CN115490285B - Chocolate bar-shaped composite solar evaporator and preparation method and application thereof - Google Patents
Chocolate bar-shaped composite solar evaporator and preparation method and application thereof Download PDFInfo
- Publication number
- CN115490285B CN115490285B CN202211128780.9A CN202211128780A CN115490285B CN 115490285 B CN115490285 B CN 115490285B CN 202211128780 A CN202211128780 A CN 202211128780A CN 115490285 B CN115490285 B CN 115490285B
- Authority
- CN
- China
- Prior art keywords
- shaped composite
- water
- evaporator
- composite solar
- chocolate bar
- 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
Links
- 235000019219 chocolate Nutrition 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000001704 evaporation Methods 0.000 claims abstract description 31
- 230000008020 evaporation Effects 0.000 claims abstract description 31
- 239000004964 aerogel Substances 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 19
- 239000000017 hydrogel Substances 0.000 claims abstract description 15
- 239000000499 gel Substances 0.000 claims abstract description 14
- 239000002121 nanofiber Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000002105 nanoparticle Substances 0.000 claims abstract description 9
- 239000002243 precursor Substances 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000004108 freeze drying Methods 0.000 claims abstract description 4
- 238000002791 soaking Methods 0.000 claims abstract description 4
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 9
- 229910021641 deionized water Inorganic materials 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 9
- 229920001661 Chitosan Polymers 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 5
- 229920000128 polypyrrole Polymers 0.000 claims description 5
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 4
- 239000007900 aqueous suspension Substances 0.000 claims description 4
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- 238000001523 electrospinning Methods 0.000 claims description 2
- 238000001879 gelation Methods 0.000 claims description 2
- 239000012456 homogeneous solution Substances 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 5
- 238000004821 distillation Methods 0.000 abstract description 4
- 238000002835 absorbance Methods 0.000 abstract description 3
- 230000003321 amplification Effects 0.000 abstract 1
- 238000004132 cross linking Methods 0.000 abstract 1
- 230000031700 light absorption Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 239000013589 supplement Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000000746 purification Methods 0.000 description 5
- 239000013535 sea water Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010041 electrostatic spinning Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- 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
-
- 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
-
- 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
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses a chocolate bar-shaped composite solar evaporator and a preparation method and application thereof, wherein the preparation method comprises the following steps: crushing and freeze-drying the nanofiber membrane to form rod-shaped aerogel serving as a matrix; the photo-thermal nano particles are placed in hydrogel precursor liquid to be uniformly dispersed, and the absorbance is improved; and immersing the rod-shaped aerogel in the hydrogel precursor liquid for crosslinking and curing to obtain the chocolate rod-shaped composite solar evaporator with the aerogel matrix and the hydrogel skin layer. The bottom of the evaporator is immersed in water, the outside of the evaporator stretches out of the water surface, the water is transported to the three-dimensional space by utilizing the capillary action of the internal aerogel to supplement the loss in the water gel evaporation process, the evaporation and light absorption area are effectively improved, and the efficient solar evaporation is realized. The invention has simple process and large distillation flux through simple solution soaking polymerization reaction, and can easily realize production amplification.
Description
Technical Field
The invention relates to the field of solar seawater desalination and sewage purification, in particular to a chocolate bar-shaped composite solar evaporator and a preparation method and application thereof.
Background
At the moment of the increasing shortage of energy and water resources, solar energy is taken as a green sustainable energy source, and becomes the focus of energy utilization in the present year, and water purification technology using solar energy is also gradually paid attention. The solar distilled water purifying technology is an effective way for obtaining purified water and fresh water in coastal areas and remote areas at present because of low price and simple collecting mode.
At present, the research on solar evaporation water purification is mainly aimed at improving the solar photo-thermal conversion efficiency to design photo-thermal materials. However, even if the light-heat conversion efficiency reaches 100%, the evaporation flux is still limited by illumination and is maintained at 1.5 kg m -2 ·h -1 Left and right. Further improving the evaporation flux, thereby obtaining the water purification resource more quickly is the current researchIs the main point of (3). The research shows that hydrogel has very high evaporation efficiency as a photo-thermal evaporation material, but has weaker water transportation capacity; when the photo-thermal evaporator is in a three-dimensional space structure, not only the solar energy of a water-vapor interface, but also the solar heat energy in the three-dimensional space can be utilized, so that the evaporation efficiency is improved, but stronger water transportation capacity is needed to transport water into the three-dimensional space. Therefore, the hydrogel is prepared into the three-dimensional evaporator, the common advantages of the two can be utilized, the evaporation flux in the solar distillation process is further improved, and the method becomes a necessary trend of developing and using the solar evaporator in the future.
