374 results about "Singlet oxygen" patented technology

The invention relates to the technical field of lithium ion batteries, in particular to a modified positive electrode material, a preparation method and application thereof, a positive electrode plate and an all-solid-state battery. The modified positive electrode material comprises a positive electrode material matrix, a singlet oxygen quencher serving as an inner coating layer and a conductive polymer serving as an outer coating layer, wherein the quenching rate constant of the singlet oxygen quencher is greater than or equal to 1 * 10 < 6 > M <-1 >. S <-1 >. The modified positive electrode material provided by the invention adopts double-layer coating, so that the problem of interface stability caused by oxygen evolution on the surface of the positive electrode material is solved; meanwhile, the modified positive electrode material is applied to the lithium ion battery, especially an all-solid-state battery, so that the cycling stability and safety of the lithium ion battery at high temperature and high pressure are improved.

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 provides an oxygen vacancy defect carbon nitride anchored iron atom cluster catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. Iron atoms are anchored in a carbon nitride (Ov-C3N4) structure containing oxygen vacancy defects in a cluster form, and Fe-Ov-C defect bonds are formed between the oxygen vacancy defects in C3N4 and iron atom clusters to stabilize the iron atom clusters, so that the problem of thermodynamic instability of the catalyst is solved while higher atom utilization efficiency is obtained; the Fe-Ov-C defect bond atoms can reasonably regulate and control the electronic structure of the center of an iron cluster d band, so that the catalytic activity and the cycling stability are greatly enhanced; besides, iron atom clusters and persulfate act to cause O-O bond breakage, non-free radical singlet oxygen is formed, and the problem that the catalytic efficiency is sharply reduced due to free radical annihilation in a complex water environment can be effectively solved.

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 belongs to the technical field of organic dye synthesis and application, and discloses a conjugated compound containing a benzothiophenazine structure as well as a preparation method and application thereof, and the conjugated compound containing the benzothiophenazine structure has excellent photophysical properties, singlet oxygen yield and superoxide anion generation capacity. The novel conjugated compounds ENBO-NI and ENBS-NI containing benzothiophenazine structures are successfully prepared by replacing a benzene ring of Nile blue with a cycloalkane structure and adjusting the electron donating ability of an R1 group. The two compounds have near infrared fluorescence emission, good solubility and relatively high ROS yield. Compared with a classical photosensitizer NB, the singlet oxygen yield of ENBO-NI is increased by about 117.65%, and the singlet oxygen yield of ENBS-NI is as high as 70%. The absorption wavelength of the conjugated compound is in a red light wave band. The preparation process is simple and efficient, large-scale production is easy, and the preparation method has a wide clinical application prospect.

The invention provides a water treatment method for generating singlet oxygen based on electron beam irradiation, belongs to the technical field of water treatment, and aims to provide a universal singlet oxygen generation method for a water treatment process, the method comprises the following steps: adding a metal salt into sewage to be treated, and uniformly stirring to obtain a mixed solution; wherein the metal salt comprises reducing metal ions; continuously aerating air into the mixed solution, so that the mixed solution is rich in oxygen; and carrying out electron beam irradiation on the mixed solution rich in oxygen, so that the reducing metal ions cooperate with the electron beam irradiation to activate the oxygen in the mixed solution to generate singlet oxygen, and removing new pollutants in the sewage to be treated.

The invention relates to the technical field of electrochemistry, in particular to a foam titanium-based iodine iron double-monatomic electrode, preparation thereof and application of the foam titanium-based iodine iron double-monatomic electrode in preparation of singlet oxygen. The configuration of the foamed titanium-based iodine-iron double-monatomic electrode provided by the invention has a double-monatomic synergistic effect, iodine monatomic can be utilized to dissociate water molecules to release atomic hydrogen, and the atomic hydrogen is used for reducing and activating oxygen adsorbed by iron sites, so that active sites are fully utilized, the atom utilization efficiency and reaction activity are improved, and competitive side reactions are reduced; according to the foamed titanium-based iodine iron double-monatomic electrode material, the singlet oxygen electrosynthesis rate is remarkably increased, the use scene of singlet oxygen in-situ utilization is expanded, and the foamed titanium-based iodine iron double-monatomic electrode material has excellent performance in the fields of degradation of aromatic organic pollutants in water, removal of antibiotic resistance genes, purification of pollutants such as pathogenic viruses in air and the like.

