CN108211822B - Manganese-containing oxide composite semipermeable membrane, and preparation method and application thereof - Google Patents
Manganese-containing oxide composite semipermeable membrane, and preparation method and application thereof Download PDFInfo
- Publication number
- CN108211822B CN108211822B CN201810023357.XA CN201810023357A CN108211822B CN 108211822 B CN108211822 B CN 108211822B CN 201810023357 A CN201810023357 A CN 201810023357A CN 108211822 B CN108211822 B CN 108211822B
- Authority
- CN
- China
- Prior art keywords
- semipermeable membrane
- manganese oxide
- composite semipermeable
- containing composite
- manganese
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/20—Esters of inorganic acids, e.g. cellulose nitrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/364—Membrane distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
-
- 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
- Y02A20/131—Reverse-osmosis
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a manganese oxide-containing composite semipermeable membrane, a preparation method and application thereof, wherein the preparation method comprises the following steps: step 1: adding NaNO3Mixing with a positive divalent manganese salt, uniformly grinding, heating, reacting for a period of time, cooling to room temperature, washing with water, centrifuging and drying to obtain a manganese oxide; step 2: preparing a semi-permeable membrane precursor solution by using cellulose nitrate; and step 3: adding the manganese oxide obtained in the step 1 into ethanol, performing ultrasonic dispersion, adding the mixture into the semi-permeable membrane precursor solution prepared in the step 2, and uniformly stirring to obtain a mixed solution; and 4, step 4: and (4) flatly paving the mixed solution obtained in the step (3), and naturally evaporating to obtain the composite semipermeable membrane containing the manganese oxide. According to the manganese oxide-containing composite semipermeable membrane provided by the invention, the manganese oxide and the semipermeable membrane are compounded, and absorbed light energy is converted into heat energy by utilizing solar energy radiated by sunlight, so that photoinduced water evaporation is realized, and the manganese oxide-containing composite semipermeable membrane is expected to be widely applied in the field of seawater desalination.
Description
Technical Field
The invention relates to the technical field of preparation of metal oxide and composite semipermeable membranes, in particular to a manganese-containing oxide composite semipermeable membrane, and a preparation method and application thereof.
Background
Water resources on earth are as high as 14.5 billion cubic kilometers, and although in large quantities, the fresh water content is only about 2.5% of the total water resource, and more than 70% of the fresh water is frozen in ice caps in south and north poles. At present, the fresh water resource which can be directly utilized by human beings only accounts for 0.26 percent of the total water on the earth. As is well known, seawater contains a lot of water resources, and therefore seawater desalination technology has become an important way to alleviate and solve the increasing shortage of fresh water resources. There are many techniques for desalinating seawater so far, but compared with freezing method, electrodialysis method, ion exchange method, multistage flash evaporation method, reverse dialysis and other methods, the method for desalinating seawater by using solar energy is undoubtedly the most economical and practical technique with the least environmental pollution.
Disclosure of Invention
The invention aims to provide a manganese oxide-containing composite semipermeable membrane, a preparation method and application thereof.
In order to achieve the above object, the present invention provides a method for preparing a manganese oxide-containing composite semipermeable membrane, comprising the steps of:
step 1: adding NaNO3Mixing with a positive divalent manganese salt, uniformly grinding, heating, reacting for a period of time, cooling to room temperature, washing with water, centrifuging and drying to obtain a manganese oxide;
step 2: preparing a semi-permeable membrane precursor solution by using cellulose nitrate;
and step 3: adding the manganese oxide obtained in the step 1 into ethanol, performing ultrasonic dispersion, adding the mixture into the semi-permeable membrane precursor solution prepared in the step 2, and uniformly stirring to obtain a mixed solution;
and 4, step 4: and (4) flatly paving the mixed solution obtained in the step (3), and naturally evaporating to obtain the composite semipermeable membrane containing the manganese oxide.
