776 results about "Photothermal conversion" patented technology

The invention discloses a method for degrading antibiotics in wastewater based on chitosan aerogel. The method comprises the following steps: adding chitosan aerogel Co-PBA / CS and potassium hydrogen peroxymonosulfate into the antibiotic-containing wastewater, and degrading under stirring. The method provided by the invention has a ciprofloxacin degradation capability of 94.7%. In addition, the material also has excellent self-cleaning and photo-thermal conversion performance, and can realize surface cleaning. The multifunctional aerogel provides a new strategy for removing pollutants such as ciprofloxacin in a complex and severe water environment.

The invention discloses a multi-shell photo-thermal phase change microcapsule and a preparation method thereof, the multi-shell photo-thermal phase change microcapsule comprises a capsule wall and a capsule core, the capsule core is an organic phase change material, the capsule wall comprises a titanium dioxide layer, a graphene layer and a polydopamine layer, the graphene layer is located outside the titanium dioxide layer, and the polydopamine layer is located outside the graphene layer. The multi-shell photo-thermal phase change microcapsule disclosed by the invention can realize full-wave band capture, and is high in photo-thermal conversion efficiency and good in shell stability.

The invention provides a solar seawater desalination photothermal conversion efficiency optimization method and system based on machine learning, and the method comprises the steps: firstly collecting the solar spectrum distribution data, seawater turbidity spectrum data, real-time heat flow data and semiconductor nanomaterial data of a target sea area; and constructing a material spectrum mapping library based on the light absorption characteristics of the nano material. Through coupling analysis of a solar spectrum and a seawater turbidity spectrum, an environmental constraint condition is formed, a Bayesian optimization model is combined with a material spectrum mapping library and real-time heat flow data, and an optimal nano material mixing ratio is generated under environmental constraint. Then, the interface evaporation rate is predicted through the deep residual network, an optimal material morphology configuration scheme is obtained, and finally the morphology configuration is applied to semiconductor nanomaterial preparation. The photo-thermal conversion efficiency of the solar desalination system in the high-turbidity seawater environment is improved.

The invention provides a composite photo-thermal hydrogel for seawater desalination and a preparation method and application thereof, the hydrogel has a structural unit of a structure as shown in a formula I. COF with photo-thermal performance is compounded with the hydrogel, and the hydrogel has a three-dimensional long-range ordered pore structure to promote transmission of water molecules; and the COF dispersed in the material contains porphyrin and a C = N double-bond connection structure, so that the material has excellent photothermal conversion efficiency. Therefore, under the irradiation of sunlight, the composite photo-thermal hydrogel disclosed by the invention can realize photo-thermal conversion to realize seawater evaporation, the seawater evaporation rate reaches 3.6 kgm <-1 > h <-1 >, and the performance is improved by about 3 times compared with that of a traditional carbon-based material. According to the preparation method of the composite photo-thermal hydrogel, large and complex equipment is not involved in the preparation method, the preparation technological process is simple, and industrial large-scale production is facilitated; and the reaction temperature in the preparation process is low, the energy consumption is also reduced, and the cost advantage is remarkable.

The invention relates to the technical field of organic functional molecule synthesis, and particularly discloses a lactone unit embedded bissanthin compound as well as a synthesis method and application thereof. According to the method, a synthesis strategy from bottom to top is adopted, and a lactone unit is embedded into bay area positions on two sides of bissanthin, so that a compound A is successfully obtained. Meanwhile, the compound A shows a self-absorption characteristic under different solution concentrations, and when the compound A is prepared into nano particles, the nano particles show relatively high stability and 65% photothermal conversion efficiency in a photothermal performance test.

The invention discloses a preparation method and application of a reproducible self-healing polyurethane elastomer with synergism of dynamic silicon oxygen bonds and multiple hydrogen bonds. The method comprises the following steps: (1) carrying out a pre-polymerization chain extension reaction on polytetrahydrofuran, isophorone diisocyanate and a catalyst; (2) adding a 3, 13-dihydroxy propyl octaphenyl double-layer silsesquioxane monomer to carry out a chain extension reaction, and then adding carbohydrazide to carry out a reaction; and (3) adding glycerol and camphorsulfonic acid, uniformly stirring, pouring into a mold, curing and drying, thereby obtaining the reproducible self-healing polyurethane elastomer with synergistic dynamic silicon-oxygen bonds and multiple hydrogen bonds. According to the invention, a common fabric is soaked in a dispersion liquid formed by uniformly mixing diluted polyurethane and hydrophobically modified MXene to obtain the multifunctional composite material with the functions of self-cleaning, self-repairing, photo-thermal conversion and human body sensing.

