CN112108084A - Preparation method of hydrogel with hierarchical pore structure for accelerating solar water evaporation - Google Patents
Preparation method of hydrogel with hierarchical pore structure for accelerating solar water evaporation Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000000017 hydrogel Substances 0.000 title claims abstract description 40
- 239000002149 hierarchical pore Substances 0.000 title claims abstract description 32
- 238000001704 evaporation Methods 0.000 title claims abstract description 31
- 230000008020 evaporation Effects 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 22
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 15
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 claims abstract description 13
- 235000018417 cysteine Nutrition 0.000 claims abstract description 13
- 239000000243 solution Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000007864 aqueous solution Substances 0.000 claims abstract description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 8
- 239000002243 precursor Substances 0.000 claims abstract description 8
- 239000008367 deionised water Substances 0.000 claims abstract description 7
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000000126 substance Substances 0.000 claims abstract description 6
- 239000011259 mixed solution Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims abstract description 5
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims abstract description 3
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 3
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims description 23
- 238000001723 curing Methods 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000003760 magnetic stirring Methods 0.000 claims description 3
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 150000001299 aldehydes Chemical class 0.000 claims description 2
- 238000013007 heat curing Methods 0.000 claims description 2
- 238000010907 mechanical stirring Methods 0.000 claims description 2
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005303 weighing Methods 0.000 abstract description 3
- 230000031700 light absorption Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000001029 thermal curing Methods 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 239000013535 sea water Substances 0.000 description 5
- 238000010612 desalination reaction Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 150000004770 chalcogenides Chemical class 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 239000002082 metal nanoparticle Substances 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0065—Preparation of gels containing an organic phase
-
- 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
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
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Abstract
The invention provides a preparation method of a hydrogel with a hierarchical pore structure for accelerating solar water evaporation. The method comprises the following steps: (1) firstly, fully mixing Graphene Oxide (GO) and cysteine in deionized water, and uniformly stirring. Then dissolving copper chloride (CuCl) with a certain concentration2) Adding the solution into a mixed solution of GO and cysteine, finally transferring the solution into a hydrothermal reaction kettle for reaction for a certain time, and finally washing the solution clean; (2) weighing a certain amount of polyvinyl alcohol, adding the polyvinyl alcohol into a proper amount of water to prepare a polyvinyl alcohol aqueous solution with a certain concentration; (3) adding the CuS/rGO photothermal conversion material prepared in the step (1), a cross-linking agent and a catalyst into the step (2) to uniformly mix the materials; (4) transferring the precursor obtained in the step (3) into a mold, and performing thermocuring molding; (5) the multi-stage pore hydrogel obtained in the step (4) is deionizedThe water cleans the excess substances. Thus obtaining the hydrogel with the hierarchical pore structure for accelerating the solar water evaporation. The novel hydrogel has excellent light absorption capacity, can accelerate the rapid evaporation of water, has excellent mechanical properties and water retention rate, and can meet the actual production requirements. In addition, the method has simple process and low cost, and can be put into practical production and application on a large scale.
Description
Technical Field
The invention relates to the field of functional materials, in particular to a preparation method of a hydrogel with a hierarchical pore structure for accelerating solar water evaporation.
Background
At present, over one third of the population in the world is short of fresh water resources, and the current situation of water resource shortage is aggravated along with population growth, industrialization and environmental pollution. Because the total amount of water is constant and 97% of the water on earth is made up of seawater, desalination-is currently the most effective solution. The seawater desalination method mainly comprises a distillation method, a reverse osmosis method, an electrodialysis method and a solar distillation method. The first three methods all need additional energy consumption to realize seawater desalination, and the solar distillation method does not consume conventional energy and has no pollution, so that the method is a great direction for seawater desalination development in the future. The photothermal conversion material is an important medium for efficiently utilizing solar energy for seawater desalination. In order to improve the solar energy utilization efficiency, ultra black absorbers, noble metal nanoparticles, thermally condensed ceramics, and the like have been developed. Fu et al (Applied Thermal Engineering, 2017, 114, 961-968) et al enable the composite material prepared by loading Au on graphene oxide to effectively improve the photo-Thermal conversion efficiency, but the composite material has high cost and is not easy to produce in a large scale. Therefore, a high-efficiency and low-cost photothermal conversion material is urgently needed to be developed. In addition, only water evaporation is effective in three main heat consuming processes of water heating, parasitic heat loss and water evaporation. Therefore, a heat localization strategy is essential in solar vapor generation systems, and limiting the heat to a small amount of moisture in the evaporation surface may greatly improve the efficiency of solar energy utilization.
