CN116621258A - Carbon-based material, preparation method and application thereof - Google Patents
Carbon-based material, preparation method and application thereof Download PDFInfo
- Publication number
- CN116621258A CN116621258A CN202310471618.5A CN202310471618A CN116621258A CN 116621258 A CN116621258 A CN 116621258A CN 202310471618 A CN202310471618 A CN 202310471618A CN 116621258 A CN116621258 A CN 116621258A
- Authority
- CN
- China
- Prior art keywords
- carbon
- based material
- evaporation
- preparation
- concentration
- 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.)
- Pending
Links
- 239000003575 carbonaceous material Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 32
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000013535 sea water Substances 0.000 claims abstract description 23
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 19
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 19
- 238000010612 desalination reaction Methods 0.000 claims abstract description 15
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 239000005539 carbonized material Substances 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000010000 carbonizing Methods 0.000 claims abstract description 3
- 239000006229 carbon black Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 17
- 238000003763 carbonization Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000002041 carbon nanotube Substances 0.000 claims description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 2
- 229920000128 polypyrrole Polymers 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 abstract description 54
- 230000008020 evaporation Effects 0.000 abstract description 52
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 150000003839 salts Chemical class 0.000 abstract description 3
- 230000002776 aggregation Effects 0.000 abstract description 2
- 238000004220 aggregation Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000012360 testing method Methods 0.000 description 14
- 239000000243 solution Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 239000012267 brine Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000001000 micrograph Methods 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004626 scanning electron microscopy Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention relates to a carbon-based material, a preparation method and application thereof, and belongs to the technical field of sea water desalination. The preparation method of the carbon-based material comprises the following steps of (1) carbonizing melamine sponge to obtain carbonized material; (2) Dissolving a photo-thermal material in a polyvinyl alcohol solution to obtain a suspension; (3) Immersing the carbonized material in the suspension, and drying to obtain the carbon-based material. The carbon-based material provided by the invention is applied to seawater evaporation and desalination, can be evaporated for a long time under high-concentration seawater and high light intensity, and cannot cause salt aggregation. The evaporation capacity of the seawater reaches 2.4kg/m 2 * h, the light-heat conversion efficiency reaches 94%.
Description
Technical Field
The invention belongs to the technical field of sea water desalination, and particularly relates to a carbon-based material, a preparation method and application thereof.
Background
The technology of sea water desalination has been developed continuously, and has become one of the important ways to solve the shortage of fresh water resources, and the technology of sea water desalination currently mainly comprises reverse osmosis, electrodialysis, multistage flash evaporation, distillation, freezing, ion exchange and the like, but the methods do not need additional energy supply to meet the production requirements, further development is severely restricted from the aspect of economic benefit, however, the consumption of electric energy and the emission of greenhouse gases are one problem to be considered, and the development of the technology in the areas with limited resources is limited by the shortage of electric power and the high construction cost of reverse osmosis basic equipment. Recently, a seawater desalination technology using renewable solar energy as a driving force has been developed, which firstly converts solar energy into heat energy through a photo-thermal material and then heats water adsorbed at an air interface of the material, thereby obtaining purified water vapor. The existing solar evaporation material can face several problems: firstly, the preparation method is relatively troublesome; secondly, the preparation cost is relatively high; and the evaporation efficiency and the photo-thermal conversion efficiency are relatively low.
Disclosure of Invention
Therefore, the invention aims to solve the technical problems of complicated preparation process, expensive materials, low evaporation efficiency and low solar energy utilization rate of the existing evaporation materials and the like of the seawater desalination materials in the prior art.
In order to solve the technical problems, the invention provides a carbon-based material, a preparation method and application thereof. The carbon-based material has the characteristics of strong hydrophilicity, simple process, high efficiency, good durability and the like, can work for a long time in an extreme environment (high-salt, strong acid and strong alkali environments), and provides a technical solution for the serious problems faced by the current sea water desalination materials.