The preparation method of the manganese oxide-containing composite semipermeable membrane comprises the step of preparing the manganese oxide into MnO or MnO2、Mn2O3And Mn3O4One or more of。
In the above method for preparing a manganese oxide-containing composite semipermeable membrane, in step 1, the positive divalent manganese salt is MnCl2Or MnSO4。
In the preparation method of the manganese-containing oxide composite semipermeable membrane, in the step 1, the heating temperature is 350-.
In the above method for preparing a manganese oxide-containing composite semipermeable membrane, in step 2, the method for preparing cellulose nitrate comprises: soaking absorbent cotton in a mixed solution composed of concentrated nitric acid and concentrated sulfuric acid for a period of time, taking out, washing with water and drying to obtain cellulose nitrate.
In the above method for producing a manganese oxide-containing composite semipermeable membrane, in step 2, the method for producing the semipermeable membrane precursor solution comprises: dissolving the dried cellulose nitrate into a mixed solution of ethyl ether and ethanol, and stirring to obtain a semi-permeable membrane precursor solution.
The invention also provides a manganese oxide-containing composite semipermeable membrane, which is prepared by the method; and the manganese oxide-containing composite semipermeable membrane is used for seawater desalination.
The manganese oxide-containing composite semipermeable membrane comprises, by weight, 5% to 90% of manganese oxide.
The manganese oxide-containing composite semipermeable membrane is characterized in that the thickness of the manganese oxide-containing composite semipermeable membrane is 20 to 500 μm.
The invention also provides a seawater desalination method, which uses the manganese oxide-containing composite semipermeable membrane and comprises the following steps: cover the composite semipermeable membrane on the sea water surface, use the sunlight irradiation composite semipermeable membrane, salt material is held back in one side of composite semipermeable membrane, and fresh water passes through the hole of composite semipermeable membrane to evaporate at the opposite side of composite semipermeable membrane.
Compared with the prior art, the invention has the following beneficial effects:
the manganese oxide with the two-dimensional nano flaky structure has better light absorption in the Ultraviolet-Visible-Near Infrared spectrum (UV-VIS-NIR), so the manganese oxide is compounded with the semipermeable membrane to prepare the metal oxide-based semipermeable membrane, the transmission spectrum shows that the manganese oxide-containing composite semipermeable membrane has better light absorption in the UV-VIS-NIR range, the solar energy of solar radiation is utilized to convert light energy absorption into heat energy, the light evaporation of water is realized, and the purpose of desalting high salinity water (seawater) is achieved. The preparation method of the manganese oxide-containing composite semipermeable membrane provided by the invention has the advantages of simple and safe preparation process, low cost, greenness, no pollution, good photo-thermal conversion effect and the like, and has a great development space in the fields of water evaporation by light, water heating by solar energy and seawater desalination.
Drawings
FIG. 1 is an XRD pattern of a manganese oxide-containing composite semipermeable membrane prepared in example 1 of the present invention;
FIG. 2 is a low-magnification SEM photograph of manganese oxide used in example 1 of the present invention;
FIG. 3 is a high magnification SEM photograph of manganese oxide used in example 1 of the present invention;
FIG. 4 is a graph showing an ultraviolet-visible absorption spectrum of manganese oxide used in example 1 of the present invention;
FIG. 5 is a transmission spectrum of a manganese oxide-containing composite semipermeable membrane and a collodion semipermeable membrane prepared in example 1 of the present invention;
FIG. 6 is a line graph of water mass change for a performance test of light evaporated water;
FIG. 7 is a bar graph of water mass change for a light evaporation water performance experiment;
FIG. 8 is a graph of water evaporation efficiency for a light evaporation water performance test;
FIG. 9 is a graph of water evaporation rate for a light evaporation water performance experiment.
Detailed Description
The invention will be further described by the following specific examples in conjunction with the drawings, which are provided for illustration only and are not intended to limit the scope of the invention.