Disclosure of Invention
The invention mainly solves the problem of low evaporation flux of the existing solar evaporator, and provides the chocolate bar-shaped composite solar evaporator and the preparation method thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a preparation method of a chocolate bar-shaped composite solar evaporator comprises the following steps:
step (1) SiO is reacted with 2 Carrying out electrostatic spinning on the spinning solution, and obtaining SiO 2 Mixing the nanofiber and water in a mass ratio of 2:1-1:2, dispersing, and crushing by using a homogenizer to obtain SiO 2 An aqueous suspension of nanofibers;
step (2) SiO of step (1) 2 Pouring the water suspension of the nanofibers into a copper tube, directionally freezing the copper tube through liquid nitrogen to obtain a longitudinal fiber structure, and then freeze-drying the copper tube for 24h to obtain an aerogel matrix;
pouring the photo-thermal nano particles and adding glutaraldehyde solution into a polyvinyl alcohol/chitosan precursor solution to improve absorbance;
adding hydrochloric acid into the mixed solution obtained in the step (3) to serve as an initiator, uniformly stirring, transferring into a centrifuge tube, and standing for gel treatment;
and (5) in the gel process, placing the aerogel matrix obtained in the step (2) in a centrifuge tube, taking out the aerogel matrix after the gel is completed, and soaking the aerogel matrix in deionized water to obtain the chocolate bar-shaped composite solar evaporator with the pure water gel cortex and the aerogel matrix.
Further, the concentration of the photo-thermal nano particles in the step (3) is 5% of that of the polyvinyl alcohol/chitosan precursor solution.
Further, the photo-thermal nano particles are nano particles with polypyrrole, polyaniline, graphene and carbon nano tubes having photo-thermal conversion capability, and the particle diameter is 20-500 nm.
Further, in the step (5), the gel time is 6 h, and the gel precursor solution of the aerogel matrix is placed in a centrifuge tube for 1/3-2/3 of the total gel time.
A chocolate bar-shaped composite solar evaporator comprises a hydrogel skin layer and an aerogel matrix.
Further, the diameter of the single chocolate bar-shaped composite solar evaporator is 1-10 cm.
The application of the chocolate bar-shaped composite solar evaporator is that the chocolate bar-shaped composite solar evaporator is vertically arranged, the bottom is soaked in raw water to be evaporated, and the upper part is exposed to air.
Furthermore, the part of the chocolate bar-shaped composite solar evaporator exposed to the air accounts for 10-90% of the total length, so that the air contact area of the photo-thermal conversion material is increased, and the effect is optimal.
Further, the horizontal arrangement distance of the chocolate bar-shaped composite solar evaporator is 0-5 cm, so that the space heat energy exchange is increased, and the evaporation effect is optimal.
Compared with the prior art, the invention has the beneficial effects that:
1. the full spectrum absorbance of the chocolate bar-shaped composite solar evaporator prepared by the invention can reach 98%, namely the utilization rate of light is very high.
2. The chocolate rod-shaped composite solar evaporator prepared by the invention has a matrix water contact angle of 0 DEG, namely super-hydrophilicity.
3. The water transport height of the chocolate bar-shaped composite solar evaporator prepared by the invention can reach 10cm, namely the chocolate bar-shaped composite solar evaporator has high water transport capacity.
4. The single chocolate bar-shaped composite solar evaporator prepared by the invention is 1 kW/m 2 The water evaporation rate under the sunlight intensity is 10.6 kg/(m) 2 ·h) -1 Is 6 times the planar evaporation rate. The photo-thermal evaporation efficiency can reach 93%, and the water evaporation efficiency and the photo-thermal conversion efficiency are high.
5. The solar photo-thermal evaporator with the chocolate bars can be matched with various types of distillation devices to obtain the maximum three-dimensional space utilization and higher evaporation collection rate.
6. The collection rate of the purified water of the multiple high-efficiency solar evaporators prepared by the invention can reach 1.6L (m) 2 ·h) -1 4-5 times of the planar photothermal evaporator under the same conditions.
7. The chocolate bar-shaped composite solar evaporator prepared by the invention can be used for desalting sea water, purifying various source waters such as brackish water, high-fluorine water and the like, and can be used in the fields of salt burning zero emission and the like.