The first object of the present invention is to provide a method for preparing a carbon-based material, comprising the steps of,
(1) Carbonizing melamine sponge to obtain carbonized material;
(2) Dissolving a photo-thermal material in a polyvinyl alcohol solution to obtain a suspension;
(3) And (3) immersing the carbonized material in the step (1) in the suspension in the step (2), and drying to obtain the carbon-based material.
In one embodiment of the invention, in step (1), the melamine sponge has a density of 8kg/m 3 -16kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness is 1mm-4mm.
Further, the saidThe density of the melamine sponge is 8kg/m 3 、12kg/m 3 、16kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness is 1mm, 2mm, 3mm and 4mm.
Preferably, the melamine sponge has a density of 12kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness was 3mm.
In one embodiment of the invention, in step (1), the carbonization treatment is performed at a temperature of 380 ℃ to 420 ℃ for a time of 2h to 3h. The porous structure can be obtained after carbonization treatment, and the specific surface area is increased, so that the seawater desalination is facilitated. The strength of the material can be ensured under the process conditions. In the process, the melamine sponge MS gradually changes from white to brown (300-370 ℃), and finally changes into black carbonized melamine sponge AMS (370-400 ℃). Black AMS has better light absorptivity so that it has a higher surface temperature in sunlight (fig. 1).
In one embodiment of the invention, in step (2), the concentration of the polyvinyl alcohol solution is 2mg/mL-8mg/mL.
Further, the concentration of the polyvinyl alcohol solution is 2mg/mL, 4mg/mL and 8mg/mL.
In one embodiment of the present invention, in step (2), the photo-thermal material is selected from one or more of carbon black, polypyrrole, and carbon nanotubes.
Further, the photo-thermal material is selected from carbon black.
In one embodiment of the invention, in step (2), the concentration of the photo-thermal material in the suspension is 15mg/mL-35mg/mL.
Further, the concentration of the photo-thermal material in the suspension is 15mg/mL, 25mg/mL, 35mg/mL.
In one embodiment of the invention, in step (3), the time of the impregnation is 1.5h to 2.5h.
In one embodiment of the present invention, in step (3), the temperature of the drying is 70 ℃ to 80 ℃.
A second object of the present invention is to provide a carbon-based material prepared by the method.
A third object of the present invention is to provide the use of said carbon based material in desalination of sea water.
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) The carbon-based material has the characteristics of being porous and high in hydrophilicity; the polyvinyl alcohol and the photo-thermal material with high photo-thermal conversion performance are added, so that the photo-thermal material has high photo-thermal conversion efficiency and good weather resistance, can be evaporated in extreme environments (strong acid, strong alkali and high salt), and keeps high efficiency and stability.
(2) In the preparation method, in the impregnation process, the photo-thermal material is physically adsorbed on the carbonized melamine surface through polyvinyl alcohol (PVA), and the formed nano particle-like pellets can enhance internal reflection of light so as to enhance light absorption and facilitate evaporation.
(3) The preparation method disclosed by the invention is simple in process, wide in raw materials and low in cost, and has an application prospect of large-scale preparation.
(4) The carbon-based material provided by the invention is applied to seawater evaporation and desalination, can be evaporated for a long time under high-concentration seawater and high light intensity, and cannot cause salt aggregation. The evaporation capacity of the seawater reaches 2.4kg/m 2 * h, the light-heat conversion efficiency reaches 94%.
