33results about How to "Improve light-to-heat conversion efficiency" patented technology

The invention discloses an MXene quantum dot tip heterojunction material with high photothermal conversion efficiency. The MXene quantum dot tip heterojunction material comprises a substrate and a Co3O4 nanoneedle array structure grown on the substrate in situ, ti3C2MXene quantum dots are loaded on the surface of the Co3O4 nanoneedle, and the Ti3C2MXene quantum dots are fixed on the surface of the Co3O4 nanoneedle through the interaction force of heterogeneous charges. The invention also discloses a preparation method of the MXene quantum dot tip heterojunction material. The preparation method comprises the following steps: (1) preparing a Co3O4 nanoneedle structure arranged in an array on a substrate by using a hydrothermal method; and (2) under the irradiation of an ultraviolet lamp, putting the product in the step (1) into an MXene quantum dot solution, and soaking for 6-8 hours.

The invention discloses a preparation method of a plastic source flash graphene-based multifunctional anticorrosive coating, which comprises the following steps: mixing plastic powder and conductive carbon black to obtain mixed powder, and carrying out Joule thermal reaction on the mixed powder to obtain flash graphene; grinding the flash graphene, adding a polypyrrolidone solution, and carrying out ultrasonic dispersion, filtration and drying; adding the obtained dispersed flash graphene into an acetone solvent, ultrasonically dispersing uniformly, then adding epoxy resin, stirring until the epoxy resin is dissolved, and finally adding a curing agent to obtain the multifunctional anticorrosive coating. According to the preparation method, waste plastic can be effectively utilized, so that the multifunctional anti-corrosion coating with relatively good anti-corrosion performance and photo-thermal deicing effect is obtained.

The invention relates to a preparation method and application of a metal phthalocyanine compound with efficient photothermal conversion capacity. The preparation method comprises the following steps: (1) taking benzophenone, 4-hydroxybenzophenone and the like as initial raw materials, and reacting with 4-nitrophthalonitrile in one step or multiple steps to prepare a phthalocyanine precursor; (2) preparing a green metal copper phthalocyanine compound under solvothermal or solvent reflux with a copper salt (such as copper chloride, copper acetate and the like), and after the preparation is finished, washing the green metal copper phthalocyanine compound for multiple times by using ethanol, deionized water and ethanol; and (3) the green metal copper phthalocyanine compound has good high-heat photo-thermal conversion capacity under xenon lamps, sunlight and simulated sunlight, the preparation method is simple in process and easy for industrial production, and the obtained green metal copper phthalocyanine compound can be applied to photo-thermal materials, light therapy, solar seawater evaporators and the like.

The invention discloses an NIR-II light-driven multifunctional nano enzyme for melanoma treatment and a preparation method thereof, and belongs to the technical field of nano biomedical material preparation, and the preparation method comprises the following steps: accurately weighing pure element substances platinum and selenium according to a ratio, then inserting into a quartz tube, heating to 700-800 DEG C, and reacting to obtain a compound; the compound is naturally cooled to the environment temperature, then the quartz tube is broken, and Pt-Se powder is obtained through collection; the method comprises the following steps: grinding Pt-Se powder into fine powder, then putting the fine powder into a chitosan solvent for ultrasonic treatment, centrifuging after ultrasonic treatment, removing supernate after centrifuging, removing redundant chitosan solvent, centrifuging again, and obtaining nano-enzyme from the supernate, namely PS-CS. The prepared nano-enzyme can effectively convert H2O2 into ROS under laser irradiation, so that the anti-tumor efficiency is improved, and a novel and comprehensive treatment strategy is provided for treatment of melanoma.

According to the preparation method of the polypyrrole / hot-pressed melamine sponge aerogel provided by the invention, the polypyrrole is loaded on the hot-pressed melamine sponge in situ by utilizing a pyrrole polymerization reaction, the obtained aerogel can fully utilize the excellent optical performance of the polypyrrole and the porous structure of the hot-pressed melamine sponge, and the polypyrrole / hot-pressed melamine sponge aerogel is prepared. The preparation of the polypyrrole / hot-pressed melamine sponge aerogel which is high in mechanical property, super-hydrophilic, low in thermal conductivity and high in photo-thermal conversion efficiency is realized. The polypyrrole / hot-pressed melamine sponge aerogel prepared by the method provided by the invention can be applied to solar evaporation in saline water, actual seawater or heavy metal wastewater so as to obtain a clean water source.