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 belongs to the field of biomedical luminescent composite materials, and particularly relates to a rare earth up-conversion nanocrystalline particle-hydrogen bond organic framework composite material and a preparation method thereof.The rare earth up-conversion nanocrystalline particle NaGdF4: Yb / Er serves as a core of the composite material, a hydrogen bond organic framework serves as a shell of the composite material, and the rare earth up-conversion nanocrystalline particle-hydrogen bond organic framework composite material is prepared. The advantages of the rare earth up-conversion nanocrystal particles and the hydrogen bond organic framework are ingeniously combined, the rare earth up-conversion nanocrystal particles and the hydrogen bond organic framework form a synergistic system, active oxygen is generated under excitation of 980 nm near-infrared light during photodynamic therapy, meanwhile, generation of the active oxygen is more efficient, the killing efficiency on tumor cells is improved, and the application prospect is wide. The rare earth up-conversion nanocrystal particle is suitable for deep tumor (such as brain glioma) treatment, meanwhile, the porphyrin core of TCPP is matched with the visible light emission spectrum of the rare earth up-conversion nanocrystal particle, efficient energy transfer is achieved, and the singlet oxygen yield is remarkably higher than that of a traditional PDT material.

The invention relates to a silver-iron diatom modified carbon nitride (AgFe-CN) photocatalytic material capable of synchronously removing organic pollutants and pathogenic bacteria as well as a preparation method and application of the silver-iron diatom modified carbon nitride (AgFe-CN) photocatalytic material, and belongs to the field of environmental chemistry and material science. The catalyst is prepared through a supramolecular coordination-thermal polymerization method, wherein silver and iron are highly dispersed on a porous carbon nitride substrate in a monatomic form. The monatomic Ag and Fe synergistically construct an electron channel, and jointly endow the catalyst with excellent photocatalytic activity. The preparation method comprises the following steps: combining the catalyst with peroxymonosulfate (PMS) to construct an AgFe-CN / PMS / Vis photocatalytic Fenton-like synergistic system; in the system, the catalyst can lead generation of an advanced oxidation system which takes singlet oxygen as a main component and cooperates with superoxide free radicals and high-valence iron oxygen species, so that efficient and synchronous removal of various organic pollutants and pathogenic microorganisms in the water body is realized. The catalyst is simple in preparation process and mild in condition, and the constructed water treatment method is high in efficiency, high in universality and good in stability and has wide application prospects.

The invention discloses a Fe-N-C catalyst and application thereof in degradation of perfluorinated and polyfluoroalkyl substances, and belongs to the technical field of water treatment. The preparation method comprises the following steps: taking nitrogen-doped carbon derived from pine cones as a substrate, dissolving aminated pine cones, FeCl36H2O, sodium acetate and polyethylene glycol in ethylene glycol, reacting at 200 DEG C for 10 hours, putting in an inert gas atmosphere, and calcining at 900 DEG C for 2 hours; the Fe-N-C catalyst which simultaneously contains Fe nano particles (Fe NPs) and Fe-N single atoms (Fe SAs) and has different sizes and double sites is prepared. The catalyst and PMS are mixed and then added into water, and perfluoro and polyfluoroalkyl substances in the water can be degraded; the catalyst can activate PMS to promote formation of a non-free radical pathway, depends on a degradation mechanism of Fe (IV) = O and singlet oxygen (O), the degradation rate of PFOA within 2 hours reaches 90.5%, and the catalyst also shows relatively strong tolerance in different natural water bodies; a key thought is provided for designing the efficient catalyst, and a new technical direction is expected to be provided for environmental treatment of persistent organic pollutants such as PFOA.