(5) The evaporation capacity of the carbon-based material is not less than 1.0 Kg/m-2, the evaporation efficiency is more than 92%, and the carbon-based material has the retention rate of more than 99.7% for one or more mixed systems of Na-, mg-, 2-, ca-, K-, and K-, wherein the concentration is 10Mg/L-10000Mg/L, and has the advantages of wide material source, low cost, strong weather resistance and the like, and has wide application prospect in the field of sea water desalination.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which:
FIG. 1 is a flow chart of the preparation of a carbon-based material of the present invention;
FIG. 2 is a Scanning Electron Microscope (SEM) image of a carbon-based material of example 1; wherein a is a scanning electron microscope image of melamine sponge MS; b is a scanning electron microscope image of the carbonized melamine sponge AMS; c is a scanning electron microscope image after carbon black is attached after carbonization;
FIG. 3 is an X-ray diffraction (XRD) pattern of the material of example 1 of the invention;
FIG. 4 is a hydrophilicity test of the carbon-based material of example 1 of the present invention; wherein, the left side is before contact, and the right side is after contact;
FIG. 5 is a diagram of a model of the vaporization structure of the present invention;
FIG. 6 shows the effect of melamine sponge of different thickness on evaporation efficiency according to example 1 of the present invention; the left is an evaporation efficiency graph of the melamine sponge with different thickness, and the right is a graph of the evaporation quality of the melamine sponge with different thickness along with time;
FIG. 7 is a graph showing the effect of melamine sponge of different densities on evaporation efficiency according to example 2 of the present invention;
FIG. 8 is a graph showing the effect of different polyvinyl alcohol concentrations on evaporation efficiency according to example 3 of the present invention;
FIG. 9 is a graph showing the effect of different carbon black concentrations on evaporation efficiency for example 4 of the present invention;
FIG. 10 is a graph showing evaporation efficiency of the carbon-based material of test example 1 according to the present invention in pure water, strong acid, strong base, and brine environments;
FIG. 11 is an infrared imaging of the carbon-based material of test example 1 of the present invention before and after water addition under the sun; wherein, the left part is before adding water, and the right part is after adding water;
FIG. 12 shows the photo-thermal conversion efficiency and evaporation efficiency of the carbon-based material of test example 1 according to the present invention in pure water, strong acid, strong base, and brine environments;
FIG. 13 is a graph showing the effect of the number of days of cycling of the carbon-based material of test example 2 on evaporation efficiency according to the present invention;
fig. 14 is an outdoor test 12 of test example 2 of the present invention: the best effect is 30; wherein, the left side is the surface temperature of the material when water is not added, and the right side is the surface temperature of the material when water is added.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
Example 1
The invention relates to a carbon-based material and a preparation method thereof, which specifically comprise the following steps:
(1) Will have a density of 12kg/m 3 Melamine sponges with the thickness of 1mm, 2mm, 3mm and 4mm are carbonized for 2 hours at 400 ℃ to obtain carbonized materials (carbonized melamine).
(2) Stirring for 15min at 95 ℃ in a water bath environment to prepare a polyvinyl alcohol solution with the concentration of 4mg/mL.
(3) Water-soluble carbon black was added to the formulated polyvinyl alcohol solution in an amount of 15mg/mL to obtain a suspension.
(4) Immersing the carbonized material into the suspension for 2 hours, and drying at 75 ℃ to obtain the carbon-based material (melamine+carbon black after carbonization).
The relevant samples were subjected to characterization and wettability testing, the results of which are shown in fig. 2-5. Carbon black was found to adhere well to the surface of the carbonized melamine sponge according to scanning electron microscopy (fig. 2). The carbon black was confirmed to adhere to the carbonized melamine surface by XRD test (fig. 3). The contact angle was found to be close to 0 ° by contact angle measurement, indicating good wettability of the material surface (fig. 4). The thickness of the melamine sponge after carbonization varies, the original 1mm is changed to 0.8mm, 2mm is changed to 1.5mm, 3mm is changed to 2.5mm, and 4mm is changed to 3mm. The evaporation efficiency of the evaporation device is tested as shown in fig. 5, seawater is introduced into the carbon-based material, and under the irradiation of sunlight, the energy of the sunlight is converted into heat energy due to the photo-thermal conversion effect of the seawater desalination material, so that the seawater stored in the evaporation device is heated, the seawater is subjected to phase change, and vapor is formed to obtain purified water, and the seawater desalination material has a large specific surface area due to the abundant self-formed holes. The drip and the thermal insulation layer can also better protect heat loss, so that the evaporating surface keeps higher temperature, has higher evaporating efficiency, and can obtain carbon-based material with thickness of 1.5mm, and the efficiency can reach 2.346kg/m 2 * h. The mass reduction of water in the samples over time was obtained by long-term testing (graph6)。
Example 2
The invention relates to a carbon-based material and a preparation method thereof, which specifically comprise the following steps:
substantially the same as in example 1, the difference is that: changing into a thickness of 2mm and a density of 8kg/m respectively 3 、12kg/m 3 、16kg/m 3 Is used for preparing carbon-based materials (melamine+carbon black after carbonization).
