413 results about "Solvent evaporation" patented technology

The application discloses a kind of carbon nanotube / polyaniline composite modified epoxy resin conductive paint and preparation method thereof, belong to coating technical field.The application is prepared by preliminary disentangling carbon nanotube with specific solvent, and the carbon nanotube dispersion liquid uniformly dispersed is obtained;Afterwards, polyaniline is added to carbon nanotube dispersion liquid, and carbon nanotube / polyaniline composite is prepared by solvent evaporation or purification;Finally, carbon nanotube / polyaniline composite is compounded with epoxy resin, and high-performance carbon nanotube / polyaniline composite modified epoxy resin conductive paint is obtained.The carbon nanotube / polyaniline composite modified epoxy resin conductive paint prepared by the application has more excellent mechanical properties and electrical properties than traditional conductive paint, and can be better applied in aerospace, battery, communication, new energy and other aspects.

The application discloses a porous aluminum-based carrier and a preparation method thereof, a CO2 adsorbent and application thereof. The preparation of the porous aluminum-based carrier comprises the following steps: segmental aging: a solution containing pseudo-boehmite is subjected to two-stage aging, the first stage is stirring aging, and the second stage is standing aging, the two kinds of aging modes are combined to improve the crystallinity of the pseudo-boehmite; organic solvent washing and pore expansion: the pseudo-boehmite is filtered out, and is subjected to water washing first and then organic solvent washing; segmental drying: low-temperature air blowing drying and vacuum drying are combined, the drying mode, the drying temperature and the solvent evaporation rate during drying are adjusted to avoid pore shrinkage or collapse caused by excessively high drying temperature and excessively fast solvent evaporation speed. The preparation of the porous aluminum-based carrier is simple in operation and low in energy consumption, and the CO2 adsorbent prepared from the porous aluminum-based carrier and an organic amine has excellent adsorption performance such as high adsorption capacity, fast adsorption rate and high stability.

The utility model provides a device suitable for preparing lithium sulfide by a continuous double decomposition method. The device mainly comprises a material stirring reaction kettle, a solvent storage tank, continuous solid-liquid separation equipment, continuous solvent evaporation equipment, a first condensing tower and continuous dynamic vacuum calcination equipment, the device disclosed by the utility model can smoothly realize continuous production and preparation of lithium sulfide, and is simple in operation process and free from harmful gas pollution; in the preparation process, a single solvent is used and the solvent is recycled, so that the preparation method has the advantages of energy conservation and low cost, and cross contamination of multiple solvents is avoided; in addition, during continuous production of lithium sulfide, only one-time high-temperature calcination operation is carried out, and a lithium sulfide product with high purity and small particle size is successfully prepared; the composite cathode material can be directly used for preparing a sulfide solid electrolyte and a lithium-sulfur battery. The method has high industrial application value.

The invention discloses a production method of a sintered neodymium-iron-boron spliced magnet. The method comprises the following steps: processing a magnet to a predetermined size, cleaning and drying; dissolving solid epoxy resin, a solid latent curing agent and an accelerant by using an organic solvent to prepare an impregnating adhesive; gluing the two sides of the glass fiber cloth, and fully volatilizing a solvent to obtain pre-impregnated glass fiber cloth; after being cut, the magnetic blocks are inserted between the to-be-spliced magnets; and after being clamped by a clamp, the insulating adhesive layer is heated and cured to form a compact and pore-free insulating adhesive layer. According to the invention, air holes of the adhesive layer are thoroughly eliminated through a prepreg process, the formed insulating adhesive layer has excellent dielectric strength and insulativity, adjacent magnets can be effectively isolated, an eddy current channel can be effectively cut off, the eddy current heating problem in high-frequency application is remarkably reduced, and meanwhile, high strength and high reliability of the spliced magnet are ensured. The method is particularly suitable for the fields of motors and the like needing to reduce eddy-current loss.

The invention relates to the technical field of drug-loaded microparticles, in particular to a preparation method and application of medical stone / PLGA composite drug-loaded microparticles, medical stone and PLGA are prepared into a structure with activated nano medical stone as a core and a PLGA polymer as a shell through the processes of ball milling, acid activation, emulsification, solvent volatilization and the like, and the medical stone and the PLGA are synergistically matched, so that the drug-loaded microparticles have the advantages that the drug-loaded microparticles are uniform in particle size distribution, and the drug-loaded microparticles have good drug-loaded performance. Firstly, the hydrogel has intelligent responsiveness, can accelerate degradation in alkaline and enzyme environments of wound surfaces, and realizes accurate release of drugs as required; secondly, the long-acting controlled release property is shown, and a dual sustained release barrier is constructed through medical stone adsorption and PLGA wrapping, so that the medicine is released for more than 72 hours at a constant speed following zero-order dynamics, and burst release is effectively avoided. And thirdly, when the drug-loaded particles are used for hydrogel, the drug-loaded particles in nanoscale are combined with the hydration effect of a hydrogel matrix, so that the efficient permeability of the drug in the cuticle is greatly improved.

