CN106885384B - Photothermal conversion element and application of polydopamine - Google Patents
Photothermal conversion element and application of polydopamine Download PDFInfo
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- CN106885384B CN106885384B CN201710070893.0A CN201710070893A CN106885384B CN 106885384 B CN106885384 B CN 106885384B CN 201710070893 A CN201710070893 A CN 201710070893A CN 106885384 B CN106885384 B CN 106885384B
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- photothermal conversion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S70/00—Details of absorbing elements
- F24S70/10—Details of absorbing elements characterised by the absorbing material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The invention provides a photothermal conversion element comprising polydopamine, wherein the polydopamine converts sunlight into heat energy. The invention also provides an application of polydopamine, and the polydopamine is used for a photothermal conversion element to convert sunlight into heat energy. The photothermal conversion element can be widely applied to the field of solar energy development and utilization, such as a seawater desalination device, a solution purification device, a sewage treatment device, a water heater, a dryer, a solar cooker, a heating furnace, a photothermal power generation device or a photoresponse shape memory device.
Description
Technical Field
The invention relates to the field of light conversion, in particular to a photothermal conversion element and application of polydopamine.
Background
The shortage of energy is a long-standing problem for human beings and also an important factor for restricting the economic development of China. The development of new energy, especially clean energy, is an important subject of the present era. Solar energy is used as a clean energy source and has the following characteristics: 1) solar energy is the richest energy which can be developed by human beings and is inexhaustible; 2) the sunlight generally shines all places of the earth, can be developed and utilized on site, and has no transportation problem; 3) solar energy is used as clean energy, and the environment is not polluted and the ecology is not influenced when the solar energy is developed and utilized. The solar energy is mainly utilized by photothermal conversion, photochemical conversion, photoelectric conversion, and the like. The photothermal conversion (i.e., converting solar energy into heat energy) is a shortcut for directly utilizing solar energy, and currently, solar photothermal conversion is applied to water heaters, water purifiers, dryers, solar cookers, high-temperature furnaces, photothermal power generation and the like.
The major obstacle to the application of photothermal conversion is the lack of effective materials for directly converting solar light into heat. Reported materials with photothermal conversion effect comprise carbon nanotubes, graphene, ferroferric oxide, gold nanoparticles and the like, and have many limitations in current research and future practical application, such as difficult preparation, high cost, certain biological toxicity and the like. And part of the material has low absorption of sunlight or low heat conversion capability.
Disclosure of Invention
In view of the above, there is a need for a new photothermal conversion element and application of polydopamine.
A photothermal conversion element comprising polydopamine, which converts sunlight into thermal energy.
Use of polydopamine for a photothermal conversion element for converting sunlight into thermal energy.
The polydopamine is used as a photothermal conversion element and applied to a seawater desalination device, a solution purification device, a sewage treatment device, a water heater, a dryer, a solar cooker, a heating furnace, a photothermal power generation device or a photoresponse shape memory device.
A solar water treatment device comprises the photothermal conversion element.
A solar water heater comprises the photothermal conversion element.
A solar dryer includes the photothermal conversion element.
A solar cooker includes the photothermal conversion element.
A heating furnace includes the photothermal conversion element.
A photothermal power generation device includes the photothermal conversion element.
A seawater desalination device comprises the photothermal conversion element.
A solution purification apparatus includes the photothermal conversion element.
A sewage treatment device comprises the photothermal conversion element.
A photo-responsive shape memory device includes the photo-thermal conversion element.
Compared with the prior art, the photothermal conversion element and the application of polydopamine provided by the invention use polydopamine material as photothermal conversion material, can efficiently convert visible light and sunlight into heat energy, have excellent photothermal conversion performance, have low raw material cost, are simple to prepare, have good biocompatibility and low toxicity of polydopamine, have no secondary pollution in the water treatment process, and have good application prospects in the field of solar energy development and utilization, such as being widely applied to water heaters, water purifiers, dryers, solar cookers, heating furnaces, photothermal power generation, seawater desalination, solution purification, sewage treatment, photoresponse shape memory devices and the like.