The invention provides a preparation method of a manganese-containing oxide composite semipermeable membrane, which comprises the following steps:
step 1: adding NaNO3And positive divalent manganese salt (MnCl)2Or MnSO4) Mixing and grinding uniformly, heating and reacting in a muffle furnace at the temperature of 350-400 ℃ for 20-60min, cooling to room temperature, washing with water, centrifuging and drying to obtain manganese oxide with a two-dimensional nano flaky structure, wherein the manganese oxide is MnO or MnO2、 Mn2O3And Mn3O4One or more of;
step 2: preparing a semi-permeable membrane precursor solution by using cellulose nitrate; the method specifically comprises the following steps: soaking absorbent cotton in a mixed solution composed of concentrated nitric acid and concentrated sulfuric acid for a period of time, taking out, washing with water and drying to obtain cellulose nitrate; dissolving the dried cellulose nitrate in a mixed solution of ethyl ether and ethanol, and stirring to obtain a transparent semi-permeable membrane precursor solution;
and step 3: adding the manganese oxide obtained in the step 1 into ethanol, performing ultrasonic dispersion, adding the mixture into the semi-permeable membrane precursor solution prepared in the step 2, and uniformly stirring to obtain a mixed solution;
and 4, step 4: and (4) flatly paving the mixed solution obtained in the step (3), and naturally evaporating to obtain the composite semipermeable membrane containing the manganese oxide.
The invention also provides a manganese oxide-containing composite semipermeable membrane, which is prepared by the method; and the manganese oxide-containing composite semipermeable membrane is used for seawater desalination. The content of the manganese oxide in the manganese oxide-containing composite semipermeable membrane is 5-90% by weight. The thickness of the manganese oxide-containing composite semipermeable membrane is 20 to 500 μm.
The invention also provides a seawater desalination method, which uses the manganese oxide-containing composite semipermeable membrane and comprises the following steps: cover the composite semipermeable membrane on the sea water surface, use the sunlight irradiation composite semipermeable membrane, salt material is held back in one side of composite semipermeable membrane, and fresh water passes through the hole of composite semipermeable membrane to evaporate at the opposite side of composite semipermeable membrane.
Example 1:
a method for preparing a manganese oxide-containing composite semipermeable membrane, comprising the steps of:
step 1: adding 5g NaNO3And 0.1g MnCl2Mixing and grinding uniformly, heating and reacting in a muffle furnace at 350 ℃ for 30min, cooling to room temperature, washing with water, centrifuging and drying to obtain manganese oxide with a two-dimensional nano flaky structure, wherein the manganese oxide is Mn3O4@ MnO2 composite material;
step 2: preparing a semi-permeable membrane precursor solution by using cellulose nitrate; the method specifically comprises the following steps: soaking 1g of absorbent cotton in a mixed solution consisting of 5mL of concentrated nitric acid and 10mL of concentrated sulfuric acid for 1.5h, taking out, washing with deionized water for 10 times, and drying in a drying oven at 30 ℃ for 24h to obtain cellulose nitrate; dissolving 1g of dried cellulose nitrate in a mixed solution of 30mL of diethyl ether and 30mL of ethanol, and stirring to obtain a transparent semi-permeable membrane precursor solution;
and step 3: adding 80mg of manganese oxide obtained in the step 1 into 1mL of ethanol, performing ultrasonic dispersion, adding into 2mL of semi-permeable membrane precursor solution prepared in the step 2, and mechanically stirring for 30min to obtain uniform mixed solution
And 4, step 4: flatly spreading 1.5mL of the mixed solution obtained in the step 3, specifically, adding the mixed solution into the bottom of a 500mL flat-bottomed beaker with the diameter of 75mm, naturally drying the mixed solution to form a film, and cutting the film into a circular film with the diameter of 33.5 mm. Mn with a thickness of about 80 μm was successfully preparedxOyA manganese oxide-containing composite semipermeable membrane having a content of about 8 mg.
As shown in FIG. 1, which is an X-ray diffraction (XRD) pattern of the manganese oxide-containing composite semipermeable membrane prepared in example 1, a @ peak is Mn3O4The characteristic peak of the model corresponds to JCPDS No.01-1127 of standard card, and the peak is MnO2The characteristic peak of (A) corresponds to the standard card JCPDS No.72-1983, which shows that Mn-containing materials are successfully prepared3O4@MnO2The composite semipermeable membrane is a manganese oxide-containing composite semipermeable membrane.