The evaporation efficiency is shown in FIG. 7, and the result shows that the melamine density is 8kg/m 3 At the time of evaporation, the efficiency of evaporation was 2.05kg/m 2 * h. Density 12kg/m 3 When the evaporation efficiency reaches 2.25kg/m 2 * h. Density 6kg/m 3 When the evaporation efficiency is reduced to 2.1kg/m 2 * h, the melamine density is preferably 12kg/m 3 。
Example 3
The invention relates to a carbon-based material and a preparation method thereof, which specifically comprise the following steps:
substantially the same as in example 1, the difference is that: is changed into a density of 12kg/m 3 Melamine sponge with thickness of 2mm, polyvinyl alcohol solutions with concentration of 2mg/mL, 4mg/mL and 6mg/mL respectively, was prepared to prepare carbon-based materials (melamine+carbon black after carbonization).
As shown in FIG. 8, the evaporation efficiency was 2.08kg/m, and the polyvinyl alcohol concentration was 2mg/mL 2 * h. The concentration of the polyvinyl alcohol is 4mg/mL, and the evaporation efficiency is 2.368kg/m 2 * h. The concentration of the polyvinyl alcohol is 6mg/mL, and the evaporation efficiency is 2.130kg/m 2 * h, the concentration of the polyvinyl alcohol solution is preferably 4mg/mL. Because the high concentration of polyvinyl alcohol can block the pores of melamine, thereby resulting in a decrease in evaporation efficiency, and the low concentration of polyvinyl alcohol cannot firmly adhere carbon black to the surface of melamine.
Example 4
The invention relates to a carbon-based material and a preparation method thereof, which specifically comprise the following steps:
substantially the same as in example 1, the difference is that: is changed into a density of 12kg/m 3 Melamine sponge with thickness of 2mm and carbon black concentration of 15mg/mL, 25mg/mL respectively,35mg/mL of the suspension, a carbon-based material (melamine+carbon black after carbonization) was prepared.
As shown in FIG. 9, the evaporation efficiency was 2.1kg/m at a carbon black content of 15mg/mL 2 * h, the evaporation efficiency is 2.35kg/m under the carbon black quantity of 25mg/mL 2 * h, at a carbon black content of 35mg/mL, an evaporation efficiency of 2.04kg/m 2 * The carbon black concentration is preferably 25mg/mL. This is because the high concentration of carbon black plugs the pores of melamine, resulting in a decrease in evaporation efficiency. A low concentration of carbon black results in an insufficient amount of photo-thermal material, resulting in low evaporation efficiency.
Test example 1
Based on example 4, the carbon-based material under the optimal condition (carbon black concentration of 25 mg/mL) can achieve higher evaporation rate and photo-thermal conversion efficiency in pure water, strong acid, strong alkali and brine environments, and the results are shown in FIGS. 10-12. Fig. 10 shows that the sample can remain relatively stable in strong acid, strong base, and brine environments. FIG. 11 shows that the temperature can be maintained at 84.5℃before water addition and can reach about 42℃after water addition. We have performed evaporation efficiency tests for 10 days, and the results show that higher efficiency can still be maintained over a long period of time. FIG. 12 shows that the evaporation efficiency under pure water was 2.388kg/m 2 * h. The light-heat conversion efficiency reaches 94.2%. Under seawater, the evaporation efficiency is 2.351kg/m 2 * h. The light-heat conversion efficiency reaches 93.61%. Under strong acid, the evaporation efficiency is 2.314kg/m 2 * h. The light-heat conversion efficiency was 91.01%. Under strong alkali, the evaporation efficiency is 2.203kg/m 2 * h. The light-heat conversion efficiency is 86.24 percent.
