CN108275737B - Method for desalting seawater based on gas-liquid interface heating - Google Patents

Method for desalting seawater based on gas-liquid interface heating Download PDF

Info

Publication number
CN108275737B
CN108275737B CN201810074225.XA CN201810074225A CN108275737B CN 108275737 B CN108275737 B CN 108275737B CN 201810074225 A CN201810074225 A CN 201810074225A CN 108275737 B CN108275737 B CN 108275737B
Authority
CN
China
Prior art keywords
dust
free paper
seawater
sponge
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201810074225.XA
Other languages
Chinese (zh)
Other versions
CN108275737A (en
Inventor
叶苗苗
甘启茂
张土乔
陈蓉
朱科杭
王迅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang University ZJU
Original Assignee
Zhejiang University ZJU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN201810074225.XA priority Critical patent/CN108275737B/en
Publication of CN108275737A publication Critical patent/CN108275737A/en
Application granted granted Critical
Publication of CN108275737B publication Critical patent/CN108275737B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08—Seawater, e.g. for desalination
    • 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

Abstract

The invention relates to a method for desalinating seawater based on gas-liquid interface heating, which comprises the following steps: 1) dispersing carbon nanotubes in water, and performing ultrasonic treatment to obtain a carbon nanotube suspension; 2) carrying out vacuum filtration on the carbon nanotube suspension on the dust-free paper, and then drying the dust-free paper to obtain carbon nanotube-loaded dust-free paper; 3) the sponge floats on the surface of the seawater to be desalinated after the seawater to be desalinated is sucked, the dust-free paper carrying the carbon nano tubes is attached to the sponge to obtain the carbon nano tube-dust-free paper-sponge which floats on the surface of the seawater to be desalinated, and then illumination distillation is carried out on the sponge to distill the seawater to be desalinated. The method takes the carbon nano tube, the dust-free paper and the sponge as the photo-thermal conversion material, fully utilizes heat energy, reduces heat loss and accelerates seawater distillation.