Nanometer copper sulfide (CuS) belongs to P type semiconductor photo-thermal materials, and the principle of photo-thermal conversion is as follows: under illumination, the defect structure of the CuS particles can cause surface carrier migration, so that a plasma resonance effect similar to that of the noble metal nanoparticles is formed to generate heat. The plasma resonance effect of the chalcogenide copper-based compound is not directly related to the morphology of the chalcogenide copper-based compound, but depends on the concentration of free carriers, so that the stability of the solar photothermal conversion performance of the chalcogenide copper-based compound is higher. However, the CuS nanoparticles are easy to agglomerate in water, and the GO carbon layer is rich in functional groups such as epoxy groups, hydroxyl groups and carboxyl groups, and has a large specific surface area, so that the CuS nanoparticles can be used as a support material of the CuS nanoparticles. The novel copper sulfide/reduced graphene oxide (CuS/rGO) photothermal conversion material is obtained through a hot water reaction at a certain temperature. Compared with noble metal nanoparticles, the CuS/rGO is low in cost, easy to prepare and suitable for large-scale production and application.
The polyvinyl alcohol has good hydrophilicity, and the prepared novel photothermal conversion material is uniformly dispersed in a PVA solution with a certain concentration, so that heat can be well concentrated in the composite hydrogel with a porous structure, thereby reducing heat loss and improving photothermal conversion efficiency.
Disclosure of Invention
The invention aims to provide a preparation method of a hydrogel with a hierarchical pore structure for accelerating solar water evaporation.
In order to realize the purpose, the invention adopts the technical scheme that: adding the prepared novel copper sulfide/reduced graphene oxide photothermal conversion material powder or dispersion liquid into a polyvinyl alcohol aqueous solution with a certain concentration, adding a cross-linking agent and a catalyst to enable the mixed solution to be cross-linked, thermocured and molded, and further preparing the solar water evaporation accelerating hydrogel with the hierarchical pore structure. The novel hydrogel has excellent light absorption capacity, can accelerate the rapid evaporation of water, has excellent mechanical properties and water retention rate, and can meet the actual production requirements. In addition, the method has simple process and low cost, and can be put into practical production and application on a large scale. The method specifically comprises the following steps:
(1) preparing a copper sulfide/reduced graphene oxide (CuS/rGO) novel photo-thermal conversion material: firstly, fully mixing Graphene Oxide (GO) and cysteine in deionized water, and uniformly stirring. Then dissolving copper chloride (CuCl) with a certain concentration2) Solution addition to GAnd transferring the mixed solution of O and cysteine to a hydrothermal reaction kettle for reaction for a certain time, and finally washing with water.
(2) Preparation of aqueous polyvinyl alcohol solution: a certain amount of polyvinyl alcohol is weighed and added into a proper amount of water to prepare a polyvinyl alcohol aqueous solution with a certain concentration.
(3) Preparing a precursor: and (3) adding the CuS/rGO photothermal conversion material prepared in the step (1), a cross-linking agent and a catalyst into the step (2) and uniformly mixing.
(4) Curing and forming of the hydrogel: and (4) transferring the precursor obtained in the step (3) into a mold, and performing heat curing molding.
(5) Cleaning the hydrogel: and (4) washing the multi-pore hydrogel obtained in the step (4) with deionized water to clean the redundant substances.
According to the mass ratio of the prepared novel photo-thermal conversion material CuS/rGO, the ratio of graphene oxide to copper chloride is 1: 5-1: 3; copper chloride and cysteine are 1: 1-1: 3.
The polyvinyl alcohol type used in the polyvinyl alcohol aqueous solution comprises 1799 type, 2699 type and the like, accounts for 5-15% of the mass fraction of the aqueous solution, and the stirring time is 20-100 min.
According to the mass ratio, the novel photothermal conversion material copper sulfide/reduced graphene oxide and polyvinyl alcohol in the preparation of the precursor are 1: 5-1: 3, the mass fraction of the cross-linking agent is 5-10%, and the mass of the catalyst is 5-10%.
The cross-linking agent is one or more of aldehydes such as formaldehyde, glutaraldehyde and the like.
The catalyst is one or more of hydrochloric acid, sulfuric acid and other acidic substances.
The dispersion mode is one or more of stirring paddle mechanical stirring, magnetic stirring and ultrasonic dispersion, and the dispersion time is 5-20 min.
The temperature of the thermosetting molding is 40-80 ℃, and the curing time is 3-10 h.
Description of the drawings:
FIG. 1 is a scanning electron microscope image of the internal topography of the hydrogel with the hierarchical pore structure accelerating solar water evaporation in example 1;
FIG. 2 shows the change in mass of pure water in sunlight and the change in mass of water with a multi-stage pore hydrogel in sunlight.