The invention discloses a composite fiber membrane for hydrogen production and oxygen production through light-driven full water decomposition and a preparation method of the composite fiber membrane, and belongs to the technical field of photocatalysis technology and nano material preparation, and the composite fiber membrane shows excellent photothermal conversion performance in the reaction of hydrogen production and oxygen production through light-catalyzed water decomposition and also has efficient water transmission capacity. The stability and the reusability are relatively high. According to the preparation method, a Ti source compound, a Sr source compound, tetraethyl orthosilicate and a spinning solution are used as raw materials for electrostatic spinning, and after pre-oxidation and carbonization treatment at a certain temperature, the SrTiO3 / SiO2 composite carbon fiber membrane is obtained, and Cr2O3 / Rh and CoOOH cocatalysts are supported. The fiber membrane prepared by the invention has the function of photocatalytic water decomposition to produce hydrogen under the irradiation of sunlight, can stably produce hydrogen and oxygen in various water resources, is simple in process and low in cost, and can be widely applied to the fields of energy sources, environmental protection and the like.

The invention relates to the technical field of separation of oil-containing wastewater, and particularly discloses a nano separation membrane material for separating oil-containing wastewater as well as a preparation method and application of the nano separation membrane material aiming at the problems of limited oil-water separation flux, poor anti-pollution performance and the like of a separation membrane material for treating the oil-containing wastewater at present. The nano separation membrane material comprises a nano base membrane and polydopamine (at) ZnIn2S4-CuS anchored on the surface of the nano base membrane, and the polydopamine (at) ZnIn2S4-CuS is a gear-shaped ZnIn2S4-CuS heterojunction material bridged with dopamine. According to the nano separation membrane material, through the gear-shaped ZnIn2S4-CuS heterojunction, the ultrahigh oil-water separation flux is achieved, the photocatalysis-photothermal conversion performance is achieved through the synergistic effect of ZnIn2S4-CuS and the polydopamine layer, and a feasible separation membrane material is provided for efficient separation treatment of complex emulsified oily wastewater; and meanwhile, the synergistic effect of gear-shaped CuS and ZnIn2S4 is utilized to promote efficient transfer of photo-induced electrons, generate abundant active substances, quickly degrade organic pollutants in the oily wastewater and play an anti-pollution role.

This invention relates to a carbonized loofah photothermal evaporator with a wall-like structure and its preparation method, relating to the field of solar-driven interfacial water evaporation. The invention utilizes freeze-drying technology to dry fresh loofah, obtaining a freeze-dried loofah that retains its porous structure; then, it carbonizes the freeze-dried loofah in a tubular furnace under an inert gas environment. The carbonized loofah retains the anisotropic structure of the inner and outer layers of the fresh loofah. The outer layer, with its dense structure resembling a wall, maintains its shape and provides structural protection. The inner layer, with its loose and porous structure, acts as a channel for directional water transport, facilitating efficient water evaporation. The resulting integrated carbonized loofah photothermal evaporator exhibits excellent water transport rate and good photothermal conversion capability, making it applicable to interfacial water evaporation. This evaporator uses readily available raw materials, has a simple manufacturing process, high photothermal evaporation efficiency, and is environmentally friendly, showing promising applications in seawater desalination.

The invention discloses a multifunctional hydrogel patch and a preparation method and application thereof.The biological patch comprises decellularized freeze-dried tumor tissue (dFCT) and a hydrogel layer loaded with hair melanin nanoparticles (HNPs), the dFCT is obtained by decellularizing and freeze-drying the tumor tissue, and rich natural extracellular matrix components are reserved; hNPs is extracted from hair and has excellent active oxygen scavenging capacity and photothermal conversion performance; it is preferable that the hydrogel layer is a methacrylated gelatin (GelMA). The patch disclosed by the invention shows a remarkable cell viability promoting effect and antibacterial ability in vitro, and can accelerate wound healing by reducing oxidative stress, inhibiting inflammatory response and promoting angiogenesis in vivo. The patch is simple and convenient in preparation process and natural in component source, has multiple functions of resisting bacteria, resisting oxidation, promoting tissue regeneration and the like, and is suitable for wound repair treatment.

This invention discloses a method for preparing a microcapsule-based photothermal self-healing anti-icing coating, belonging to the field of functional coating materials technology. The method includes: obtaining the core material and wall material composition parameters of the microcapsules, and collecting the polyacrylamide concentration and dopamine polymerization time; constructing a morphology-photothermal correlation model of the microcapsules to obtain the predicted photothermal conversion efficiency; performing multi-objective optimization on the core and wall material composition parameters with the target photothermal conversion efficiency as a constraint, and iteratively inverting to obtain the optimal microcapsule configuration; preparing primary microcapsules and composited with a dopamine photothermal modification layer on their surface to obtain a photothermal self-healing microcapsule additive; mixing the photothermal self-healing microcapsule additive with an epoxy resin-based coating at an adaptive mass ratio, coating and curing to obtain an anti-icing coating. This invention achieves accurate prediction of the photothermal conversion efficiency of microcapsules and intelligent optimization of composition parameters, obtaining an anti-icing coating with both high photothermal conversion efficiency and rapid self-healing capability.

The utility model discloses a blue-green algae mud dehydration treatment device based on a solar photothermal conversion technology, which belongs to the technical field of blue-green algae dehydration and comprises a dehydration chamber, an evaporation chamber, a collection chamber, a water storage chamber and a photovoltaic power supply system which are communicated in sequence, the dehydration chamber is located below the treatment device, the outer side of the dehydration chamber is connected with an algae mud branch pipe, and an evaporation system is arranged in the dehydration chamber and comprises an underwater heat conduction shell and a floating type composite fabric material; the evaporation chamber is positioned above the whole device; a water collecting top plate is arranged in the evaporation chamber; the floating type composite fabric material is a carbon fiber fabric modified by a nitrogen-doped carbon nano tube; the collecting chamber is positioned on one side of the evaporation chamber; and the water storage chamber is positioned below the collecting chamber. Solar energy is used as clean energy, moisture in blue-green algae is evaporated through the photothermal effect, and therefore efficient treatment of the blue-green algae is achieved, environmental pollution caused by chemical treatment can be reduced, and economic cost of blue-green algae treatment can be effectively reduced.

This invention provides a novel thermal insulation fabric and its preparation method. The preparation method uses polyester material as the polymer matrix, Cs x Wo3NPs, as a photothermal conversion material, is melt-blended and extruded to obtain a composite masterbatch, which is then melt-spun into composite polyester fibers. These fibers are subsequently knitted with a certain proportion of spandex filaments to create a novel thermal insulation fabric. This fabric not only possesses excellent light absorption and heat generation properties, but also addresses the technical issues of easy coating peeling and short service life in finished textiles by encapsulating inorganic nanoparticles with organic polymers. This ensures the stability and safety of the photothermal conversion nanoparticle material. Furthermore, the fabric has a silky smooth feel, good elasticity, and excellent dyeing properties.

The invention discloses a multifunctional composite coating with high photothermal conversion efficiency and a preparation method thereof, and belongs to the technical field of functional coating materials. The problems that an existing carbon-based photo-thermal material is large in reflection loss, poor in mechanical durability and single in function are solved. The coating is formed by compounding a zinc oxide microflower framework or a zinc oxide microflower-micro-nano particle multilevel structure framework, a carbon-based nano material attached to the surface of the framework and a surface modifier. The preparation method of the coating comprises the following steps: synthesizing zinc oxide microflowers by a hydrothermal method; the preparation method comprises the following steps: jointly dispersing the graphene oxide, a carbon material and a micro-nano material in a solvent containing a surface modifier to form a coating solution, finally spraying, brushing or spin-coating the coating solution on a substrate, and curing to obtain the composite material. The coating integrates the functions of efficient photothermal conversion, stable super-hydrophobicity, long-acting corrosion prevention and active anti-icing / deicing, has excellent mechanical strength and wear resistance, and is low in raw material cost, simple in process and suitable for large-scale preparation.

The application provides a radionuclide nanohydrogel microneedle and a preparation method and application thereof, and belongs to the field of nanobiomedicine. 32 P-labeled calcium phosphate, which is formed by a biomimetic reaction of Ag2S@Ca 32 P nanoparticles, and a base layer which is a base matrix and comprises hyaluronic acid 32 P nanohydrogel microneedle can release Ag2S nanoparticles in response to a weakly acidic tumor environment, and under the irradiation of near-infrared light, the photothermal conversion efficiency can effectively kill bacteria, effectively improve the tumor hypoxic environment, enhance the treatment effect of radionuclides, play an antibacterial and wound healing promoting role in melanoma defect repair, and maximize the inhibition of tumor growth and tumor recurrence.

According to the photo-thermal evaporation-photocatalysis hydrogen production system, hydrogen production can be carried out while seawater desalination is achieved through a photo-thermal evaporation-photocatalysis hydrogen production composite material, photo-thermal conversion can be achieved through carbonized wood (wood subjected to surface carbonization treatment), and seawater is evaporated to obtain water vapor; the water vapor participates in hydrogen production reaction on the surface of the photocatalytic hydrogen production catalyst as a reaction raw material. The photo-thermal evaporation-photocatalytic hydrogen production composite material provided by the invention not only can broaden spectral absorption, but also can expand the absorption wavelength of a sunlight spectrum to visible light and near-infrared regions; meanwhile, the interface reaction resistance is also reduced, and electron-hole separation and transfer are optimized, so that the utilization rate of light energy is improved, and the yield of hydrogen is further improved.

The invention discloses a polydopamine-tea polyphenol coated copper manganese oxide composite nano-enzyme as well as a preparation method and application thereof, and belongs to the technical field of biomedical materials. According to the invention, a DA-Cu (II)-EGCG (epigallocatechin gallate) complex is formed by virtue of chelation of main components of dopamine and tea polyphenol, namely epigallocatechin gallate, and copper ions; potassium permanganate is introduced for oxidative polymerization to obtain the polydopamine-tea polyphenol / copper manganese oxide organic-inorganic hybrid nano composite material, the nano composite material is monodisperse nano particles, the average particle size is about 80 nm, the nano composite material shows excellent nano enzyme catalytic activity, active oxygen free radicals can be effectively removed, and the nano composite material can be used for preparing nano-enzyme. The material has good photo-thermal conversion performance under near-infrared light, and shows excellent photo-thermal and photodynamic synergistic antibacterial effects. The preparation method disclosed by the invention is simple, mild, environment-friendly, low in cost and convenient for batch production.

The invention discloses preparation of a GSH responsive photo-thermal chemical synergetic liquid metal nanocomposite and application of the GSH responsive photo-thermal chemical synergetic liquid metal nanocomposite in tumor treatment, and relates to the field of nano biomedical materials. According to the composite material, gallium-tin alloy (GaSn) is used as an inner core, a reduced graphene oxide (RGO) middle layer and a manganese dioxide (MnO2) outer shell are sequentially coated, a three-layer core-shell structure is formed, and the average particle size is controlled to be about 60 nm. The liquid metal composite nanomaterial has excellent photothermal conversion performance and oxidation resistance. The compound not only can be used for treating tumors and cancers, quickly killing cancer cells and effectively inhibiting tumor growth, but also can quickly deplete GSH, break dynamic balance of redox and improve ROS level in cells. Experiments show that the material shows a remarkable inhibition effect on tumor cells, has good biocompatibility and regulation and control release characteristics, and provides a new strategy for precise synergistic treatment of solid tumors.

The invention discloses a hydrophobic, heat-insulating and flame-retardant integrated aerogel composite material and a preparation method thereof, and relates to the technical field of aerogel materials, the composite material comprises a polyimide-polyurethane hybrid polymer aerogel skeleton, a bionic directional micro-channel structure and an anchored graphene and carbon nanotube composite photothermal conversion layer are arranged in the skeleton, and a double-microcapsule self-repairing system is uniformly dispersed; the surface of a framework is modified with a perfluoroalkylsilane hydrophobic layer, a phosphorus-nitrogen-silicon synergistic flame-retardant system is introduced into a hybrid polymer network, and the preparation method comprises the steps that printing ink containing a double-microcapsule self-repairing system and a flame retardant is prepared, a gel blank is constructed through direct-writing forming 3D printing, and after freeze drying and programmed temperature rising thermal imidization treatment, the flame-retardant self-repairing gel is obtained. The hydrophobic layer is modified through chemical vapor deposition, and the composite material has hydrophobic, heat-insulating and flame-retardant properties and micro-damage self-repairing capability, and is suitable for the fields of aerospace, building heat preservation, new energy and the like.