Drawings
FIG. 1 is a schematic structural diagram of a solar water treatment device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a solar water heater according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a solar dryer according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a solar cooker according to an embodiment of the present invention;
fig. 5 is a photograph of an infrared thermal image under irradiation of sunlight of the photothermal conversion device of example 1 of the present invention;
fig. 6 is a graph showing a change in water mass due to the application of the photothermal conversion device of example 1 of the present invention to water evaporation;
fig. 7 is a photograph of an infrared thermal image under irradiation of sunlight of the photothermal conversion device of example 2 of the present invention;
fig. 8 is a photograph of an infrared thermal image of the photothermal conversion device of comparative example 1 under irradiation of sunlight;
fig. 9 is a photograph of an infrared thermal image of the photothermal conversion device of comparative example 2 under irradiation of sunlight;
fig. 10 is a photograph of an infrared thermal image of the photothermal conversion device of comparative example 3 under irradiation of sunlight;
fig. 11 is a photograph of an infrared thermal image of the photothermal conversion device of comparative example 4 under irradiation of sunlight;
fig. 12 is a photograph of an infrared thermal image of the photothermal conversion device of comparative example 5 under infrared irradiation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the photothermal conversion element and the application of polydopamine of the present invention are further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the present invention provides a photothermal conversion element including Polydopamine (PDA), which converts sunlight into heat energy.
The polydopamine is a photothermal conversion material, and can convert illumination into heat energy, especially visible light into heat energy, that is, the illumination at least comprises visible light illumination, and also comprises ultraviolet light illumination and infrared light illumination. Preferably, the illumination is solar light.
The shape of the polydopamine is not limited, and may be, for example, a particle, a block, a layered structure, or a porous structure. Pure polydopamine can be directly used as a photothermal conversion element, or polydopamine and other materials can be compounded or stacked to form the photothermal conversion element. In the photothermal conversion element, the content of the polydopamine may be 1% to 100%. The other material may be an organic or inorganic material, such as a polymer layer, a polymer matrix, polymer fibers, metal particles or inorganic non-metal particles.
In one embodiment, the photothermal conversion element further includes a substrate, and the polydopamine is disposed on a surface of the substrate to form a laminated structure, or disposed inside the substrate to form a composite structure.
The substrate is preferably a porous substrate, and the polydopamine can be compounded with the porous substrate, so that the polydopamine-porous substrate composite material has a large specific surface area and can perform photothermal conversion more efficiently. The porous substrate may be selected from, but not limited to, at least one of porous fiber, sponge, fabric, and non-woven fabric. In addition, the porous substrate may also form a flow path for water vapor, enabling the water vapor to evaporate from the micropores of the photothermal conversion element. The photothermal conversion material is attached to the surface of the porous substrate and in the micropores. Preferably, the photothermal conversion material is coated on the surface of each fiber or particle in the porous substrate individually.
The poly-dopamine is a conventional material, and can be obtained by purchase or prepared by a conventional preparation method, for example, by mixing dopamine hydrochloride and tris (hydroxymethyl) aminomethane in water, and stirring and polymerizing at normal temperature. The polydopamine has good adhesion, can be combined with the porous substrate to form a composite material, and is not easy to fall off when meeting water. It is to be understood that the polydopamine is not limited to the preparation by the above-described method, and other existing methods may be used to prepare polydopamine synthetically.
Experiments show that when the mass percentage of the polydopamine in each square meter of the photothermal conversion element is 1 to 3 percentThereby obtaining better photo-thermal conversion effect. The poly-dopamine has a photothermal conversion efficiency of 65% to 72% for visible light having a wavelength of 380nm to 780nm (measured using one solar radiation, light intensity of about 100mW/cm2)。
In a preferred embodiment, in the photothermal conversion element, the photothermal conversion material is formed by polymerizing dopamine monomer on the surface of the porous substrate by in-situ polymerization. The in-situ polymerization method is simple, and the method is implemented by mixing dopamine hydrochloride and tris (hydroxymethyl) aminomethane in water, stirring at normal temperature, soaking the porous substrate in the mixed solution, taking out the porous substrate, and drying the porous substrate.