Fig. 2 and 3 are SEM photographs of manganese oxide used in example 1 of the present invention at different magnifications, and it can be seen that the manganese oxide has a two-dimensional nanosheet structure.
Fig. 4 and 5 show the uv-vis absorption spectrum of the manganese oxide and the transmission spectrum of the manganese oxide-containing composite semipermeable membrane used in example 1 of the present invention, wherein the collodion semipermeable membrane is a semipermeable membrane containing no manganese oxide, and the preparation method thereof is as follows: 2mL of the semi-permeable membrane precursor solution is slowly added into 1mL of the ethanol solution by sucking with a dropper, 1.5mL of the mixed solution is added into the bottom of a 500mL beaker with the diameter of 75mm, the mixed solution is naturally dried in the air to form a film, and the film is cut into a circular film with the diameter of 33.5 mm. It can be seen from the figure that the manganese oxide and manganese oxide-containing composite semipermeable membranes have good light absorption in the UV-VIS-NIR range.
Performance test of light evaporation water: the composite semipermeable membrane prepared in example 1 was placed on the water surface of a 40mm x 25mm 20mL deionized water-filled weighing flask having an opening diameter of 34.5mm, and the amount of change in the mass of water in the weighing flask was accurately recorded by an electronic balance under the irradiation of simulated sunlight (1 sun). As shown in fig. 6 to 9, in the drawings, "water (dark environment)" indicates the water evaporation effect of water without the radiation of simulated sunlight, i.e., at room temperature; "Water (1 sun)" means the water evaporation effect of water under a simulated solar radiation; "aqueous manganese oxide solution (1 sun)" means the water evaporation effect under simulated solar radiation after 8mg of manganese oxide powder is dissolved in water, and the specific steps are as follows: adding 8mg of manganese oxide powder into a weighing bottle (40mm multiplied by 25mm) with an opening diameter of 34.5mm and containing 20mL of deionized water, and performing ultrasonic dispersion for 10min to form a uniform manganese oxide aqueous solution; "manganese oxide-containing composite semipermeable membrane (1 sun)" means the water evaporation effect under a simulated solar radiation after the composite semipermeable membrane containing 8mg of manganese oxide was placed on the water surface. Fig. 6 and 7 show graphs and histograms of the change in the mass of water due to light evaporation. As seen from fig. 8, the manganese oxide-containing composite semipermeable membrane having a content of 8mg had a water evaporation efficiency as high as 57.2%, which was 1.47 times that of the manganese oxide aqueous solution and 3.04 times that of pure water. As seen from FIG. 9, the best water evaporation rate is a manganese oxide-containing composite semipermeable membrane, which is as high as 0.91kg m-2h-1. It can be concluded that the manganese oxide-containing composite semipermeable membrane exhibits very good photothermal conversion propertiesCan show better water evaporation effect by light.
The manganese oxide has attracted much attention and application in the aspects of super capacitor, electrode material and the like, but has not attracted much attention and application in the field of solar photo-thermal conversion. The basic principle of the membrane distillation technology is to combine the membrane technology with the distillation process, and to place the membrane on the liquid surface by using the steam pressure difference on two sides of the membrane as a driving force, so that the liquid to be evaporated can pass through the pores of the membrane and be evaporated on the other side of the membrane, thereby achieving the purpose of water vapor evaporation. Experiments show that the absorption spectrum of the manganese oxide with the two-dimensional nano flaky structure and the transmission spectrum of the manganese oxide-containing composite semipermeable membrane show that the manganese oxide-containing composite semipermeable membrane has better light absorption in the UV-VIS-NIR range, so that absorbed light energy can be converted into heat energy, photoinduced water evaporation is realized through photothermal conversion, the aim of desalinating seawater is fulfilled, the composite semipermeable membrane shows a better light evaporation water effect, the manufacturing cost is low, the composite semipermeable membrane has the environment-friendly characteristic, and the composite semipermeable membrane can be popularized in the field of seawater desalination.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. The preparation method of the manganese-containing oxide composite semipermeable membrane is characterized by comprising the following steps of:
step 1: adding NaNO3Mixing with a positive divalent manganese salt, uniformly grinding, heating, reacting for a period of time, cooling to room temperature, washing with water, centrifuging and drying to obtain a manganese oxide; the manganese oxide is of a two-dimensional nano flaky structure;
step 2: preparing a semi-permeable membrane precursor solution by using cellulose nitrate;
and step 3: adding the manganese oxide obtained in the step 1 into ethanol, performing ultrasonic dispersion, adding the mixture into the semi-permeable membrane precursor solution prepared in the step 2, and uniformly stirring to obtain a mixed solution;
and 4, step 4: and (4) flatly paving the mixed solution obtained in the step (3), and naturally evaporating to obtain the composite semipermeable membrane containing the manganese oxide.
