88results about How to "High photothermal conversion efficiency" patented technology

The invention discloses multifunctional hydrogel for promoting healing of diabetic wounds and a preparation method of the multifunctional hydrogel. The multifunctional hydrogel is prepared from Ti3C2Tx-Ag, paeoniflorin (PF), a gel matrix oxidized konjac glucomannan (OKGM) solution and carboxymethyl chitosan (CMCS). The method comprises the following steps: mixing Ti3C2Tx powder with AgNO3 in deionized water, heating to boiling, adding a proper amount of a sodium citrate solution, reacting to obtain Ti3C2Tx-Ag (TA) powder, and mixing the powder with a paeoniflorin (PF) and oxidized konjac glucomannan (OKGM) solution and a carboxymethyl chitosan (CMCS) solution to prepare the KC-PF-TA hydrogel. The multifunctional hydrogel has excellent photo-thermal antibacterial performance, anti-inflammatory performance and angiogenesis promoting performance, shows a remarkable effect of promoting healing of diabetic wounds through the synergistic effect of Ti3C2Tx-Ag and paeoniflorin, and has good biocompatibility; the multifunctional nano-composite hydrogel disclosed by the invention has great application prospect and value in the field of wound repair materials.

The invention relates to aramid nanofiber-based carbonaceous aerogel and a preparation method thereof. The preparation method comprises the following steps: dispersing aramid fibers in an alkali solution, and washing with deionized water to obtain an aramid fiber dispersion liquid; performing vacuum filtration on the aramid fiber dispersion liquid, and performing freeze drying to obtain aramid fiber nanofiber aerogel; the aramid fiber nanofiber aerogel is subjected to carbonization treatment, and the aramid fiber nanofiber based carbonaceous aerogel is prepared. According to the preparation method disclosed by the invention, the highest evaporation rate of the obtained aramid nanofiber-based carbonaceous aerogel can reach 3.42 Kg / m < 2 > h by regulating and controlling the hydrolysis degree of the aramid fibers and combining vacuum suction filtration, and the aramid nanofiber-based carbonaceous aerogel has a good evaporation effect; in actual use, hydrophobic treatment is carried out on the upper surface of aerogel, and the defect that the photo-thermal evaporation effect of a product is reduced due to the fact that an open water layer is generated at a gas-liquid interface in the use process is effectively overcome.

The invention provides an aza-BODIPY dye molecule with near-infrared two-region absorption, 4-cyanophenyl is used as an electron acceptor for modification at 1, 7 sites, thiophene-triphenylamine is used as a strong electron donor for modification at 3, 5 sites, an aza-BODIPY dye with extremely strong intramolecular charge transfer is constructed, the absorption spectrum of the aza-BODIPY dye is extended to 1100 nm, and after the aza-BODIPY dye molecule forms an aggregation state, the absorption spectrum of the aza-BODIPY dye molecule has strong absorption spectrum. The aza-BODIPY dye molecule has the advantages that the absorption spectrum of the aza-BODIPY dye molecule is extended to 1250nm, the aza-BODIPY dye molecule has good absorption in an NIR-II region, and the nano-particles prepared by self-assembling the aza-BODIPY dye molecule and the amphiphilic polymer F127 show 46.2% of high photothermal conversion efficiency under the excitation of 1060nm laser, can be used for photoacoustic imaging and photothermal therapy, and can be used for preparing the nano-particles. The problems that tissue penetrability is insufficient and deep tumors cannot be diagnosed and treated in traditional tumor light diagnosis and treatment are solved.

The invention discloses a photo-thermal and thermal response release antibacterial film as well as a preparation method and application thereof, and belongs to the technical field of functional packaging. The photo-thermal and thermal response release antibacterial film is prepared by compounding a substance with photo-thermal conversion performance and a natural plant essential oil clathrate compound into a film forming base material, so that the combination of contact type sterilization and release type sterilization is realized; according to the antibacterial film, light with specific wavelength can be adopted to irradiate the film in the early storage stage of food, so that the film is rapidly heated, most microorganisms on the food are killed at proper temperature, meanwhile, the speed of diffusion of essential oil from an inclusion compound is increased under the driving of thermal power, and the release rate is greatly increased; therefore, the effect of double sterilization is achieved through release type and contact type synergistic sterilization; the advantages of the two sterilization modes are fully utilized, the problems existing in the two sterilization modes are solved, and the antibacterial efficiency of the film is greatly improved.