Test example 2
Based on example 4, outdoor tests were performed on carbon-based materials under optimal conditions (carbon black concentration of 25 mg/mL), and the results are shown in FIGS. 13 to 14 and Table 1:
TABLE 1
| Time | 8：30 | 10：30 | 11：30 | 12：30 | 13：30 | 14：30 | 15：30 | 16：30 |
| Light intensity (mw/cm) 2 ) | 57 | 62.5 | 62 | 61.6 | 62 | 56 | 45 | 40.5 |
| Temperature (. Degree. C.) | 29 | 33 | 34 | 34.5 | 34 | 33.4 | 30.3 | 29.6 |
| Humidity (. Degree. C.) | 75％ | 80％ | 80％ | 80％ | 80％ | 82％ | 78％ | 76％ |
| Evaporation efficiency (kg/m) 2 *h) | 1.778 | 1.935 | 1.975 | 2.496 | 2.111 | 1.923 | 1.689 | 1.643 |
As can be seen from table 1, in the open air 12:30 can still reach higher evaporation efficiency, which can reach 2.496kg/m 2 * h. From 8: 30.788 kg/m 2 * h to 12 pm: 30 gradually increasing the evaporation efficiency to 2.496kg/m 2 * h. This is due to 8:30 to 12:30 light intensity is gradually increased, and the ambient temperature is increased, resulting in an increase in the surface evaporation temperature of the material, so that the evaporation efficiency is gradually increased. Then after reaching maximum, to afternoon 16:30 gradually decreasing the evaporation efficiency to 1.643kg/m 2 * h. This is due to 12:30 to 16:30 light intensity is gradually increased, the ambient temperature is reduced, the surface evaporation temperature of the material is reduced, and the evaporation efficiency is gradually lowered.
As can be seen from fig. 13, the carbon-based material can maintain a high degree of stability for a long period of time.
As can be seen from fig. 14, 12:30, the surface temperature of the material was 83.7℃when no water was added, and 39.3℃when water was added.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (10)
1. A preparation method of a carbon-based material is characterized by comprising the following steps,
(1) Carbonizing melamine sponge to obtain carbonized material;
(2) Dissolving a photo-thermal material in a polyvinyl alcohol solution to obtain a suspension;
(3) And (3) immersing the carbonized material in the step (1) in the suspension in the step (2), and drying to obtain the carbon-based material.
2. The method for producing a carbon-based material according to claim 1, wherein in the step (1), the melamine sponge has a density of 8kg/m 3 -16kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The thickness is 1mm-4mm.
3. The method of producing a carbon-based material according to claim 1, wherein in the step (1), the carbonization treatment is performed at a temperature of 380 ℃ to 420 ℃ for a time of 2 hours to 3 hours.
4. The method for producing a carbon-based material according to claim 1, wherein in the step (2), the concentration of the polyvinyl alcohol solution is 2mg/mL to 8mg/mL.
5. The method of producing a carbon-based material according to claim 1, wherein in step (2), the photo-thermal material is selected from one or more of carbon black, polypyrrole, and carbon nanotubes.
6. The method of producing a carbon-based material according to claim 1, wherein in the step (2), the concentration of the photothermal material in the suspension is 15mg/mL to 35mg/mL.
7. The method for producing a carbon-based material according to claim 1, wherein in the step (3), the time of the impregnation is 1.5h to 2.5h.
8. The method of producing a carbon-based material according to claim 1, wherein in the step (3), the temperature of the drying is 70 ℃ to 80 ℃.
9. A carbon-based material prepared by the method of any one of claims 1-8.
10. Use of the carbon-based material of claim 9 in desalination of sea water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310471618.5A CN116621258A (en) | 2023-04-27 | 2023-04-27 | Carbon-based material, preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310471618.5A CN116621258A (en) | 2023-04-27 | 2023-04-27 | Carbon-based material, preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116621258A true CN116621258A (en) | 2023-08-22 |
Family
ID=87612522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310471618.5A Pending CN116621258A (en) | 2023-04-27 | 2023-04-27 | Carbon-based material, preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116621258A (en) |
-
2023
- 2023-04-27 CN CN202310471618.5A patent/CN116621258A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112499613B (en) | Preparation method of nitrogen and phosphorus doped porous carbon for wide pH range oxygen reduction electrocatalysis | |
| CN108483442B (en) | Preparation method of nitrogen-doped carbon electrode material with high mesoporous rate | |
| CN107827107B (en) | Preparation method of kapok-based hollow porous carbon micro-tube or porous carbon micro-strip | |
| CN109081340B (en) | Pine-based biomass activated carbon, preparation method thereof and application thereof in electrochemical energy storage | |
| CN109266315B (en) | Preparation method of carbon dot-based photothermal conversion material | |
| CN110217792B (en) | Nitrogen-sulfur-doped hierarchical porous carbon material and preparation method and application thereof | |
| CN112429798B (en) | Method for preparing salt-resistant evaporator by assembling nano particles on vertically-arranged fibers | |
| CN114300702B (en) | Fuel cell gas diffusion layer structure containing cerium oxide modified carbon nanofiber and preparation method thereof | |
| CN111333068A (en) | Preparation method and application of biomass porous carbon material based on nut shells | |
| CN108892138A (en) | One kind is based on biomass derived nitrogen/oxygen codope hierarchical porous structure carbon material and preparation method thereof | |
| CN112265990A (en) | Preparation method and application of furfural residue porous activated carbon material | |
| CN111261431A (en) | Preparation method of nano cobaltosic oxide/nitrogen-doped three-dimensional porous carbon skeleton composite material for super capacitor | |
| AU2020101283A4 (en) | Method for Manufacturing Straw-Based Activated Carbon Electrode Material for Super Capacitor with Energy Storage Efficiency Enhanced Through Acid Mine Drainage | |
| CN112927954A (en) | Method for preparing carbon electrode material by constructing wood pore structure based on fungus method | |
| CN112357902A (en) | Mesoporous carbon material with high specific surface area, and preparation method and application thereof | |
| CN114023980A (en) | Preparation method of nitrogen-doped porous carbon material based on furfural residues and electrocatalytic oxygen reduction performance of nitrogen-doped porous carbon material | |
| CN112479205A (en) | Narrow-pore bamboo sheath activated carbon and preparation method thereof | |
| CN114956040B (en) | Nitrogen-oxygen doped hierarchical porous carbon material, preparation method and application | |
| CN116621258A (en) | Carbon-based material, preparation method and application thereof | |
| CN114180573B (en) | Biomass-derived porous carbon electrode and preparation method and application thereof | |
| CN114291806B (en) | Multi-scale regulation and control method for graphitization degree of low-order coal-based porous carbon | |
| CN114394592B (en) | Method for modulating sludge-based hierarchical porous phosphorus-containing carbon by microwaves for super capacitor | |
| CN111924843B (en) | Preparation method of cyano-modified biomass derived carbon and application of cyano-modified biomass derived carbon in potassium storage field | |
| CN115285991A (en) | Method for generating hierarchical porous carbon based on self-assembly of biomass derivative and application thereof | |
| CN111313020B (en) | Preparation method of sulfur-doped nitrogen-rich carbon material, electrode and application of sulfur-doped nitrogen-rich carbon material in sodium/potassium ion battery |
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 |