2. The method for producing the manganese oxide-containing composite semipermeable membrane according to claim 1, wherein said manganese oxide is MnO, MnO2、Mn2O3And Mn3O4One or more of (a).
3. The method for producing the manganese oxide-containing composite semipermeable membrane according to claim 1, wherein in step 1, said positive divalent manganese salt is MnCl2Or MnSO4。
4. The method for preparing the manganese oxide-containing composite semipermeable membrane according to claim 1, wherein in step 1, the heating temperature is 350-.
5. The method for manufacturing a manganese oxide-containing composite semipermeable membrane according to claim 1, wherein in step 2, the method for manufacturing cellulose nitrate comprises: soaking absorbent cotton in a mixed solution composed of concentrated nitric acid and concentrated sulfuric acid for a period of time, taking out, washing with water and drying to obtain cellulose nitrate.
6. The method for producing a manganese oxide-containing composite semipermeable membrane according to claim 1, wherein in step 2, the method for producing the semipermeable membrane precursor solution comprises: dissolving the dried cellulose nitrate into a mixed solution of ethyl ether and ethanol, and stirring to obtain a semi-permeable membrane precursor solution.
7. A manganese oxide-containing composite semipermeable membrane, wherein the manganese oxide-containing composite semipermeable membrane is produced by the method according to any one of claims 1 to 6; and the manganese oxide-containing composite semipermeable membrane is used for seawater desalination.
8. The manganese oxide-containing composite semipermeable membrane according to claim 7, wherein the content of manganese oxide in said manganese oxide-containing composite semipermeable membrane is in the range of 5% to 90% by weight.
9. The manganese oxide-containing composite semipermeable membrane according to claim 7, wherein the thickness of said manganese oxide-containing composite semipermeable membrane is 20 to 500 μm.
10. A method for desalinating seawater using the manganese oxide-containing composite semipermeable membrane according to claim 7, comprising the steps of: cover the composite semipermeable membrane on the sea water surface, use the sunlight irradiation composite semipermeable membrane, salt material is held back in one side of composite semipermeable membrane, and fresh water passes through the hole of composite semipermeable membrane to evaporate at the opposite side of composite semipermeable membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810023357.XA CN108211822B (en) | 2018-01-10 | 2018-01-10 | Manganese-containing oxide composite semipermeable membrane, and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810023357.XA CN108211822B (en) | 2018-01-10 | 2018-01-10 | Manganese-containing oxide composite semipermeable membrane, and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108211822A CN108211822A (en) | 2018-06-29 |
| CN108211822B true CN108211822B (en) | 2020-11-03 |
Family
ID=62640867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810023357.XA Active CN108211822B (en) | 2018-01-10 | 2018-01-10 | Manganese-containing oxide composite semipermeable membrane, and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108211822B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551625B (en) * | 2020-11-30 | 2022-07-01 | 中国矿业大学 | Preparation method of wood-based solar seawater desalination material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779889A (en) * | 2012-07-24 | 2012-11-14 | 合肥工业大学 | Energy-stored photoelectric CdTe (Cadmium Telluride) solar cell and manufacturing method thereof |
| CN106668858A (en) * | 2015-11-09 | 2017-05-17 | 首都师范大学 | Method for degrading degradable photo-thermal conversion nano-material |
| CN107158967A (en) * | 2017-06-16 | 2017-09-15 | 上海海事大学 | A kind of carbon containing composite semipermeable membrane, preparation method and the usage that water is evaporated for light |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8216445B2 (en) * | 2006-10-31 | 2012-07-10 | Wisconsin Alumni Research Foundation | Nanoporous insulating oxide deionization device having asymmetric electrodes and method of use thereof |
-
2018
- 2018-01-10 CN CN201810023357.XA patent/CN108211822B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779889A (en) * | 2012-07-24 | 2012-11-14 | 合肥工业大学 | Energy-stored photoelectric CdTe (Cadmium Telluride) solar cell and manufacturing method thereof |
| CN106668858A (en) * | 2015-11-09 | 2017-05-17 | 首都师范大学 | Method for degrading degradable photo-thermal conversion nano-material |
| CN107158967A (en) * | 2017-06-16 | 2017-09-15 | 上海海事大学 | A kind of carbon containing composite semipermeable membrane, preparation method and the usage that water is evaporated for light |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108211822A (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110510689B (en) | Photo-thermal seawater desalination material with multi-stage structure and preparation method and application thereof | |
| CN107158968B (en) | A kind of composite semipermeable membrane containing semiconductor chalcogenide, preparation method and the usage for light evaporation water | |
| Zhao et al. | Cobalt nanoparticle–carbon nanoplate as the solar absorber of a wood aerogel evaporator for continuously efficient desalination | |
| CN107158967B (en) | Carbon-containing composite semipermeable membrane for light evaporation of water, preparation method and application thereof | |
| CN108043238B (en) | A kind of composite semipermeable membrane containing Ti3C2, preparation method and purposes for light evaporation water | |
| CN108715471B (en) | Seawater desalination method based on copper nanoparticle photothermal effect | |
| CN112724427B (en) | Preparation of corn starch/sodium alginate/MXene composite hydrogel and application of composite hydrogel in seawater desalination | |
| CN108126531A (en) | It is a kind of to contain Cu for light evaporation water2-xThe composite semipermeable membrane and its preparation and use of S | |
| CN110003509A (en) | A kind of preparation method of the graphene/nanometer fiber hybrid gel film with photothermal conversion function | |
| Chen et al. | All-natural, eco-friendly composite foam for highly efficient atmospheric water harvesting | |
| CN111961229A (en) | Double-layer hydrogel and preparation method and application thereof | |
| CN111333903B (en) | Preparation method of solar seawater desalination material based on black phosphorus nanosheets | |
| Zhu et al. | Excellent dual-photothermal freshwater collector with high performance in large-scale evaporation | |
| Du et al. | Janus film evaporator with improved light-trapping and gradient interfacial hydrophilicity toward sustainable solar-driven desalination and purification | |
| CN108211822B (en) | Manganese-containing oxide composite semipermeable membrane, and preparation method and application thereof | |
| Zhang et al. | In situ reduction of silver nanoparticles on chitosan hybrid copper phosphate nanoflowers for highly efficient plasmonic solar-driven interfacial water evaporation | |
| Fan et al. | Integrating high-entropy alloy oxides with porous wood architectures for boosted salt-resistant water evaporation | |
| Li et al. | An upcycled wood sponge adsorbent for drinking water purification by solar steam generation | |
| Wu et al. | Interfacial Solar Evaporation: from Fundamental Research to Applications | |
| CN111635604B (en) | Natural colloid composite hydrogel and preparation method and application thereof | |
| CN110984298B (en) | Preparation method of solar-assisted air water making material, product and application thereof | |
| CN116479656A (en) | Photo-thermal layer with efficient photo-thermal conversion function, preparation method of photo-thermal layer and evaporator | |
| Qian et al. | Conductive Metal–Organic Framework Nanosheets Constructed Hierarchical Water Transport Biological Channel for High‐Performance Interfacial Seawater Evaporation | |
| CN107029563B (en) | A kind of composite semipermeable membrane containing Ag, preparation method and the usage for light evaporation water | |
| CN114015124A (en) | Full-biomass hydrogel solar photo-thermal material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |