37 results about "Dual response" patented technology

The invention is suitable for the technical field of electrochemical energy storage, and provides an integrated structure solid-state battery module constructed based on SiO2 aerogel powder and a preparation method of the integrated structure solid-state battery module. And a stress buffering-ion conduction-thermal triggering self-repairing collaborative interface system is constructed. According to the Janus powder, a ZrO2 nanocluster and a SiO2 network form a rigid core, a dynamic shell containing a Diels-Alder dynamic covalent bond is grafted on the outer surface and the inner wall of a pore channel, and a lithium salt-ionic liquid compound is loaded in pores; a vertical columnar stress supporting framework is formed through a transient liquid phase auxiliary cold sintering process, and two-step thermal triggering self-repairing treatment is combined, so that stress buffering of electrode volume change in the charging and discharging process and interface self-repairing in the early stage of thermal abuse are achieved. The interface stability, the cycle life and the thermal safety of the solid-state battery are remarkably improved, and the solid-state battery is suitable for power batteries, high-capacity energy storage batteries and other scenes.

The invention discloses zwitterionic concrete internal curing hydrogel based on humidity-pH dual responsiveness and a preparation method of the zwitterionic concrete internal curing hydrogel, and belongs to the technical field of building materials. The water-based cleaning agent is prepared from the following raw material components in percentage by weight: 6%-8% of N-vinyl imidazole, 8%-12% of 2-methylimidazole, 6%-8% of 2-acrylamido-2-methylpropanesulfonic acid, 2%-4% of sodium p-styrenesulfonate, 26%-30% of acrylic acid, 18%-21% of N-vinyl pyrrolidone, 15%-18% of glycidyl methacrylate, 2%-5% of nano montmorillonite powder, 0.05%-0.1% of divinyl benzene, 0.05%-0.15% of N, N-dimethylformamide and the balance of water. The invention discloses an anti-freezing agent which is prepared from the following components in percentage by weight: 0.1%-0.3% of N, N-methylene bisacrylamide, 0.1%-0.3% of 1-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-methyl-1-propane-1-ketone, 0.5%-0.8% of ammonium persulfate and 0.5%-0.8% of sodium hydrogen sulfite. Double response to the internal humidity and pH value of the concrete can be achieved, and the requirement for precise internal curing of modern high-performance concrete is met.

The application discloses a low-oxygen and pH dual-response nano-carrier, a drug-loaded nanoparticle and application thereof, and belongs to the technical field of biological medicines. The nano-carrier with moderate particle size and low-oxygen and pH dual-response is obtained by using the reaction of aldehyde benzoic acid, nonaethylene glycol and azo-p-phenetidine, the nano-carrier is specifically targeted to a tumor site, and then specifically releases drugs, thereby reducing toxic side effects; meanwhile, after the nano-carrier responds, benzaldehyde groups are released, the benzaldehyde groups are covalently connected with proteins on a lysosome membrane, the structure and activity of the proteins are changed, the lysosome membrane is broken after the proteins are denatured, the permeability of the lysosome membrane is increased, the nano-carrier cannot be discharged to the extracellular, the drug concentration in cells is greatly improved, and the drug bioavailability of the nano-carrier is significantly improved; in addition, the drug loading capacity of the nano-carrier is high, and therefore, the nano-carrier has a good application prospect.

The invention provides a method for preparing a large-area side-chain cholesteric liquid crystal elastomer thin film based on a blade coating method and application of the large-area side-chain cholesteric liquid crystal elastomer thin film. By controlling the content of sulfydryl functional groups in a system and accurately controlling key process parameters such as the blade coating rate and the blade coating temperature in the blade coating process, simple and controllable preparation of a one-pot method is achieved, and the prepared large-area side-chain cholesteric liquid crystal elastomer film has the force-induced discoloration and thermochromism dual response characteristics and is suitable for large-scale production. Wide application prospects are shown in the fields of color-changing materials, strain sensing, intelligent anti-counterfeiting, soft robots and the like, a new thought is provided for controllable preparation of high-performance intelligent response materials, and a new technical route is opened up for manufacturing of large-area customizable functional films.