8. The distilled water obtained by the chocolate bar-shaped composite solar evaporator prepared by the invention after evaporation has high purity, and can effectively remove various impurities such as inorganic salts, organic matters, bacteria and the like in water, thereby meeting the requirements of world health organization.
Drawings
FIG. 1 is a schematic structural view of a chocolate bar-shaped composite solar evaporator prepared in example 1 of the present invention;
FIG. 2 shows the evaporation rates of chocolate bar-shaped composite solar evaporators of different heights in example 1 of the present invention under light;
FIG. 3 is an arrangement of a plurality of chocolate bar-shaped composite solar evaporators in example 2 of the present invention;
FIG. 4 is a schematic diagram showing the arrangement of chocolate bar-shaped solar evaporators in a distillation collecting device in example 2 of the present invention;
FIG. 5 shows the concentration change of the solution before and after the photothermal conversion material in example 2 of the present invention is used for solar purification of seawater solution;
in the figure, 1, a solar evaporator, 2, an aerogel matrix, 3, a hydrogel skin layer, 4, fixed foam, 5, a collecting device, 6 and raw water.
Detailed Description
The technical solution and effects of the present invention will be further described with reference to the accompanying drawings and specific embodiments, but the scope of the present invention is not limited thereto.
Example 1
The embodiment provides a preparation method of a chocolate bar-shaped composite solar evaporator, which comprises the following specific steps:
step 1): preparation of SiO 2 Nanofiber aerogel matrix
10g of SiO prepared by the electrospinning method are used 2 Mixing the nanofiber with 20 mL deionized water, and pulverizing in a homogenizer for 30min to obtain SiO-containing powder 2 50wt% aqueous suspension of nanofibers; the suspension was poured into a 10cm long copper tube with an inner diameter of 8mm, and a foam barrier was placed at the bottom of the copper tube. Immersing the copper tube in liquid nitrogen and quickly freezing to form the directional duct structure. And then putting the aerogel into a freeze dryer for freeze drying for 24 hours to remove water to obtain the aerogel matrix.
Step 2): preparation of polyvinyl alcohol/chitosan hydrogel cortex
Adding pyrrole monomer into deionized water under ultrasonic to obtain 2 g/L homogeneous solution, adding oxidant FeCl 3 ·6H 2 O (8 g/L), and washing with deionized water after polymerization for 1h to obtain polypyrrole nano particles. Polypyrrole nanoparticles (0.5 g) and 50wt% glutaraldehyde solution (1.25 uL) after room temperature drying were added to 10 wt% polyvinyl alcohol/chitosan (1:0.25) precursor solution of 10 mL. Adding 1mL of 10 wt% hydrochloric acid serving as an initiator into the solution, uniformly stirring, transferring into a 10 mL centrifuge tube, and standing for gel treatment;
step 3): compounding process
Aerogel having a diameter of 0.8 cm and a length of 10cm was placed in a 10 mL centrifuge tube at gel 3 h. And after 6 h gelation is completed, taking out the chocolate bar-shaped composite solar evaporator wrapped with the hydrogel, and soaking in deionized water for 24 hours to obtain pure water gel, as shown in fig. 1.
Fig. 1 is a schematic structural diagram of a chocolate bar-shaped composite solar evaporator 1 prepared in this example, comprising a hydrogel skin 3 and an aerogel matrix 2. The internal matrix structure of the chocolate bar-shaped composite solar evaporator prepared by the embodiment is composed of vertically arranged fibers, and the capillary channels of water are sufficient, so that an effective channel is provided for the three-dimensional evaporator to evaporate and transport water to the hydrogel in the space. The lower part of the evaporator is inserted into raw water 6 through fixed foam 4, and the upper part is exposed in the air, so that the solar energy absorption, conversion and evaporation performance of the evaporator can be effectively improved.
Evaporation experiment:
the chocolate bar-shaped composite solar evaporators 1 with different heights are placed in a 100 mL beaker, fixed in the middle of the beaker by using 2 cm thick fixed foam 4, aerogel 1 cm below the fixed foam 4 is immersed in raw water 6, and the rest part is exposed to air. The beaker is placed on a ten-thousandth electronic balance with a real-time recording function, and a sunlight simulator 1 kW/m is arranged 2 The change of the evaporation capacity in 60 min is recorded in real time. FIG. 2 shows the evaporation rate of 10.6 kg (m) for different exposed heights, when the exposed height is 6 cm 2 ·h) -1 Is one of the evaporators with the highest evaporation rate so far.