The present invention belongs to the field of biomedicine, and specifically relates to a light-controlled release of ONOO － Compounds and preparation methods and applications thereof. The present invention provides ONOO ‑ The donor is composed of a diphenyl phenothiazine analogue and arginine covalently linked. Its strong conjugation effect makes it extremely photoresponsive. The polymer has near-infrared light emission and excellent reactive oxygen and reactive nitrogen generation capabilities. When L6 is irradiated with a 660nm laser, it will produce superoxide anions and singlet oxygen. Singlet oxygen oxidizes the guanidine group of arginine to produce NO and ·O2 ‑ and NO to form peroxynitrite (ONOO ‑ ), achieving the goal of highly effective tumor cell killing. Therefore, this compound is a potentially highly effective photosensitizer for tumor killing. Compared to conventional photosensitizers, this killing method has stronger oxidative and nitrative cell damage capabilities, and its development cycle is shorter than that of other photosensitizers, thus possessing great potential application value in clinical treatment.

The invention discloses a preparation method of an inorganic piezoelectric catalytic membrane and application of the inorganic piezoelectric catalytic membrane in water treatment by coupling an advanced oxidation technology, and belongs to the technical field of environmental functional materials and water treatment. Technical breakthrough is achieved through a synergistic mechanism of an inorganic piezoelectric material and an advanced oxidation technology, the inorganic piezoelectric catalytic membrane is prepared by taking the piezoelectric material as a core piezoelectric component through ball-milling mixing, dry-pressing forming and high-temperature calcination processes, a multi-stage pore channel structure (the pore diameter is 50-100 nm) is formed, and a piezoelectric electric field larger than or equal to 0.5 V is generated under dynamic mechanical energy; the electric field is used for directionally activating the oxidant to generate high-selectivity singlet oxygen (1O2) by adjusting an electron structure on the surface of the catalyst, and the selectivity of the singlet oxygen reaches 95% or above; the mass transfer efficiency is remarkably improved through the synergistic effect of the membrane confinement effect and the piezoelectric micro-current, efficient removal of refractory pollutants such as sulfamethoxazole and bisphenol A is achieved (the degradation rate within 30 minutes is larger than or equal to 99%), and the self-cleaning function is achieved (the flux recovery rate is larger than or equal to 98%).

The invention discloses a preparation method and application of a monatomic catalyst for activating peroxymonosulfate. The monatomic catalyst provided by the invention comprises a carrier and cobalt monatomic loaded on the carrier, the carrier is an oxygen-doped graphite phase carbon nitride nanosheet; the cobalt single atoms exist on the carrier in a well dispersed single atom structure. The monatomic catalyst disclosed by the invention has excellent capability of degrading organic pollutants, takes singlet oxygen as a key active oxygen species, and shows high selectivity, wide pH tolerance and adaptability to various complex water matrixes. Meanwhile, the monatomic catalyst disclosed by the invention has the potential of sustainable water purification application, so that the operation cost of a peroxymonosulfate activation technology is reduced, and the problem of ecological pollution caused by the use of a large amount of peroxymonosulfate is avoided.

The invention is suitable for the technical field of sonodynamic antibacterial materials, and provides a preparation method of a polyphenol nanodot sonosensitizer and application of the polyphenol nanodot sonosensitizer in sonodynamic antibiosis. The method comprises the following steps: dissolving tannic acid (TA) in deionized water, stirring at room temperature until the tannic acid is completely dissolved, carrying out oxidative polymerization reaction on the dissolved solution, assembling the tannic acid through oxidative polymerization to obtain the polyphenol nanodot sound-sensitive agent (TANDs), cooling after the reaction is finished, collecting the product, filtering, transferring the filtrate into a dialysis bag for dialysis, changing water once every 6 hours, and drying to obtain the polyphenol nanodot sound-sensitive agent (TANDs). Freeze-drying the dialyzed solution into solid powder, and dispersing the freeze-dried solid powder into deionized water for later use; tA is used as an element, the TANDs with the sound-sensitive property are prepared through simple oxidative polymerization reaction self-assembly, the TANDs show excellent singlet oxygen (1O2) generation capacity under the ultrasonic (US) condition, and the TANDs also show excellent antibacterial performance in the actual antibacterial application process.