The invention relates to pH-ROS (potential of hydrogen) double-response type drug-loading dendrimer nanogel as well as a preparation method and application thereof. According to the pH-ROS double-response type drug-loading dendrimer nanogel, G3-PBA-OH is obtained after a G3 PAMAM (polyamidoamine) dendrimer is subjected to functional modification; cross-linking with polyethylene glycol PBA-PEG-PBA with two ends grafted with phenylboronic acid to obtain dendrimer nanogel DNG, and further loading hypoxia activated chemotherapeutic drugs and cytokines on the DNG to obtain the hypoxia activated chemotherapeutic drug-loaded dendrimer nanogel. The DNG prepared by the invention has the characteristics of good biocompatibility, high drug loading rate, pH-ROS dual response and blood brain barrier penetration, provides a new thought for constructing a brain drug delivery nano platform, and can significantly improve the bioavailability of TPZ and IFN-gamma.

The invention discloses a preparation method of a non-Newtonian fluid-based temperature-shear dual response type ophthalmic sustained-release drug carrier, and belongs to the technical field of ophthalmic medicines. The preparation is composed of a dispersed phase (a temperature response type targeting nano-drug carrier) and a continuous phase (a non-Newtonian fluid matrix), wherein the mass fraction of the dispersed phase in the continuous phase is 0.5-2%. The temperature response type targeted nano-drug carrier is of a core-shell two-layer structure, the core is composed of a PLGA-PEG copolymer and an active drug, the shell is formed by grafting poly N-isopropylacrylamide (PNIPAM) and hyaluronic acid, and the lowest critical solution temperature (LCST) of the PNIPAM is 35-37 DEG C; the non-Newtonian fluid matrix is a pseudoplastic fluid, is composed of Carbomer 940 and triethanolamine, and has a shear thinning characteristic. The preparation method comprises the following three steps: preparation of the temperature response type targeting nano-drug carrier, preparation of the non-Newtonian fluid matrix and low-speed dispersion and compounding of the two. According to the invention, shear-response convenient administration, temperature-response precise drug release and long-acting retention synergism are realized, the bioavailability of the drug and the compliance of a patient are remarkably improved, the stability is excellent, the preparation process is simple and controllable, and the preparation method is suitable for long-acting targeted therapy of chronic eye diseases such as allergic conjunctivitis, chronic xerophthalmia, glaucoma and the like.

The application belongs to the field of drug delivery carriers and chemotherapy drugs, and particularly relates to a polymer with a GSH / ROS dual response mechanism, a preparation method and application thereof, and a lipid nanoparticle. The polymer has a GSH / ROS dual response mechanism, and a chemical structure general formula is as shown in the following: A-R-B; A is a first chemical structure with cholesterol or a derivative thereof; R is a second chemical structure with GSH response; and B is a third chemical structure as shown in formula I. Thus, the application endows the polymer with a GSH / ROS dual response mechanism through chemical structure design, and further applies the polymer to a drug delivery system and tumor synergistic treatment, so as to realize a multi-modal synergistic treatment strategy based on the redox dual-response lipid nanoparticle, and provide a new technical scheme with a significant synergistic enhancement effect for malignant tumor treatment.

The invention belongs to the technical field of catalytic degradation, and particularly relates to a Z-type catalyst ZnCo2O4 / FeCo2O4 which is synthesized on the basis of a sol-gel method and has microwave-ultrasonic double response activity as well as a preparation method and application of the Z-type catalyst ZnCo2O4 / FeCo2O4. The ZnCo2O4 / FeCo2O4 nanoparticle catalyst is obtained by adopting a sol-gel method, and antibiotics are degraded by combining a microwave-ultrasonic synergistic effect. As a new method for treating the antibiotic wastewater, the method has the advantages of high degradation efficiency, high speed, low cost, no secondary pollution and the like, is suitable for large-scale treatment of the antibiotic wastewater, and can quickly and thoroughly degrade the antibiotic wastewater in a short time.

The application discloses a FRET fluorescent probe with dual response to acetylcholinesterase and viscosity, a preparation method and application thereof, wherein the structure of the FRET fluorescent probe is shown in the following formula: The fluorescent probe is based on a fluorescence resonance energy transfer (FRET) mechanism, responds to acetylcholinesterase (AChE) at a short wave of 520 nm, and the detection limit is as low as 0.104 U / L, and responds to viscosity at a long wave of 680 nm, and the wavelength difference is as high as 160 nm, and the dual-channel response has no crosstalk. Cell toxicity test shows that the probe has good biocompatibility, and confocal fluorescence microscopic imaging experiment shows that the probe has good light stability for cells, has the ability of simultaneously monitoring the concentration change of AChE in cells and the viscosity fluctuation of cells, and is suitable for confocal fluorescence imaging for tracing the concentration change of AChE in cells and the viscosity fluctuation.

The invention discloses a dual response type intelligent micro-capsule, an anti-icing insulator coating and a preparation process of the anti-icing insulator coating. The micro-capsule adopts a PDMAEMA / ZIF-8 hybrid composite material as a capsule wall, and hydrophobic small molecules and a repairing agent are encapsulated in the micro-capsule. The capsule wall has hierarchical response characteristics: hydrophobic molecules are slowly released daily to maintain super-hydrophobicity; the early warning protection effect is achieved through accelerated release in a weak acid environment; and when strong acid or mechanical damage occurs, the repair agent is broken and released to realize rapid self-healing repair. The microcapsule is used as a functional filler to be compounded with matrixes such as epoxy modified organic silicon resin and the like, and is coated on the surface of an insulator by adopting a spraying and stepped curing process. The problems that the hydrophobic performance of a traditional coating is irreversibly attenuated and the repairing mechanism is single are effectively solved, integrated cooperation of long-acting dynamic maintenance, environment early warning and active repairing is achieved, the anti-icing capacity of an insulator in a severe environment is remarkably improved, and the service life of the insulator in the severe environment is remarkably prolonged.

The application provides a gold nano drug delivery system with pH / NIR-II dual response characteristics and a preparation method thereof, and is prepared by sequentially preparing a gold nanocage (AuNC), a mesoporous silica coated AuNC (AuNC@mSiO2), an amino modified AuNC@mSiO2 (AuNC@mSiO2-NH2), a drug or dye loaded AuNC@mSiO2-NH2 (AuNC@mSiO2-NH2 intersection drug / dye), a PAA coated AuNC@mSiO2-NH2 intersection drug / dye (AuNC@mSiO2@PAA), and finally modifying with PEG and iRGD to obtain the gold nano drug delivery system ASPPR with a core-shell-membrane sandwich structure; the gold nano drug delivery system can realize precise cooperation of photothermal effect and mTOR inhibition in time and space, targets tumor to deliver an mTOR inhibitor first, restores antigen presentation, and then carries out photothermal therapy, so that better treatment conditions are provided for the photothermal therapy, and a combined treatment strategy is optimized.

This invention discloses a dual-response phase change hydrogel material for battery thermal management and its preparation method. The material is composed of water, N-isopropylacrylamide, polyvinyl alcohol, polyethylene glycol, graphene, a crosslinking agent, and an initiator in specific mass percentages. Its core feature is its dual-response characteristics of temperature and pressure: in terms of temperature response, the material undergoes a reversible solid-liquid phase change at approximately 35.2℃ for daily temperature control, and suppresses thermal runaway through a strong endothermic phase change in the 60-80℃ range; in terms of pressure response, the material possesses a piezoresistive effect, which can sensitively detect changes in internal battery pressure and provide early warning. This material also exhibits high thermal conductivity (≥3.7 W / (m·K)), excellent structural stability, and mechanical properties. Its preparation method mainly includes mixing the components, heating and dissolving, mold casting, and ultraviolet curing. This material is particularly suitable for intelligent battery thermal management in electric vehicles, energy storage systems, and other fields, and can significantly improve the safety and reliability of the system.

The invention discloses a pH / temperature dual response type core-shell structure charcoal composite slow-release carbon source as well as a preparation method and application thereof, and belongs to the technical field of functional materials and water body remediation. The method comprises the following steps: dispersing biochar and activated carbon felt fragments in deoxidized water, adding a FeCl2 solution, and slowly dropwise adding a NaBH4 solution for reaction to obtain a composite material; dipping the composite material in a carbon source solution prepared by dissolving starch and sodium acetate in hot water, oscillating and adsorbing at constant temperature, and drying to obtain a core precursor; the preparation method comprises the following steps: dissolving gelatin and sodium alginate in water, sequentially adding N-isopropylacrylamide, N, N '-methylene bisacrylamide and ammonium persulfate, introducing N2 to remove oxygen, and performing prepolymerization to prepare a prepolymerization solution; dispersing the core precursor in the pre-polymerization solution, and dropwise adding the slurry into a CaCl2 cross-linking bath; and reacting and collecting particles to obtain a final product. The system can respond to changes of pH and temperature of a water body environment, intelligently regulate and control a carbon source release behavior, and synergistically remove nitrate, heavy metals and organic pollutants.