The embodiment of the invention also provides application of polydopamine, wherein the polydopamine is used for a photothermal conversion element to convert sunlight into heat energy. The polydopamine as a photothermal conversion element can be applied to any field or device requiring conversion of sunlight into heat energy, for example, a seawater desalination device, a solution purification device, a sewage treatment device, a water heater, a dryer, a solar cooker, a heating furnace, a photothermal power generation device, or a photoresponsive shape memory device.
The embodiment of the invention also provides a solar water processor which comprises the photo-thermal conversion element and is used for converting sunlight into heat energy to heat and evaporate water.
Referring to fig. 1, in one embodiment, the solar water treatment device 10 includes the photothermal conversion element 14, a water container 12 to be treated, a water vapor collecting device 16, and a fresh water container 18. The water-to-be-treated container 12 is used for containing the water-to-be-treated 20 and the photothermal conversion element 14. The water vapor collecting device 16 is used for collecting the water vapor evaporated from the water container 12 to be treated and collecting the liquid water formed by the water vapor to the fresh water container 18. The fresh water container 18 is adapted to contain fresh water 22 collected from the water vapor collection device 16. The water container 12 to be treated has an opening formed thereon, the water vapor collecting device 16 is disposed above the water container 12 to be treated, and the water vapor collecting device 16 is capable of transmitting light to the photothermal conversion element 14 in the water container 12 to be treated. The photothermal conversion element 14 can float on the surface of the water 20 to be treated, and is used for converting light energy into heat energy to heat the water 20 to be treated, so that the water 20 to be treated is evaporated.
In one embodiment, the water vapor collecting device 16 is a light-transmitting plate or film, such as a glass plate or plastic cloth, which is disposed in an inclined manner. The lower end of the inclined light-transmitting plate or film is arranged above the fresh water container 18, and the water vapor forms liquid drops after reaching the light-transmitting plate or film, and the liquid drops flow into the fresh water container 18 along the inclined light-transmitting plate or film.
The embodiment of the invention also provides a seawater desalination device (not shown in the figure), which comprises the photothermal conversion element and is used for converting sunlight into heat energy, heating and evaporating seawater and collecting vapor to obtain desalinated water. The seawater desalination apparatus may be similar to the solar water treatment apparatus 10 described above, with the water container 12 to be treated being adapted to receive seawater.
An embodiment of the present invention further provides a solution purification apparatus (not shown), including the photothermal conversion element, for converting sunlight into heat energy, heating and evaporating the solution, and collecting vapor of the solution to obtain a purified solution. The solution purification apparatus may be similar to the solar water treatment apparatus 10 described above, with the water vessel 12 for holding the solution to be purified.
An embodiment of the present invention further provides a sewage treatment apparatus (not shown), including the photothermal conversion element, for converting sunlight into heat energy, heating and evaporating sewage, and collecting water vapor to obtain purified water. The wastewater treatment apparatus may be similar to the solar water treatment apparatus 10 described above, with the water container 12 for holding wastewater to be treated.
The embodiment of the invention also provides a solar water heater, which comprises the photo-thermal conversion element and is used for converting sunlight into heat energy so as to increase the temperature of water.
Referring to fig. 2, in an embodiment, the solar water heater 30 includes a water tank 32, a heat collector 34 connected to the water tank 32, and the photothermal conversion element 36 disposed on a surface of the heat collector 34. The water is heated by the photothermal conversion element 36 inside the heat collector 34.
The embodiment of the invention also provides a solar dryer, which comprises the photo-thermal conversion element and is used for converting sunlight into heat energy and drying an object by heating air.
Referring to fig. 3, in one embodiment, the solar dryer 40 includes a heat collector 42, the photothermal conversion element 44, a drying box 46 and an air extractor 48. The photothermal conversion element 44 is disposed on the surface of the heat collector 42, one end of the interior of the heat collector 42 is communicated with the outside, the other end is communicated with the drying box 46, and air flows through the interior of the heat collector 42 through the air extractor 48 and then enters the drying box 44. The air is heated by the light-to-heat conversion element 44 while passing through the heat collector 42, and the heated air heats the object in the drying box 44 to dry the object. The air extractor 48 may be positioned in the path of the air flow, such as inside, at the end of, or inside the drying box 46 of the heat collector 42.
The embodiment of the invention also provides a solar cooker which comprises the photo-thermal conversion element and is used for converting sunlight into heat energy to heat an object.
Referring to fig. 4, in an embodiment, the solar cooker 50 includes a reflective oven body 51, a bracket 52 connected to the oven body 51, a substrate 53 disposed on the bracket 52 and located at a light converging point formed by the reflective oven body 51, and a photothermal conversion element 54 disposed on a surface of the substrate 53. An object to be heated is placed on the base plate 53, and the photothermal conversion element 54 absorbs the light condensed by the cooking range body 51 to heat the object to be heated.
Embodiments of the present invention further provide a heating furnace (not shown) including the photothermal conversion element, for converting sunlight into heat energy to heat an object. In one embodiment, the heating furnace comprises a furnace body, and the photothermal conversion element is arranged on the outer surface of the furnace body, converts sunlight into heat energy, and heats an object to be heated in the furnace body.
Embodiments of the present invention also provide a photo-responsive shape memory device (not shown), including the photo-thermal conversion element and a shape memory material stacked or uniformly mixed with the photo-thermal conversion element, wherein the photo-thermal conversion element is configured to convert sunlight into heat energy and heat the shape memory material. The shape memory material is capable of changing between at least two predetermined states in response to a change in temperature. The at least two predetermined states may include a temporary state and an original state. The change in state may be a change in shape, position or strain. The shape memory material may be at least one of a shape memory alloy, a shape memory ceramic, and a shape memory polymer.
The embodiment of the invention also provides a photo-thermal power generation device (not shown in the figure), which comprises the photo-thermal conversion element and is used for converting sunlight into heat energy so as to heat the working medium. In an embodiment, the photo-thermal power generation device further comprises a heat collector, a heat engine and a power generator, wherein the photo-thermal conversion element is arranged on the surface of the heat collector and used for heating the working medium in the heat collector, and the heat engine is used for converting the heat energy of the heated working medium into mechanical energy and pushing the power generator to operate to generate current.
Example 1
Dissolving dopamine hydrochloride and trihydroxymethyl aminomethane in water, stirring for a period of time until the water solution becomes pure black, soaking absorbent cotton in the black water solution, shaking or slowly stirring for a period of time until the absorbent cotton is completely blackened, and obtaining the polydopamine composite absorbent cotton. And (3) washing the polydopamine composite absorbent cotton twice with tap water, and drying or naturally drying. The weight percentage of the polydopamine in the polydopamine composite absorbent cotton is about 1 to 3 percent by weight after the polydopamine is compounded.
Referring to fig. 5, the poly-dopamine composite absorbent cotton of example 1 is irradiated under simulated sunlight with a light intensity equivalent to that of one sun (about 100 mW/cm)2) And monitoring the surface temperature in real time by using an infrared thermal imager. After the light irradiation is carried out for 20s, the maximum temperature of the surface of the poly-dopamine composite absorbent cotton is about 83 ℃. Most of the energy in the simulated sunlight is visible light with the wavelength of 380nm to 780nm, and the photothermal conversion efficiency of the polydopamine is 65% to 72%.