The invention relates to a preparation method of a biological membrane with a bionic cuticle'brick-slurry 'structure and a wound dressing application of the biological membrane, and belongs to the technical field of biological auxiliary materials. The preparation method comprises the following steps: dispersing prepared wool keratin microspheres in a fibroin solution, realizing a stable and firm brick-slurry structure by combining solvent volatilization with a photo-crosslinking technology, further crosslinking by utilizing metal ion coordination, and simultaneously endowing the dressing with the capabilities of effectively blocking bacterial permeation and sterilizing. The biological membrane exceeds the design of traditional layered wound dressings, and accurate reproduction of a natural skin structure is preferentially considered. The microspheres are assembled into a densely-arranged masonry structure material in a planned manner, so that the dressing has high moisture permeability, oxygen permeability and strong antibacterial barrier capacity, can promote repair of infectious wounds and burn and scald wounds, and has remarkable clinical application value.

The invention discloses a preparation method and application of a perovskite layer of a perovskite solar cell, and relates to the technical field of perovskite cells. The preparation method comprises the following steps: dissolving a perovskite material in an organic solvent to prepare a precursor solution; and performing slit coating on a substrate by using the precursor solution, and obtaining the perovskite layer after annealing, wherein the annealing atmosphere comprises organic salt steam and nitrogen. According to the preparation method disclosed by the invention, the defects of uneven film thickness, disordered solvent volatilization and many film surface cracks when the perovskite layer is prepared by slit coating are overcome through a special annealing process, the problem that the slit coating technology and the annealing process are incompatible in the traditional technology is solved, large-scale preparation of high-quality and low-defect film layers is realized, and the preparation method is suitable for industrial production. The method is suitable for large-scale production of efficient and stable perovskite solar cells.

The invention provides a sodium ion specific fluorescence labeled transparent soil sample as well as a preparation method and application thereof, and belongs to the technical field of rock soil and geological engineering. The method comprises the following steps: firstly, sequentially carrying out hydrophilization treatment, solvent evaporation and dissolution on a sodion combined benzofuran isophthalate probe to obtain a probe mother solution; mixing the probe mother solution, a buffer solution, an inorganic sodium salt solution and a solvent to prepare a fluorescence labeling pore solution; and finally, mixing the sodium polyacrylate particles and the fluorescence labeled pore liquid, and performing vacuum saturation treatment to obtain the transparent soil sample. The transparent soil sample provided by the invention still keeps excellent optical transparency while having sodium ion specific response capability, so that a stable and reliable experimental medium is provided for in-situ, real-time and full-field observation of sodium ion migration.

The invention discloses a compound fluralana external preparation for dogs, a preparation method and application, belongs to the technical field of veterinary drugs, and solves the problems that an existing preparation is poor in skin surface permeability, a solvent is easy to volatilize, and use experience and drug effect exertion are influenced. The preparation is prepared from the following raw materials: fluralana, moxidectin, ethyl butylacetamidopropionate and N, N-dimethylformamide. The preparation method comprises the following steps: adding N, N-dimethylacetamide, acetone, an auxiliary adjuvant, a transdermal penetration enhancer, an antioxidant and a surface film-forming agent; according to the invention, the combination of the fluralab and the moxidectin can play a synergistic effect and expand an anti-parasitic spectrum so as to achieve an internal and external driving effect; both the fluralab and the moxidectin belong to high-fat-soluble substances, parasites can be quickly repelled and killed by adding novel adjuvant natural parasite expelling ingredients, and meanwhile, the skin permeability can be improved by adding the efficient transdermal penetration enhancer, and the risk that medicine residues are licked by pets is reduced.

The invention provides a POCD treatment medicine composition with dendrobine delivered by a nano-carrier and application, and belongs to the technical field of medicine. The composition consists of dendrobine, a nano-carrier material and a stabilizer, wherein a nano-carrier is PLGA (poly (lactic-co-glycolic acid)) nanoparticles or lipidosome. The particle size of the composition is 50-150nm, the polydispersity index is less than 0.3, and the loading capacity of dendrobine is 5-15%. The invention also provides two preparation methods of the composition. The PLGA nanoparticles are prepared by adopting an emulsification-solvent evaporation method; the liposome is prepared by adopting a film hydration-ultrasonic extrusion method, and each process parameter is specifically limited. The pharmaceutical composition can significantly improve the brain targeting and bioavailability of dendrobine, and can be used for preparing drugs for preventing or treating postoperative cognitive impairment (POCD), and the administration route can be intravenous injection or nasal administration.

The invention discloses a preparation method of an organic-inorganic composite microcapsule as well as an obtained product and application of the organic-inorganic composite microcapsule. The preparation method comprises the following steps: firstly, preparing a MoS2-metal composite material by adopting pulse laser irradiation, mixing the MoS2-metal composite material, PAO5 oil, polysulfone and an organic solvent to obtain an organic phase, and dissolving lauryl sodium sulfate and polyvinyl alcohol in water to obtain a water phase; and mixing the organic phase and the water phase, and obtaining the microcapsule by adopting a solvent evaporation method. The method disclosed by the invention is simple to operate and low in cost, and the obtained microcapsule can automatically store a lubricant and has excellent tribological performance in the friction process.

The invention relates to the technical field of biomedical materials, and discloses an active composite membrane with an asymmetric double-layer structure as well as a preparation method and application of the active composite membrane. The active composite membrane with the asymmetric double-layer structure is prepared from the following preparation raw materials in percentage by mass: 95 to 98 percent of chitosan; 0.5%-2% of a plant polyphenol cross-linking agent; and 1%-4% of magnesium-based degradable inorganic filler. The active composite membrane has an integrated double-layer structure without interface bonding, the compact layer can effectively block soft tissues, and the porous layer is beneficial to cell adhesion and nutrition delivery; in a wet state, the material is excellent in mechanical property, controllable in degradation and high in cell safety, can effectively inhibit bacteria and promote osteoblast proliferation and differentiation, and can meet the performance requirements of bone defect repair on the material; the preparation method adopts the steps of solvent volatilization, freeze drying and precooled alkaline alcohol solution washing for preparation, the whole preparation process is carried out in a water phase, the conditions are mild, the steps are simple, complex equipment is not needed, and extremely high clinical transformation and industrialization potential is shown.

The invention relates to the technical field of lithium ion battery manufacturing, and discloses a preparation method of a silicon-containing silicon oxide-phenolic resin-artificial graphite composite negative electrode material, which comprises the following steps: grafting phytic acid on the surface of silicon-containing silicon oxide to construct a protonated acidic site, mixing modified silicon-containing silicon oxide, phenolic resin and artificial graphite, and keeping at a constant temperature to obtain the silicon-containing silicon oxide-phenolic resin-artificial graphite composite negative electrode material. Preferentially carrying out pre-polycondensation by utilizing phytic acid catalysis interface resin to form a gel layer, and rapidly removing a solvent to obtain a precursor; according to the preparation method disclosed by the invention, interface chemical anchoring is established before solvent volatilization by utilizing a dynamic competitive mechanism, so that the problem of stripping of resin and active particles caused by solvent volatilization in a traditional process is solved, and the structural stability and the electric conduction continuity of the material in a battery circulation process are improved.

The application provides an In-MOF crystal material and a preparation method and application thereof, and the molecular formula of the In-MOF crystal material is [In(phen)(BDC) 1.5 ]·H2O, wherein phen is 1,10-phenanthroline, and BDC is terephthalic acid ligand; the crystal belongs to a monoclinic crystal system P2 1 / n with a space group, and the cell parameters are alpha=90°, beta=97.774(2)°, gamma=90°, a=12.3359(3)Å, b=14.1993(4)Å, c=15.4995(4)Å, the cell volume is 2689.96(12)Å 3 , and Z=4. The application synthesizes an In-MOF crystal material by using a simple room temperature solvent evaporation method, and the In-MOF crystal material can be used as a catalyst for electrocatalytic carbon dioxide reduction, and realizes efficient carbon dioxide reduction to form formic acid.