The invention relates to the technical field of nano materials and biomedical engineering, and discloses a dye-sensitized rare earth up-conversion luminescent nano material as well as a preparation method and application thereof. The dye-sensitized rare earth up-conversion luminescent nano-material comprises a rare earth doped up-conversion nano-particle core, an unsaturated fatty acid salt self-assembled shell layer and a near-infrared dye modified on the surface of the rare earth doped up-conversion nano-particle. The unsaturated fatty acid salt coating layer endows the material with excellent water dispersibility through a hydrophilic group; a hydrophobic chain segment and an unsaturated double bond can effectively block water and oxygen permeation and quench singlet oxygen, so that the photobleaching half-life period of the material is increased by 86.7 times or more compared with that of a conventional coating material, and the light stability is excellent; the material successfully realizes efficient up-conversion luminescence under excitation of a low-power near-infrared light emitting diode (NIR LED, the power density of which can be as low as 100mW / cm < 2 >), and thoroughly gets rid of dependence on a high-cost and high-risk laser.

The invention belongs to the technical field of nano luminescent materials, and particularly relates to a near-infrared light response up-conversion nano composite material as well as a preparation method and application thereof. The nano composite material comprises a rare earth up-conversion nano particle core, a porphyrin metal-organic framework shell layer, near-infrared dye loaded in pores of a porphyrin metal-organic framework and an amphiphilic phospholipid polymer modified on the outer surface of the porphyrin metal-organic framework, metal ions in the porphyrin metal-organic framework shell layer are metal ions with a heavy atom effect, and the metal ions are selected from at least one of Pt (II), Pd (II), Cu (II), Mn (II) or Ir (IV). The nano composite material disclosed by the invention shows excellent singlet oxygen yield and photodynamic sterilization effect.

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 application belongs to the technical field of wastewater treatment, and provides a method for realizing continuous degradation of pollutants under low dosage of self-assembled induced carbon confinement material, comprising the following steps: adding peroxyacetic acid and carbon confinement material into wastewater containing organic pollutants, treating the wastewater under stirring, and activating the peroxyacetic acid by the carbon confinement material to generate hydroxyl radicals, organic radicals, singlet oxygen and Co(IV) to degrade the organic pollutants in the wastewater during the wastewater treatment; the carbon confinement material is composed of a cobalt material and a nitrogen-doped carbon material coated on the cobalt material, the cobalt material is composed of Co and CoO, and the carbon confinement material is a nanoparticle with a core-shell structure. The present application can realize efficient utilization of the oxidant peroxyacetic acid and mediate continuous degradation of micro-pollutants under low dosage of the carbon confinement material, thereby reducing the treatment cost of wastewater containing organic pollutants.

The application discloses an iron / copper-porphyrin nanoparticle and a preparation method and application thereof, and the nanoparticle is prepared through the following steps: adding iron chloride, copper chloride, tetra(4-carboxyphenyl)porphyrin and benzoic acid into a reaction solvent N,N-dimethylformamide solution, uniformly stirring at room temperature, and reacting at high temperature; and after the reaction is completed, the iron / manganese-porphyrin nanoparticle is obtained through centrifugation and washing. The iron / manganese-porphyrin nanoparticle is prepared by using a brand-new method, the nanoparticle can be degraded in a glutathione solution and release iron ions and copper ions, is used for catalyzing hydrogen peroxide to be converted into a hydroxyl radical (•OH), and tetra(4-carboxyphenyl)porphyrin can generate singlet oxygen (O2) under 660 nm laser irradiation, and is expected to become a good nano-carrier for accelerating photodynamic therapy-chemical kinetic therapy. 1 O2).

This invention discloses a homogeneous microsphere based on singlet oxygen self-circulating aggregation-induced emission, its preparation, and a wash-free detection method, which improves the sensitivity and efficiency of wash-free luminescent oxygen channel immunoassay. This invention successfully prepared AIE receptor microspheres by embedding the photosensitizer AIER dye, ultra-bright AIEG dye, and singlet oxygen-responsive dye SO into carboxyl-modified polystyrene nanoparticles. Simultaneously, an antibody-1-labeled AIE receptor microsphere solution, an antigen-containing test solution, and biotinylated antibody-2 were added to a 96-well plate, followed by streptavidin-modified donor microspheres. After wash-free incubation, the fluorescence signal value was measured, and the concentration of antigen in the test solution was obtained according to a standard curve. This platform completes wash-free, highly sensitive detection within 5 minutes, innovatively combining the aggregation-induced emission characteristics of AIEgens and a singlet oxygen cycling strategy, providing an efficient and universal solution for wash-free diagnostics.