The invention relates to the technical field of optical window surface functional coatings, in particular to a method for constructing a waterproof film layer on the surface of an optical window component and optical equipment. The method for constructing the waterproof film layer on the surface of the optical window component comprises the following steps: providing the optical window component; preprocessing the surface of the optical window component to improve the surface energy of the optical window component; providing a temperature and humidity dual response type polymer coating; and carrying out wet-temperature induced spin coating on the surface of the pretreated optical window component to form a film. The waterproof film layer constructed by the invention has excellent waterproof, light-transmitting and environment-adaptive performances, and is suitable for application scenes such as vehicle-mounted, security and industrial cameras.

This invention discloses three methods for reacting with Fe 3+ and Cr 3+ This invention relates to thiophene-containing probes with dual responses and their applications, belonging to the field of organic small molecule fluorescent probes. The probes are labeled FS-1, FS-2, and FS-3. Specifically, probe FS-1, under an excitation spectrum of 555 nm in acetonitrile solution, reacts with Fe... 3+ and Cr 3+ The binding caused a dramatic increase in fluorescence intensity at 584 nm; the FS-2 probe pair, in acetonitrile solution, under an excitation spectrum of 530 nm, reacted with Fe... 3+ and Cr 3+ The binding caused a sharp increase in fluorescence intensity at 555 nm; the FS-3 probe, in acetonitrile solution, under an excitation spectrum of 560 nm, reacted with Fe... 3+ and Cr 3+ The binding caused a sharp increase in fluorescence intensity at 584 nm in the fluorescence spectrum. All three probes were effective against Fe. 3+ and Cr 3+ It has high sensitivity, which is beneficial for detecting food containing these heavy metal ions and for playing a role in environmental monitoring.

The application discloses a photothermal dual-driven logic device based on ferroelectric materials and a preparation method thereof. The photothermal dual-driven logic device comprises a hemispherical substrate and a plurality of detection units arranged in the hemispherical substrate. The photothermal detection unit is composed of a first detector ferroelectric material A and a second detector ferroelectric material B in series. The first detector and the second detector are used to receive a thermal signal and a light signal respectively. The dual response of the ferroelectric material to the thermal signal and the light signal is used to realize logic operation. Compared with a traditional logic device, the device successfully utilizes the light and thermal signals in the natural environment to realize the XOR operation, has lower energy consumption, is simple, has the characteristics of collecting light and thermal signals in different directions, and has better application prospects in the light field and the thermal radiation field.

The application discloses a dual-response co-delivery nano platform for enhancing the radiotherapy effect on tumors, a preparation method and application thereof. The nano platform is formed by coordination self-assembly of metformin and metal cations, can produce dual responses to the low pH and high glutathione (GSH) level unique in the tumor microenvironment, realizes specific release of copper ions and metformin. The released metformin realizes radiotherapy sensitization by regulating mitochondrial respiratory metabolism. Meanwhile, radiotherapy up-regulates the expression of copper death-related proteins FDX1 and LIAS, can synergistically enhance the copper death pathway mediated by copper ions, causes immunogenic death of tumors, and produces a strong immune activation effect to inhibit tumor growth and recurrence and metastasis. The application provides a safe and effective new strategy for overcoming tumor radiotherapy resistance and immunosuppression.

The application discloses a kind of water power and pollutant dual response type nano repair materials and its application;Nano repair material has core-shell-outer layer structure, core provides repair function;Inner shell layer can perceive and respond target pollutant concentration, regulate active release;Outer shell layer can respond groundwater flow rate (shear force), regulate particle migration behavior.Nano repair material of the application can realize "low pollution area stable migration, high pollution area efficient activation", solve the problem of short migration distance of traditional nano repair material, non-target consumption fast, especially suitable for repairing complex groundwater flow affected organic pollution plume.The simultaneously provided repair method and repair system realize the controllability and intelligentization of repair process.

The invention belongs to the technical field of pipeline repair materials, and particularly relates to photocuring-moisture curing dual-response type pipeline lining repair resin and a synthesis method thereof, a lining hose and a preparation method and a construction method thereof. The repair resin comprises the following components in parts by weight: 40-60 parts of matrix resin A; 20 to 35 parts of matrix resin B; 10 to 20 parts of a reactive diluent; 1.5 to 3.0 parts of a photoinitiator A; 0.5 to 1.5 parts of a photoinitiator B; 0.05 to 0.2 part of a moisture sensitive accelerant; 0.5 to 2.0 parts of a coupling agent; 1.0 to 3.0 parts of a thixotropic agent; 0.2 to 0.5 part of an antioxidant; wherein the matrix resin A is an aliphatic polyurethane acrylate prepolymer; the matrix resin B is an isocyanate terminated polyether prepolymer; the photoinitiator A is 2, 4, 6-trimethylbenzoyl-diphenyl phosphine oxide; and the photoinitiator B is 1-hydroxycyclohexyl phenyl ketone. The invention provides photocuring-moisture curing dual-response type pipeline lining repairing resin and a synthesis method thereof, a lining hose and a preparation method and a construction method thereof.

The present invention discloses a magnetic vibration dual-response flower-shaped soft robot, comprising a petal-like structure, a deformation actuation system, a support mechanism, and a torus-like structure. The petal-like structure comprises a rotating wrapped soft skeleton and a thin film elastic body structure; the deformation braking system comprises a magnetorheological elastomer (MRE) and a liquid capsule; the support mechanism is mainly used to connect the petal-like structure, the deformation actuation system, and the torus-like structure; the torus-like structure comprises a torus-shaped cavity with two ends open, a non-magnetic metal vibrator, an elastic film, and a one-way valve. The magnetorheological elastomer contracts and deforms under the action of an external magnetic field in any direction, thereby driving the reversible deformation of the petal structure of the soft robot; the confined fluid in the cavity of the torus-like structure exhibits anisotropic mechanical propulsion behavior under an external vibration field. The purpose of the present invention is to develop a soft robot that can complete controllable movement in a living body and has good biocompatibility through biomimetic design.

The application discloses an intelligent active composite film with fresh-keeping and monitoring functions and a preparation method and application thereof. The preparation method comprises the following steps: limiting and intercepting thymol by spirulina to obtain spirulina loaded with thymol; coating the spirulina loaded with thymol by carboxymethyl chitosan to prepare an intelligent fragrance micro-reactor with pH / humidity dual response characteristics; and performing film forming treatment on a film forming liquid containing konjac glucomannan, blueberry anthocyanin, the intelligent fragrance micro-reactor and water to prepare the intelligent active composite film with the fresh-keeping and monitoring functions. The intelligent active composite film can realize fresh-keeping through active anti-corrosion intervention, has the in-situ freshness real-time diagnosis function and has a good application prospect in novel green food packaging materials.

The invention discloses temperature / mechanical dual response type drug controlled release hydrogel and a preparation method thereof, and belongs to the technical field of biomedical materials. The hydrogel is composed of a PNIPAM hydrogel network formed by cross-linking microgel (MGV) loaded with hydrophobic drugs as a cross-linking agent, and has excellent mechanical properties and intelligent response characteristics. According to the system, the loading efficiency and the tissue infiltration capacity of hydrophobic drugs (such as ketoprofen) are remarkably improved, particularly, cooperative regulation and control of drug release can be achieved under the action of temperature change and compression force, and obvious temperature / mechanical dual response behaviors are shown. Various comprehensive research results show that the temperature / mechanical dual response type hydrogel has a wide application prospect in the field of transdermal drug delivery, can provide an innovative drug delivery scheme for clinical inflammation and pain treatment, and provides a new thought and theoretical basis for design and development of an intelligent controlled release system.

The invention relates to a real-time detection method of an oral dental plaque biofilm based on a Dual-response self-driven micromotor, which starts from real-time detection of pBF, and utilizes particle self-assembly according to the basic principles of self-driven MMS, quantum dot fluorescence'on / off 'sensing, molecular imprinting specific recognition, aptamer specific recognition capability and the like to detect the oral dental plaque biofilm in real time. The method comprises the following steps of: designing and preparing a Janus structure MMS which respectively has fluorescence / speed dual response to quorum sensing signal molecules AI-2 and pathogenic bacteria by means of ion sputtering, chemical surface modification and the like in allusion to the detection of pBF, and modifying a quantum dot-molecularly imprinted polymer on the surface of the MMS, so that the rapid, high-sensitivity and high-specificity detection of the quorum sensing signal molecules AI-2 is realized, and the detection sensitivity of the quorum sensing signal molecules AI-2 is improved. The method comprises the following steps: performing aptamer functional modification on a micromotor and platinum nanoparticles, establishing a positive correlation relationship between the movement speed of MMS and the concentration of pathogenic bacteria, and combining with a portable microscopic device, thereby realizing real-time detection of pBF.

The invention belongs to the technical field of energy conservation and environmental protection, and particularly relates to a pH / ORP (oxidation-reduction potential) double-response type microbial remediation microsphere as well as a preparation method and application thereof. The microbial remediation microspheres disclosed by the invention are prepared by mixing a mixed bacteria suspension and a composite gel solution, and carrying out ionic crosslinking and oxidative crosslinking on the mixed bacteria suspension and the composite gel solution. Wherein the mixed bacteria suspension comprises desulfurization vibrio and citrobacter; the effective components of the composite gel solution comprise xanthan gum, low-fat pectin and rice hull ash. According to the microbial remediation microsphere, the remediation process is automatically and rapidly triggered through the pH and ORP double-response slow release function design, heavy metal is fixed through the biochemical process of functional bacteria, and long-term stabilization and harmlessness of the heavy metal are achieved.

The invention discloses a fluorescent elastic fiber with dual response and a preparation method thereof. The synthesis of the fluorescent polymer and the preparation of the fluorescent elastic fiber are specifically covered. When the environment temperature rises, the fluorescence intensity of the fiber is obviously changed (light response) and is accompanied by reversible shrinkage deformation (mechanical response). Based on the double response characteristics, the method realizes high-sensitivity and visual early warning of temperature abnormity, has potential application value in the fields of industrial equipment overheating monitoring, intelligent protection equipment and the like, and provides a new thought and scheme for development of functional materials and temperature early warning technology.

The invention provides an adenosine triphosphate and nitric oxide dual-response near-infrared fluorescent probe as well as a preparation method and application thereof. The near-infrared fluorescent probe disclosed by the invention has a structure as shown in the formula I, responds to two substances, namely adenosine triphosphate and nitric oxide, and is high in sensitivity and selectivity. # imgabs0 #

The invention relates to the technical field of excavators, and discloses an excavator rotation multistage warning alarm device which comprises an equipment body and a rotation detection device, a warning lamp is fixedly connected to the top of the equipment body, two radar modules are arranged on the two sides of the equipment body, and a camera is arranged in the equipment body; the rotary detection device is located on one side of the interior of the equipment body and comprises a first magnet located above the top of a second magnet and located in the center of the interior of a third magnet, and when the excavator rotates, induction pieces in the rotary detection device sequentially skim over an induction head along with a containing groove; when the sensing head is made of a flexible soft material, a Hall sensor group in the rotary detection device generates a pulse electric signal when the sensing sheet is switched once, the pulse electric signal is transmitted to the central processing unit through a signal conditioning circuit, and the central processing unit executes a dual response mechanism, so that the warning lamp flickers; and people beside the excavator are reminded of avoiding.

The present invention discloses an optimized scheduling method for a hydrogen-integrated energy system considering a stepped green certificate trading mechanism and dual responses of power generation and load, including establishing a carbon capture coupled power-to-gas model; wherein, the carbon capture coupled power-to-gas model includes a CCS model and a P2G model; establishing a stepped green certificate trading model; wherein, the stepped green certificate trading model includes a stepped carbon trading mechanism and a stepped green certificate trading mechanism; establishing a dual response model of power generation and load; wherein, the dual response model of power generation and load includes a flexible response model on the power generation side and a flexible response model on the load side; establishing and solving an HIES optimized scheduling model considering CCS-P2G and dual responses of power generation and load under stepped green certificates. The method proposed by the present invention improves the operation flexibility of the hydrogen-integrated energy system while improving the economy and carbon emission level of the hydrogen-integrated energy system.

The application discloses modified graphite felt with electric heating and photothermal dual response characteristics, a preparation method and application, and comprises a graphite felt matrix, a graphitized multi-walled carbon nanotube conductive photothermal layer loaded on the surface of the graphite felt matrix, and a hydrophobic layer wrapped on the outer surface of the conductive photothermal layer. The composite material has high efficient electric heating conversion and photothermal conversion capacity, can rapidly heat up under power supply and / or illumination to reduce the viscosity of high-viscosity oil, has stable super-hydrophobic characteristics, can realize efficient and selective separation of an oil-water mixture, and is suitable for oil spill recovery in a complex environment, especially in weak light or no light conditions.