Example 2
The chocolate bar-shaped composite solar evaporator with the maximum evaporation rate obtained in example 1 was arrayed as shown in fig. 3. The array evaporation rate varies with array distance. When calculated on the basis of the total area, the evaporation rate per unit area was 2.0 kg (m 2 ·h) -1 Increased to 3.6 kg (m 2 ·h) -1 . With the increase in x, the evaporation rate per unit area decreases as the floor space begins to become larger.
Example 3
The chocolate bar-shaped composite solar evaporator with the maximum evaporation rate obtained in the example 2 is placed into a sloping plate evaporator as shown in fig. 4 for outdoor seawater evaporation experimental test, and is collected by a collecting device 5, wherein the collecting device 5 is of an inverted trapezoid structure, the upper surface is an inclined plane, and as shown in fig. 5, four main ions Na are taken from seawater of the Bohai sea + 、K + 、Mg 2+ 、Ca 2+ The corresponding concentration is reduced by more than 98 percent, and the salinity is far lower than the salinity standard of drinking water regulated by the world health organization and the environmental protection agency. The collection rate of the purified water can reach 1.8L (m) 2 ·h) -1 Is 4 times of a planar photothermal evaporator under the same conditions.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A chocolate bar-shaped composite solar evaporator with high evaporation rate is characterized by comprising a polyvinyl alcohol/chitosan hydrogel skin layer and SiO 2 A nanofiber aerogel matrix;
the preparation method of the chocolate bar-shaped composite solar evaporator comprises the following steps of:
step 1): preparation of SiO 2 Nanofiber aerogel matrix
10g of SiO prepared by the electrospinning method are used 2 Mixing the nanofiber with 20 mL deionized water, and pulverizing in a homogenizer for 30min to obtain SiO-containing powder 2 50wt% aqueous suspension of nanofibers; pouring the suspension into a copper pipe with the inner diameter of 8mm and the length of 10cm, and placing foam barriers at the bottom of the copper pipe; immersing the copper pipe into liquid nitrogen and rapidly freezing to form a directional duct structure; then putting the aerogel into a freeze dryer for freeze-drying for 24 hours to remove water to obtain an aerogel matrix;
step 2): preparation of polyvinyl alcohol/chitosan hydrogel cortex
The pyrrole monomer is put under ultrasoundAdding deionized water to obtain 2 g/L homogeneous solution, adding 8 g/L oxidant FeCl 3 ·6H 2 O, washing with deionized water after polymerization for 1h to obtain polypyrrole nano particles; 0.5 g of polypyrrole nanoparticles dried at room temperature and 1.25 uL of 50wt% glutaraldehyde solution were added to 10 wt% polyvinyl alcohol/chitosan (1:0.25) precursor solution of 10 mL; adding 1mL of 10 wt% hydrochloric acid serving as an initiator into the solution, uniformly stirring, transferring into a 10 mL centrifuge tube, and standing for gel treatment;
step 3): compounding process
Putting aerogel with the diameter of 0.8 cm and the length of 10cm into a 10 mL centrifuge tube in the process of gel 3 h, taking out a chocolate bar-shaped composite solar evaporator wrapped with hydrogel after 6 h gelation is completed, and soaking in deionized water for 24 hours to obtain pure water gel;
the internal matrix structure of the chocolate bar-shaped composite solar evaporator consists of vertically arranged fibers, and the capillary channels of water are sufficient, so that an effective channel is provided for the three-dimensional evaporator to evaporate and transport water to the hydrogel in the space;
the application method of the chocolate bar-shaped composite solar evaporator comprises the following steps: the chocolate bar-shaped composite solar evaporators with different heights are arranged in a 100 mL beaker in a standing manner, the chocolate bar-shaped composite solar evaporators are fixed in the middle of the beaker by using 2 cm thick fixed foam, aerogel 1 cm below the fixed foam is immersed in raw water, and the rest part of the fixed foam is exposed to air; the beaker is placed on a ten-thousandth electronic balance with a real-time recording function, and a sunlight simulator 1 kW/m is arranged 2 The change of the evaporation capacity in 60 min is recorded in real time, and the evaporation rate reaches 10.6 kg (m) when the exposure height is 6 cm 2 ·h) -1 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211128780.9A CN115490285B (en) | 2022-09-16 | 2022-09-16 | Chocolate bar-shaped composite solar evaporator and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211128780.9A CN115490285B (en) | 2022-09-16 | 2022-09-16 | Chocolate bar-shaped composite solar evaporator and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115490285A CN115490285A (en) | 2022-12-20 |