The invention relates to the technical field of precious metal recovery and water treatment, in particular to application of cobalt catalytic activation persulfate in recovery of gold in thiosulfate leachate. The invention provides application of cobalt catalytic activation persulfate in recovery of gold in thiosulfate leachate. The method comprises the following steps: blending a cobalt catalyst, persulfate and a thiosulfate leaching solution containing Au (S2O3) 2 < 3->, and carrying out complex breaking reduction to obtain a gold elementary substance. The CoNC / persulfate technology provided by the invention is proved to be a catalytic system based on singlet oxygen species, has high oxidation capacity and strong complex breaking selectivity, shows remarkable solution acid-base property adaptation and coexisting cation / anion interference resistance, and has ultrahigh recovery selectivity.

The application discloses a rare earth nanoparticle-organic photosensitizer composite material and application thereof. By introducing rare earth doped nanoparticles as an energy conversion medium, direct activation of excited triplet states of an organic photosensitizer and sensitized production of singlet oxygen under excitation of radionuclides (e.g., 64Cu, 67Cu, 90Y, 111In, 177Lu, etc.) are realized. 18 F、 99m Tc、 177 Lu, etc.) excitation, the rare earth doped nanoparticles respond to CL and the rare earth ions reach an excited state after various high-energy radiation. Subsequently, through an interface energy transfer process, the excited state energy of the rare earth ions is directly transferred to the excited triplet state of the organic photosensitizer, and then singlet oxygen is generated, realizing tumor cell killing. The nanocomposite material is surface modified to load iRGD peptides to realize in vivo tumor targeting. 18 F-FDG (fluorodeoxyglucose) can realize tumor targeting through abnormal glucose uptake of tumors. The combination of the two realizes double targeting of in vivo tumors, and enhances the anti-tumor efficacy and safety.

The application belongs to the field of heavy metal water pollution treatment, and relates to a method for rapidly and efficiently oxidizing trivalent arsenic through enhanced electron transfer, which comprises multifunctional biochar preparation and efficient oxidation process design. The method uses sludge as a biochar precursor, obtains multifunctional biochar with strong alkalinity, high specific surface area and super electron conduction through high-temperature pyrolysis, directly introduces oxygen into an As(III) solution, adds the biochar into the system after the aeration is completed, and fully stirs. The method is simple, economically feasible, has extremely high oxidation efficiency, does not require additional chemical reagents, has no reagent residues, and does not require external light or electricity. The non-free radical oxidation path dominated by electron transfer and singlet oxygen is not easily affected by inorganic ions and humic acid in actual water bodies, has strong anti-interference ability, and has a wide application range. The application not only helps to enrich the catalytic oxidation theoretical system, but also greatly improves the practical feasibility of biochar application, and has good environmental and economic benefits.

The invention discloses a method for treating antibiotic wastewater by using a nano confinement iron cluster catalyst. The method comprises the following steps: mixing and pyrolyzing an iron-containing compound and a carbon and nitrogen-containing precursor to prepare the nano confinement iron cluster catalyst, and then, adding the catalyst and an oxidizing agent into antibiotic-containing wastewater to carry out catalytic oxidation reaction. According to the catalyst, a high-activity iron cluster is stabilized by utilizing a nano confinement effect, an oxidizing agent can be efficiently activated, antibiotics are rapidly degraded through a non-free radical path with synergistic singlet oxygen and electron transfer, and the catalyst shows excellent catalytic activity, cycling stability and adaptability to different water qualities. The method is simple in process, mild in condition and environment-friendly, and a new strategy is provided for efficient deep treatment of the antibiotic wastewater.

The invention discloses a self-aggregation-induced emission type photosensitizer and a preparation method and application thereof. The photosensitizer has excellent AIE performance, and singlet oxygen can be efficiently generated after aggregation in a physiological environment; and the photosensitizer can effectively overcome the aggregation-induced quenching phenomenon, and has a synergistic effect with the lovir drugs, so that the anti-herpes virus activity is remarkably improved, and the dosage and side effects are reduced.

The present application relates to the field of environmental protection, and more particularly to an air treatment system and method based on TPOS phase transfer targeted catalysis technology. The system comprises a gas delivery unit, a free radical enhancement assembly, a phase transfer reactor, a catalysis assembly, and an intelligent control module. The gas delivery unit sends waste gas into the system, and uses ozone and singlet oxygen to preliminarily oxidize the waste gas. The free radical enhancement assembly comprises an aerosol generation unit. The aerosol generation unit converts the prepared free radical precursor solution into fine aerosol droplets. The phase transfer reactor is internally provided with a catalysis layer. The catalysis mode of the catalysis layer includes catalyst catalysis, heating catalysis, electrochemical catalysis, and ultraviolet light catalysis. The intelligent control module monitors the air treatment system in real time. Through the innovative design of multi-free radical synergistic oxidation, adjustable self-cleaning catalysis, intelligent control, and heat energy recovery, the present application realizes efficient purification, deep sterilization, energy saving and consumption reduction, and safe operation of waste gas.

The invention relates to the technical field of pharmaceutical preparations, in particular to composite condensing gel based on photodynamic therapy and a preparation method of the composite condensing gel. The preparation method of the composite condensate gel based on photodynamic therapy comprises the following steps: preparing a BSA (Bovine Serum Albumin) solution, uniformly mixing an inulin mother solution with the BSA solution, adjusting the pH value, heating in a water bath, cooling to room temperature, adding 5-aminolevulinic acid methyl ester hydrochloride into the condensate gel, adding an acid coagulant, diluting, and filling CO2 gas. According to the invention, CO2 is added into the composite condensation gel, so that the binding force of hemoglobin and O2 in tissues absorbing the composite condensation gel is reduced, and the concentration of free oxygen is improved, so that the composite condensation gel can transfer energy to surrounding oxygen and generate singlet oxygen with strong activity, thereby killing cancer cells and achieving the effect of improving the curative effect of photodynamic therapy.

The invention discloses a wavelength selective photoresponse strontium-based metal organic framework eutectic material as well as a preparation method and application thereof. A metal node of the material is strontium ions, N, N '-bis (5-isophthalic acid) naphthalimide is used as a ligand, anthracene and a derivative thereof are used as objects, N, N-dimethylformamide is used as a solvent, and the material is obtained through solvothermal reaction. The material is composed of an electron donor (D) and an electron acceptor (A), and is a strontium-based MOF eutectic with an infinitely extended pi stacked A-D-D-A configuration. The MOF eutectic material has lattice characteristics of a tetragonal crystal system, a space group is I 41 / a, and cell parameters are a = b = 28.42240 (10), c = 13.71600 (10), and alpha = beta = gamma = 90 degrees. Sr-NDI at An has unique wavelength selective photoresponse property: ultraviolet light triggers [4 + 4] dimerization of an object anthracene, red light excites [4 + 2] reaction of anthracene and singlet oxygen, and near-infrared light induces generation of free radicals.

The present application relates to the technical field of cancer detection, in particular to a kind of tumor imaging guided photodynamic therapy reagent.The reagent is named ADS254BE / H2TPP NPs, which is composed of hydrophobic conjugated polymer ADS254BE and tetraphenylporphyrin H2TPP doped polymer microspheres, and the surface of the polymer microspheres also has PSMA modification layer.The reagent is prepared by uniformly mixing ADS254BE, H2TPP and PSMA solution, ultrasonic treatment, room temperature standing, and then evaporating solvent in the solution.The photodynamic diagnosis and treatment reagent provided by the present application shows bright red emission centered at 650nm, relatively large stoke shift, higher singlet oxygen generation rate, and good light stability and biocompatibility.The present application provides a feasible strategy for constructing new optical diagnosis and treatment integrated reagent, and is expected to promote the development of imaging guided photodynamic therapy.