The application discloses a kind of carbon confinement nickel-based schottky heterojunction nanoporous composite antifouling agent and preparation method thereof.The antifouling agent material mainly includes nickel-based schottky heterojunction, metal oxide and nitrogen-doped carbon confinement structure, by reasonably controlling metal component, oxide type, carbon shell thickness and porous structure, excellent photothermal, photodynamic and antibacterial properties are obtained.The material is synthesized by "precipitation-annealing coordination" method, which can effectively improve the stability of the antifouling agent in the tropical South China Sea marine environment, prolong the antifouling period, and show significant antibiofouling ability under seawater corrosion, high temperature, high salt and high ultraviolet conditions.The application has lower cost, good environmental friendliness, and can be widely used in marine facilities, ships and other marine equipment antifouling coating.

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 provides a PN ligand capable of being subjected to cis-trans isomerization and a PN ligand modified Au cluster, and the PN ligand modified Au cluster with high photothermal conversion efficiency is prepared from the PN ligand capable of being subjected to cis-trans isomerization under illumination.

The invention discloses a method for preparing an outdoor copper foam composite high entropy ceramic photothermal fresh water evaporator, comprising the following steps: S1, adding cobalt nitrate hexahydrate, iron nitrate nonahydrate, nickel nitrate hexahydrate, chromium nitrate nonahydrate, manganese nitrate hexahydrate, and hexadecyltrimethylammonium bromide to deionized water, mixing evenly, then adding urea, and stirring to obtain a mixed solution; S2, subjecting the mixed solution to a hydrothermal reaction, centrifuging, washing, and drying to obtain a precursor powder; S3, subjecting the precursor powder to a heat treatment to obtain a high entropy ceramic; S4, adding high entropy ceramics and aluminum phosphate to deionized water, ultrasonically dispersing to obtain a suspension, placing copper foam in the suspension, and drying after immersion to obtain an outdoor copper foam composite high entropy ceramic photothermal fresh water evaporator. The invention has a simple preparation process and is easy to mass produce; the prepared photothermal fresh water evaporator has a high water evaporation efficiency.

The application discloses a kind of hydrophilic photo-thermal covalent organic framework nanofiber materials and preparation method thereof, belong to photo-thermal material and seawater desalination field.For the technical problem that existing photo-thermal material is difficult to consider high efficient light absorption and fast water transport, first, homogeneous polymerization method is used, monomer containing sulfonic acid group and porphyrin monomer etc. occur polycondensation reaction in acetic acid aqueous solution, and the photo-thermal covalent organic framework dispersion is obtained by dialysis purification;Subsequently, the dispersion is freeze-dried, and the hydrophilic photo-thermal covalent organic framework nanofiber is obtained.The material uses porphyrin big π bond system as photo-thermal conversion core, and uses the rich sulfonic acid group and regular pore channel in framework to build efficient water transport network.The preparation process of the application is mild and controllable, and the obtained material has excellent broadband light absorption and hydrophilic ability, and has broad application prospect in the field of solar-driven interfacial seawater desalination.

The invention relates to the technical field of biomedical materials, in particular to a gadolinium oxide-based nano preparation as well as a preparation method and application thereof. The preparation method of the preparation comprises the following steps: preparing gadolinium oxide nanoparticles through a hydrothermal method and amination modification, and dissolving the gadolinium oxide nanoparticles in deionized water to obtain a contrast agent solution; dropwise adding the nano-particles into a gold source solution under stirring at a certain temperature to obtain nano-particles with core-shell structures; and finally, slowly adding the synthesized dispersant solution of the water-soluble polymer into the core-shell nanoparticle solution to obtain a gadolinium oxide-based nano preparation solution. And performing post-treatment such as dialysis, freeze drying and the like to obtain the core-shell structure nanoparticles based on the gadolinium oxide nano preparation. The invention relates to a gadolinium oxide-based nano preparation for cancer diagnosis and treatment, gadolinium oxide is used as an MRI contrast agent, and a gold shell is grown on the periphery of the gadolinium oxide as a photo-thermal preparation; the hydrogel has the characteristics of good biocompatibility and the like, and has an important practical prospect in the field of preparation of diagnosis and treatment integrated medicines.

The invention discloses a Y0. 4Sr0. 6MnO3 perovskite porous loading material as well as a synthesis method and application thereof, and belongs to the field of cracking CO2 fuel synthesis catalyst materials. The invention aims to solve the problems of low stability, low CO yield and low CO2 conversion rate of a catalytic material in a solar thermochemical fuel preparation process (two-step CO2 catalytic cracking). The method comprises the following steps: mixing EDTA (Ethylene Diamine Tetraacetic Acid) with an ammonia water solution, adding deionized water, heating in a water bath, and magnetically stirring; adding Y (NO3) 3.6 H2O, Mn (NO3) 2.4 H2O and Sr (NO3) 2 powder, and then adding citric acid monohydrate; adding ammonia water to adjust the pH value, and keeping heating and stirring; drying, grinding, calcining, then grinding, mixing with deionized water, dropwise attaching turbid liquid to the SiC porous framework, and purging; and drying. According to the preparation method, the Y0. 4Sr0. 6MnO3 powder material is attached to the SiC porous framework, so that the gas-solid reaction contact area of the powder material and CO2 is increased, and the oxidation-reduction reaction rate is increased; the heating rate of the material is accelerated, and the photo-thermal conversion efficiency and the overall efficiency are improved.

This invention discloses a manganese dioxide nanozyme with photothermal and antibacterial functions and its preparation method, belonging to the field of biomedical materials technology. The invention first uses lactoferrin (LF) as a carrier template to synthesize manganese dioxide nanoparticles (LF-MnO2) with uniform particle size, high solubility, and high dispersibility via a one-step redox method. LF-MnO2 exhibits photothermal properties, achieving rapid heating and photothermal sterilization under near-infrared light irradiation. LF-MnO2 possesses various enzyme activities, including superoxide dismutase (SOD) and catalase (CAT), which can scavenge various oxygen free radicals. Furthermore, LF-MnO2 can efficiently catalyze the production of oxygen from hydrogen peroxide. The LF-MnO2 prepared by this invention has broad application prospects in photothermal antibacterial, antitumor, reactive oxygen species scavenging, and tissue regeneration and repair fields.

The invention discloses a full-biomass transparent liquid mulching film with photo-thermal conversion performance and a preparation method and application thereof, the liquid mulching film comprises the following components in parts by weight: 2-4 parts of lignin-containing nanocellulose, 1-2 parts of a biomass cross-linking agent, 25-30 parts of a biomass plasticizer and 65-70 parts of gelatin, the lignin-containing nanocellulose is nanocellulose with residual lignin obtained by performing lignocellulose refining treatment on corn straws. The liquid mulching film disclosed by the invention realizes full-biomass configuration, has excellent photo-thermal conversion performance, has extremely high application potential in high-altitude areas, and can effectively meet the photo-thermal conversion requirements under strong ultraviolet irradiation and low-temperature environments.

The invention belongs to the technical field of photo-thermal electric conversion, and particularly relates to alkali lignin loaded copper sulfide nanoparticles, a photo-thermal electric device and a preparation method and application of the alkali lignin loaded copper sulfide nanoparticles and the photo-thermal electric device. According to the preparation method, alkali lignin nanoparticles and Cu < 2 + > in copper salt are firstly adsorbed and then react with S < 2-> to prepare alkali lignin-loaded copper sulfide nanoparticles, and then the alkali lignin-loaded copper sulfide nanoparticles and hydrogel with a thermoelectric function are assembled to obtain the photo-thermal electric device. Wherein the alkali lignin loaded copper sulfide nanoparticles as a photothermal conversion material have excellent photothermal conversion efficiency and long-term stability, and are the key point of improving the performance of photothermal electric devices; the hydrogel with the thermoelectric function keeps excellent thermoelectric performance and water retention performance, and the stability and durability of the hydrogel are enhanced; the photo-thermal electric device assembled by the alkali lignin and the copper sulfide nano-particles has excellent photo-thermal electric performance and long service life, and the huge potential and application prospect of the alkali lignin loaded copper sulfide nano-particles in the fields of photo-thermal electric devices and the like are fully proved.

The invention discloses a mesoporous hollow carbon drug loading system with cascade enzyme catalytic activity and preparation and application thereof, and belongs to the technical field of medicines. The drug loading system is composed of mesoporous hollow carbon, an anti-tumor drug, gold nano-enzyme and a hydrophilic functional polymer. The preparation method comprises the following steps: preparing gold nano-enzyme; the preparation method comprises the following steps: preparing MHC-COOH and MHC-SH; and preparing the drug-loaded nano enzyme. The drug loading system provided by the invention realizes efficient loading and stable dispersion of chemotherapeutic drugs. The gold nano-enzyme with the size consistent with that of the mesoporous channel of the carrier is used as a'gated 'switch and has multiple functions. The drug loading system has the effect of enhancing PTT; the premature release of chemotherapeutic drugs is prevented, the toxic and side effects on normal tissues are reduced, and the reduction / pH / NIR multi-responsive drug release behavior is realized; under the irradiation of near-infrared light, the drug release speed is further accelerated, the GSH consumption rate and the catalytic rates of the gold nano-enzyme and MHC are further improved, and a nano delivery system for enhancing chemotherapy through photo-thermal and cascade enzyme catalysis is achieved.

The application discloses a preparation method of a polyurea photo-thermal anti-icing coating and belongs to the technical field of photo-thermal anti-icing. The application is based on silica / polyurea composite particles and carbon materials, and super-hydrophobicity and relatively high photo-thermal conversion efficiency are obtained. The method is characterized in that silica nanoparticles are combined into polyurea molecules to form silica / polyurea composite particles; then the composite particles are combined with graphite microparticles and uniformly dispersed in polysiloxane, and a super-hydrophobic photo-thermal coating with excellent wear resistance and durability is developed. The coating surface has high photo-thermal conversion efficiency, can obviously increase temperature under the irradiation of sunlight, can delay the icing time and reduce the ice adhesion strength, and thus better anti-icing and de-icing effects are achieved.

The present invention belongs to the technical field of sewage treatment, and in particular to a composite coal slag for sewage treatment and a preparation method thereof, wherein the preparation method includes the following steps: Step 1: collect and compress the burned coal slag solid waste and sinter it into a coal slag block; Step 2: immerse the coal slag block in a photothermal conversion agent solution, and dry and solidify it into a composite coal slag after adsorption. By controlling the density, porosity and adsorbed photothermal conversion amount of the composite coal slag, it can be ensured that the composite coal slag can be used for general industrial sewage treatment, and the problem of coal slag solid waste recycling is solved, which has practical industrial utilization value.

This invention relates to the field of fiber technology and discloses an antibacterial and heat-insulating fiber based on thermal insulation materials and its preparation method. By surface-modifying inorganic antibacterial and heat-insulating hollow titanium dioxide microspheres with polythiophene and polybutadiene, an antibacterial and heat-insulating material with good antibacterial and heat-insulating properties is prepared. This material is then introduced into polypropylene chips along with a reactive quaternary ammonium salt antibacterial agent, methacryloyloxyethyltrimethylammonium chloride, and extruded via a melt reaction. The resulting fiber possesses both excellent heat insulation and long-lasting antibacterial properties, while also improving the fiber's comfort.

The application discloses a kind of based on photothermal filler and dynamic hydrogen bond material multiple self-repairing modified asphalt and preparation method thereof, belong to road engineering and material science technology field.The raw material of the multiple self-repairing modified asphalt based on photothermal filler and dynamic hydrogen bond material of the application includes by mass fraction:SBS modified asphalt 100 parts, photothermal filler 1-5 parts and dynamic hydrogen bond material 1-3 parts.The application aims to combine photothermal conversion mechanism and dynamic hydrogen bond self-repairing mechanism, accelerate the movement of asphalt and polymer molecular chain at crack, to improve the self-repairing ability of asphalt material, prolong the service life of asphalt pavement, and reduce the maintenance cost of asphalt pavement.The application solves the deficiency of traditional self-repairing asphalt in repair frequency, repair effect and repair durability, has excellent photothermal conversion efficiency and multiple self-repairing performance, and the repair efficiency does not appear obvious attenuation after multiple load damage-illumination repair cycle, can effectively restore mechanical properties, suitable for road construction and maintenance under different climate conditions.

A temperature-responsive water harvesting hydrogel and a preparation method thereof, the water harvesting hydrogel is composed of N-isopropyl acrylamide, N,N,N',N'-tetramethylene ethylenediamine, N,N-methylene bisacrylamide, polyethylene glycol, ammonium persulfate and black titanium dioxide. The temperature-responsive water harvesting hydrogel of the present application combines the adjustable pore size of hydrophilic polyethylene glycol, the temperature response characteristics of N-isopropyl acrylamide and the excellent light-heat conversion performance of black titanium dioxide nanoparticles, and can be used as an efficient solar "switch". The temperature-responsive water harvesting hydrogel of the present application has good ability to remove pollutants tetracycline in water and sterilization ability under sunlight; has excellent water harvesting capacity; can realize self water harvesting-release cycle, thereby significantly improving water use efficiency and reducing water resource waste.

The invention provides a near-infrared two-region micromolecule optical diagnosis and treatment reagent based on hydrogen sulfide activation. The chemical structural formula of the reagent is # imgabs0 #. The diagnosis and treatment reagent provided by the invention can accurately identify solid tumors overexpressed by hydrogen sulfide, realizes effective distinguishing between the tumors and normal tissues, and can perform tumor excision under the guidance of NIR-II fluorescence imaging; in addition, the material has good photothermal conversion efficiency, and can successfully ablate tumors under laser irradiation. The reagent shows huge superiority in tumor recognition and treatment, and is expected to become an efficient molecular tool for tumor diagnosis and treatment.

This invention relates to a D-A-D structured NIR-II photothermal material, its preparation method, and its applications. Specifically, the photothermal material of this invention has a simple structure, is easy to synthesize, is easy to purify, and has a high yield. Furthermore, due to its large conjugated system, the molecular structure is stable and not easily degraded under NIR-II light irradiation. In addition, the photothermal material of this invention has excellent optical properties, good photothermal conversion efficiency, extremely low biotoxicity, and broad ultraviolet absorption in the 800-1000 nm range. Therefore, it has great application prospects in near-infrared photodynamic therapy and tumor treatment.

This invention belongs to the field of coating materials, specifically including an anti-fog coating, its preparation method, and its application. The raw materials for preparing the anti-fog coating specifically include the following components: photothermal nanoparticles, polyvinyl alcohol, phytic acid solution, glutaraldehyde solution, and deionized water in a ratio of 0.6 kg: 15 kg: 20 L: 10 L: 150 L. The photothermal nanoparticles are added to deionized water and ultrasonically dispersed to obtain a uniform nanoparticle suspension. Polyvinyl alcohol is added to this suspension, and the system is placed in a high-temperature water bath and magnetically stirred until completely dissolved. Then, an appropriate amount of phytic acid solution is added, and ultrasonically dispersed until the phytic acid is fully dissolved. Next, glutaraldehyde solution is added to the mixture, and magnetically stirred to allow the glutaraldehyde to fully react with the system components, obtaining a stable and dispersed coating. Finally, the coating is uniformly applied to the surface of a glass substrate and allowed to air dry naturally in a ventilated area. The resulting coating effectively inhibits the formation of fog droplets and accelerates the dissipation of existing fog droplets, while maintaining good light transmittance.

The invention relates to the technical field of photo-thermal composite materials, in particular to a hemostatic and antibacterial kaolin / molybdenum sulfide photo-thermal composite material and a preparation method and application thereof. The invention discloses a hemostatic and antibacterial kaolin / molybdenum sulfide photo-thermal composite material which comprises kaolin and metal 1T-phase MoS2 loaded on the kaolin. The preparation method comprises the following steps: dissolving a molybdenum source and a sulfur source in deionized water, adding kaolin, carrying out a hydrothermal reaction, centrifuging, washing, and drying to obtain the hemostatic and antibacterial kaolin / molybdenum sulfide photo-thermal composite material. According to the preparation method disclosed by the invention, the kaolin with a layered structure and surface charge characteristics is introduced, so that the molybdenum sulfide grows in situ between layers or on the surface of the kaolin body, controllable transformation of the molybdenum sulfide from a 2H phase to a 1T phase is realized, and the 1T molybdenum sulfide can stably exist, so that the composite material with high photo-thermal performance and temperature balance capability is obtained. Molybdenum sulfide is loaded on kaolin, so that the hemostatic performance of kaolin is further improved.

The application provides a kind of inkfish juice copper oxide-based nanocomposite, in this paper, inkfish juice (M) is as core, a layer of CuO is grown outside it, and M@CuO composite multifunctional nanomaterial is successfully constructed.M@CuO composite material is spherical, and the nanometer particle size is 128.2 nm, and it has good photo-thermal conversion performance (η T =47.6%) under near infrared light (NIR) irradiation conditions.In addition, M@CuO shows good Fenton effect at room temperature, and the Fenton reaction rate can be further improved by photo-thermal effect, and the Fenton reaction rate at 45 DEG C is more than twice that at 25 DEG C under the same conditions.In vitro cell experiments, M@CuO shows good biological safety, and under the effect of photo-thermal-chemical kinetics combined therapy, it can efficiently kill tumor cells, and provides an effective strategy for developing multifunctional nanomaterials with PTT-CDT combined therapy.

The invention provides a rare earth oxysulfide composite material and a preparation method and application thereof.The rare earth oxysulfide composite material is a core-shell structure nanosheet with CuS as a shell and europium (Eu)-doped gadolinium oxysulfide (Gd2O2S) as a core, the rare earth oxysulfide composite material has optical imaging and nuclear magnetic resonance imaging functions, cancer cells can be positioned and calibrated, and due to the photo-thermal performance of CuS, the rare earth oxysulfide composite material can be applied to cancer cells. The cancer cells can be effectively inactivated.

The present application relates to the field of photothermal materials, discloses a kind of photothermal coating preparation photothermal material composition and its application and photothermal composite film and its preparation method and application, the photothermal material composition contains chitosan, hydrophilic photothermal component and optional auxiliary, wherein, the content weight ratio of the chitosan, the hydrophilic photothermal component and optional auxiliary is 1:0.1-15:0-5, the photothermal composite film prepared by the photothermal material composition provided by the present application is strong, has higher light absorption rate, photothermal conversion efficiency and driving water evaporation rate.

The present invention relates to an organic photosensitizer for integrated tumor diagnosis and treatment and its preparation and application, and the structural formula of the photosensitizer is:. The present invention has developed two single-component photosensitizers with electron-donating and electron-withdrawing structures, which can use 808nm as a therapeutic light source, have a deeper penetration depth and allow a larger amount of skin exposure, which helps to improve the therapeutic effect. It also has multimodal diagnosis and treatment functions, with fluorescence imaging for diagnosis, photodynamics and photothermal for treatment, and has great potential for integrated tumor diagnosis and treatment, and the therapeutic effect on subcutaneous superficial tumors is expected.

The invention relates to the technical field of anti-counterfeit printing materials, and discloses a temperature change anti-counterfeit printing coating which comprises a bearing substrate, a functional layer group and a protective surface layer which are sequentially arranged from bottom to top, the bearing substrate is made of a material adaptive to a target application scene, and the material comprises any one of plastic, paper and metal; the functional layer group at least comprises a temperature change core layer, the temperature change core layer contains at least one thermochromic component, the thermochromic component is selected from a nano modified microencapsulated pigment, and the color change temperature precision of the temperature change core layer is less than or equal to + / -0.3 DEG C. According to the invention, environmental thermal disturbance is resisted in a targeted manner through differentiated structural design, namely, the cavity of the heat insulation layer in the eight-layer structural scheme and the heat insulation sheet work together, so that interference of external temperature fluctuation on the temperature change core layer can be isolated, and the response time is shortened by more than or equal to 50%; according to the five-layer structure scheme, the photothermal conversion efficiency is optimized through 8% of graphene / CNTs composite filler, and rapid conduction and uniform distribution of heat are achieved.