The invention discloses a photonic crystal film capable of being cured at room temperature, the photonic crystal film is formed by curing core-shell nanoparticles at room temperature, and the core-shell nanoparticles are composed of polystyrene nanoparticles serving as a core layer and acrylate polymers serving as a shell layer. According to the photonic crystal film capable of being cured at room temperature, the preparation method and the preparation equipment thereof, the photonic crystal film has the characteristics of a photonic crystal periodic structure, compared with traditional colored paper, chemical dyes are not needed to dye the photonic crystal film in the preparation process, a dispersion medium of the emulsion is water, the photonic crystal film is environmentally friendly, traditional heating curing or ultraviolet curing is not needed, and the cost is low. System curing depends on shell layer melting in the solvent evaporation process to achieve the physical cross-linking effect, the hydrophilic property of an acrylate polymer in the system is utilized, the colored paper can be well attached to a substrate and is not prone to moving, and compared with traditional colored paper, the preparation method is simple, and cumbersome steps and large instruments are not needed.

This invention provides an organic ferroelectric eutectic material, its preparation method, and its applications, relating to the field of ferroelectric materials technology. The organic ferroelectric eutectic material constructs a crystal system with "rigid constraint and flexible adaptation coexisting, dipole order and controllable polarization synchronously" through "molecular selection-supramolecular assembly-crystal structure regulation," achieving a synergistic effect of high Curie temperature, strong polarization characteristics, and excellent flexibility. The preparation method of the organic ferroelectric eutectic material utilizes a simplified "solvent dissolution-solvent evaporation" process, leveraging the mediating effect of the solvent to promote the supramolecular self-assembly of donor and acceptor molecules. This achieves the preparation of an organic ferroelectric eutectic material possessing both high Curie temperature, strong polarization characteristics, and excellent flexibility. The preparation method has multiple advantages, including "stable process, low cost, and suitability for large-area processing," making it a simple, efficient, and universally applicable preparation method suitable for large-scale industrial production.

The application discloses a preparation method of a Zr-based metal-organic framework-based mixed matrix membrane, and relates to the field of gas separation membranes.The mixed matrix membrane is prepared by taking a defect-exchanged Zr-based metal-organic framework material as a filler and polyimide 6FDA-DAM as a polymer matrix.The application overcomes the defects of the prior art, and o-TBA-U iO is prepared by dispersing a defect state U iO-66 in an N,N-dimethylformamide solution of o-TBA (o-Tri-fluoromethyl benzoic acid) and then performing a heating reaction, followed by centrifugation, washing and drying in sequence.Then, the o-TBA-U iO is mixed with 6FDA-DAM in a chloroform solution, and a mixed matrix membrane is prepared by a solvent evaporation method.The application has the advantages and benefits that the MOF-based mixed matrix gas separation membrane has good C3H6 permeability and ultrahigh C3H6 / C3H8 ideal selectivity, and the main reason is that the introduction of o-Tri-fluoromethyl benzoic acid enhances the molecular sieving ability of the membrane for C3H6 / C3H8 and the preferential diffusion rate of C3H6.

The invention belongs to the technical field of biodegradable composite materials, and discloses a preparation method and application of a PVA-PLA (Polyvinyl Acetate-Poly Lactic Acid) multi-layer high-barrier film based on metal-phenolic network enhancement. The preparation method comprises the following steps: firstly, preparing a PVA (Polyvinyl Alcohol) composite solution containing lignin and a polyphenol compound, and carrying out film casting to obtain a base layer film; then preparing a PLA coating solution containing Femetal ions; and finally, immersing the base layer film into the PLA coating liquid, and constructing a multi-layer structure through solvent volatilization. The core of the invention is that a polyphenol compound in the base layer and Fe in the PLA layer are utilized to form a metal-phenolic aldehyde network coordination bond at an interface, and the metal-phenolic aldehyde network coordination bond is used as a molecular bridge, so that the interface bonding force between PVA and PLA is greatly enhanced, and the problem of interface layering caused by polarity difference between PVA and PLA is effectively solved. Meanwhile, due to the synergistic effect of the lignin and the polyphenol compound, the film is endowed with excellent oxygen, carbon dioxide and water vapor barrier properties and an antibacterial function. The film is green and safe, and is suitable for active packaging of food, especially fresh keeping of fruits and vegetables.

