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43results about How to "Good light-to-heat conversion effect" patented technology
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Ultra-small MoS2 nanosheet as well as preparation method and application thereof
InactiveCN106075438AImprove colloidal stabilityGood biocompatibilityEnergy modified materialsEchographic/ultrasound-imaging preparationsSulfurDistilled water
The invention discloses an ultra-small MoS2 nanosheet. The surface of the MoS2 nanosheet is modified with polyvinylpyrrolidone, and the diameter of the modified MoS2 nanosheet ranges from 15 nm to 25 nm. The invention further discloses a preparation method of the ultra-small MoS2 nanosheet. The preparation method comprises the following steps: a sulfur source and a molybdenum source are dissolved in water and stirred until the resources are completely dissolved; polyvinylpyrrolidone is dissolved in the solution of the sulfur source and the molybdenum source; the solution is transferred into a stainless steel reaction kettle with a polyphenyl lining for closed reaction, a reaction product is washed with an ethanolamine water solution and distilled water, and the ultra-small MoS2 nanosheet with the surface modified with polyvinylpyrrolidone is obtained. The invention further provides an application of the ultra-small MoS2 nanosheet as a photo-thermal conversion material. The ultra-small MoS2 nanosheet has good colloid stability, photo-thermal conversion capacity and photo-acoustic imaging capacity and has broad application prospect in the fields of tumor treatment and the like.
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
A WS2-PVP nanometer sheet, a preparing method thereof and applications of the nanometer sheet
InactiveCN106075439AConstrained growthControl shapeEnergy modified materialsGeneral/multifunctional contrast agentsPolymer dissolutionSolvent
A WS2-PVP nanometer sheet is provided. The surface of a WS2 nanometer sheet is modified with polyvinylpyrrolidone. The invention also provides a preparing method of the WS2-PVP nanometer sheet. The method includes dissolving a sulfur source and a tungsten source into a solvent, stirring to fully dissolve the sources, dissolving a polymer into the solution of the sulfur source and the tungsten source under stirring to obtain a mixed solution of the sulfur source, the tungsten source and the polymer, transferring the prepared solution to a stainless steel reaction kettle having a poly(p-phenylene) liner, reacting under a sealed condition for a certain period of time, centrifuging for separation, and cleaning the prepared product the is the two-dimensional WS2-PVP nanometer sheet the surface of which is modified with the polymer and which has good colloid stability. The invention also provides applications of the WS2-PVP nanometer sheet as a photo-thermal conversion material. The nanometer sheet has excellent photo-thermal conversion, computed tomography and photoacoustic imaging capabilities, and is expected to be used for efficient cooperative diagnosis and treatment for tumor.
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
Multi-functional stimuli sensitive polymer-gold nanocage carrier and preparation method thereof
InactiveCN104258391ALow toxicityRealize integrationEnergy modified materialsGenetic material ingredientsChemo therapyBiomedicine
The invention belongs to the field of high polymer chemistry and biomedical engineering, and particularly relates to a multi-functional stimuli sensitive polymer-gold nanocage carrier and a preparation method thereof. The multi-functional carrier has a nucleus-shell-crown structure formed by a nucleus, a shell and a crown; the nucleus is formed by polymeric micelles, the shell is formed by gold nanocages, and the crown is formed by methoxy polyethylene glycol-branched polyethylenimine-lipoic acid; and the nano-carrier has a good photothermal conversion effect on the condition of 808 nm. The carrier has low toxicity for cells and can bear not only drugs but also genes or nucleic acids, thereby achieving the integration of carrier positioning, chemotherapy, thermal therapy and gene therapy and having a wide application value.
Owner:SUN YAT SEN UNIV
Method for simultaneously preparing porous gold nano particles and hexagonal gold nano sheets
PendingCN109676153ASimple and fast operationMild experimental conditionsMaterial nanotechnologyTransportation and packagingSolid particleNano devices
The invention provides a method for simultaneously preparing porous gold nano particles and hexagonal gold nano sheets. The method comprises the following steps that poloxamer (F127) is added in ultrapure water, ultrasonic dispersion is conducted, and a transparent and clear micellar solution is formed; a chloroauric acid solution is added in the micellar solution, uniform stirring and mixing areconducted, a reaction precursor solution is formed, and obtained solid particles are the porous gold nano particles; and an ascorbic acid solution is used for reducing of the precursor solution, afterthe reaction is complete, centrifugal separation is conducted, washing is conducted, and the hexagonal gold nano sheets are obtained. The method has the advantages that operation is simple and convenient, experiment conditions are moderate, and experiment reagents are environment-friendly; the prepared porous gold nano particles have the large specific surface area and can be applied to the fieldof catalysis and medicine carrying; and the regular hexagon gold nano sheets have good absorption performance for near-infrared light and can be widely applied to the fields of nano devices, biomedicine, molecular recognition, photo-thermal therapy and the like.