Referring to fig. 6, the surface of the poly-dopamine composite absorbent cotton is placed in water, the simulated sunlight is used for irradiating, the light intensity is equivalent to that of the sun, a balance is used for recording real-time data of the system with the change of the mass of the system along with time under the illumination in real time, and the water evaporation rate is found to reach 1.14kg/(m & lt/& gt) & gt/(m & lt/m & gt2H). In FIG. 6, the ordinate isWater weight reduction.
Example 2
A photothermal conversion element was produced in the same manner as in example 1, except that cotton wool was replaced with a polymer plastic.
Referring to fig. 7, the polydopamine composite polymer plastic of example 2 is irradiated under simulated sunlight with a light intensity equivalent to that of one sun, and the surface temperature is monitored in real time by an infrared thermal imager. After the light irradiation is carried out for 20s, the maximum temperature of the surface of the polydopamine composite absorbent cotton is about 65 ℃.
Comparative example 1
A photothermal conversion element was prepared in the same manner as in example 1, except that the polydopamine was replaced with black ink.
Referring to fig. 8, the ink composite absorbent cotton of comparative example 1 was irradiated under simulated sunlight with a light intensity equivalent to that of a sun, and the surface temperature was monitored in real time by an infrared thermal imager. After 20s of illumination, the maximum temperature of the surface of the ink composite absorbent cotton is about 45.4 ℃.
Comparative example 2
A photothermal conversion element was prepared in the same manner as in example 1, except that carbon black was used instead of polydopamine.
Referring to fig. 9, the carbon black composite absorbent cotton of comparative example 2 was irradiated under simulated sunlight with a light intensity equivalent to one sun, and the surface temperature was monitored in real time with an infrared thermal imager. After 20s of illumination, the maximum temperature of the surface of the ink composite absorbent cotton is about 39.5 ℃.
Comparative example 3
A photothermal conversion element was prepared in the same manner as in example 1, except that graphite oxide was used instead of polydopamine.
Referring to fig. 10, the graphite oxide composite absorbent cotton of comparative example 3 was irradiated under simulated sunlight with a light intensity equivalent to that of one sun, and the surface temperature was monitored in real time by an infrared thermal imager. After the light irradiation is carried out for 20s, the maximum temperature of the surface of the graphite oxide composite absorbent cotton is about 43.4 ℃.
Comparative example 4
Referring to fig. 11, pure absorbent cotton is directly irradiated under simulated sunlight with light intensity equivalent to that of the sun, and the surface temperature is monitored in real time by an infrared thermal imager. After 20s of illumination, the maximum temperature of the surface of the absorbent cotton is about 35.7 ℃.
Comparative example 5
Referring to FIG. 12, the poly-dopamine composite absorbent cotton of example 1 is irradiated by pure infrared rays with a light intensity of 100mW/cm2And the wavelength is 808nm infrared laser, and an infrared thermal imager is used for monitoring the surface temperature in real time. After the light irradiation is carried out for 20s, the maximum temperature of the surface of the polydopamine composite absorbent cotton is about 35.8 ℃.
As can be seen from the above examples and comparative examples, the photothermal conversion efficiency of polydopamine to sunlight is much higher than that of the existing commercial black materials such as ink, carbon black and graphite oxide. And the existing materials such as ink, carbon black and graphite oxide are poor in adhesiveness, and even if the materials are attached to absorbent cotton, the materials can fall off completely by slight washing, so that the materials are difficult to be applied practically. The polydopamine can form firm combination with various substrates and is stable and not fall off in water.
The photothermal conversion element and the application of polydopamine provided by the embodiment of the invention use polydopamine material as photothermal conversion material, can efficiently convert visible light and sunlight into heat energy, has excellent photothermal conversion performance, has low raw material cost, simple preparation, good biocompatibility of polydopamine, low toxicity and no secondary pollution in the water treatment process, has good application prospect in the field of solar energy development and utilization, and can be widely applied to the aspects of water heaters, water purifiers, dryers, solar cookers, heating furnaces, photothermal power generation, seawater desalination, solution purification, sewage treatment, photoresponse shape memory devices and the like.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A photothermal conversion element comprises polydopamine and a substrate, wherein the polydopamine is used for converting sunlight into heat energy, the substrate is a porous substrate, the polydopamine is attached to the surface and in micropores of the porous substrate, the photothermal conversion element is used for water treatment, the porous substrate is at least one of porous fibers, a sponge body, a fabric and a non-woven fabric, and the photothermal conversion element can float on water to be treated and heat the water to be treated so as to evaporate the water to be treated.
2. The photothermal conversion element according to claim 1, wherein the polydopamine is in a particle, a bulk, a layered structure, or a porous structure.
3. The photothermal conversion element according to claim 1 wherein the efficiency of photothermal conversion of the polydopamine for visible light having a wavelength of 380nm to 780nm is 65% to 72%.
4. A solar water treatment apparatus comprising the photothermal conversion element as claimed in any one of claims 1 to 3, which is capable of floating on the surface of water to be treated, and is used for converting light energy into heat energy to heat the water to be treated and evaporate the water to be treated.
5. A seawater desalination apparatus comprising the photothermal conversion element according to any one of claims 1 to 3, wherein the photothermal conversion element is capable of floating on the surface of seawater, converting sunlight into heat energy, heating and evaporating the seawater, and collecting water vapor of the seawater to obtain desalinated water.
6. A solution purification apparatus comprising the photothermal conversion element as described in any one of claims 1 to 3, which is capable of floating on the surface of a solution, for converting sunlight into heat energy to heat-evaporate the solution, and obtaining a purified solution by collecting vapor of the solution.
7. A sewage treatment apparatus comprising the photothermal conversion element according to any one of claims 1 to 3, which is capable of floating on the surface of sewage and converting sunlight into heat energy to heat and evaporate the sewage, and purified water is obtained by collecting water vapor of the sewage.
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| CN107604756A (en) * | 2017-08-11 | 2018-01-19 | 桂林电子科技大学 | A kind of paper substrate composite light absorption material for realizing efficient photothermal conversion and preparation method thereof |
| CN108558100B (en) * | 2018-01-10 | 2024-01-26 | 西安工业大学 | Portable solar photo-thermal conversion water treatment purification device |
| CN109422317A (en) * | 2018-02-01 | 2019-03-05 | 深圳大学 | A kind of photo-thermal vapo(u)rization system and preparation method thereof of surface from desalination |
| CN108658352A (en) * | 2018-06-06 | 2018-10-16 | 广东水电二局股份有限公司 | A kind of comprehensive processing method of city domestic sewage |
| CN109987665A (en) * | 2019-04-09 | 2019-07-09 | 苏州大学 | A kind of solar energy sea water desalination apparatus and preparation method thereof based on poly-dopamine and silver nano material |
| CN110816009B (en) * | 2019-10-25 | 2021-06-25 | 武汉理工大学 | Photothermal conversion material and preparation method and application thereof |
| CN111573780B (en) * | 2020-04-09 | 2022-07-01 | 中国科学院宁波材料技术与工程研究所 | Photothermal membrane distiller, preparation method and application thereof, and water treatment equipment |
| CN112898954B (en) * | 2021-01-22 | 2021-11-16 | 武汉纺织大学 | Pleurotus eryngii based photothermal conversion material and preparation method thereof |
| CN113860410B (en) * | 2021-09-30 | 2022-06-10 | 海南大学 | Full-angle solar efficient driving water evaporation bionic material and preparation method thereof |
| CN114715971A (en) * | 2022-04-19 | 2022-07-08 | 浙江大学 | Preparation method and application of solar-driven interface sewage treatment device |
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| CN104479250A (en) * | 2014-12-18 | 2015-04-01 | 首都师范大学 | Multi-functional composite membrane with high photo-thermal conversion efficiency as well as preparation method and application of composite membrane |
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