Description

Method for desalting seawater based on gas-liquid interface heating
Technical Field
The invention relates to the field of seawater desalination, in particular to a method for desalinating seawater based on gas-liquid interface heating.
Background
At present, people more than 1/3 live in water resource shortage areas globally, and the shortage of fresh water resources is becoming serious, which becomes a global environmental problem and even a political problem. Desalination of sea water is considered to be the most practical and effective method for continuously providing a source of fresh water. The seawater desalination method can be divided into an evaporation method, a membrane method, a crystallization method, a solvent extraction method, an ion exchange method and the like according to the separation process, and the most widely practical application mainly comprises the evaporation method (distillation method) and the membrane method.
At present, the most common methods of seawater desalination in engineering are multi-stage flash evaporation and reverse osmosis. However, although the two existing seawater desalination processes have been developed and matured, the two existing seawater desalination processes still have the defect of huge electric energy consumption. The use of electrical energy not only increases the cost of water management, but also causes air pollution and greenhouse effect if coal electricity is used. In addition, the two seawater desalination processes need to establish a complex operation system, and are not suitable for islands and remote areas. In order to reduce energy consumption, clean renewable energy sources such as solar energy, wind energy, geothermal energy and the like are good choices for solving the problem of seawater desalination power. According to the distribution of the solar energy in the world, water-deficient areas have more abundant solar energy resources, so that the desalination of solar seawater becomes one of important means for solving the problem of water resource shortage under the water crisis and environmental pollution predicament.
Research shows that the water evaporation only occurs at the interface of air and water, the same water evaporation effect can be achieved only by heating the surface seawater, and the energy can be greatly saved. Therefore, a solar seawater desalination technology based on 'gas-liquid interface' heating is produced. The technology takes a black material or a noble metal nano material as a photo-thermal conversion material, the photo-thermal conversion material floats on the surface of seawater in various different modes, the seawater on the surface is heated by utilizing the high sunlight absorption rate of the black material or the surface plasma heating effect of the noble metal nano material, and then fresh water is prepared by condensing and evaporating water. However, in the existing "gas-liquid interface" heating technology, when the seawater at the "gas-liquid interface" is heated by solar energy, heat is transferred through the non-evaporated seawater at the lower part, so that heat loss is caused, and the seawater desalination efficiency is reduced.
Disclosure of Invention
The invention aims to provide a method for desalinating seawater based on gas-liquid interface heating, which takes carbon nano tubes, dust-free paper and sponge as a photothermal conversion material, fully utilizes heat energy, reduces heat loss and accelerates seawater distillation.
The technical scheme provided by the invention is as follows:
a method for desalinating seawater based on gas-liquid interface heating comprises the following steps:
1) dispersing carbon nanotubes in water, and performing ultrasonic treatment to obtain a carbon nanotube suspension;
2) carrying out vacuum filtration on the carbon nanotube suspension on the dust-free paper, and then drying the dust-free paper to obtain carbon nanotube-loaded dust-free paper;
3) the sponge floats on the surface of the seawater to be desalinated after the seawater to be desalinated is sucked, the dust-free paper carrying the carbon nano tubes is attached to the sponge to obtain the carbon nano tube-dust-free paper-sponge which floats on the surface of the seawater to be desalinated, and then illumination distillation is carried out on the sponge to distill the seawater to be desalinated.
According to the technical scheme, the carbon nano tube-dust-free paper-sponge is used as the photo-thermal conversion material, so that heat energy can be fully utilized, and heat loss is reduced. The main reason is that the sponge has porosity and heat insulation, the porosity can promote the seawater at the lower part to automatically flow to the surface for heating and evaporation by utilizing the capillary action, and the heat insulation prevents the heat of the carbon nano tube light absorption conversion from being transferred to the non-evaporation part of the lower water body through heat conduction, namely, the generated heat is stored and is used for intensively heating water molecules on a 'gas-water interface', so that the heat energy is fully utilized, and the heat loss is reduced.
In addition, the carbon nano tube particles are large and cannot float on the surface of seawater, and the dust-free paper has porosity and can enhance water absorption by utilizing capillary action, but also cannot float on the surface of the seawater, so that the special structure of the carbon nano tube, the dust-free paper and the sponge is adopted, so that the photothermal conversion material can float on the surface of the seawater, and the heating of a gas-liquid interface is realized.
Preferably, the power of the ultrasonic treatment in the step 1) is 600-700W, and the time is 30-60 min. Under the condition, the carbon nano tubes can be uniformly dispersed, the phenomenon that the carbon nano tubes are not uniform when loaded on the dust-free paper is avoided, and meanwhile, the micro appearance of the carbon nano tubes cannot be excessively damaged.
Preferably, the feeding ratio of the carbon nanotubes to the water in the step 1) is 5-30mg:40 ml. More preferably 5-15mg:40ml, and the use amount of the carbon nano tubes is controlled to avoid the increase of the thickness of the carbon nano tubes on the surface of the dust-free paper due to excessive use amount, so as to prevent the evaporation of water vapor and reduce the evaporation rate of the water.
Preferably, the vacuum degree of the vacuum filtration in the step 2) is-0.015 to-0.02 MPa.
Preferably, the dust-free paper in the step 2) is circular dust-free paper with the diameter of 3-5 cm. The dust-free paper is used as a direct carrier of the carbon nano tube, and the capillary action of the dust-free paper promotes water to automatically flow to the surface to be heated and evaporated, so that the evaporation rate is increased.
Preferably, the shape of the surface of the sponge and the dust-free paper contacted with each other in the step 3) is the same.
Preferably, the sponge in the step 3) is cylindrical polyurethane sponge.
Preferably, in the step 3), a xenon lamp is adopted for illumination, the illumination distance is 6.5-8.5cm, and the illumination intensity is 0.8-6Kw/m 2. Wherein, the illumination distance refers to the distance between a xenon lamp and a carbon nano tube-dust-free paper-sponge.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention takes the carbon nano tube, the dust-free paper and the sponge as the photo-thermal conversion material, fully utilizes the heat energy, reduces the heat loss and accelerates the distillation of the seawater.
(2) The invention adopts a special structure of carbon nano tube-dust-free paper-sponge, so that the photothermal conversion material can float on the surface of seawater, and the heating of a gas-liquid interface is realized.
Drawings
FIG. 1 is a scanning electron micrograph of carbon nanotubes before sonication in example 1;
FIG. 2 is a scanning electron micrograph of the carbon nanotubes after the ultrasonication in example 1;
FIG. 3 is a graph of the mass of evaporated water over time;
FIG. 4 is a graph showing the effect of different amounts of carbon nanotubes on the efficiency of water evaporation;
fig. 5 is a graph showing the effect of different light intensities on the acceleration of seawater evaporation.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
(1) Adding 10mg of granular carbon nanotubes into a 100mL beaker filled with 40mL of artificial seawater, and carrying out ultrasonic crushing in a biosafer650-92 ultrasonic cell crusher to obtain carbon nanotube suspension, wherein the main parameters of the ultrasonic cell crusher are as follows: ultrasonic power 650W, ultrasonic power accuracy 75%, horn (mm)
Figure BDA0001559037750000041
Temperature 30 ℃, ultrasonic wave 5s, interval 5s, total time 60 min. Scanning electron micrographs of carbon nanotubes before and after sonication are shown in FIGS. 1 and 2.
(2) And (3) performing vacuum filtration on the carbon nanotube suspension on circular dust-free paper with the diameter of 4cm (the vacuum degree is between-0.015 and-0.02 MPa), and drying the dust-free paper at room temperature for 24 hours.
(3) Attaching the dried dust-free paper with 10mg of attached carbon nanotubes to the surface of a cylindrical polyurethane sponge (bottom diameter is 4cm, thickness is 2cm) soaked in water, floating the carbon nanotube-dust-free paper-sponge combination on the water surface of a 50ml beaker (diameter is 4cm) filled with artificial seawater, placing the beaker on an electronic balance, keeping the surface of the combination 7.5cm away from a light source, and keeping the illumination intensity of the surface of the combination at 0.8Kw/m2And the light source vertically irradiates the combined surface and the surface of the water body. The irradiation was carried out for 2h and the change in mass due to water evaporation during the irradiation was recorded. The ambient temperature is 25 ℃, the humidity is 40%, and the artificial seawater temperature is 25 ℃.
Comparative example 1
Placing 50ml beaker (diameter 4cm) containing artificial seawater on electronic balance, and keeping the distance between water surface and light source at 7.5cm (the illumination intensity of water surface at this position is 0.8 Kw/m)2) The light source irradiates the surface of the water body vertically. The irradiation was carried out for 2h and the change in mass due to water evaporation during the irradiation was recorded. The ambient temperature is 25 ℃, the humidity is 40%, and the initial temperature of the artificial seawater is 25 ℃.
Comparative example 2
Attaching a dust-free paper without carbon nanotube adhesion to the surface of a cylindrical polyurethane sponge (bottom surface diameter 4cm, thickness 2cm) soaked in water, floating the sponge-dust-free paper combination on the water surface of a 50ml beaker (diameter 4cm) filled with artificial seawater, placing the beaker on an electronic balance, and keeping the surface of the combination 7.5cm away from a light source and the illumination intensity of the surface of the combination at 0.8Kw/m2And the light source vertically irradiates the combined surface and the surface of the water body. The irradiation was carried out for 2h and the change in mass due to water evaporation during the irradiation was recorded. The ambient temperature is 25 ℃, the humidity is 40%, and the artificial seawater temperature is 25 ℃.
Performance test 1
Comparing the mass of the evaporated water with time in example 1, comparative example 1 and comparative example 2, respectively, as can be seen from FIG. 3, when the xenon lamp was irradiated for 2 hours, pure water, a combination of sponge and dust-free paper floating on the surface of pure water, and a combination of sponge, dust-free paper and 10mg of carbon nanotube floating on the surface of pure water evaporated waterThe masses were 1.180g, 1.400g and 2.946g, respectively, i.e. 0.940kgm-2、1.114kgm-2、2.346kgm-2The water evaporation rate is 0.470kgm respectively-2h-1、0.557kgm-2h-1And 1.173kgm-2h-1. The evaporation rate can be seen to promote the evaporation of water when only sponge and dust-free paper are used, but the evaporation rate of water is improved more when the photothermal conversion material carbon nanotube is added, and the evaporation rate can reach 2.5 times of that of pure water.