Owner:WUHAN UNIV OF SCI & TECH
Graphene-based photothermal conversion material and preparation and application methods thereof
InactiveCN109455698AExcellent light-to-heat conversion characteristicsEfficient light-to-heat conversion efficiencyGeneral water supply conservationSeawater treatmentOrganic solventPhotothermal conversion
The invention provides a preparation method of a graphene-based photothermal conversion material. The preparation method of the graphene-based photothermal conversion material comprises performing hydrothermal reaction, solvothermal reaction and mixed solvothermal reaction on a single-layer graphene oxide dispersion; removing water and organic solvent, and performing high-temperature calcination and ozone treatment to obtain the graphene-based photothermal conversion material. The invention also provides the graphene-based photothermal conversion material prepared through the method and application thereof. The graphene-based photothermal conversion material can be applied to various photothermal conversion devices.
Owner:NANKAI UNIV
Preparation method and application of photo-thermal conversion hydrogel
The invention belongs to the field of polymer composite functional materials, and discloses a preparation method of photothermal conversion hydrogel, which comprises the following steps: (1) dispersing molybdenum dioxide in water to prepare a molybdenum dioxide dispersion liquid; (2) dissolving hectorite in water, then adding the molybdenum dioxide dispersion liquid obtained in the step (1), and uniformly mixing to obtain a mixed solution; (3) dissolving N-isopropylacrylamide in the mixed solution obtained in the step (2) in an ice bath and nitrogen atmosphere, then adding an initiator, a cross-linking agent and a co-initiator, and uniformly mixing to obtain a mixed prepolymer solution; and (4) injecting the mixed prepolymer solution obtained in the step (3) into a mold, and reacting at room temperature for 24 hours to obtain the hydrogel. The hydrogel prepared by the invention has a remarkable photothermal conversion effect, good light transmission and mechanical properties and excellent heating and cooling cycling stability, and has huge application potential in the fields of intelligent hydrogel drivers, remote light-operated micro-flow valves, photothermal physiotherapy sheets and the like.
Owner:ZHENGZHOU UNIV
Fe-based metal organic skeleton nanoparticles with function of near-infrared absorption, and preparation method of Fe-based metal organic skeleton nanoparticles
InactiveCN107216463ALarge specific surface areaUniform particle sizeEnergy modified materialsInorganic non-active ingredientsMetal-organic frameworkPotassium ferricyanide
The invention relates to Fe-based metal organic skeleton nanoparticles with a function of near-infrared absorption, and a preparation method of the Fe-based metal organic skeleton nanoparticles. The obtained Fe-based metal organic skeleton nanoparticles are characterized in that the nanoparticles belong to a porous structure material which is uniform in size and adjustable in scale and morphology and has larger specific surface area, remarkable near infrared absorption characteristic and good photothermal conversion effect. The preparation method comprises the steps of (1) sequentially adding a certain amount of a polyvinylpyrrolidone water solution and a certain amount of a hydrochloric acid solution into a potassium ferricyanide water solution under the stirring condition; (2) after 30min, placing a precursor solution obtained in the step (1) into a drying oven at the temperature of 40-100 DEG C for reacting for 24h; (3) carrying out high-speed centrifugal separation on a colloidal solution obtained in the step (2), and then carrying out ultrasonic cleaning to obtain the blue Fe-based metal organic skeleton nanoparticles. The obtained Fe-based metal organic skeleton nanoparticles have important potential application value in the aspects such as drug transport, diagnostic imaging, photothermal therapy and medicine controlled release.