| CN115490285B true CN115490285B (en) | 2024-04-05 |
Family
ID=84467786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211128780.9A Active CN115490285B (en) | 2022-09-16 | 2022-09-16 | Chocolate bar-shaped composite solar evaporator and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115490285B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115435523B (en) * | 2022-07-20 | 2023-07-07 | 浙江师范大学 | Solid-state passive evaporative cooling system and method |
| CN116161729B (en) * | 2023-04-23 | 2023-08-29 | 江苏恒力化纤股份有限公司 | Solar drive vapor generation device with wind power assisted enhancement |
| CN117599435B (en) * | 2023-11-09 | 2024-06-14 | 海南大学 | Solar interface evaporator based on amyloid plant protein fiber aerogel and preparation method and application thereof |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004347091A (en) * | 2003-05-26 | 2004-12-09 | Mitsubishi Chemicals Corp | Heat insulation material and heat insulation body using this material |
| CN105713239A (en) * | 2016-01-29 | 2016-06-29 | 江苏时空涂料有限公司 | Preparation method of silicon dioxide and bamboo nanocellulose composite aerogel |
| CN109052415A (en) * | 2018-09-10 | 2018-12-21 | 西南科技大学 | Aerosil and preparation method thereof based on MTMS |
| CN109111591A (en) * | 2018-08-24 | 2019-01-01 | 郑州大学 | It is a kind of carry medicine styptic sponge preparation method and its preparation load medicine styptic sponge |
| CN110734575A (en) * | 2019-10-25 | 2020-01-31 | 桂林电子科技大学 | Preparation method and application of aerogel-polypyrrole photothermal conversion materials |
| CN110756129A (en) * | 2019-11-01 | 2020-02-07 | 南京林业大学 | Method for preparing nanofiber aerogel composite material |
| CN111116976A (en) * | 2019-12-30 | 2020-05-08 | 东华大学 | Nanofiber aerogel-based solar water evaporator and preparation method thereof |
| CN111171340A (en) * | 2019-12-25 | 2020-05-19 | 浙江浙能技术研究院有限公司 | Photo-thermal evaporation material based on PVA hydrogel and preparation and application thereof |
| CN111239434A (en) * | 2019-07-30 | 2020-06-05 | 南京凯盟仕电子科技有限公司 | Velocity measurement sensor containing explosion-proof material and preparation method thereof |
| CN112940643A (en) * | 2021-01-20 | 2021-06-11 | 南京师范大学 | Double-polymer gel material and preparation method and application thereof |
| CN113603935A (en) * | 2021-06-25 | 2021-11-05 | 浙江大学 | Composite aerogel with Janus characteristics and preparation method and application thereof |
| WO2021242705A1 (en) * | 2020-05-24 | 2021-12-02 | Matregenix, Inc. | System and method for solar-powered desalination and water purification |
| CN215962168U (en) * | 2021-10-14 | 2022-03-08 | 南京宁智高新材料研究院有限公司 | Vertical photo-thermal evaporator with wind resistance, uniform water supply and blockage prevention |
| CN114349519A (en) * | 2022-01-19 | 2022-04-15 | 江苏宝利金材科技有限公司 | Slurry formula and production process of gel-casting ceramic filter |
| CN114506892A (en) * | 2022-02-18 | 2022-05-17 | 天津海特热管理科技有限公司 | Photo-thermal interface evaporator and preparation method and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101187568B1 (en) * | 2010-09-29 | 2012-10-04 | 한국에너지기술연구원 | Preparation method of silica aerogel granules |
-
2022
- 2022-09-16 CN CN202211128780.9A patent/CN115490285B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004347091A (en) * | 2003-05-26 | 2004-12-09 | Mitsubishi Chemicals Corp | Heat insulation material and heat insulation body using this material |
| CN105713239A (en) * | 2016-01-29 | 2016-06-29 | 江苏时空涂料有限公司 | Preparation method of silicon dioxide and bamboo nanocellulose composite aerogel |
| CN109111591A (en) * | 2018-08-24 | 2019-01-01 | 郑州大学 | It is a kind of carry medicine styptic sponge preparation method and its preparation load medicine styptic sponge |
| CN109052415A (en) * | 2018-09-10 | 2018-12-21 | 西南科技大学 | Aerosil and preparation method thereof based on MTMS |
| CN111239434A (en) * | 2019-07-30 | 2020-06-05 | 南京凯盟仕电子科技有限公司 | Velocity measurement sensor containing explosion-proof material and preparation method thereof |
| CN110734575A (en) * | 2019-10-25 | 2020-01-31 | 桂林电子科技大学 | Preparation method and application of aerogel-polypyrrole photothermal conversion materials |