Examples 2 to 6
(1) Respectively adding 5, 7.5, 10, 15 and 20mg of granular carbon nanotubes into 5 100mL beakers filled with 40mL of artificial seawater, and carrying out ultrasonic crushing in a biosafer650-92 ultrasonic cell crusher to obtain a carbon nanotube suspension, wherein the main parameters of the ultrasonic cell crusher are as follows: ultrasonic power 650W, ultrasonic power accuracy 75%, horn (mm)
Figure BDA0001559037750000061
Temperature 30 ℃, ultrasonic wave 5s, interval 5s, total time 60 min.
(2) And (3) performing vacuum filtration on the carbon nanotube suspension on circular dust-free paper with the diameter of 4cm (the vacuum degree is between-0.015 and-0.02 MPa), and drying the dust-free paper at room temperature for 24 hours.
(3) Attaching the dried dust-free paper with attached carbon nanotubes to the surface of a cylindrical polyurethane sponge (bottom surface diameter is 4cm, thickness is 2cm) soaked in water, floating the sponge-dust-free paper-carbon nanotube combination on the water surface of a 50ml beaker (diameter is 4cm) filled with artificial seawater, placing the beaker on an electronic balance, keeping the distance between the combined surface and a light source to be 7.5cm, and keeping the illumination intensity of the combined surface to be 0.8Kw/m2And the light source vertically irradiates the combined surface and the surface of the water body. The irradiation was carried out for 2h and the change in mass due to water evaporation during the irradiation was recorded. The ambient temperature is 25 ℃, the humidity is 40%, and the artificial seawater temperature is 25 ℃.
Performance test 2
Comparing the mass change of the evaporated water in examples 2 to 6, it can be seen from fig. 4 that sponge + dust-free paper +5mg carbon nanotube combination was floated on the surface of pure water and sponge + dust-free paper +7 was floated on the surface of pure water when the xenon lamp was used for 2 hours of irradiation.The evaporation mass of the water of the combination of 5mg of carbon nanotubes, the combination of sponge, dust-free paper and 10mg of carbon nanotubes floating on the surface of pure water, the combination of sponge, dust-free paper and 15mg of carbon nanotubes floating on the surface of pure water and the combination of sponge, dust-free paper and 20mg of carbon nanotubes floating on the surface of pure water are 2.843g, 2.877g, 2.946g, 2.688g and 2.579g respectively, and the evaporation rate of the water is 1.131kgm-2h-1、1.145kgm-2h-1、1.173kgm-2h-1、1.07kgm-2h-1And 1.027kgm-2h-12.41, 2.44, 2.50, 2.28 and 2.185 times of the pure water evaporation rate, respectively, so that the decrease of the water evaporation rate after a certain increase with the increase of the carbon nanotube content can be obtained, which may be that the increase of the carbon nanotube content can convert more light energy into heat energy, and then the increase of the carbon nanotube content is too thick to prevent the water vapor from volatilizing and escaping, so that the water evaporation rate is decreased, and the effect is best when the carbon nanotube content is about 10 mg.
Example 7
(1) Adding 10mg of granular carbon nanotubes into a 100mL beaker filled with 40mL of artificial seawater, and carrying out ultrasonic crushing in a biosafer650-92 ultrasonic cell crusher to obtain carbon nanotube suspension, wherein the main parameters of the ultrasonic cell crusher are as follows: ultrasonic power 650W, ultrasonic power accuracy 75%, horn (mm)
Figure BDA0001559037750000071
Temperature 30 ℃, ultrasonic wave 5s, interval 5s, total time 60 min.
(2) Carrying out vacuum filtration on the carbon nanotube suspension on circular dust-free paper with the diameter of 4cm (the vacuum degree is-0.015 to-0.02 MPa), and drying the dust-free paper at room temperature for 24 hours;
(3) attaching the dried dust-free paper with 10mg of attached carbon nanotubes to the surface of a cylindrical polyurethane sponge (bottom diameter is 4cm, thickness is 2cm) soaked in water, floating the sponge-dust-free paper-carbon nanotube assembly on the water surface of a 50ml beaker (diameter is 4cm) filled with artificial seawater, placing the beaker on an electronic balance, keeping the surface of the assembly 7.5cm away from a light source, and keeping the illumination intensity of the surface of the assembly at 6Kw/m2And the light source vertically irradiates the combined surface and the surface of the water body.The irradiation was carried out for 2h and the change in mass due to water evaporation during the irradiation was recorded. The ambient temperature is 25 ℃, the humidity is 40%, and the artificial seawater temperature is 25 ℃.
Comparative example 3
Placing 50ml beaker (diameter 4cm) containing artificial seawater on electronic balance, wherein the distance between the water surface and the light source is 7.5cm, and the illumination intensity of the water surface is 6Kw/m2The light source irradiates the surface of the water body vertically. The irradiation was carried out for 2h and the change in mass due to water evaporation during the irradiation was recorded. The ambient temperature is 25 ℃, the humidity is 40%, and the artificial seawater temperature is 25 ℃.
Performance test 3
Comparing the change in the mass of the evaporated water in examples 1 and 7 and comparative examples 1 and 3, respectively, as can be seen from FIG. 5, when the xenon lamp was irradiated for 2 hours, the water evaporation mass of pure water (comparative example 3) and the combination of pure water floating sponge + dust-free paper +10mg of carbon nanotubes on the surface (example 7) were 3.46g and 12.41g, respectively, and the water evaporation rate was 1.377kgm, respectively-2h-1And 4.940kgm-2h-1. From the evaporation rate, when the sponge, the dust-free paper and the 10mg carbon nanotube can promote the obvious water evaporation rate, the evaporation rate can reach 3.59 times of that of pure water and is greatly improved compared with that of the embodiment 1, and the combination can exert the capability of accelerating the water evaporation when the light intensity is higher.