The invention relates to the technical field of drying, and discloses a solar heat collection tube heating and drying device and a tube row manufacturing method thereof.The solar heat collection tube heating and drying device comprises a first rack, and a first heat collection module is arranged on an inclined mounting platform formed by a first-stage step and a second-stage step of the first rack; a drying cavity defined by first steel plates is installed on the outer wall of the three-stage step of the first rack, and a first partition plate is arranged in the drying cavity. A second partition is arranged on the top surface of the first partition, a third partition is arranged on the side wall of the second partition, and an air delivery pipe is arranged between the third partition and the first partition; an air inlet shutter is mounted on the first steel plate, a fan opposite to the air inlet shutter is mounted on the second partition plate, and an exhaust shutter is mounted on the first steel plate; a supporting beam located above the third partition plate is arranged on the first rack, a footstand is arranged on the supporting beam, and a drying bin used for drying corn is placed on the footstand; according to the device, the solar energy utilization rate is increased through the heat collection structure, heat collection and drying chambers are reasonably partitioned, the airflow circulation path is clear, and stable drying of corn is achieved.

The invention discloses a multi-spectral-band compatible stealth coating based on a high-entropy alloy and a preparation method of the multi-spectral-band compatible stealth coating, and belongs to the technical field of functional high-entropy alloy coatings and preparation of the functional high-entropy alloy coatings. The problem that the visible light and infrared stealth effect of an existing stealth coating in a wide spectrum range is poor is solved. According to the preparation method, the high-entropy alloy film is prepared through the magnetron sputtering technology, efficient customization of material components and structures is achieved through scientific screening and optimal combination of elements and regulation and control of magnetron sputtering parameters, and therefore the high-entropy alloy film which is uniform, compact and excellent in performance is obtained. Test results show that the visible light band absorptivity of the high-entropy alloy coating is about 0.95, the infrared band emissivity of the high-entropy alloy coating is about 0.05, and multi-spectrum-band compatible stealth in the visible light and infrared spectrum range is achieved.

The invention belongs to the technical field of phase-change materials, and particularly relates to a long-term stable supercooling solar phase-change heat storage material capable of controlling electric trigger heat emission and a preparation method of the long-term stable supercooling solar phase-change heat storage material. The phase change heat storage material is composed of hydrogel serving as a framework material, hydrated salt fixed in a hydrogel framework through physical and chemical connection, a stably dispersed photo-thermal agent and an electrode embedded in the material. According to the invention, the spontaneous fluctuating effect of hydrated salt is obviously inhibited to reach a critical dimension and trigger crystallization, the long-term stable supercooled state of the material in a wide temperature range is realized, and by adjusting the proportion of the components, not only is the phase separation of the material effectively prevented, but also the photo-thermal conversion efficiency of the material can be obviously improved.

The invention discloses an application of an Mxene-Mo4VC4 new member nano platform with light-enhanced peroxidase activity in treatment of methicillin-resistant staphylococcus aureus infection so as to promote healing of infected wounds, and belongs to the field of two-dimensional nano material catalyst antibacterial research. The single-layer Mo4VC4 nanosheet is synthesized on the basis of Mo4AlVC4-MXene through a hydrofluoric acid etching method. The Mo4VC4 nanosheet shows activity similar to peroxidase, and can locally catalyze low-concentration hydrogen peroxide and generate hydroxyl radicals toxic to bacteria, so that methicillin-resistant staphylococcus aureus is effectively killed, and a biological membrane is removed. In addition, high photo-thermal conversion efficiency and photo-thermal stability are shown under irradiation of near-infrared light with low concentration (50 mu g / mL). The similar peroxidase activity is obviously amplified by the temperature rise caused by the photothermal effect of the Mo4VC4 nanosheet. And finally, rapidly eliminating methicillin-resistant staphylococcus aureus in deep infection and accelerating abscess regression by adopting a satisfactory photo-thermal amplification peroxidase strategy.

The invention discloses a covalent bond reinforced and toughened graphene oxide composite membrane as well as a preparation method and application of the covalent bond reinforced and toughened graphene oxide composite membrane, an aqueous solution of sulfosuccinic acid (SSA) and a single-layer graphene oxide (GO) aqueous-phase dispersion liquid are orderly assembled into a graphene oxide composite membrane with a layered structure, and then a certain amount of hydrochloric acid is used for acidification to obtain the covalent bond reinforced and toughened graphene oxide composite membrane. GO and SSA are subjected to covalent bond cross-linking under the heating condition, the covalent bond cross-linked GO-SSA graphene oxide composite film can be obtained, and the maximum strength and toughness of the covalent bond cross-linked GO-SSA graphene oxide composite film are improved by about 3 times and 4 times respectively compared with those before modification. In addition, due to the fact that graphene oxide has excellent photo-thermal performance, the GO-SSA graphene oxide composite film can also be applied to a substrate of a solar water evaporator device. The water evaporation rate of the pure GO thin film under irradiation of one sunlight intensity is 1.65 kg.m <-2 >. H <-1 >, and the water evaporation rate of the GO-SSA graphene oxide composite film can be maximally increased to 2.11 kg.m <-2 >. H <-1 >. The material has a wide application prospect in the field of solar water distillation.

The invention relates to the technical field of multifunctional super-hydrophobic materials, in particular to a photo-thermal super-hydrophobic anti-icing and deicing composite material based on a template collaborative ablation method, a preparation method of the photo-thermal super-hydrophobic anti-icing and deicing composite material and a photo-thermal super-hydrophobic anti-icing and deicing surface. The method comprises the following steps: uniformly dispersing photo-thermal nano-particles as a filler in a high-molecular polymer, forming a film with a micro-pit structure by using abrasive paper as a template through a pouring and curing film forming method, and forming nano-wrinkles or nano-particles similar to synapses on the micro-pit structure of the film through flame ablation treatment. The prepared photo-thermal super-hydrophobic anti-icing and deicing composite material based on the template collaborative ablation method has excellent photo-thermal and hydrophobic performance, can be used as a photo-thermal super-hydrophobic anti-icing and deicing surface, and is simple in preparation process, low in preparation cost and suitable for large-scale production.

The invention provides an aerogel material with nano defect MOF-801 loaded on the surface of calcium alginate as well as a preparation method and application of the aerogel material. The preparation method of the aerogel comprises the following steps: adding zirconium oxychloride octahydrate into a formic acid / water mixed solution to form a homogeneous solution, then adding fumaric acid into the homogeneous solution, reacting for a period of time at room temperature, centrifuging the obtained product, washing with water and ethanol, and drying to obtain MOF-801-G; the preparation method comprises the following steps: stirring and mixing MOF-801-G, a photo-thermal material polypyrrole (PPy), sodium alginate and water to obtain a uniformly dispersed solution, pouring the uniform solution into different molds, carrying out freeze drying to obtain PPy / MOF-801-G / SA (PMS) aerogel, immersing the PMS aerogel into a CaCl2 solution, carrying out crosslinking, and carrying out freeze drying to obtain the PPy / MOF-801-G / CA (PMC) aerogel. The atmospheric water-collecting aerogel material disclosed by the invention has excellent water absorption performance and photothermal conversion efficiency, and can be used for collecting clean water meeting the drinking water quality standard of the World Health Organization (WHO) in practical application.

The invention belongs to the technical field of photo-thermal water and power cogeneration, and particularly relates to a preparation method of super-hydrophilic photo-thermal carbon fiber cloth and a water photovoltaic power generation sheet. The preparation method comprises the following steps: dispersing photo-thermal conversion particles into a sodium dodecylbenzene sulfonate solution to obtain a photo-thermal conversion coating, soaking carbon fiber cloth into the photo-thermal conversion coating to enable the photo-thermal conversion particles to be attached to the carbon fiber cloth to obtain the photo-thermal carbon fiber cloth, and drying the photo-thermal carbon fiber cloth to obtain the photo-thermal carbon fiber cloth. And then the surface of the photo-thermal carbon fiber cloth is coated with a thermoplastic polyurethane solution to improve the hydrophilic property of the photo-thermal carbon fiber cloth, and therefore the super-hydrophilic carbon fiber cloth with the high photo-thermal conversion performance is prepared. In the photo-thermal evaporation process, different photo-thermal conversion particle loading capacities of the carbon fiber cloth present different evaporation rates, different thermoplastic polyurethane solution brushing times of the carbon fiber cloth present different contact angles and interface evaporation temperatures, the generating capacity of the water photovoltaic power generation sheet is tested, and finally efficient photo-thermal water-power cogeneration application is achieved.

The invention discloses a method for preparing a copper oxide nanowire material by using a dynamic gas phase atmosphere, and belongs to the technical field of seawater desalination and photo-thermal materials. The technical problem that the service life of the copper oxide nanowire material cannot be ensured while the hydrophilicity of the copper oxide nanowire material is realized in the prior art is solved. According to the technical scheme, the preparation method comprises the following steps: immersing a pretreated copper net into a mixed solution of persulfate and hydroxide, and growing a copper hydroxide nanowire on the copper net through a chemical deposition method; and drying the copper hydroxide nanowire grown on the copper mesh, and then carrying out heat treatment to obtain the copper oxide nanowire loaded on the copper mesh. The preparation method has the beneficial effects that through heat treatment in a dynamic gas phase atmosphere, the hydrophilicity of the copper oxide nanowire is improved, and meanwhile, the copper oxide nanowire has a better long-term service life.

The invention provides a molybdenum disulfide nano material rich in sulfur defects and a preparation method and application thereof, and belongs to the technical field of nano material preparation and sterilization. Starting from the properties of the molybdenum disulfide nano-material, sulfur defects with different concentrations are introduced to the surface of the nano-material through high-temperature calcination, and the molybdenum disulfide nano-material rich in sulfur defects is prepared; the molybdenum disulfide nano material rich in sulfur defects is in the shape of nano flower balls with the diameter of 200-300 nm, has the optimal photothermal conversion efficiency and high adsorbability under near-infrared light irradiation, and can efficiently inhibit the activity of escherichia coli and bacillus subtilis; the preparation method disclosed by the invention is simple in process, stable in reaction system, wide in reactant source and environment-friendly, shows a universal sterilization effect, is expected to introduce a new method in the field of sterilization of nano materials, provides a new technology and a new idea for design and preparation of functional nano materials, and has very good practicability.

The invention discloses a heat-conducting color-adjustable photothermal conversion film and a preparation method thereof, and belongs to the technical field of solar heat collectors. According to the heat-conducting color-adjustable photo-thermal conversion film disclosed by the invention, due to the adoption of a novel material combination of the reflecting layer, the absorbing layer and the antireflection layer, the film keeps efficient heat-conducting property, and meanwhile, the color is flexibly adjusted. Compared with the prior art, the heat conduction color adjustable photothermal conversion film can keep stable heat conduction efficiency and color expression in different environments. The method has the advantages of higher photo-thermal conversion efficiency, wider adaptability and more personalized visual design.

The invention discloses modified lignin with high photothermal conversion efficiency and a preparation method and application thereof. The method comprises the following steps: firstly, fully dissolving lignin in ethanol to extract low-molecular-weight lignin, then fully dissolving the low-molecular-weight lignin, and adding formaldehyde under heating for reaction to obtain the modified lignin with the high photothermal effect. The invention develops a new strategy to improve the photothermal conversion performance of the lignin by utilizing the characteristic of the photothermal effect of the lignin. Lignin has a stronger photothermal effect after being modified, and has a higher temperature value under the same illumination condition, the photothermal conversion efficiency reaches about 52%, the highest temperature rise temperature reaches 112 DEG C, and the cost is low. The prepared modified lignin is simple in production process, wide in raw material source and low in price, and the problem that the preparation cost and the photo-thermal performance of an existing photo-thermal material cannot be achieved at the same time is solved.

The invention provides a preparation method of fibers with efficient photo-thermal heating and heat preservation functions, which comprises the following steps of: preparing Cu2S micro-nano hybrid particles with ultra-small particle size by a template load growth method, and preparing ethylene glycol slurry of the Cu2S micro-nano hybrid particles with small particle size and high dispersion by a wet grinding synchronous modification technology; the preparation method comprises the following steps: proportionally adding ethylene glycol slurry into a polyester polymerization reaction kettle, carrying out in-situ polymerization to prepare a PET / Cu2-xS nano composite material with efficient photo-thermal heating, and preparing hollow fibers with high hollowness by adopting a melt spinning method. The functional fiber prepared by the invention has heating and thermal insulation properties, and can realize 10-20 DEG C of light absorption heating, 0.9-0.98 of far infrared emissivity and 2.0-3.0 DEG C of far infrared radiation temperature rise, and the prepared fabric still has good breaking strength, weaving characteristic and excellent washability.

The utility model provides a heliostat mirror frame, include: main girder, set up first support layer on main girder, the second support layer who is configured for bearing sub mirror, second support layer includes a plurality of second support frame interval setting on first support layer, and at least two second support frames form a sub mirror mounting area for bearing sub mirror, at least part second support frame's length is different, and / or, at least part second support frame's extension direction is different to form different sub mirror mounting area. The utility model provides technical scheme to design to a plurality of second support frame length and extension direction, make a plurality of sub mirror mounting area formed by a plurality of second support frame have at least part difference, and then make a plurality of sub mirror mounting area can be according to actual demand and splice the heliostat of different contour and install splice out different shape contour, be favorable to according to actual environment and other factors more accurately design and control the focusing effect of heliostat, improve photo-thermal conversion efficiency.

The invention relates to bioglass powder containing nano titanium nitride as well as a preparation method and application of the bioglass powder. The bioglass comprises the following components in percentage by mass: 75-95% of bioglass powder and 5-25% of nano titanium nitride powder, the melting process of the bioglass containing nano titanium nitride comprises the following conditions: the temperature is 650-800 DEG C, and the time is 10-15 minutes; the photo-thermal treatment method comprises the step of applying near-infrared light to the nano titanium nitride-containing bioglass powder to regulate and control release of active ingredients in the bioglass, and can also comprise the step of inducing generation of hydroxyapatite on the surface of the bioglass. Compared with the prior art, the bioglass not only has a remarkable photothermal effect, but also has the advantages that the nano titanium nitride powder is not easy to lose and the photothermal performance of the bioglass containing the nano titanium nitride is kept good in an experiment of simulating implantation into a human body environment; the release of active ingredients in the bioglass and the generation of hydroxyapatite on the surface of the bioglass are regulated and controlled by applying near-infrared light, so that controllable and sustainable repair of bone tissues is realized. The technology can be applied to the fields of bone repair, regeneration and the like in bone tissue engineering.

The application belongs to the technical field of biological medical materials, and discloses a polydopamine modified modified nano-graphyne and a preparation method and application thereof. In the method, the polydopamine coating is combined with the nano-graphyne for the first time to construct a GDY@PDA composite system, and the core defects of the blocky graphyne, such as easy agglomeration, poor water solubility and insufficient biocompatibility, are solved. The graphyne-based material is applied to the near-infrared two-region photothermal regulation of neural cell calcium influx for the first time, the calcium ion channel is activated through the local thermal effect of the material, and precise, remote and reversible calcium influx regulation is realized; the limitation that the traditional biocompatibility modification is easy to fall off and difficult to functionalize is broken through, the polydopamine modification makes the material have both photothermal efficiency and biological safety, and the application of the graphyne in the treatment of neural diseases (such as neural cell injury repair) is expanded.

The present invention relates to a high-entropy hydrotalcite-modified carbon fiber photothermal conversion material and a preparation method thereof. The technical scheme is: in a nitrogen or argon atmosphere, the waste fabric is heat-treated at a temperature of 300 to 700°C for 120 to 300 minutes to obtain a carbon fiber with a porous structure; then the metal salt is mixed in an equimolar ratio and stirred at 100 to 200°C for 10 to 25 minutes to obtain a mixed salt melt; then the carbon fiber with a porous structure is immersed in the mixed salt melt for 10 to 30 minutes, taken out, washed with water, and dried to obtain a high-entropy hydrotalcite-modified carbon fiber photothermal conversion material. The present invention has the characteristics of short production cycle, simple process, low cost, cheap and easy-to-obtain raw materials, and large-scale production. The prepared high-entropy hydrotalcite-modified carbon fiber photothermal conversion material has excellent photothermal conversion efficiency and high water evaporation rate.

The invention belongs to the field of antibacterial two-dimensional nano material Mxene catalysts, and particularly relates to a single-layer W-coated MoS2 nanosheet as well as a preparation method and application thereof. The method comprises the following steps: 1) dissolving water-soluble molybdate and water-soluble tungstate in water, and uniformly mixing to obtain a mixed solution; and 2) adding a sulfur source and an organic solvent into the mixed solution, mixing, reacting, and drying to obtain powder. The single-layer W-coated MoS2 nanosheet has a unique two-dimensional plane structure, is large in specific surface area, shows good optical and electronic properties, and is high in photo-thermal absorption in a near-infrared second region, that is, the photo-thermal conversion efficiency is improved, meanwhile, efficient photo-thermal amplification is achieved through peroxidase-like activity of the single-layer W-coated MoS2 nanosheet material, and the photo-thermal conversion efficiency is improved. And the anti-methicillin-resistant staphylococcus aureus infection treatment can be carried out, and the thermal therapy injury to normal tissues is avoided.

This invention discloses a near-infrared responsive self-healing coating and its preparation method, relating to the field of functional coating technology. The near-infrared responsive self-healing coating, by weight, comprises the following components: 100 parts of matrix resin, 1-3 parts of near-infrared absorber, 10-20 parts of self-healing agent, 8-15 parts of curing agent, 1-3 parts of dispersant, 0.5-2 parts of defoamer, and 20-30 parts of solvent. This invention utilizes a specific structured organic molecular near-infrared absorber, which exhibits good compatibility with the matrix resin and achieves uniform dispersion at the molecular level. This avoids the problem of easy agglomeration in traditional inorganic photothermal materials, while significantly improving photothermal conversion efficiency and solving the deficiency of insufficient photothermal conversion capability of conventional organic dyes.

This invention discloses a sea urchin-shaped oxygen-rich vacancy O vac This paper describes a CuO@ZIF-8 core-shell structured photothermal catalyst, its preparation method, and its application, belonging to the fields of photocatalytic materials and artificial nitrogen fixation technology. The technical solution is as follows: the catalyst has a core-shell structure, with the core being urchin-shaped copper oxide (CuO) microspheres. These microspheres are assembled from radially arranged one-dimensional nanoneedles or nanospikes, and the surface of the core contains oxygen vacancies (O). vac The shell is an in-situ grown ultrathin zeolite imidazole ester framework material, ZIF-8, which possesses hydrophobic and molecular diffusion channel properties. This invention also constructs a matching biomimetic three-phase interface photothermal reaction system. Through the synergy of a hydrophilic substrate supplying water and a hydrophobic, permeable shell, it achieves a balance between gas diffusion and proton supply, reducing the submersion of active sites by liquid water and the occurrence of side reactions. This invention has significant advantages such as high photothermal conversion efficiency, mild preparation conditions, and high gas-liquid interface mass transfer efficiency.

The application belongs to the cross field of nanomaterials and coordination chemistry, and specifically discloses a near-infrared responsive photothermal silver-palladium nanocluster material, a preparation method and application in near-infrared photothermal conversion. 362 H 270 Ag 20 Cl4F 12 P8Pd5Sb2, which is abbreviated as Ag 20 Pd5(4‑EBP) 18 (DPPP)4(SbF6)2·2CH2Cl2, belongs to a monoclinic system, and a space group is P21 / n, a =16.228(13)Å, b =40.670(3)Å, c =25.941(2)Å, α=90°, β =100.283(2)°, gamma =90°, V=16846(2)Å 3 , and a molecular weight is 8170.22 Da. The preparation method has short process flow, simple operation, and raw materials are easy to obtain. The photothermal silver-palladium nanocluster has a high photothermal efficiency of 73.25% under 915 nm (0.6 W / cm 2 ) laser excitation, and has good application prospect.

The invention provides a preparation method of far-infrared heating thermal-insulation comfortable fibers, which comprises the following steps: aminating carbon nanotubes, dispersing the aminated carbon nanotubes in an aqueous solution, and then adding a copper source and a sulfur source to prepare a Cu2S-CNTs nano composite material; the octagonal hollow fiber is prepared by blending the octagonal hollow fiber with polyethylene glycol terephthalate to prepare a far infrared heating master batch, and blending the master batch with polyethylene glycol terephthalate for spinning. The fiber prepared by the invention has good far infrared heating capability, light absorption heating capability and excellent heat retaining property and comfort, and the prepared fabric has good breaking strength, weaving characteristic and excellent washability.

The invention provides a preparation method of multifunctional temperature-regulating fibers. The preparation method comprises the following steps: dispersing silicon dioxide coated polyethylene glycol phase-change microcapsules into a polyethylene matrix; the preparation method comprises the following steps: dispersing nano powder capable of absorbing light and generating heat into polyester and polyamide matrixes; the multifunctional composite fiber with light absorption, heating, cool feeling and antibacterial functions is prepared through a skin-core composite spinning method. The functional fiber prepared by the invention has both heating and cooling properties and has excellent contact antibacterial and photo-thermal rapid sterilization capabilities, and the prepared fabric has good breaking strength, weaving characteristic and excellent washability.

The invention discloses a preparation method of regenerated PET-based hybrid xerogel and application of a PET-based multifunctional composite material related to the regenerated PET-based hybrid xerogel in the fields of electromagnetic shielding and photo-thermal conversion. Specifically, waste PET is dissolved with a trifluoroacetic acid / dichloromethane mixed solvent, functional nanofiller is dispersed, a poor solvent is added to induce PET to separate out crystals, hybrid gel is constructed, and the PET multifunctional hybrid xerogel is obtained through direct forced air drying. A mixed solution required by the PET-based hybrid xerogel is prepared from the following components in parts by weight: 5 to 20 parts of waste PET, 1 to 4 parts of functional nano filler Ni-coated CNT, 72 parts of trifluoroacetic acid / dichloromethane mixed solvent and 4 to 22 parts of poor solvent deionized water. In order to further strengthen the mechanical property and the photo-thermal storage capacity of the PET / Ni-coated CNT hybrid xerogel, a phase-change material polyethylene glycol (PEG) is covalently embedded into a foam structure of the hybrid xerogel, and the PET / Ni-coated CNT / PEG multifunctional composite material with good mechanical strength, excellent electromagnetic shielding performance and high photo-thermal energy storage is obtained.

The invention discloses a magnetic ternary chalcogenide two-dimensional nanosheet material as well as a preparation method and application thereof, and belongs to the technical field of biological medicines. The chemical structural general formula of the material is ABC2 at a targeting ligand, in which A is Cu or Ag, B is a ferromagnetic element, and C is S, Se or Te. The magnetic ternary two-dimensional nanosheet material is simple to operate and easy to popularize, and the magnetic ternary two-dimensional nanosheet material can be used for achieving CT enhanced imaging of related diseases, MRI enhanced imaging, related disease treatment and other biomedical applications.

The invention provides a hemicyanine photosensitizer as well as a preparation method and application thereof, and belongs to the field of biological medicines. A hemicyanine dye-based molecule with a D-pi-A structure is developed through donor substitution engineering, and the structure of the hemicyanine dye-based molecule is shown as a formula I in the specification. The hemicyanine dye-based molecule has excellent spectral performance. The PLH1100 nano assembly further constructed on the basis of the hemicyanine dye-based molecule has excellent brain targeting property, tumor enrichment property, light stability and biocompatibility as well as excellent photothermal conversion efficiency and NIR-II tumor imaging capability, and is suitable for photothermal immunotherapy of glioblastoma. In addition, the invention also finds that the PLH1100 can significantly enhance the curative effect of a bispecific T cell adapter (Fn14 * CD3BiTE) aiming at an Fn14 target spot, the combination of the PLH1100 and the Fn14 * CD3BiTE adapter plays a synergistic role in photothermal immunotherapy, a new way is opened up for clinical treatment of glioblastoma, and the PLH1100 and the Fn14 * CD3BiTE have significant clinical application potential. # imgabs0 #