Owner:UNIV OF JINAN
Assembling system for PEGMa modified MoOx and thermosensitive PNIPAM microgel and preparation method thereof
ActiveCN106310263AParticle size controllableEvenly distributedOrganic active ingredientsEnergy modified materialsChemical treatmentSide effect
The invention provides an assembling system for PEGMa modified MoOx and thermosensitive PNIPAM microgel and a preparation method thereof and relates to the assembling system for microgel and the preparation method thereof. The invention aims to solve the problems that the present photothermal conversion material is difficult to realize accurately controllable targeting release of the loaded drug and has toxic and side effects. The chemical formula of the system is PEGMa-MoOx / P(NIPAM-co-MAA). The method comprises the following steps: preparing PEGMa-MoOx and dissolving in deionized water; adding NIPAM, MAA, MBA and SDS and uniformly mixing; heating and introducing nitrogen; adding APS; and reacting and then centrifuging, washing, dialyzing and drying, thereby completing the preparation. The preparation method provided by the invention is simple and feasible, the cost is low, reaction conditions are mild, the operation is easy, the toxic and side effects are few, and the practicability is ultrahigh; the compound microgel can realize a targeting positioning function; and after a photo-thermal chemical treatment effect is achieved, the microgel can automatically degrade within 24h and can be discharged from the body.
Owner:黑龙江省工研院资产经营管理有限公司
Preparation method for polyamino acid/MoS2 nano-cluster and application
ActiveCN106890333AEliminate chemical modificationReduce usageEnergy modified materialsPharmaceutical non-active ingredientsDistilled waterEngineering
The invention provides a preparation method for a polyamino acid / MoS2 nano-cluster. The method comprises the following steps: simultaneously dissolving molybdenum source, sulfur source and polyamino acid in distilled water, wherein the concentration of the molybdenum source is 1-100mg / mL, the concentration of the sulfur source is 1-100mg / mL and the concentration of polyamino acid is 1-100mg / mL; uniformly stirring, and then transferring the acquired solution into a reaction kettle and performing sealing reaction for 12-24 hours at 150-250 DEG C; washing the acquired product with cholamine aqueous solution and distilled water, thereby acquiring the polyamino acid / MoS2 nano-cluster. The preparation method provided by the invention is simple in process; no toxic or harmful solvent is used; the product is easily acquired; the surface modification of the nano-cluster can be synchronously realized; the prepared polyamino acid / MoS2 nano-cluster has excellent colloidal stability, photo-thermal conversion performance and biocompatibility; the polyamino acid / MoS2 nano-cluster is expected to be further used for providing a new thought for a clinic tumor thermotherapy material.
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
Bone repair and tumor inhibition material with photothermal conversion performance and functional coating and preparation method thereof
ActiveCN111012948AGrowth inhibitionImprove mechanical propertiesPharmaceutical delivery mechanismTissue regenerationElectrophoresesPoly ether ether ketone
The invention provides a preparation method of a bone repair and tumor inhibition material with photothermal conversion performance and a functional coating and the material obtained by the method. The preparation method comprises the following process steps: (1) taking polyether-ether-ketone powder and conductive and photothermal conversion material powder as raw materials, uniformly mixing the two kinds of powder, and processing the formed mixed powder into a required shape, so as to obtain a matrix with conductivity and photothermal conversion performance; (2) grafting an active functionalgroup on the surface of the matrix with conductivity and photothermal conversion performance, then putting the matrix with the surface grafted with the active functional group as an electrode into a dispersion liquid, and forming a functional coating on the surface of the matrix through an electrophoresis technology, the dispersion liquid being composed of a liquid conductive medium, an osseointegration promoting substance and a dispersing agent; and (3) cleaning the material with the functional coating after electrophoresis with deionized water, and drying the material to remove water on thesurface, thereby obtaining the bone repair and tumor inhibition material with the photothermal conversion performance and the functional coating.
Owner:SICHUAN UNIV
Nanocapsules having core-shell structure and preparation method and application thereof
ActiveCN107625744AConstrained growthControl shapeOrganic active ingredientsMaterial nanotechnologyTreatment fieldSolvent
The invention provides nanocapsules having a core-shell structure, the nanocapsules are composed of WS2 nanocapsules, the inner part of the WS2 nanocapsules is coated with the Fe3O4 nano particles, and the surface of the WS2 nanocapsules is synchronously modified with a polymer through covalent combination. The invention also provides a preparation method of the nanocapsules having the core-shellstructure, which comprises the following steps: the polymer, a sulfur source, a tungsten source and an iron source are dispersed in a solvent, and the materials are stirred and completely dissolved toobtain a mixed solution; the obtained solution is transferred to a stainless steel reaction vessel having a para-position polyphenyl inner liner for reacting for a certain time in a sealed mode, andthen centrifugation and washing are carried out to obtain the product which is the Fe3O4@WS2-polymer nanocapsules having good colloid stability with the inner part coated with the nano particles and the surface modified with the polymer. The invention also provides an application of the nanocapsules having the core-shell structure as a photo-thermal conversion material. The nanocapsules have highphoto-thermal conversion capability, and can be used in the fields of efficient cooperative diagnosis and treatment for tumor.
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
Method for preparing paper-based folding actuator under stimulation of multiple physical fields
ActiveCN108755243AReversible recovery drives deformation responseSimple methodPaper coatingLaminationCelluloseConductive polymer
The invention relates to a method for preparing a paper-based folding actuator under stimulation of multiple physical fields. The method comprises the following steps: firstly, drawing the shape of the actuator by drawing a wax wall on cellulose paper; then, adding dropwise a conductive polymer PEDOT:PSS solution, and performing drying at room temperature with the help of an organic glass plate toprepare a PEDOT:PSS / cellulose paper-based composite; adding dropwise a Fe3O4 nanoparticle suspension onto the PEDOT:PSS / cellulose paper-based composite, performing drying at room temperature with thehelp of the organic glass plate, and taking down the paper-based composite to prepare a Fe3O4 / PEDOT: PSS / cellulose paper-based composite; cutting the Fe3O4 / PEDOT: PSS / cellulose paper-based compositealong a wax wall pattern according to design requirements of folding deformation, and pasting a transparent adhesive tape one side to prepare the flexible Fe3O4 / PEDOT:PSS / cellulose paper-based composite folding actuator. The method is relatively simple, and reversibly recoverable actuating deformation response can be produced under simulation of wet-heat-light-electricity-magnetism physical fields.
Owner:XI AN JIAOTONG UNIV
Eggshell membrane/silver nanoparticle/graphene oxide composite biological membrane and preparation method
ActiveCN111595043AExcellent photothermal performanceEffective absorptionSolar heating energyAbsorbing elementsEggshell membraneLight energy
The invention belongs to the technical field of photothermal conversion materials, and discloses an eggshell membrane / silver nanoparticle / graphene oxide composite biological membrane and a preparationmethod. A waste eggshell membrane is used as a carrier material, and silver nanoparticles with a photothermal conversion effect and graphene oxide are assembled together to prepare the biomass membrane with synergistically enhanced photothermal conversion performance. The preparation method comprises the following steps: preparing anisotropic silver nanoparticles with different LSPR properties bytaking silver nitrate as a precursor; loading the anisotropic silver nanoparticles onto the eggshell membrane by a self-assembly method; and loading graphene oxide nanosheets on the eggshell membranein an impregnation self-assembly manner. According to the technical scheme, the enhanced photothermal effect of the eggshell membrane loaded with the two functional nano materials is realized. The LSPR property of the silver nanoparticles can be effectively regulated and controlled through the morphology of the silver nanoparticles, and then the effective absorption and photothermal conversion ofthe eggshell membrane loaded with the silver nanoparticles on light energy of different wave bands are regulated and controlled.
Owner:WUHAN TEXTILE UNIV
W18O49-tirapazamine composite nano-particle, and preparation method and application thereof
ActiveCN108126198AIncreased hypoxic areaHigh activityEnergy modified materialsPharmaceutical non-active ingredientsTherapeutic effectNanotechnology
The invention discloses a W18O49-tirapazamine composite nano-particle. The composite nano-particle adopts PEG-PCL as a carrier, and the internal of the PEG-PCL is loaded with W18O49 and tirapazamine;the W18O49 loading capacity is 2.99%, and the of and tirapazamine loading capacity is 1.29%; and the composite nano-particle is a dispersed spherical structure, and the particle size of the compositenano-particle is 60-100 nm. The composite nano-particle can improve the TPZ treatment effect.
Owner:NANJING DRUM TOWER HOSPITAL +2
Preparation method and application of three-dimensional polydopamine
ActiveCN112341623AUniform methodSimple methodEnergy modified materialsAntineoplastic agentsIron saltsAlcohol
The invention relates to a preparation method and application of three-dimensional polydopamine, and belongs to the technical field of functional materials. According to the preparation method, dopamine hydrochloride and metal iron salt are used as raw materials, and the three-dimensional polydopamine is prepared by utilizing a self-polymerization and self-assembly. The three-dimensional polydopamine prepared by the method has the advantages of simple method, adjustable size and morphology and the like, and the requirement of environmental protection is met by taking a common water / alcohol system as a reaction solvent. The preparation method of the three-dimensional polydopamine material provided by the invention can promote further development of related research of polydopamine. The three-dimensional polydopamine prepared by the method disclosed by the invention has an excellent photo-thermal conversion effect, and compared with traditional optical materials, the material shows excellent biocompatibility and photo-thermal conversion rate, and plays a role in promoting the research of a photo-thermal agent. The three-dimensional polydopamine material prepared by the method can beused for photothermal therapy of tumors, so that the three-dimensional polydopamine material has a good medical application prospect.
Owner:TSINGHUA UNIV
Multi-functional photo-thermal nano bactericidal material and preparation and application thereof
ActiveCN114053406AHarm reductionGood light-to-heat conversion effectAntibacterial agentsPowder deliveryFunctional monomerNanoparticle
The invention relates to a multi-functional photo-thermal nano bactericidal material as well as preparation and application thereof, and belongs to the field of antibacterial materials. The invention aims to prepare a multi-functional photo-thermal sterilization material capable of specifically adsorbing endotoxin. Polydopamine nanoparticles M-PDA capable of selectively adsorbing endotoxin are prepared by taking dopamine as a functional monomer and endotoxin as a template molecule and adopting a reversed-phase microemulsion method, so that bacteria can be efficiently killed by utilizing photothermal conversion, the endotoxin released by G-bacteria can be effectively adsorbed, and secondary damage caused by the endotoxin in photothermal sterilization is reduced. According to the invention, an inverse emulsion polymerization method is utilized for the first time to prepare a multi-functional photo-thermal sterilization material, and polydopamine nanoparticles capable of rapidly killing bacteria under the irradiation of near-infrared light and selectively adsorbing endotoxin are prepared.
Owner:HUAZHONG UNIV OF SCI & TECH
A photothermally enhanced supercapacitor electrode material and preparation method thereof
ActiveCN113299491BLarge specific surface areaGood flexibilityHybrid capacitor electrodesCopper sulfidesChemical reactionThiourea
Owner:CENT SOUTH UNIV
A kind of assembly system and preparation method of pegma-modified moox and thermosensitive pnipam microgel
ActiveCN106310263BParticle size controllableEvenly distributedOrganic active ingredientsEnergy modified materialsChemical treatmentSide effect
The invention provides an assembling system for PEGMa modified MoOx and thermosensitive PNIPAM microgel and a preparation method thereof and relates to the assembling system for microgel and the preparation method thereof. The invention aims to solve the problems that the present photothermal conversion material is difficult to realize accurately controllable targeting release of the loaded drug and has toxic and side effects. The chemical formula of the system is PEGMa-MoOx / P(NIPAM-co-MAA). The method comprises the following steps: preparing PEGMa-MoOx and dissolving in deionized water; adding NIPAM, MAA, MBA and SDS and uniformly mixing; heating and introducing nitrogen; adding APS; and reacting and then centrifuging, washing, dialyzing and drying, thereby completing the preparation. The preparation method provided by the invention is simple and feasible, the cost is low, reaction conditions are mild, the operation is easy, the toxic and side effects are few, and the practicability is ultrahigh; the compound microgel can realize a targeting positioning function; and after a photo-thermal chemical treatment effect is achieved, the microgel can automatically degrade within 24h and can be discharged from the body.
Owner:黑龙江省工研院资产经营管理有限公司
Ultra-small-size copper sulfide nano-particles as well as preparation method and application thereof
ActiveCN114404587AGood light responseGood electron transport propertiesAntibacterial agentsEnergy modified materialsCopper sulfidePhotochemistry
The invention relates to ultra-small-size copper sulfide nano-particles as well as a preparation method and application of the ultra-small-size copper sulfide nano-particles. The copper sulfide nanoparticles are synthesized by adopting the copper ion-doped carbon quantum dots, and the synthesized copper ion-doped carbon quantum dots have more excellent photoresponse and electron transmission effects. The prepared ultra-small-size copper sulphide nano-particles overcome the obstruction of extremely poor water solubility in application of copper sulphide nano-materials, and can show good solubility and long-term stability when water is used as a solvent. The water-soluble stable ultra-small-size copper sulphide nanoparticles prepared by the preparation method disclosed by the invention show an excellent photothermal conversion effect under the irradiation of near-infrared laser, the preparation process is simple and rapid, and the requirements on instruments and equipment are relatively low.
Owner:SHANDONG UNIV
Preparation method of photo-thermal super-hydrophobic deicing coating
PendingCN114702863AReduce adhesionAvoid accumulationOther chemical processesPretreated surfacesCoated surfaceAqueous droplet
The invention discloses a preparation method of a photo-thermal super-hydrophobic deicing coating. The preparation method comprises the following steps: 1, pretreating an aluminum sheet, namely polishing by using abrasive paper to remove a non-uniform oxide layer on the surface of the aluminum sheet; 2, dropwise adding the polytetrafluoroethylene suspension liquid into a beaker containing an amyl acetate solvent, and carrying out ultrasonic treatment for 5-10 minutes to uniformly mix the polytetrafluoroethylene suspension liquid and the amyl acetate solvent; the mass ratio of the polytetrafluoroethylene suspension to the amyl acetate is 1: (1-2); 3, sequentially adding Prussian blue and hydrophobic silicon dioxide into the beaker, and stirring for 6-24 hours to complete the preparation of a precursor solution; the content of the prussian blue and the content of the hydrophobic silicon dioxide are 1-5% of the total mass of the polytetrafluoroethylene suspension and the amyl acetate respectively; fourthly, the precursor solution is sprayed to the surface of the pretreated aluminum sheet, drying is conducted for 1 h at the temperature of 100-150 DEG C, the adhesive force between water drops or wet snow and ice and the surface is reduced through the extremely small dynamic rolling angle of the surface of the coating, and therefore the water drops or the ice can easily fall off under the action of external force such as self gravity or wind power, and accumulation of rain, snow and ice on the surface is delayed or even prevented.
Owner:JIANGSU UNIV OF TECH
Preparation method of tungsten disulfide nanosheet modified cadmium sulfide photocatalyst
PendingCN114768832APlay the role of thermal strippingGood LSPR effectPhysical/chemical process catalystsHydrogen productionHeterojunctionPhotocatalytic water splitting
The invention discloses a preparation method of a tungsten disulfide nanosheet modified cadmium sulfide photocatalyst, and relates to the field of a transition metal sulfide nano heterojunction preparation method and hydrogen production by photocatalytic water splitting. The technical problems that an existing CdS-based photocatalyst is serious in photo-corrosion problem and low in solar energy conversion efficiency are solved. The preparation method comprises the following steps: firstly, preparing a cadmium sulfide nanorod with good visible light absorption capacity by adopting a hydrothermal method, then pyrolyzing dicyandiamide at high temperature and high pressure by adopting a calcining method, providing an alkaline atmosphere, and preparing the dark green photocatalyst by taking the CdS nanorod as a sulfur source and ammonium metatungstate as a tungsten source. In the preparation process, alkaline gas released by thermal decomposition of dicyandiamide can play a role in stripping tungsten disulfide nanosheets and promote generation of 1T-phase tungsten disulfide. The tungsten disulfide nanosheet modified cadmium sulfide photocatalyst prepared by the invention is applied to the field of photocatalytic hydrogen production.
Owner:HARBIN INST OF TECH
A kind of ultra-small mos2 nanosheet and its preparation method and application
InactiveCN106075438BImprove colloidal stabilityGood biocompatibilityEnergy modified materialsEchographic/ultrasound-imaging preparationsSulfurDistilled water
The invention discloses an ultra-small MoS2 nanosheet. The surface of the MoS2 nanosheet is modified with polyvinylpyrrolidone, and the diameter of the modified MoS2 nanosheet ranges from 15 nm to 25 nm. The invention further discloses a preparation method of the ultra-small MoS2 nanosheet. The preparation method comprises the following steps: a sulfur source and a molybdenum source are dissolved in water and stirred until the resources are completely dissolved; polyvinylpyrrolidone is dissolved in the solution of the sulfur source and the molybdenum source; the solution is transferred into a stainless steel reaction kettle with a polyphenyl lining for closed reaction, a reaction product is washed with an ethanolamine water solution and distilled water, and the ultra-small MoS2 nanosheet with the surface modified with polyvinylpyrrolidone is obtained. The invention further provides an application of the ultra-small MoS2 nanosheet as a photo-thermal conversion material. The ultra-small MoS2 nanosheet has good colloid stability, photo-thermal conversion capacity and photo-acoustic imaging capacity and has broad application prospect in the fields of tumor treatment and the like.
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
A polyamino acid/mos 2 Preparation methods and applications of nanoclusters
ActiveCN106890333BEliminate chemical modificationReduce usageEnergy modified materialsPharmaceutical non-active ingredientsDistilled waterBiocompatibility
The invention provides a preparation method for a polyamino acid / MoS2 nano-cluster. The method comprises the following steps: simultaneously dissolving molybdenum source, sulfur source and polyamino acid in distilled water, wherein the concentration of the molybdenum source is 1-100mg / mL, the concentration of the sulfur source is 1-100mg / mL and the concentration of polyamino acid is 1-100mg / mL; uniformly stirring, and then transferring the acquired solution into a reaction kettle and performing sealing reaction for 12-24 hours at 150-250 DEG C; washing the acquired product with cholamine aqueous solution and distilled water, thereby acquiring the polyamino acid / MoS2 nano-cluster. The preparation method provided by the invention is simple in process; no toxic or harmful solvent is used; the product is easily acquired; the surface modification of the nano-cluster can be synchronously realized; the prepared polyamino acid / MoS2 nano-cluster has excellent colloidal stability, photo-thermal conversion performance and biocompatibility; the polyamino acid / MoS2 nano-cluster is expected to be further used for providing a new thought for a clinic tumor thermotherapy material.
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
Graphene enhanced photo-thermal evaporation membrane, membrane assembly and sewage concentration treatment device
PendingCN113975978AHuge specific surface areaHigh specific surface areaMembranesSeawater treatmentPhotothermal conversionPore diameter
The invention provides a graphene enhanced photo-thermal evaporation membrane, a membrane assembly and a sewage concentration treatment device. The graphene enhanced photo-thermal evaporation film is a hollow fiber film, graphene of a two-dimensional sheet structure is evenly distributed on the inner surface, the outer surface and the section of the photo-thermal evaporation film, the photo-thermal evaporation film is of a gradient ordered pore structure, the pore diameter of the photo-thermal evaporation film is decreased from the inner surface to the outer surface, and the average pore diameter of the photo-thermal evaporation film is less than 30 nm. Graphene with high strength, excellent hydrophobic property, photothermal conversion and heat-conducting property is used as a raw material, preparation of a photothermal modified material is realized through a one-step method, and a sewage concentration treatment device with high specific surface area and efficient photothermal conversion is designed, so that efficient solar energy driven photothermal evaporation concentration is realized.
Owner:江苏巨之澜科技有限公司
A tetragonal phase (nh 4 ) 2 v 3 o 8 Preparation method of nanosheet and its application
ActiveCN110065968BSimple methodImprove accessibilityEnergy modified materialsVanadium compoundsSolventVanadium atom
The invention discloses a tetragonal phase (NH 4 ) 2 V 3 o 8 The preparation method and application of nanosheets, using deionized water as a solvent, adding a vanadium source and a reducing agent at a ratio of 1: (4-8) to obtain a mixed solution B, and reacting the mixed solution B in a normal atmospheric environment , through three stages of heating, holding and cooling, a pure tetragonal phase (NH 4 ) 2 V 3 o 8 Nanosheets. The invention avoids high temperature and time consumption, and does not need complex equipment. The process is simple, efficient, and repeatable, and does not involve harmful reagents, and is safe and harmless to human body.
Owner:SHAANXI UNIV OF SCI & TECH
Bone repair and tumor suppression material with photothermal conversion performance and functional coating and preparation method
ActiveCN111012948BGrowth inhibitionImprove mechanical propertiesPharmaceutical delivery mechanismTissue regenerationElectrophoresesPoly ether ether ketone
The invention provides a preparation method of a bone repair and tumor suppression material with photothermal conversion performance and functional coating and the material obtained by the method. The process steps of the preparation method: (1) use polyetheretherketone powder and conductive and light-to-heat conversion material powder as raw materials, mix the two powders evenly and form the mixed powder into the desired shape, that is, to obtain a matrix with electrical conductivity and light-to-heat conversion properties; (2) in the case of The performance of the matrix surface is grafted with active functional groups, and then the matrix with active functional groups grafted on the surface is placed in the dispersion liquid as an electrode, and a functional coating is formed on the surface of the matrix by electrophoresis technology. The dispersion liquid consists of liquid Conductive medium, osseointegration-promoting substance and dispersant; (3) After the electrophoresis is completed, the material with a functional coating is washed with deionized water and then dried to remove the water on the surface to obtain a photothermal conversion performance and a functional coating. Materials for bone repair and tumor suppression.
Owner:SICHUAN UNIV
Preparation method of ultrathin nanosheet semiconductor material
ActiveCN103896222BOvercome uncontrollable defectsReduce outputMaterial nanotechnologyEnergy inputSemiconductor materialsOrganic solvent
The invention provides an ultrathin nanosheet semiconductor material and a preparation method and application thereof. The preparation method comprises the following steps: heating a first organic solvent with high boiling point to obtain a first solution; heating to dissolve a precursor source AnBm of an A and a precursor source RjVk of an R in a second organic solvent with high boiling point to obtain a second solution; and mixing the first solution and the second solution, and heating with stirring to obtain the ultrathin nanosheet semiconductor material. The invention has the advantages of simple preparation process, good repeatability and strong controllability; the prepared nanometer material has thickness of 1-50 nm and an ultrathin nanosheet structure; and the ultrathin nanosheet semiconductor material prepared by the invention has photothermal conversion effect, and can be used as a novel photothermal conversion material in a solar cell or a solar energy collection device.
Owner:UNIV OF SCI & TECH OF CHINA
A kind of anti-icing nano coating on the surface of UHV line in mountainous area and its preparation method
ActiveCN105368315BReduce adhesionRoll down quicklyAntifouling/underwater paintsOther chemical processesCarbon nanotubeSolvent
The invention provides an anti-icing nano-coating for an extra-high voltage line surface in mountain areas. The coating includes the following raw materials by weight: 30-50 parts of fluorosilicone resin, 2-5 parts of carbon nanotubes, 2-5 parts of nano Ni, 6-8 parts of diamond carbon, 5-8 parts of a light absorbing pigment, 4-6 parts of nano TiO2, 8-12 parts of nano SiO2, 0.5-1 part of an emulsifier, 0.5-1 part of a defoaming agent, 0.3-1 part of a leveling agent, 1-2 parts of a silane coupling agent, 1-2 parts of a preservative, and 20-30 parts of a solvent. The anti-icing coating has the advantages of water contact angle of 131-169 DEG, strong hardness and wear resistance, and high absorptivity rate and low emission rate.
Owner:STATE GRID HENAN ELECTRIC ZHOUKOU POWER SUPPLY +1
A kind of core shell structure nanocapsule and its preparation method and application
ActiveCN107625744BConstrained growthControl shapeMaterial nanotechnologyOrganic active ingredientsCentrifugationSulfur
Owner:UNIV OF SHANGHAI FOR SCI & TECH +1
Preparation method and application of a photothermal conversion hydrogel
The invention belongs to the field of polymer composite functional materials, and discloses a method for preparing a photothermal conversion hydrogel, comprising the following steps: (1) dispersing molybdenum dioxide in water to prepare a molybdenum dioxide dispersion; (2) dissolving Dissolve hectorite in water, then add the molybdenum dioxide dispersion in step (1), mix well to obtain a mixed solution; (3) dissolve N-isopropylacrylamide in step ( 2) into the mixed solution, then add the initiator, cross-linking agent and co-initiator, mix well to obtain the mixed pre-polymerization liquid; (4) inject the mixed pre-polymerization liquid in step (3) into the mold, and react at room temperature for 24 hours , to obtain a hydrogel. The hydrogel prepared by the present invention has remarkable light-to-heat conversion effect, good light transmittance and mechanical properties, and excellent stability in heating and cooling cycles. There is great application potential in other fields.
Owner:ZHENGZHOU UNIV
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