The application discloses a SERS detection structure for realizing rapid enrichment of detected molecules and a preparation method thereof, and relates to the technical field of molecule detection. The SERS detection structure for realizing rapid enrichment of detected molecules comprises a super-hydrophobic SERS unit and a heating resistor unit which are connected with each other. The heating resistor unit is used for heating the super-hydrophobic SERS unit to realize rapid enrichment of detected molecules. When the detected molecules are dropped on the surface of the super-hydrophobic SERS unit, the SERS detection structure can make the detected molecules be distributed in the form of droplets on the surface of the super-hydrophobic SERS unit. After the solvent is evaporated, the enrichment of the detected molecules can be realized, the detection uniformity is improved, and the detection limit is improved. In combination with the heating effect of the heating resistor unit, the evaporation speed of the droplets can be accelerated, the rapid enrichment of the detected molecules is realized, and the problem of low detection efficiency caused by too long evaporation time of the droplets is avoided. In addition, the detection structure is simple to prepare, does not need to depend on complex preparation steps, and the cost is reduced.

This invention relates to a method for ultra-high sensitivity and specific naked-eye detection of trace aromatic compounds. The method utilizes the long afterglow induced by the specific interaction between the analyte and a matrix as the output signal to achieve naked-eye detection of the analyte. The aromatic compounds are aromatic pollutants and aromatic organic metabolites. This invention utilizes the organic long afterglow induced by mixing the analyte G with the host molecule H through methods such as heating and melting, solvent evaporation and crystallization, matrix adsorption, and paper chromatography as a monitoring signal to achieve ultra-high sensitivity and specific naked-eye detection of trace aromatic compounds. The afterglow induced by the analyte G is highly dependent on the type and content of the analyte and matrix, which gives this detection method extremely high sensitivity and selectivity. The method is simple to operate, rapid, visible to the naked eye, requires inexpensive and readily available materials, and provides stable results.

The invention discloses a phosphorescence color adjustable metal-polynitrogen heterocyclic complex glass material and a preparation method thereof. According to the invention, a series of color-adjustable super-long RTP metal-polynitrogen heterocyclic complex glass materials are successfully prepared by taking metal halides and polynitrogen heterocyclic ligands as raw materials through a hydrothermal disturbance technology and a simple solvent evaporation method. The glass has high hardness and high transparency, the phosphorescence color can be adjusted from blue to yellow, and the excited state life of the glass is up to 186.7 ms. In addition, the method is simple, convenient, efficient and low in cost, and provides an innovative thought and approach for design and preparation of a novel room-temperature phosphorescent glass material.

The present application provides a kind of porous poly-L-lactic acid microspheres, and its preparation method and injection preparation comprising porous poly-L-lactic acid microspheres, the porous poly-L-lactic acid microspheres are prepared by emulsification-solvent evaporation method from first component, second component and optional auxiliary component, wherein the first component is poly-L-lactic acid, the second component is sodium carboxymethyl cellulose, the content of the first component is 98%-99.9% of the total mass of the first component and the second component, the content of the second component is 0.1%-2% of the total mass of the first component and the second component, and the porous poly-L-lactic acid microspheres have topological morphology.

The application discloses a high-flux strong-hydrophobic composite membrane and a preparation method thereof, and belongs to the field of membrane separation and technology.The method comprises the following steps: formulating a casting solution and a preparation method, wherein the casting solution comprises a binder and a certain graphite-based carbon material; the casting solution is prepared into a film through a vacuum-assisted solvent evaporation method; and the volatilization of a solvent in the binder and the adhesion between the binder and the graphite-based carbon material are promoted at 50-100 DEG C, so that a high-flux strong-hydrophobic microporous composite membrane is obtained.The method is simple, fast and green, and lays a foundation for industrial application of the high-flux strong-hydrophobic microporous composite membrane.

The application discloses a preparation method of isophorone diisocyanate microcapsules for oil well cement self-repairing, and relates to the technical field of external aid type self-repairing materials.The isophorone diisocyanate microcapsules are prepared by using isophorone diisocyanate as core material, using oligomers and crosslinking monomers as shell material raw materials, adopting a solvent evaporation-ultraviolet light synergistic polymerization process, and through low-temperature ultrasonic dispersion, cold water bath premixing and ultraviolet light polymerization under nitrogen protection.The isophorone diisocyanate microcapsules have high yield, high coating rate and dense shell.The method is simple, fast and environmentally friendly, and the prepared isophorone diisocyanate microcapsules have excellent thermal stability, substrate adaptability and self-repairing characteristics, and can realize the rapid self-repairing of oil well cement cracks in a high-temperature, high-pressure and humid environment.

This invention relates to a tetrafluoroborate imidazole-based metal ionic liquid, its preparation method, and its application in coating aluminum powder. The invention pertains to the preparation method of a tetrafluoroborate imidazole-based metal ionic liquid and its use in combination with aluminum powder to form a core-shell fuel (aluminum powder@metal ionic liquid). The aluminum powder@metal ionic liquid core-shell fuel uses aluminum as the core and a tetrafluoroborate imidazole-based metal ionic liquid as the shell material, prepared via solvent evaporation. This series of core-shell fuels exhibits excellent thermal properties and is primarily suitable for solid propellant fuel applications. Furthermore, the preparation method provided by this invention is simple, operates under mild conditions, and uses readily available raw materials.

The invention discloses difunctional nano drug-loaded eye drops for xerophthalmia and a preparation method of the difunctional nano drug-loaded eye drops, and belongs to the field of pharmaceutical preparation technologies and ophthalmology pharmacy. The core of the invention is to construct a composite nanoparticle which has a core-shell structure and has long-acting adhesion lubrication and targeted control drug release functions. The preparation method comprises the following steps: firstly, encapsulating a hydrophobic immunosuppressant such as cyclosporine A in a biodegradable pad polymer matrix such as polylactic acid-glycolic acid copolymer (PLGA) by an emulsification-solvent evaporation method to form a drug-loaded polymer nano core; through the exquisite integrated design of the structure and the function, collaborative targeted therapy of two core pathological links of'tear film instability 'and'immune inflammation' of xerophthalmia is achieved, the bioavailability of the medicine is remarkably improved, the medication frequency and eye irritation are reduced, and the curative effect of xerophthalmia is improved. A more efficient and safer administration scheme with better patient compliance is provided for clinical treatment of xerophthalmia.

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

The application provides a lithium phosphate-lanthanum phosphate composite coated lithium-rich manganese-based positive electrode material, and a method of adopting an ethanol-water mixed solvent evaporation drying combined with low-temperature sintering to uniformly construct a composite coating layer composed of ion conduction type lithium phosphate and inert stable type lanthanum phosphate on the surface of the lithium-rich manganese-based positive electrode material. The complementary function and the synergistic distribution in space of the lithium phosphate and the lanthanum phosphate together realize the comprehensive modification effect of "no reduction of ion transmission and effective inhibition of side reaction", effectively solve the key technical problems of low first coulomb efficiency, serious voltage attenuation in the cycle process and transition metal dissolution of the lithium-rich manganese-based positive electrode material, and meet the pursuit of people on the comprehensive performance of the high-energy-density lithium ion battery positive electrode material.

The invention provides a medical beauty-grade sensitive skin repair dressing with a gamma-polyglutamic acid controlled release function, and belongs to the technical field of biomedical materials. The repair dressing is composed of controlled release microspheres dispersed in a matrix material, the controlled release microspheres take modified gamma-polyglutamic acid as an active core material and a biocompatible high polymer material as a wall material, and the matrix material comprises a medical grade gel matrix, a moisturizing component and an anti-inflammatory soothing component. The gamma-polyglutamic acid is subjected to acylation or graft modification to improve the stability and biocompatibility of the gamma-polyglutamic acid, and 12-72h gradient release of the gamma-polyglutamic acid is realized by virtue of the controlled release microspheres prepared by virtue of an emulsification-crosslinking method or a solvent evaporation method; meanwhile, through the synergistic matching of the matrix components, the dressing is endowed with the moisturizing, anti-inflammatory and soothing effects. The dressing can effectively reduce wound inflammatory response after medical art, promote epidermal cell proliferation and improve the water content and barrier function of a sensitive skin cuticle, and is suitable for scenes of wound repair after medical art, sensitive skin barrier reconstruction and the like.

The application belongs to the field of piezoelectric photocatalytic reduction of carbon dioxide, and particularly relates to ReS2 / Ba 0.5 Sr 0.5 TiO3 composite catalyst and application of piezoelectric photocatalytic reduction of carbon dioxide. The application first prepares a gel precursor of Ba 0.5 Sr 0.5 TiO3, and calcines the gel precursor to obtain white Ba 0.5 Sr 0.5 TiO3. A black cocatalyst ReS2 is synthesized through a hydrothermal reaction, and finally, a ReS2 / Ba 0.5 Sr 0.5 TiO3 composite catalyst is prepared through mechanical stirring and solvent evaporation. The catalyst has more excellent piezoelectric photocatalytic performance and rich reaction active sites. When the catalyst is applied to piezoelectric photocatalytic reduction of carbon dioxide, it shows stable and excellent reduction capacity of carbon dioxide under the synergistic effect of light and ultrasound, and expands the application of Ba 0.5 Sr 0.5 TiO3 in the field of piezoelectric photocatalytic reduction of carbon dioxide.