| CN110756129A (en) * | 2019-11-01 | 2020-02-07 | 南京林业大学 | Method for preparing nanofiber aerogel composite material |
| CN111171340A (en) * | 2019-12-25 | 2020-05-19 | 浙江浙能技术研究院有限公司 | Photo-thermal evaporation material based on PVA hydrogel and preparation and application thereof |
| CN111116976A (en) * | 2019-12-30 | 2020-05-08 | 东华大学 | Nanofiber aerogel-based solar water evaporator and preparation method thereof |
| WO2021242705A1 (en) * | 2020-05-24 | 2021-12-02 | Matregenix, Inc. | System and method for solar-powered desalination and water purification |
| CN112940643A (en) * | 2021-01-20 | 2021-06-11 | 南京师范大学 | Double-polymer gel material and preparation method and application thereof |
| CN113603935A (en) * | 2021-06-25 | 2021-11-05 | 浙江大学 | Composite aerogel with Janus characteristics and preparation method and application thereof |
| CN215962168U (en) * | 2021-10-14 | 2022-03-08 | 南京宁智高新材料研究院有限公司 | Vertical photo-thermal evaporator with wind resistance, uniform water supply and blockage prevention |
| CN114349519A (en) * | 2022-01-19 | 2022-04-15 | 江苏宝利金材科技有限公司 | Slurry formula and production process of gel-casting ceramic filter |
| CN114506892A (en) * | 2022-02-18 | 2022-05-17 | 天津海特热管理科技有限公司 | Photo-thermal interface evaporator and preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115490285A (en) | 2022-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115490285B (en) | Chocolate bar-shaped composite solar evaporator and preparation method and application thereof | |
| Storer et al. | Graphene and rice-straw-fiber-based 3D photothermal aerogels for highly efficient solar evaporation | |
| Li et al. | Solar-powered sustainable water production: state-of-the-art technologies for sunlight–energy–water nexus | |
| Zhang et al. | Direct solar steam generation system for clean water production | |
| Chen et al. | Recent progress in solar photothermal steam technology for water purification and energy utilization | |
| Huang et al. | Review of interface solar-driven steam generation systems: High-efficiency strategies, applications and challenges | |
| CN205717132U (en) | A kind of device producing steam based on photothermal deformation | |
| CN108275737B (en) | Method for desalting seawater based on gas-liquid interface heating | |
| Bai et al. | Interfacial solar evaporation for water production: from structure design to reliable performance | |
| Wang et al. | A self-floating and integrated bionic mushroom for highly efficient solar steam generation | |
| Liu et al. | Overcoming salt crystallization during solar desalination based on diatomite-regulated water supply | |
| CN113860413B (en) | Solar evaporator based on biomass hydrogel/nano carbon material and application thereof | |
| CN112707391B (en) | Self-water-supply type light hot water evaporation device based on composite hydrogel | |
| Hou et al. | 3D carbonized grooved straw with efficient evaporation and salt resistance for solar steam generation | |
| Peng et al. | Directional solution transfer of a 3D solar evaporator inhibiting salt crystallization | |
| Guo et al. | Double-layered montmorillonite/MoS2 aerogel with vertical channel for efficient and stable solar interfacial desalination | |
| Zhang et al. | Dual-layer multichannel hydrogel evaporator with high salt resistance and a hemispherical structure toward water desalination and purification | |
| Zhu et al. | Excellent dual-photothermal freshwater collector with high performance in large-scale evaporation | |
| Fan et al. | A siphon-based spatial evaporation device for efficient salt-free interfacial steam generation | |
| Sun et al. | Optimal design for floating solar still by structural modification: A review | |
| Li et al. | Photothermal Diatomite/Carbon Nanotube Combined Aerogel for High‐Efficiency Solar Steam Generation and Wastewater Purification | |
| Li et al. | Aerogel-based solar interface evaporation: Current research progress and future challenges | |
| Zhong et al. | Salt-resistant carbon aerogel with hierarchical interconnected channels for continuous and efficient solar evaporation of hypersaline water | |
| Li et al. | An efficient interfacial solar evaporator featuring a hierarchical porous structure entirely derived from waste cotton | |
| Li et al. | Ultrahigh solar vapor evaporation rate of super-hydrophilic aerogel by introducing environmental energy and convective flow |
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 |