The invention relates to a high-salt-tolerance asymmetric solar interface evaporator and a preparation method. Nano-crystalline cellulose with low thermal conductivity is used as a base material, carbon black with good photothermal conversion performance is used as a photothermal layer, methyltrimethoxysilane is used as a hydrophobic modifier, and the high-salt-tolerance asymmetric solar interface evaporator with a vertical pore channel structure is constructed through a directional freezing technology. The evaporator is composed of a cellulose hydrophilic lower layer and a carbon black hydrophobic upper layer, water can be rapidly transported to an evaporation interface through the capillary action of cellulose, the carbon black hydrophobic upper layer can improve the light absorption capacity and the heat positioning capacity of the evaporator, and continuous and efficient water evaporation is achieved. Cellulose cation modification and an asymmetric structure can reduce the generation of salt crystals, can significantly improve the salt resistance of the evaporator, has a good application prospect in the field of solar seawater desalination, and has wide practical application potential due to easy preparation, enlargement and low cost.

The invention relates to the technical field of electronic paste, and provides conductive paste and a preparation method thereof. The conductive paste comprises the following components in parts by weight: 60-85 parts of copper powder, 0.1-5 parts of a photothermal conversion aid, 0.5-3 parts of a ligand dispersant, 0.1-2 parts of an antioxidant aid and 10.5-28 parts of an organic carrier. According to the conductive paste provided by the invention, the copper powder is used as a conductive phase, and a conductive network is constructed after sintering; the photothermal conversion auxiliary agent can efficiently absorb light energy and convert the light energy into heat energy, sintering conditions are reduced, and the slurry is compatible with a flexible substrate; the ligand dispersant improves the dispersibility of each component and assists in obtaining a uniform and stable conductive film layer; the antioxidant additive forms a protective layer on the surface of the copper powder, dynamic antioxidant protection is provided, and air sintering is achieved; the slurry is endowed with good rheological property by the organic carrier, and uniform film formation is facilitated. Therefore, under the synergism of all the components, high-efficiency sintering can be performed in a low-temperature and air environment, and a copper-based film layer with high compactness, high conductivity and high stability is obtained.

The invention discloses a photo-thermal composite film based on cobalt porphyrin and graphene and a preparation method and application thereof.The photo-thermal composite film comprises a substrate layer, a photo-thermal active layer loaded on the substrate layer and a sealing layer wrapping the surface of the photo-thermal active layer, and the photo-thermal active layer is a composite material of a cobalt porphyrin covalent organic framework material and reduced graphene oxide; and the sealing layer is made of polydimethylsiloxane. The flexible PVDF microporous membrane is used as a mechanical support substrate, the COF-rGO photo-thermal active layer is loaded through a vacuum filtration method, surface sealing and hydrophobic strengthening are achieved through impregnation and curing of the PDMS solution, the whole preparation process is simple, conditions are mild, and the obtained membrane material is stable in structure and firm in combination and has good application prospects. The material has high-efficiency photo-thermal conversion performance, stable super-hydrophobic property and excellent oil-water separation capability, can effectively adsorb high-viscosity oil in a severe environment, and provides a feasible technical path for developing a high-efficiency and durable solar-driven oil-water separation material.

A preparation method of the efficient solar evaporator comprises the steps that (NH4) Mo7O24. 4H2O and CH4N2S are weighed and dissolved in water, chitosan biochar is added, stirring reaction is conducted, washing and drying are conducted after cooling, and MoS2-chitosan biochar is prepared; and weighing sodium alginate, dissolving the sodium alginate in water, adding the prepared MoS2-chitosan biochar, carrying out ultrasonic stirring, loading on purified melamine sponge, freezing, carrying out vacuum drying, soaking in a CaCl2 solution, washing, freezing, and carrying out vacuum drying to obtain the evaporator. By developing a novel evaporation material, the limitation of a traditional single-interface structure on the evaporation rate is broken through, the evaporation efficiency and the evaporation rate are effectively improved, and the photothermal conversion efficiency and the water production capacity are remarkably improved; and the salt resistance and the pollution resistance of the evaporator are solved, the problem of long-term operation stability is solved, and the method has very high practicability and wide applicability.

The application relates to preparation and application of a zwitterion-containing porphyrin-based conjugated microporous polymer composite fiber membrane, and components of the composite fiber material include: a porphyrin-based conjugated microporous polymer, a zwitterionic polyionic liquid and a polymer matrix; wherein the polymer matrix fiber is doped with the porphyrin-based conjugated microporous polymer and the zwitterionic polyionic liquid. The zwitterion-containing porphyrin-based conjugated microporous polymer composite fiber membrane has the advantages of salt resistance, fast evaporation rate and high photo-thermal conversion efficiency, and has potential application value in seawater desalination, wastewater purification, sterilization and the like.

The invention discloses preparation of a CS / BC / MBene composite aerogel material and application of the CS / BC / MBene composite aerogel material in photo-thermal water evaporation. A MoAlB precursor is etched through a fluoride-free hydrothermal method to prepare MoBTxMBene nanosheets, then the MoBTxMBene nanosheets, chitosan (CS) and bacterial cellulose (BC) are assembled through interaction of hydrogen bonds and the like, and the CS / BC / MBene composite aerogel with vertical pore channels is obtained through directional freeze drying. The aerogel has excellent photothermal conversion performance, mechanical strength and hydrophilicity, the maximum surface temperature of the composite aerogel under irradiation of one sunlight reaches 112.3 DEG C, the water evaporation rate of 5.06 kg.m <-2 >. H <-1 > and the photothermal conversion efficiency of 99.76% can be achieved, the composite aerogel is suitable for seawater desalination and sewage purification, the preparation method is environmentally friendly and simple, and the preparation method is suitable for industrial production. And the method has a wide industrial application prospect.

The invention relates to the technical field of biological medicine, in particular to an organic copper ion complex with high photothermal conversion efficiency and preparation and application thereof.The organic copper ion complex is prepared by dissolving reactants in an organic solvent, reacting for a period of time, washing, drying and purifying to obtain pure organic molecules; the novel organic copper ion complex material is obtained by mixing the copper ions with Cu < 2 + >, the light absorption range is expanded from a visible light region to a near-infrared light region, and the material is simple to prepare, shows good near-infrared light absorption capacity, has excellent photo-thermal and copper ion synergistic sterilization capacity and is suitable for popularization and application in the field of biomedicine.

The invention relates to the technical field of building energy conservation and water resource utilization, and discloses a multifunctional AKLBT dual-network hydrogel system and a preparation method and application thereof, the multifunctional AKLBT dual-network hydrogel system comprises AKLBT dual-network hydrogel and a PAN / PVDF coated CNTs / ppy composite photo-thermal layer; wherein the AKLBT dual-network hydrogel takes acrylamide and konjac glucomannan as monomers, and LiCl, BaSO4 and TiO2 are doped into the monomers; the PAN / PVDF-coated CNTs / ppy composite photo-thermal layer is attached to the surface of the hydrogel to construct a photo-thermal conversion interface. Through a three-in-one synergistic mechanism of radiation cooling, adsorption water collection and photo-thermal evaporation, zero-energy-consumption cooling of the building and efficient capture of atmospheric water resources are achieved, stable recycling can be achieved, and an integrated solution is provided for building hydrothermal collaborative management.

The invention provides a photo-thermal direct-heating supercritical carbon dioxide power generation system, belongs to the technical field of supercritical carbon dioxide power generation, and can at least partially solve the problems that the highest temperature of existing fused salt heat storage is about 560 DEG C, the temperature of a heat storage system is low, and the power generation efficiency of supercritical carbon dioxide circulation is limited. The system comprises a photo-thermal conversion module, a pipeline module, a fused salt energy storage module, a water energy storage module and a power generation module, and is provided with a photo-thermal collector, so that the power generation module is directly heated by photo-thermal, the temperature of a working medium in the daytime heat collection period can be directly increased, the efficiency of a supercritical carbon dioxide circulating system is improved, and meanwhile, the heat storage function is taken into account; a more reasonable power generation mode is achieved, and the overall economical efficiency of the system can be improved.

The invention discloses a MoS2-TiO2-polyimide composite film material and a preparation method thereof, and belongs to the technical field of polymer-based composite film materials. According to the preparation method, TiO2 nanowires are vertically grown on the surfaces of MoS2 nanosheets in an in-situ manner through MoS2-TiO2 hybridization, meanwhile, a strong heterojunction structure is constructed, a firm chemical bonding interface is formed, the excellent lubricating property of MoS2 and the excellent wear resistance and high bearing capacity of TiO2 are integrated, and functional complementation and synergistic enhancement are achieved; meanwhile, a polyimide matrix is bridged through a zinc ion coordination bond, the material is endowed with excellent mechanical strength and toughness, and due to the integrated design of lubrication, wear resistance and bearing, the material has the unique advantages of low friction coefficient, high wear resistance and high load at the same time; tests show that the MoS2-TiO2-polyimide composite film material has excellent photothermal conversion performance, mechanical property, thermal property and self-lubricating property.