Claims (4)

1. A method for desalinating seawater based on gas-liquid interface heating is characterized by comprising the following steps:
1) dispersing carbon nanotubes in water, and performing ultrasonic treatment to obtain a carbon nanotube suspension; the feeding ratio of the carbon nano tube to the water is 10mg to 40 ml; adopting a biosafer650-92 ultrasonic cell crusher, wherein the ultrasonic power precision is 75%, the diameter of an amplitude transformer is 3mm, the ultrasonic treatment power is 600-700W, and the time is 30-60 min;
2) carrying out vacuum filtration on the carbon nanotube suspension on the dust-free paper, and then drying the dust-free paper to obtain carbon nanotube-loaded dust-free paper; the vacuum degree of vacuum filtration is-0.015 to-0.02 MPa;
3) the sponge floats on the surface of the seawater to be desalinated after the seawater to be desalinated is sucked, the dust-free paper carrying the carbon nano tubes is attached to the sponge, the shapes of the surfaces of the sponge and the dust-free paper which are in mutual contact are the same, the carbon nano tubes-dust-free paper-sponge floating on the surface of the seawater to be desalinated are obtained, and then the seawater to be desalinated is subjected to illumination distillation.
2. The method for desalinating seawater based on gas-liquid interface heating according to claim 1, wherein the dust-free paper in the step 2) is circular dust-free paper with a diameter of 3-5 cm.
3. The method for desalinating seawater based on gas-liquid interface heating according to claim 1, wherein the sponge in step 3) is cylindrical polyurethane sponge.
4. The method for desalinating seawater based on gas-liquid interface heating according to claim 1, wherein the xenon lamp is adopted for illumination in the step 3), the illumination distance is 6.5-8.5cm, and the illumination intensity is 0.8-6Kw/m2。
CN201810074225.XA 2018-01-25 2018-01-25 Method for desalting seawater based on gas-liquid interface heating Active CN108275737B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810074225.XA CN108275737B (en) 2018-01-25 2018-01-25 Method for desalting seawater based on gas-liquid interface heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810074225.XA CN108275737B (en) 2018-01-25 2018-01-25 Method for desalting seawater based on gas-liquid interface heating

Publications (2)

Publication Number Publication Date
CN108275737A CN108275737A (en) 2018-07-13
CN108275737B true CN108275737B (en) 2020-10-30

Family

ID=62805286

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810074225.XA Active CN108275737B (en) 2018-01-25 2018-01-25 Method for desalting seawater based on gas-liquid interface heating

Country Status (1)

Country Link
CN (1) CN108275737B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110746657B (en) * 2018-07-23 2021-08-03 桂林电子科技大学 Preparation method and application of composite biomass aerogel photothermal conversion material
CN109292870A (en) * 2018-10-11 2019-02-01 浙江大学 A kind of difunctional interface distillation component and its application
CN109292869B (en) * 2018-10-11 2021-07-13 浙江大学 Solar seawater desalination device based on gas-liquid interface heating and application
CN109368663A (en) * 2018-12-25 2019-02-22 江苏金羿射日新材料科技有限公司 A kind of acceleration seawater based on optothermal material is evaporated brine device and application method
CN109734148A (en) * 2019-03-20 2019-05-10 菏泽学院 A kind of preparation method and applications of the biomass carbon material for solar energy evaporation water
CN110316894A (en) * 2019-07-22 2019-10-11 北京航空航天大学 Sewage water treatment method and device based on luminous energy
CN110425757B (en) * 2019-07-22 2020-09-18 北京航空航天大学 Solar steam generating device and preparation method and application thereof
CN111704167A (en) * 2020-06-28 2020-09-25 山东大学 MoO regulated and controlled by one-dimensional plasma resonance absorption3-xNanobelt material and application thereof
CN114604922B (en) * 2022-03-18 2022-12-20 浙江大学 Method for desalting water by inhibiting VOCs (volatile organic compounds) from volatilizing through photo-thermal distillation and condensation by using surfactant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1931732A (en) * 2005-09-16 2007-03-21 鸿富锦精密工业（深圳）有限公司 Fresh water generator
CN106256768B (en) * 2016-04-11 2018-10-26 南京大学 A kind of layered body and its preparation method and application
CN106000362B (en) * 2016-05-18 2019-09-27 上海交通大学 Have both laminated film and its preparation and application of photothermal conversion performance and characterization of adsorption
CN107118395B (en) * 2017-06-15 2019-05-24 湖北大学 A kind of carbon-based photothermal conversion film and its preparation method and application and a kind of photothermal conversion device
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

Also Published As

Publication number Publication date
CN108275737A (en) 2018-07-13

Similar Documents

Publication Publication Date Title
CN108275737B (en) Method for desalting seawater based on gas-liquid interface heating
Li et al. Solar-powered sustainable water production: state-of-the-art technologies for sunlight–energy–water nexus
CN107879405B (en) Solar water evaporation purification and decomposition device
CN109266315B (en) Preparation method of carbon dot-based photothermal conversion material
CN113860413B (en) Solar evaporator based on biomass hydrogel/nano carbon material and application thereof
CN112429798B (en) Method for preparing salt-resistant evaporator by assembling nano particles on vertically-arranged fibers
CN108715471B (en) Seawater desalination method based on copper nanoparticle photothermal effect
CN110498464B (en) Photothermal conversion material with carbon nanotube aerogel wood chip double-layer structure
CN108558100B (en) Portable solar photo-thermal conversion water treatment purification device
Qiu et al. Effect of light intensity on solar-driven interfacial steam generation
CN115490285B (en) Chocolate bar-shaped composite solar evaporator and preparation method and application thereof
CN112898610B (en) Flexible metal-organic framework/gelatin composite film and preparation method and application thereof
CN111892742A (en) Photo-thermal conversion polymer solar energy absorption material and preparation method and application thereof
CN113307321A (en) Solar interface evaporator and application thereof
CN115215402A (en) Solar photo-thermal evaporation steam collecting device
Zhu et al. Excellent dual-photothermal freshwater collector with high performance in large-scale evaporation
Zheng et al. Hierarchical CoMn-LDH based photothermal membrane with low evaporation enthalpy and narrow bandgap toward highly efficient Solar-Driven evaporation
Siddiqui et al. Current trends on extraction of water from air: an alternative solution to water supply
Li et al. An efficient interfacial solar evaporator featuring a hierarchical porous structure entirely derived from waste cotton
CN114984776B (en) Reduced graphene oxide layered membrane and preparation method and application thereof
CN110437496B (en) Polysiloxane aerogel composite material for efficient water evaporation and preparation method and application thereof
CN211255332U (en) Solar desalination device of high-efficient all-weather work
CN113716640B (en) Evaporator with double-sided arched flexible carbon film and preparation method thereof
CN111895662A (en) Solar heat collection device with automatic drainage control function
CN113772664B (en) Nickel black-graphene composite photo-thermal conversion film and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant