine is obtained. The lepidolite metallurgical flotation wastewater is degraded into small molecular organic matters or mineralized into CO2 and H2O, so that the phenomenon that the subsequent coagulating sedimentation or adsorption process is hindered by residual chemicals is avoided, the chemical oxygen demand and toxicity of the wastewater are reduced, the subsequent biological treatment on the wastewater is facilitated, and the treatment effect and efficiency of the lepidolite metallurgical flotation wastewater are effectively 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 discloses a drug-loaded liposome nano-particle, a preparation method thereof and application of the drug-loaded liposome nano-particle in treatment of brain glioma, and belongs to the technical field of biological nano-medicines. The invention provides a novel copper phthalocyanine derivative and catalase co-loaded lipidosome nanoparticle and application of the novel copper phthalocyanine derivative and catalase co-loaded lipidosome nanoparticle to treatment of brain glioma on the cellular level. The nano-particles are obtained by wrapping copper phthalocyanine derivatives and catalase with lipidosome prepared by a microfluidic method. The co-drug-loaded liposome can catalyze excessive H2O2 in brain glioma to generate oxygen, and O2 is continuously supplied to photodynamic therapy (PDT) to generate active oxygen; meanwhile, Cu < 2 + > can deplete glutathione and improve the oxidative stress level in the glioma, the reduction product Cu < + > can convert H2O2 into hydroxyl radicals with higher toxicity through a Fenton-like reaction, oxidative stress injury is doubly amplified, cascade cooperation of PDT and chemical dynamic therapy (CDT) is achieved, and the treatment effect on the glioma is remarkably enhanced.

The utility model discloses a water treatment device adopting an ozone micro-nano bubble coupling electrochemical oxidation process. The water treatment device comprises an ozone generating device, a micro-nano bubble generating device, a BDD (Boron Drain Discharge) electrode unit and an air flotation filter tank device, the device has the following beneficial effects: (1) the Venturi jet device is adopted to release ozone micro-nano bubbles, so that wastewater and the micro-nano bubbles are fully stirred and mixed and are fully contacted with the BDD electrode for oxidative degradation, and the impact force formed by jet flow can wash the BDD electrode plate, so that the BDD electrode plate is prevented from being easily blocked; (2) an ozone micro-nano bubble technology and a BDD electrode technology are coupled to generate a synergistic effect, a large number of hydroxyl radicals are generated, the oxidation capacity is enhanced, the organic matter removal capacity is improved, and the sterilization, decoloration and deodorization capacities of the device on raw water are enhanced. And (3) the BDD is combined with an air flotation process, so that the occupied area is reduced, and the layout is optimized. And (4) fine particles in the water body are further removed by the air floatation superposition filter tank, and the concentration of suspended particulate matters is reduced.

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 discloses a mining gas extraction conveying device which comprises at least one protective sleeve used for conveying gas, an extraction pump used for extracting gas and a conveying pipe located in the protective sleeve, and the protective sleeves are fixedly connected through a fixing sleeve in an airtight embedded mode. A first butt joint sleeve in airtight connection with the conveying pipe is fixedly installed in the middle of the fixing sleeve. The inner wall of the protective sleeve is coated with the manganese dioxide coating, ozone is filled in cooperation with the one-way gas pipe, when gas leaks to the protective sleeve in the conveying pipe, the ozone generates hydroxyl free radicals under catalysis of manganese dioxide, the hydroxyl free radicals and methane are subjected to an oxidation reaction, and the hydroxyl free radicals are decomposed into carbon dioxide and water, so that the explosion risk is reduced while the gas concentration is reduced; leaked gas is actively treated by utilizing a chemical catalysis principle, decomposition can be carried out when the gas leaks, the safety of the device is effectively improved, meanwhile, generated water prompts the leakage position through a dyeing patch of a drainage pipe, and timely maintenance is facilitated.

The invention belongs to the technical field of extraction and purification of plant components, and relates to a low-temperature freezing vacuum drying nano processing method for extracting anthocyanin from purple corn, in particular to a method for extracting anthocyanin from corn kernels, cores, straws, roots and stigmas of purple corn. The processing method comprises the steps of pretreatment, concentration, hydroxyl radical treatment, quick freezing, nano crushing and the like. A hydroxyl radical treatment method is adopted, so that harmful substances such as pesticide residues can be efficiently, quickly and thoroughly removed; the effect of extracting the anthocyanin from corn kernels, roots, cores, stems and stigma of purple corn by adopting a low-temperature freezing vacuum drying technology is remarkable, the purification rate is high, and the anthocyanin containing 99% of biological activity is achieved. The nanoscale anthocyanin is processed by adopting jet mill equipment and can be conveniently absorbed by a human body and widely applied to various fields.

The electro-catalytic oxidation treatment device comprises an electro-catalytic box, a plurality of water pipe connectors are arranged at one length end of the electro-catalytic box, a supporting plate is arranged at the bottom in the electro-catalytic box, a plurality of polar plate groups are arranged on the upper portion of the supporting plate in the length direction, and insulating bars penetrate through the polar plate groups; the polar plate group comprises two cathode plates and an anode plate, the anode plate is positioned in a gap between the two cathode plates and is parallel to the two cathode plates, the bottoms of the anode plate and the two cathode plates are fixedly connected, and the anode plate and the cathode plate are L-shaped and form the right-angle U-shaped polar plate group; the upper ends of the anode plates and the cathode plates are fixedly connected with metal rods, the metal rods penetrate out of the side walls of the adjacent electro-catalysis boxes, and electric connectors are arranged at the outer ends of the metal rods. According to the electrocatalytic oxidation treatment device for the landfill leachate, the generation amount of oxidants such as hydroxyl radicals is changed by adjusting the current and voltage of the catalytic polar plate, so that pollutants are oxidized and removed. The method has the characteristics of simplicity in operation, low cost, broad spectrum, full quantization and the like.

According to the conductive gel grinding tool provided by the invention, the foamy copper framework is added on the basis of a conventional gel resin grinding tool, and the conductive gel grinding tool is prepared according to specific steps, so that the grinding tool has conductivity; during polishing, the conductive gel grinding tool is connected with the negative electrode of a power source to serve as a cathode, polishing liquid is matched, and an electrolytic reaction can occur in a polishing area on the surface of the grinding tool. Correspondingly, the invention further provides an electro-Fenton catalysis auxiliary polishing method. According to the method, electro-Fenton catalytic auxiliary polishing of the hard and brittle materials is achieved through the conductive gel grinding tool with the specific structure, the polishing efficiency is high, little iron-containing sludge is generated, and environmental pollution is small; generation of hydroxyl free radicals in a polishing solution in a machining area is controlled through the electro-Fenton effect, oxidation of the surface of a workpiece is achieved, then an oxidation layer on the surface of the workpiece is mechanically removed through a conductive gel grinding tool, the workpiece and the grinding tool do not need to be soaked in an electrolytic solution for polishing, the electro-Fenton auxiliary polishing device and the operation process are simplified, and the practical value is high.

The invention relates to a method for selectively leaching and regenerating a positive electrode material from a waste lithium ion battery, and belongs to the technical field of lithium ion batteries. The method comprises the following steps: discharging, disassembling, crushing, calcining and screening the waste lithium ion battery, adding an obtained positive active material into an oxalic acid solution, and stirring and reacting at 60-80 DEG C under the irradiation of an ultraviolet lamp to obtain a leaching solution rich in metal elements and leaching residue iron phosphate; adding sodium carbonate into the leachate for reaction to obtain lithium carbonate; and ball-milling and mixing iron phosphate, lithium carbonate and a carbon source, drying and calcining to obtain the regenerated lithium iron phosphate positive electrode material. The oxalic acid system is catalyzed by ultraviolet light to generate hydroxyl free radicals with strong oxidizing property, so that the leaching efficiency of lithium is remarkably improved, and the dissolution of iron is inhibited, thereby realizing the efficient separation of lithium and iron. The leaching residue is high-purity iron phosphate, lithium in the leaching solution is recycled in the form of lithium carbonate, and the leaching residue and the lithium carbonate can be directly used for regenerating the lithium iron phosphate positive electrode material as precursors, so that the technological process is greatly simplified, and the production cost is reduced.

The invention discloses a method for degrading organic pollutants by utilizing self-decomposition reaction of decoupling peroxide, which is used for efficiently activating hydrogen peroxide through an electrochemical process to realize efficient degradation of the organic pollutants in water. The method is based on an electrolysis system, and an anode and a cathode have a synergistic effect: the anode is subjected to a hydrogen peroxide oxidation reaction, and superoxide free radicals (. O2 <->) and singlet oxygen (1O2) are generated in the process of electrooxidizing hydrogen peroxide to generate oxygen; the cathode is subjected to hydrogen peroxide reduction reaction, and hydroxyl radicals (. OH) are generated in the process of electrically reducing hydrogen peroxide to generate water. Under the driving of an external power supply, the method decouples a hydrogen peroxide self-decomposition path, promotes hydrogen peroxide to generate reactive oxygen species (ROS) with strong oxidizing property and non-selectivity through an electrochemical reaction path, and further efficiently degrades organic pollutants. The method has the advantages of low energy consumption, environmental friendliness, sensitive operation and high degradation efficiency.

The invention provides an electrochemical active oxygen supply device for a drum of a washing machine and the washing machine. The device serves as a functional inner component, is tightly attached to the inner wall of an outer barrel of the washing machine or in a barrel gap, does not need to be connected with an external water path, achieves high integration with the roller, and reduces occupation of the effective washing volume of the roller to the maximum extent. A first shell and a second shell are combined to form a reaction space, and a difunctional anode electrode and a difunctional cathode electrode are integrated in the reaction space and are electrically connected with a positive electrode and a negative electrode of an external power supply respectively to form a complete electrochemical loop. When water flow naturally flows through the reaction space in the washing process, a specific working potential is applied to the difunctional anode electrode under constant potential control, so that hydrogen peroxide (H2O2) and / or hydroxyl radicals (OH) are / is generated on the surface of the difunctional anode electrode in an in-situ electrochemical mode.

The invention discloses a strain of Blastococcus atamensis YC-1 and application of the strain of Blastococcus atamensis YC-1, and belongs to the field of microbial strains. The streptococcus sp. YC-1 provided by the invention has high antioxidant activity and also has the capability of producing DHHB (docosahexaenoic acid); meanwhile, the YC-1FLE is prepared by adopting absolute ethyl alcohol as a solvent, has no toxicity to HaCaT cells, is relatively high in reducing capacity, has a scavenging effect on DPPH free radicals, ABTS cation free radicals and hydroxyl free radicals, has a tyrosinase inhibition effect and shows good antioxidant and whitening effects; when the YC-1FLE is applied to the sunscreen lotion, the sunscreen coefficient of the sunscreen lotion containing the YC-1FLE is obviously higher than that of a blank control group, which shows that the YC-1FLE has better ultraviolet resistance. Therefore, the strain and the lysate extract of the fermentation product of the strain have huge application potential in the field of cosmetics.

The invention discloses a composite catalyst for a peracetic acid activation system and a preparation method and application thereof, and relates to the technical field of advanced oxidation water treatment. The preparation method of the catalyst comprises the following steps: preparing an aqueous solution of a cobalt source as a precursor solution; adding a manganese source into the precursor solution to obtain a Co-Mn mixed salt solution; adding a complexing agent into the Co-Mn mixed salt solution to form a stable sol system; heating the sol system at constant temperature to obtain wet gel; drying the wet gel to obtain a porous dry gel precursor; calcining the porous xerogel precursor, and then cooling and grinding to obtain the composite catalyst for the peracetic acid activation system. The composite structure in the catalyst greatly improves the rate of generating hydroxyl radicals and organic oxygen radicals by decomposing peracetic acid by promoting electron transfer circulation of a metal active center, shows good structural stability and recyclability, and is especially suitable for degradation of an organic pollutant sulfamethoxazole in a water body.

The invention discloses a bacterium-enzyme mixed preparation for PET plastic degradation and a preparation method thereof, and belongs to the technical field of enzyme preparations, a lanthanum metal framework is formed, loaded on the surface of titanium dioxide and carbonized to obtain a lanthanum-doped porous carbon layer, and then nitric acid treatment and silane coupling agent treatment are performed to significantly increase the specific surface area and roughness, so that the specific surface area is increased; the calcium-based diatomite is taken as a carrier to form a sodium alginate microcapsule taking an enzyme preparation as an inclusion, and the sodium alginate microcapsule is loaded on the surface of the calcium-based diatomite, so that the situation that titanium dioxide generates hydroxyl free radicals in photocatalysis to directly attack the enzyme preparation is avoided, and the degradation effect on the PET plastic is prolonged; calcium ions in the calcium-based diatomite can increase the crosslinking degree with the sodium alginate, the load rate of the sodium alginate microcapsule is increased, the strength of the microcapsule is improved, and the slow release effect of an enzyme preparation in the microcapsule is further improved.

The invention provides a carrier material for supporting a protein drug. The carrier material comprises an inner core, a calcium carbonate coating layer coating the inner core and a polyethylene glycol-polyglutamic acid diblock copolymer chain segment anchored on the coating layer. The intracellular protein delivery carrier provided by the invention can effectively support various metal ions and protein drugs with the Fenton / Fenton-like reaction catalysis effect, and after the intracellular protein delivery carrier is endocytosed by cells, the protein drugs, calcium ions and the metal ions with the Fenton / Fenton-like reaction catalysis effect are released; metal ions can catalyze hydrogen peroxide in the endosome / lysosome to generate hydroxyl radicals with high oxidation activity, lipid molecules are oxidized, and a lysosome membrane is destroyed; the released calcium ions can cause mitochondrial calcium overload, improve the level of hydrogen peroxide in cells, promote generation of hydroxyl radicals in endosome / lysosome and damage of membranes of the hydroxyl radicals, induce efficient rupture of the endosome / lysosome and deliver protein drugs into cytoplasm so as to play the functions of the protein drugs.

The invention discloses a method for oxidation treatment of winery wastewater, and belongs to the technical field of environmental protection. The winery wastewater treatment method comprises the following steps: mixing winery wastewater and persulfate to form a reaction solution, and then carrying out ultrasonic cavitation treatment on the reaction solution to generate hydroxyl free radicals and persulfate free radicals. The treatment method disclosed by the invention has the advantages of simple process, high safety and low cost, and shows a good application prospect in the environmental protection fields such as winery wastewater treatment and similar wastewater treatment.

The invention provides a method for preparing graphene through chemical vapor deposition, which comprises the following steps of: growing a graphene film on the surface of a substrate through a chemical vapor deposition method by taking a nitrogen-containing organic matter or a composition containing the nitrogen-containing organic matter and an alcohol compound as a carbon source; wherein in the composition, the volume fraction of the alcohol compound is less than or equal to 1%. The nitrogen-containing organic matter disclosed by the invention can be efficiently cracked under a high-temperature and hydrogen-free condition to provide enough carbon active species so as to promote the growth of graphene; the nitrogen-containing organic matter has good volatility and stability, so that the carbon source can effectively participate in the CVD reaction, and the carbon source can continuously and uniformly supply carbon atoms in the whole growth process; furthermore, hydroxyl radicals generated by cracking of the alcohol compounds can effectively remove amorphous carbon, so that the crystallization quality of graphene is improved, and defects are reduced; in addition, hydrogen does not need to be introduced in the preparation process, and potential safety hazards caused by hydrogen are eliminated.

The invention discloses an ozone catalytic oxidation coupling membrane separation sewage and wastewater advanced treatment and catalyst recycling method, and belongs to the technical field of sewage and wastewater treatment. The invention aims to solve the problem that the existing ozone powder catalyst is difficult to recover and not easy to reuse. By developing a catalytic ozonation coupling membrane separation process, an integrated process structure and a split process structure and an operation mode are provided, and a backwashing method is utilized, so that recycling of a high-efficiency powder catalyst is realized, and deep treatment and purification of sewage and wastewater are coordinated. According to the method, the high efficiency of ozone oxidation is fully exerted, a large number of hydroxyl free radicals generated by fast catalytic ozonolysis efficiently oxidize and degrade organic matters, the influence of complex water quality can be dealt with, a regular membrane cleaning strategy is adopted, membrane pollution is effectively relieved, the service life of a membrane is prolonged, and the recovery rate and catalytic efficiency of a catalyst are ensured; the device has the advantages of easiness in operation, small occupied area, simple equipment structure, easiness in long-term operation and the like.

The invention relates to a method for recovering tellurium from copper anode slime through cooperation of ultrasound and hydrogen peroxide, and belongs to the field of wet metallurgy of scattered metal. The method comprises the following steps: drying and grinding copper anode slime to obtain copper anode slime powder; the method comprises the following steps: adding copper anode slime powder into a sulfuric acid solution, mixing to obtain copper anode slime slurry, adding hydrogen peroxide into the copper anode slime slurry, carrying out ultrasonic enhanced leaching for 20-160min, and carrying out solid-liquid separation to obtain a leaching solution containing copper and tellurium and high-grade valuable metal leaching residues. According to the method, hydrogen peroxide is effectively promoted to be decomposed by ultrasound to generate hydroxyl radicals, the oxidation potential of a system is regulated and controlled, copper and tellurium are selectively converted into copper ions, tellurate radicals enter a solution, and valuable elements such as gold, silver and selenium are enriched in slag; necessary heat is provided for the reaction by utilizing the heat effect of ultrasonic and heat released by chemical reaction, and extra heating is not needed; strong jet flow generated by ultrasound effectively destroys raw material inclusion and secondary wrapping, reaction mass transfer is enhanced, and the leaching rate of tellurium is increased. The method disclosed by the invention is simple in leaching process operation, low in cost and high in reaction speed.

The invention discloses an organic wastewater advanced treatment method and device with low agent input. The method comprises the following steps: an anaerobic biological iron-sulfur reduction reaction process: fully mixing elemental sulfur, ferric iron, iron-sulfur reduction sludge and wastewater containing organic carbon and organic pollutants with electronegative groups, carrying out anaerobic biological elemental sulfur reduction and iron reduction reactions, and directionally generating polysulfide and ferrous sulfide in situ; a nucleophilic substitution reaction process: carrying out nucleophilic substitution reaction on the organic pollutants with the electronegative groups and the polysulfide, and removing the electronegative groups to generate a reduced organic product; in the oxidation reaction process, ferrous sulfide reacts with dissolved oxygen to generate hydroxyl free radicals, the reduction state organic product is oxidized and degraded, and elemental sulfur and ferric iron are generated; and a sludge precipitation process: refluxing the precipitate to the anaerobic biological iron-sulfur reduction reaction zone, and discharging clarified water. The method provided by the invention realizes deep degradation and detoxification of refractory organic pollutants, and has the advantages of low agent investment, low cost and no secondary pollution.

The invention relates to a diatomic catalyst for detecting carbosulfan pesticide residue and a preparation method, and belongs to the technical field of food safety detection. According to the invention, a reducing sulfide generated by breaking a nitrogen-sulfur (N-S) bond of carbosulfan under an acidic condition is used as a specific substance. The reductive sulfide not only can prevent bimetal active sites in the diatomic catalyst, but also consumes hydroxyl radicals generated by catalyzing hydrogen peroxide (H2O2), and the sensing switch enzyme formed by a dual enzyme inhibition mechanism causes the enzyme substrate 3, 4-dihydroxyl-3, 4-dione to be converted into the diatomic catalyst, so that the catalytic activity of the diatomic catalyst is improved. The blue color of the 3, 3 ', 5, 5'-tetramethyl benzidine (TMB) gradually becomes light along with the increase of the concentration of carbosulfan, sensitive visual detection is implemented, and after a blue product is read by using an ultraviolet spectrophotometer, the absorbance value generated by an ultraviolet absorption spectrum at 654 nm is linearly dependent on carbosulfan. The prepared diatomic catalyst effectively improves the detection sensitivity of the carbosulfan pesticide residue, and has good popularization and application prospects.

The invention discloses a method for increasing the extraction yield of tremella polysaccharide and application, dry tremella is used as a raw material, tremella polysaccharide is effectively extracted by utilizing an ultrasonic-cellulase wall breaking coupling green solvent method, the extraction yield of tremella polysaccharide is effectively increased, the method is green and environment-friendly and is easy to control, and the obtained tremella polysaccharide has excellent biological activity and can be used for preparing the tremella polysaccharide. The water loss rate of water can be reduced, and the moisturizing and anti-wrinkle capabilities are good; the caenorhabditis elegans can effectively remove hydroxyl free radicals, DPPH free radicals and ABTS free radicals, shows strong oxidation resistance, can significantly prolong the survival rate of caenorhabditis elegans under hydrogen peroxide stress, and shows that the caenorhabditis elegans has good oxidative stress resistance.

The invention discloses a preparation method and application of a magnetic resonance imaging nanoprobe capable of penetrating pancreatic cancer tumor interstitial substance, and belongs to the technical field of self-driven magnetic resonance imaging nanoprobes. The magnetic resonance imaging nanoprobe Ag / Ag2S-GP capable of penetrating pancreatic cancer tumor interstitial substance can be subjected to oxidation-reduction reaction with H2O2 in a tumor microenvironment to continuously generate oxygen airflow, and the reverse thrust of the airflow autonomously drives the probe to move towards the deep part of the tumor interstitial substance; in addition, the Plectin-1 targeting peptide with the Ag / Ag2S-GP surface modified can also be specifically combined with Plectin-1 protein highly expressed by pancreatic cancer cells, and accurate spatial positioning and monitoring of pancreatic cancer are achieved under the guidance of MRI (Magnetic Resonance Imaging). Meanwhile, Ag / Ag2S-GP reduces Schottky barriers under the piezoelectric catalysis action of ultrasonic excitation, hydroxyl radicals are generated, tumor cell apoptosis is induced, and therefore the pancreatic cancer diagnosis and treatment effect is enhanced.

The invention relates to a method for treating wastewater by activating peroxymonosulfate through cobalt nanoparticle encapsulated carbon nanotubes, which comprises the following steps: adding a nanoparticle encapsulated carbon nanotube catalyst with the concentration of 10-200mg / L into wastewater, and stirring; after uniformly stirring, adding peroxymonosulfate with the concentration of 0.1-2.0 mmol / L to generate hydroxyl radicals to degrade organic pollutants in the wastewater; and after the wastewater is treated, recovering the nano-particle encapsulated carbon nanotube catalyst. According to the invention, the carbon nano tube provides a protection effect on the cobalt nano particles and plays a role in continuously and efficiently activating peroxymonosulfate to generate active species, so that the carbon nano tube has excellent recycling performance; meanwhile, in practical application, the commercial PES film loaded with the cobalt nanoparticle encapsulated carbon nanotube catalyst can be used for continuously and effectively removing organic pollutants.

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 belongs to the technical field of biological medicine, and discloses application of cornu cervi degelatinatum extract in strengthening a skin barrier. The cornu cervi degelatinatum extract disclosed by the invention can promote proliferation of HacaT cells and expression of tight junction protein Claudin-1, also has better capabilities of removing hydroxyl free radicals, DPPH free radicals and superoxide anions and an effect of promoting wound healing, and can protect a skin mechanical barrier and promote barrier injury repair. The cornu cervi degelatinatum extract has a good application prospect in preparation of drugs for promoting wound healing and products related to strengthening and toughening skin barriers, and resource development and utilization of cornu cervi degelatinatum are enriched.

The invention discloses a gallium-based liquid metal conductive hydrogel and a preparation method and application thereof.The method includes the steps that firstly, liquid metal gallium is modified through an amphiphilic block copolymer, so that the liquid metal gallium can be stably dispersed in a hydrogel precursor solution, hydroxyl radicals are generated through the liquid metal gallium, and the hydrogel precursor solution is formed; in-situ polymerization of an ionic liquid monomer and an acrylic acid monomer is further initiated to form a second network in the dual-network hydrogel, and the second network cooperates with a borate bond cross-linked polyvinyl alcohol first network to prepare the liquid metal-based conductive hydrogel with excellent conductivity, good mechanical properties and relatively strong interface adhesion. The problems that existing conductive hydrogel is poor in conductive filler compatibility, poor in liquid metal interface stability and the like are solved.

The invention provides a Fenton reagent, a polishing solution, a polishing method of a diamond substrate and a polished diamond wafer. The invention provides a Fenton reagent. The Fenton reagent comprises a hydrogen peroxide solution and a composition containing ferrite, the ferrite-containing composition comprises ferrite, a host molecule and a guest molecule, the host molecule is provided with a hydrophobic cavity for accommodating the guest molecule; the guest molecule has a conjugated pi bond that coordinates with Fe. The Fenton reagent and abrasive particles are adopted as a polishing solution, diamond is polished under irradiation of visible light, stability of the concentration of Fe < 2 + > in the polishing solution can be guaranteed, stable supply of hydroxyl radicals is achieved, and the high-quality diamond surface can be obtained.