The specific implementation method comprises the following steps:
for a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Therefore, it is within the scope of the present invention to design the structure and the embodiments similar to the technical solutions without various inventive changes or modifications without departing from the spirit of the present invention.
Example 1:
(1) preparing a copper sulfide/reduced graphene oxide (CuS/rGO) novel photo-thermal conversion material: weighing 0.75g of cysteine, mixing with 30g of graphene oxide dispersion liquid with the mass fraction of 0.5%, completely dissolving the cysteine through magnetic stirring, slowly adding 0.75g of copper chloride while stirring, stirring until the mixture is uniformly mixed, transferring the mixed solution into a reaction kettle, reacting for 15 hours at 150 ℃, and cleaning the reacted substances with deionized water to obtain copper sulfide/reduced graphene oxide photothermal conversion material powder;
(2) preparation of aqueous polyvinyl alcohol solution: weighing 1g of polyvinyl alcohol, adding into 19g of water, and dissolving in a water bath at 95 ℃ for 2h until the polyvinyl alcohol is transparent;
(3) preparing a precursor: adding 0.2g of the novel photothermal conversion material prepared in the step (1) into the step (2), respectively adding 3g of formaldehyde and 3g of a 50% sulfuric acid aqueous solution at 50 ℃, and stirring for 5 min;
(4) curing and forming of the hydrogel: transferring the precursor prepared in the step (3) into a mold, and thermally curing at 60 ℃ for 3 h;
(5) cleaning the hydrogel: and (4) cleaning the hydrogel formed by curing in the step (4) by using deionized water to obtain the hydrogel with the hierarchical pore structure for accelerating solar water evaporation.
Example 2:
the mass of cysteine in the step (1) of the example 1 is adjusted to be 1g, and the rest is the same as that of the example 1, so that the hydrogel with the hierarchical pore structure for accelerating solar water evaporation can be obtained.
Example 3:
the mass of the copper chloride in the step (1) in the example 1 is adjusted to be 1g, and the rest is the same as that in the example 1, so that the hydrogel with the hierarchical pore structure for accelerating solar water evaporation can be obtained.
Example 4:
the temperature in the step (1) of the example 1 is adjusted to be 110 ℃, and the rest is the same as that in the example 1, so that the hydrogel with the hierarchical pore structure for accelerating solar water evaporation can be obtained.
Example 5:
the mass of the polyvinyl alcohol in the step (2) of the example 1 is adjusted to be 2g, and the rest is the same as that of the example 1, so that the hydrogel with the hierarchical pore structure for accelerating solar water evaporation can be obtained.
Example 6:
the mass of cysteine in the step (2) of the example 1 is adjusted to be 3g, and the rest is the same as that of the example 1, so that the hydrogel with the hierarchical pore structure for accelerating solar water evaporation can be obtained.
Example 7:
the mass of cysteine in the step (3) of the example 1 is adjusted to be 0.4g, and the rest is the same as that of the example 1, so that the hydrogel with the multilevel pore structure for accelerating solar water evaporation can be obtained.
Example 8:
the formaldehyde in the step (3) of the embodiment 1 is adjusted to be glutaraldehyde, and the rest is the same as that in the embodiment 1, so that the solar water evaporation accelerating hydrogel with the hierarchical pore structure can be obtained.
Example 9:
the temperature in the step (4) in the embodiment 1 is adjusted to be 30 ℃, and the rest is the same as that in the embodiment 1, so that the hydrogel with the hierarchical pore structure for accelerating solar water evaporation can be obtained.
Example 10:
the time in the step (4) in the example 1 is adjusted to be 8h, and the rest is the same as that in the example 1, so that the hydrogel with the hierarchical pore structure for accelerating solar water evaporation can be obtained.
Claims (8)
1. A preparation method of a hydrogel for accelerating solar water evaporation by a hierarchical pore structure is characterized by comprising the following steps:
(1) preparing a copper sulfide/reduced graphene oxide (CuS/rGO) novel photo-thermal conversion material: firstly, fully mixing Graphene Oxide (GO) and cysteine in deionized water, and uniformly stirring. Then dissolving copper chloride (CuCl) with a certain concentration2) Adding the solution into a mixed solution of GO and cysteine, finally transferring the solution into a hydrothermal reaction kettle for reaction for a certain time, and finally washing the solution clean.
(2) Preparation of aqueous polyvinyl alcohol solution: a certain amount of polyvinyl alcohol is weighed and added into a proper amount of water to prepare a polyvinyl alcohol aqueous solution with a certain concentration.
(3) Preparing a precursor: and (3) adding the CuS/rGO photothermal conversion material prepared in the step (1), a cross-linking agent and a catalyst into the step (2) and uniformly mixing.
(4) Curing and forming of the hydrogel: and (4) transferring the precursor obtained in the step (3) into a mold, and performing heat curing molding.
(5) Cleaning the hydrogel: and (4) washing the multi-pore hydrogel obtained in the step (4) with deionized water to clean the redundant substances.
2. The method for preparing the solar water evaporation accelerating hydrogel with the hierarchical pore structure as claimed in claim 1, wherein the hierarchical pore structure comprises: according to the mass ratio of the prepared novel photo-thermal conversion material CuS/rGO, the ratio of graphene oxide to copper chloride is 1: 5; copper chloride and cysteine are 1: 1.
3. The method for preparing the solar water evaporation accelerating hydrogel with the hierarchical pore structure as claimed in claim 1, wherein the hierarchical pore structure comprises: the polyvinyl alcohol type used in the polyvinyl alcohol aqueous solution comprises 1799 type, 2699 type and the like, accounts for 5-15% of the mass fraction of the aqueous solution, and the stirring time is 20-100 min.
4. The method for preparing the solar water evaporation accelerating hydrogel with the hierarchical pore structure as claimed in claim 1, wherein the hierarchical pore structure comprises: according to the mass ratio, the novel photothermal conversion material copper sulfide/reduced graphene oxide/polyvinyl alcohol is 1: 5, the mass fraction of the cross-linking agent is 5-10%, and the mass fraction of the catalyst is 5-10%.
5. The method for preparing the solar water evaporation accelerating hydrogel with the hierarchical pore structure as claimed in claim 1, wherein the hierarchical pore structure comprises: the cross-linking agent is one or more of aldehydes such as formaldehyde, glutaraldehyde and the like.
6. The method for preparing the solar water evaporation accelerating hydrogel with the hierarchical pore structure as claimed in claim 1, wherein the hierarchical pore structure comprises: the catalyst is one or more of hydrochloric acid, sulfuric acid and other acidic substances.
7. The method for preparing the solar water evaporation accelerating hydrogel with the hierarchical pore structure as claimed in claim 1, wherein the hierarchical pore structure comprises: the dispersion mode is one or more of stirring paddle mechanical stirring, magnetic stirring and ultrasonic dispersion, and the dispersion time is 5-20 min.
8. The method for preparing the solar water evaporation accelerating hydrogel with the hierarchical pore structure as claimed in claim 1, wherein the hierarchical pore structure comprises: the temperature of the thermosetting molding is 40-80 ℃, and the curing time is 3-10 h.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112934129A (en) * | 2021-01-28 | 2021-06-11 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | Efficient photo-thermal water evaporation carbon nanotube hydrogel and preparation method and application thereof |
| CN113130110A (en) * | 2021-03-10 | 2021-07-16 | 西南科技大学 | Purification treatment method of uranium-containing radioactive wastewater |
| CN115159607A (en) * | 2022-06-16 | 2022-10-11 | 湖北美辰环保股份有限公司 | Solar evaporation and salt crystal collection device with separated illuminated surface and evaporation surface |
| CN115230270A (en) * | 2022-08-18 | 2022-10-25 | 江苏省农业科学院 | Double-response efficient bio-based composite hydrogel system and preparation method and application thereof |
| WO2023067479A1 (en) * | 2021-10-19 | 2023-04-27 | Khalifa University of Science and Technology | Nanoparticle hydrogels |
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2020
- 2020-10-13 CN CN202011088404.2A patent/CN112108084A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112934129A (en) * | 2021-01-28 | 2021-06-11 | 中国科学院苏州纳米技术与纳米仿生研究所南昌研究院 | Efficient photo-thermal water evaporation carbon nanotube hydrogel and preparation method and application thereof |
| CN112934129B (en) * | 2021-01-28 | 2022-08-23 | 江西省纳米技术研究院 | Efficient photo-thermal water evaporation carbon nanotube hydrogel and preparation method and application thereof |
| CN113130110A (en) * | 2021-03-10 | 2021-07-16 | 西南科技大学 | Purification treatment method of uranium-containing radioactive wastewater |
| WO2023067479A1 (en) * | 2021-10-19 | 2023-04-27 | Khalifa University of Science and Technology | Nanoparticle hydrogels |
| CN115159607A (en) * | 2022-06-16 | 2022-10-11 | 湖北美辰环保股份有限公司 | Solar evaporation and salt crystal collection device with separated illuminated surface and evaporation surface |
| CN115230270A (en) * | 2022-08-18 | 2022-10-25 | 江苏省农业科学院 | Double-response efficient bio-based composite hydrogel system and preparation method and application thereof |
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Application publication date: 20201222 |