CN113457467B - High-stability GO-confinement ionic liquid supported liquid membrane and preparation method and application thereof - Google Patents
High-stability GO-confinement ionic liquid supported liquid membrane and preparation method and application thereof Download PDFInfo
- Publication number
- CN113457467B CN113457467B CN202110890077.0A CN202110890077A CN113457467B CN 113457467 B CN113457467 B CN 113457467B CN 202110890077 A CN202110890077 A CN 202110890077A CN 113457467 B CN113457467 B CN 113457467B
- Authority
- CN
- China
- Prior art keywords
- ionic liquid
- membrane
- liquid
- preparation
- confinement
- 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
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- 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
- B01D67/0039—Inorganic membrane manufacture
-
- 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
- B01D67/0039—Inorganic membrane manufacture
- B01D67/0076—Pretreatment of inorganic membrane material prior to membrane formation, e.g. coating of metal powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
-
- 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
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Abstract
The invention discloses an ionic liquid supported liquid membrane with high stability GO confinement, and a preparation method and application thereof. According to the invention, a negative pressure suction filtration method is adopted to enable GO nano sheets to form a two-dimensional film layer on a substrate, and a vacuum-assisted steam traction method is further utilized to confine ionic liquid to a two-dimensional nano channel of the GO film, so that defect repair of the ionic liquid on the two-dimensional GO film layer is realized, and a compact and defect-free GO-confined ionic liquid supported liquid film with the thickness of only 100nm is prepared; the obtained GO confinement ionic liquid supported liquid membrane can be applied to biogas purification. The vacuum-assisted steam traction method greatly reduces the using amount of ionic liquid, saves the cost, and the developed GO-confined ionic liquid supported liquid membrane has good gas permeation separation performance and pressure resistance.
Description
Technical Field
The invention belongs to the technical field of membrane separation, and particularly relates to a high-stability GO confinement ionic liquid supported liquid membrane, and a preparation method and application thereof.
Background
The biogas is used as one of biomass energy sources, is purified and purified to obtain biogas, has four characteristics of cleanness, high efficiency, safety and renewability, and is a very representative bidirectional cleaning process in high-efficiency preparation and comprehensive utilization. The main component of the biogas is methane (CH) 4 55% -65%) and carbon dioxide (CO) 2 30% -40%). The biogas is purified to the methane content of more than 90 percent, thereby replacing petrochemical natural gas and realizing sustainable development of energy and environment. Separation of CO using membrane separation techniques 2 The method has the advantages of low energy consumption, high efficiency, low carbon, environmental protection, simple process, convenient operation and the like, and has attracted high attention in the field of gas separation. Key of membrane separation technologyThe method is characterized by the development of a membrane material with high selectivity, high permeability and high stability.
Ionic liquid supported liquid membrane pair CO 2 Has higher permselectivity and is widely applied to CO in recent years 2 And N 2 、CH 4 And (4) separating a gas system. However, the supported liquid membrane has limited industrial applicability, mainly because the ionic liquid is easily lost from the pores of the substrate. In order to solve the problem, researchers generally adopt a strategy of reducing the pore size of a substrate (an ionic liquid supported liquid membrane with high stability and mesoporous polymer confinement, a preparation method and application thereof, China invention patent application CN107803117A, 2016-9-9; an ionic liquid composite membrane supported by a nano metal organic framework ZIF-8, a preparation method and application thereof, China invention patent application CN112191110A, 2019-07-08). Gan et al (JMembr Sci, 2006, 280, 948) use nanofiltration membranes as substrates and ionic liquids [ C [ ] 4 -mim][NTf 2 ]、[C 10 -mim][NTf 2 ][N 8881 ][NTf 2 ]、[C 8 Py][NTf 2 ]The ionic liquid supported liquid membrane is prepared for the liquid membrane, and research shows that the permeation rate of the gas increases exponentially with the increase of the pressure from 3.0bar to 7.0bar, and the pressure which can be borne by using the nanofiltration membrane as a substrate is far higher than that of a microfiltration membrane. Peng et al (ACSAppl. Mater. interfaces2017, 9, 44251-containing 44257; J. Mater. chem. A, 2018, 6, 16566-containing 16573) applied an ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate [ Bmim ] by a drop coating method][BF 4 ]The ionic liquid supported liquid membrane is obtained by introducing the ionic liquid supported liquid membrane into a two-dimensional nano channel of a molybdenum sulfide or tungsten sulfide membrane layer, the method needs a large amount of ionic liquid, and the obtained composite membrane is thick, so that CO is greatly prevented 2 The mass transfer of (2). In addition, the molybdenum sulfide and tungsten sulfide films are rigid films and are fragile under pressurization, so that the CO of the ionic liquid supported liquid film is not explored due to the pressure difference between two sides of the film 2 /CH 4 Influence of the osmotic separation performance. The ionic liquid supported liquid membrane with the nano-pores as the substrate still generally has the problems of thicker membrane layer, poorer gas permeability, poor pressure resistance and the like.
Disclosure of Invention
The invention aims to provide a preparation method of an ionic liquid supported liquid membrane with high stability GO confinement, which is simple to operate.
The invention also aims to provide the high-stability GO confinement ionic liquid supported liquid membrane prepared by the preparation method, which is thin in thickness and good in gas permeability.
The invention also aims to provide the ionic liquid supported liquid membrane with high stability GO limited domain for separating CO 2 And CH 4 The use of (1).
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the invention provides a preparation method of an ionic liquid supported liquid membrane with high stability GO confinement, which comprises the following steps:
(1) preparing GO nanosheet dispersion liquid:
1) adding Graphene Oxide (GO) nanosheets into deionized water, and performing ultrasonic dispersion to obtain a graphene oxide dispersion liquid with the concentration of 0.01-0.05 g/L;
2) placing the dispersion liquid at a speed of 3000-5000 r/min for centrifugal treatment for 20-30 min, and taking supernatant liquid to prepare a membrane;
(2) preparing a two-dimensional GO film layer:
fixing the alpha-alumina substrate in a negative pressure suction filtration device, placing the supernatant obtained in the step (1) in the negative pressure suction filtration device, and carrying on the substrate surface through vacuum suction filtration to obtain a two-dimensional GO wet film;
(3) confinement of ionic liquids:
1) vacuum degassing the ionic liquid for 5-10 h;
2) adding one drop of the degassed ionic liquid into a reaction device, fixing the GO prepared in the step (2) in a device with the wet membrane face down, wherein the distance between the GO wet membrane and a bottom cavity is 2cm, then placing the device in an environment with the temperature of 100-120 ℃ and the vacuum degree of 0.05MPa for 1-5 h, then drying at room temperature for 10-12 h, and drying at 40 ℃ for 10-12 h in vacuum, thus obtaining the GO confinement ionic liquid supported liquid membrane.
Preferably, the size of the graphene oxide nanosheet in step (1) is 1-2 μm, and the average thickness is 1 nm.
Preferably, the power of the ultrasound in the step (1) is 40W, and the time is 20-30 min.
Preferably, the volume of the supernatant in the step (2) is 10-20 mL.
Preferably, the ionic liquid in step (3) is 1-butyl-3-methylimidazolium tetrafluoroborate [ Emim][BF 4 ]。
Preferably, the reaction device in the step (3) comprises a device body and a sealing cover, the device body is connected with the sealing cover in a matched and covered mode, the device body is of a hollow structure and is provided with a containing cavity, a suction opening is formed in the sealing cover, and the suction opening is connected with a vacuum water pump.
In a second aspect, the invention further provides the high-stability GO confinement ionic liquid supported liquid membrane prepared by the preparation method.
The ionic liquid supported liquid membrane prepared by the method is compact and free of defects, the thickness is only about 100nm, and the ionic liquid supported liquid membrane has good gas permeation and separation performance and pressure resistance.
In a third aspect, the invention also provides a GO limited ionic liquid supported liquid membrane prepared by the preparation method for separating CO 2 And CH 4 The use of (1).
Compared with the prior art, the GO nano-sheets form a two-dimensional film layer on the substrate by adopting a negative pressure suction filtration method, the ionic liquid is confined to the two-dimensional nano-channel of the GO film by further utilizing a vacuum-assisted steam traction method, the defect repair of the ionic liquid on the two-dimensional GO film layer is realized, and the compact and defect-free GO confined ionic liquid supported liquid film with the thickness of only 100nm is prepared. The method adopts GO nanosheets with the size of 1-2 mu m and the thickness of about 1nm, and the high dispersibility and the spreadability of the GO nanosheets are beneficial to the formation of a continuous two-dimensional GO film layer; the method adopts a vacuum-assisted steam traction method to greatly reduce the usage amount of the ionic liquid and save the cost, and the developed GO-confined ionic liquid supported liquid membrane has good gas permeation separation performance and pressure resistance. CO when the pressure difference across the membrane is 0bar 2 The permeability reaches 50.4GPU, CO 2 /CH 4 The selectivity was 47.2; when the pressure on both sides of the membrane increased to 1.5bar, CO 2 The permeability reaches 68.7GPU, CO 2 /CH 4 Is selected from35.2。
Drawings
Fig. 1 is TEM image (a) and AFM image (b) of GO nanosheets of example 1 of the present invention.
Fig. 2 is an SEM image of the GO film of example 1 of the invention: (a) a surface; (b) cross section.
FIG. 3 is a schematic diagram of a homemade device of example 1 of the present invention, in which 1-device body, 2-sealing cover, 3-suction port, 4-vacuum water pump, 5-ionic liquid, 6-GO wet membrane.
Fig. 4 is an SEM image and elemental distribution plot of the GO-confined ionic liquid supported liquid membrane of example 4 of the present invention: (a) a surface; (b) a cross section; (c) n element; (d) and F element.
FIG. 5 shows the GO membrane, GO domain-restricted ionic liquid supported liquid membrane and Emim according to specific example 4 of the present invention][BF 4 ]An infrared spectrum of (1).
FIG. 6 is CO of ionic liquid supported liquid membrane of different GO confinement in application example 1 of the present invention 2 /CH 4 Separation performance.
FIG. 7 shows CO of GO-confined ionic liquid supported liquid membrane by pressure difference between two sides of membrane in application example 1 of the present invention 2 /CH 4 Influence of separation Performance (V) CO2 :V CH4 ＝1:1)。
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
The preparation method of the GO-confined ionic liquid supported liquid membrane comprises the following steps: the preparation method comprises the steps of GO nanosheet dispersion liquid preparation, two-dimensional GO membrane preparation and ionic liquid confinement.
The reaction device used in the preparation process is shown in fig. 3, and comprises a device body 1 and a sealing cover 2, wherein the device body 1 is matched and covered with the sealing cover 2, the device body 1 is of a hollow structure and is provided with a containing cavity, a suction port 3 is formed in the sealing cover 2, and the suction port 3 is connected with a vacuum water pump 4.
Example 1
(1) Preparing GO nanosheet dispersion liquid:
1) dispersing GO nano sheets into deionized water, and carrying out ultrasonic treatment for 30min under the power of 40W to obtain 0.01mg/mLGO dispersion liquid.
2) The dispersion was centrifuged at 5000r/min for 30min, and the supernatant was collected to prepare a film (see FIG. 1).
As shown in figure 1, the GO nano-sheet has good spreadability, the size is about 2.0 μm, and the average thickness is about 1.0 nm.
(2) Preparation of two-dimensional GO membrane:
fixing the flaky alpha-alumina substrate in a negative pressure suction filtration device, taking 10mL of the obtained supernatant, placing the supernatant in the negative pressure suction filtration device, and carrying the supernatant on the substrate surface through vacuum suction filtration to obtain the two-dimensional GO wet membrane (see figure 2).
As shown in FIG. 2, the two-dimensional GO membrane surface has a corrugated structure with an average thickness of 80 nm.
(3) Confinement of ionic liquids:
1) mixing ionic liquid [ Emim][BF 4 ]Vacuum degassing for 5 h;
2) adding one drop of degassed ionic liquid Emim into the cavity of the device][BF 4 ]And then placing the GO wet membrane face downwards in a device body, covering a sealing cover 2 after the GO wet membrane is 2cm away from the bottom of the cavity, then placing the reaction device in an environment with the temperature of 120 ℃ and the vacuum degree of 0.05MPa for 1h (see figure 3), then drying at room temperature for 12h, and finally drying at 40 ℃ for 12h in vacuum, thus obtaining the GO confinement ionic liquid supporting liquid membrane.
As shown by fig. 3, ionic liquid 5 enters the two-dimensional channels of GO wet membrane 6 under the traction of water vapor.
Example 2
(1) Preparing GO nanosheet dispersion liquid:
1) dispersing GO nano sheets into deionized water, and carrying out ultrasonic treatment for 30min under the power of 40W to obtain 0.01mg/mLGO dispersion liquid.
2) And (3) placing the dispersion at the speed of 5000r/min for centrifugal treatment for 30min, and taking supernatant to prepare a membrane.
(2) Preparation of two-dimensional GO membrane:
fixing the flaky alpha-alumina substrate in a negative pressure suction filtration device, taking 10mL of the obtained supernatant, placing the supernatant in the negative pressure suction filtration device, and carrying the supernatant on the substrate surface through vacuum suction filtration to obtain the two-dimensional GO wet membrane.
(3) Confinement of ionic liquids:
1) mixing ionic liquid [ Emim][BF 4 ]Vacuum degassing for 5 h;
2) adding one drop of degassed ionic liquid Emim into the cavity of the device][BF 4 ]And then placing the GO wet membrane face downwards in the device body, covering a sealing cover 2 after the GO wet membrane is 2cm away from the bottom of the cavity, then placing the device in an environment with the temperature of 120 ℃ and the vacuum degree of 0.05MPa for 2h, then drying at room temperature for 12h, and finally drying at 40 ℃ for 12h in vacuum, thus obtaining the GO confinement ionic liquid supporting liquid membrane.
Example 3
(1) Preparing GO nanosheet dispersion liquid:
1) dispersing GO nano sheets into deionized water, and carrying out ultrasonic treatment for 30min under the power of 40W to obtain 0.01mg/mLGO dispersion liquid.
2) And (3) placing the dispersion at the speed of 5000r/min for centrifugal treatment for 30min, and taking supernatant to prepare a membrane.
(2) Preparation of two-dimensional GO membrane:
fixing the flaky alpha-alumina substrate in a negative pressure suction filtration device, taking 10mL of the obtained supernatant, placing the supernatant in the negative pressure suction filtration device, and carrying the supernatant on the substrate surface through vacuum suction filtration to obtain the two-dimensional GO wet membrane.
(3) Confinement of ionic liquids:
1) mixing ionic liquid [ Emim][BF 4 ]Vacuum degassing for 5 h;
2) adding one drop of degassed ionic liquid Emim into the cavity of the device][BF 4 ]Placing the GO wet membrane face downwards in a device body, covering a sealing cover 2 after the GO wet membrane is 2cm away from the bottom of a cavity, then placing the device in an environment with the temperature of 120 ℃ and the vacuum degree of 0.05MPa for 3h, then drying at room temperature for 12h, and finally drying at 40 ℃ for 12h in vacuum, thus obtaining the GO confinement ionic liquid supporting liquid membrane.
Example 4
(1) Preparing GO nanosheet dispersion liquid:
1) dispersing GO nano sheets into deionized water, and performing ultrasonic treatment for 30min under the power of 40W to obtain 0.01mg/mL GO dispersion liquid.
2) And (3) placing the dispersion at the speed of 5000r/min for centrifugal treatment for 30min, and taking supernatant to prepare a membrane.
(2) Preparation of two-dimensional GO membrane:
fixing the flaky alpha-alumina substrate in a negative pressure suction filtration device, taking 10mL of the obtained supernatant, placing the supernatant in the negative pressure suction filtration device, and carrying the supernatant on the substrate surface through vacuum suction filtration to obtain the two-dimensional GO wet membrane.
(3) Confinement of ionic liquids:
1) mixing ionic liquid [ Emim][BF 4 ]Vacuum degassing for 5 h;
2) adding one drop of degassed ionic liquid Emim into the cavity of the device][BF 4 ]Placing the GO wet membrane in a device body with the surface facing downwards, covering a sealing cover 2 after the GO wet membrane is 2cm away from the bottom of the cavity, then placing the device in an environment with the temperature of 120 ℃ and the vacuum degree of 0.05MPa for 4h, then drying at room temperature for 12h, and finally drying at 40 ℃ for 12h in vacuum to obtain the GO confined ionic liquid supported liquid membrane (see figures 4 and 5).
As shown in figure 4, the GO-confined ionic liquid supported liquid membrane has unobvious surface wrinkles, uniform and compact surface and no defects, and the average thickness of the membrane is 100 nm. Elements B and F from the ionic liquid are very uniformly distributed in the selected areas, indicating a uniform distribution of the ionic liquid on the membrane surface.
As shown by fig. 5, successful introduction of ionic liquids into GO membranes, negatively charged GO and positively charged [ Bmim] + The interaction between pi-pi and static electricity is generated, which is helpful to improve the mechanical property and the pressure resistance of the membrane.
Example 5
(1) Preparing GO nanosheet dispersion liquid:
1) dispersing GO nano sheets into deionized water, and carrying out ultrasonic treatment for 30min under the power of 40W to obtain 0.01mg/mLGO dispersion liquid.
2) And (3) placing the dispersion at the speed of 5000r/min for centrifugal treatment for 30min, and taking supernatant to prepare a membrane.
(2) Preparation of two-dimensional GO membrane:
fixing the flaky alpha-alumina substrate in a negative pressure suction filtration device, taking 10mL of the obtained supernatant, placing the supernatant in the negative pressure suction filtration device, and carrying the supernatant on the substrate surface through vacuum suction filtration to obtain the two-dimensional GO wet membrane.
(3) Confinement of ionic liquids:
1) mixing ionic liquid [ Emim][BF 4 ]Vacuum degassing for 5 h;
2) adding one drop of degassed ionic liquid Emim into the cavity of the device][BF 4 ]Placing the GO wet membrane face downwards in a device body, covering a sealing cover 2 after the GO wet membrane is 2cm away from the bottom of a cavity, then placing the device in an environment with the temperature of 120 ℃ and the vacuum degree of 0.05MPa for 5h, then drying at room temperature for 12h, and finally drying at 40 ℃ for 12h in vacuum, thus obtaining the GO confinement ionic liquid supporting liquid membrane.
Application example 1
Subjecting the respective GO-confined Ionic liquid supported liquid membranes prepared in examples 1-5 above to CO 2 /CH 4 Separation performance test, test conditions: CO 2 2 /CH 4 (50/50, vol%), 25 ℃ and a pressure difference of 0bar across the membrane.
The test results are shown in FIG. 6. FIG. 6 shows CO for GO limited ionic liquid supported liquid membrane made in example 1 2 Permeation rate of 71.6GPU, CO 2 /CH 4 The selectivity is 3.4; example 2 CO production of GO confined Ionic liquid supported liquid membranes 2 Permeation rate of 57.3GPU, CO 2 /CH 4 The selectivity was 19.4; example 3 CO production of GO confined Ionic liquid supported liquid membranes 2 Permeation rate was 53.1GPU, CO 2 /CH 4 The selectivity was 37.0; example 4 CO production of GO confined Ionic liquid supported liquid membranes 2 Permeation rate of 50.4GPU, CO 2 /CH 4 The selectivity was 47.2; example 5 CO production of GO confined Ionic liquid supported liquid membranes 2 Permeation rate of 45.0GPU, CO 2 /CH 4 The selectivity was 44.4.
Application example 2
CO treatment of GO-confined Ionic liquid supported liquid membranes prepared in example 4 2 /CH 4 Separation performance test, test conditions: CO 2 2 /CH 4 (50/50，vol％)，25℃。
The test results are shown in FIG. 7. FIG. 7 shows that GO-confined ionic liquid supported liquid membrane is coupled with CO as pressure increases 2 /CH 4 The separation performance of (A) is slightly reduced, and when the pressure difference between the two sides of the membrane is 0bar, CO is generated 2 The permeability reaches 50.4GPU, CO 2 /CH 4 The selectivity was 47.2; when the pressure on both sides of the membrane increased to 1.5bar, CO 2 The permeability reaches 68.7GPU, CO 2 /CH 4 The selectivity was 35.2.
Claims (7)
1. A preparation method of a high-stability GO-confinement ionic liquid supported liquid membrane is characterized by comprising the following steps: the method comprises the following steps:
(1) preparing GO nanosheet dispersion liquid:
adding graphene oxide nanosheets into deionized water, and performing ultrasonic dispersion to obtain graphene oxide dispersion liquid with the concentration of 0.01-0.05 g/L; placing the dispersion liquid at a speed of 3000-5000 r/min for centrifugal treatment for 20-30 min, and taking supernatant liquid to prepare a membrane; the size of the graphene oxide nanosheet is 1-2 microns, and the average thickness is 1 nm;
(2) preparation of a two-dimensional GO membrane layer:
fixing the alpha-alumina substrate in a negative pressure suction filtration device, placing the supernatant obtained in the step (1) in the negative pressure suction filtration device, and carrying out vacuum suction filtration on the substrate surface to obtain a two-dimensional GO wet film;
(3) confinement of ionic liquids:
1) vacuum degassing the ionic liquid for 5-10 h;
2) adding one drop of the degassed ionic liquid into a reaction device, fixing the GO prepared in the step (2) in a device with the wet membrane face down, wherein the distance between the GO wet membrane and a bottom cavity is 2cm, then placing the device in an environment with the temperature of 100-120 ℃ and the vacuum degree of 0.05MPa for 1-5 h, then drying at room temperature for 10-12 h, and drying at 40 ℃ for 10-12 h in vacuum, thus obtaining the GO confinement ionic liquid supported liquid membrane.
2. The preparation method of the high-stability GO-confined ionic liquid supported liquid membrane according to claim 1, wherein the preparation method comprises the following steps: the power of the ultrasound in the step (1) is 40W, and the time is 20-30 min.
3. The method for preparing a GO-confined ionic liquid supported liquid membrane according to claim 1, wherein the method comprises the following steps: and (3) the volume of the supernatant in the step (2) is 10-20 mL.
4. The method for preparing a GO-confined ionic liquid supported liquid membrane according to claim 1, wherein the method comprises the following steps: and (3) in the step (3), the ionic liquid is 1-butyl-3-methylimidazolium tetrafluoroborate [ Emim ] [ BF4 ].
5. The method for preparing a GO-confined ionic liquid supported liquid membrane according to claim 1, wherein the method comprises the following steps: the reaction device in the step (3) comprises a device body (1) and a sealing cover (2), the device body (1) is matched and covered with the sealing cover (2) to be connected, the device body (1) is of a hollow structure and is provided with a containing cavity, a suction port (3) is formed in the sealing cover (2), and the suction port (3) is connected with a vacuum water pump (4).
6. A GO domain-limited ionic liquid supported liquid membrane prepared by the preparation method of any one of claims 1 to 5.
7. The GO domain-limited ionic liquid supported liquid membrane of claim 6 in the separation of CO 2 And CH 4 The use of (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110890077.0A CN113457467B (en) | 2021-08-04 | 2021-08-04 | High-stability GO-confinement ionic liquid supported liquid membrane and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110890077.0A CN113457467B (en) | 2021-08-04 | 2021-08-04 | High-stability GO-confinement ionic liquid supported liquid membrane and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113457467A CN113457467A (en) | 2021-10-01 |
| CN113457467B true CN113457467B (en) | 2022-08-02 |
Family
ID=77883875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110890077.0A Active CN113457467B (en) | 2021-08-04 | 2021-08-04 | High-stability GO-confinement ionic liquid supported liquid membrane and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113457467B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114452837B (en) * | 2022-03-02 | 2023-01-17 | 重庆工商大学 | MXene two-dimensional thin film defect repairing method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229486A (en) * | 2007-01-26 | 2008-07-30 | 中国石油化工股份有限公司 | Method of preparing ionic liquid supporting liquid sheet for organic solvent separation |
| CN103372377A (en) * | 2012-04-25 | 2013-10-30 | 同济大学 | Preparation method of imidazole-type ion liquid gel supported liquid membrane for gas separation |
| CN106975370A (en) * | 2017-04-01 | 2017-07-25 | 浙江大学 | Ionic liquid/transition metal dichalcogenide gas separation membrane and its application are prepared using capillary effect |
| CN107803117A (en) * | 2016-09-09 | 2018-03-16 | 中国科学院青岛生物能源与过程研究所 | A kind of ionic liquid supporting liquid sheet of high stability mesoporous polymer confinement and its preparation method and application |
| CN109621647A (en) * | 2019-01-15 | 2019-04-16 | 浙江大学 | A kind of method of separation and concentration carbon dioxide |
| WO2019156635A1 (en) * | 2018-02-08 | 2019-08-15 | Nanyang Technological University | Graphene frameworks membranes for separation of immiscible liquids |
| CN111167529A (en) * | 2020-01-15 | 2020-05-19 | 合肥工业大学 | Method for manufacturing self-closed micro-nano fluid control system based on solution auxiliary evaporation |
| CN111804160A (en) * | 2020-06-04 | 2020-10-23 | 五邑大学 | Ionic liquid modified graphene oxide membrane with water and ion selective transmission performance and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9044566B2 (en) * | 2013-03-01 | 2015-06-02 | Reaction Systems, Llc | Advanced supported liquid membranes for carbon dioxide control in extravehicular activity applications |
-
2021
- 2021-08-04 CN CN202110890077.0A patent/CN113457467B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101229486A (en) * | 2007-01-26 | 2008-07-30 | 中国石油化工股份有限公司 | Method of preparing ionic liquid supporting liquid sheet for organic solvent separation |
| CN103372377A (en) * | 2012-04-25 | 2013-10-30 | 同济大学 | Preparation method of imidazole-type ion liquid gel supported liquid membrane for gas separation |
| CN107803117A (en) * | 2016-09-09 | 2018-03-16 | 中国科学院青岛生物能源与过程研究所 | A kind of ionic liquid supporting liquid sheet of high stability mesoporous polymer confinement and its preparation method and application |
| CN106975370A (en) * | 2017-04-01 | 2017-07-25 | 浙江大学 | Ionic liquid/transition metal dichalcogenide gas separation membrane and its application are prepared using capillary effect |
| WO2019156635A1 (en) * | 2018-02-08 | 2019-08-15 | Nanyang Technological University | Graphene frameworks membranes for separation of immiscible liquids |
| CN109621647A (en) * | 2019-01-15 | 2019-04-16 | 浙江大学 | A kind of method of separation and concentration carbon dioxide |
| CN111167529A (en) * | 2020-01-15 | 2020-05-19 | 合肥工业大学 | Method for manufacturing self-closed micro-nano fluid control system based on solution auxiliary evaporation |
| CN111804160A (en) * | 2020-06-04 | 2020-10-23 | 五邑大学 | Ionic liquid modified graphene oxide membrane with water and ion selective transmission performance and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| Graphene oxide reinforced facilitated transport membrane with poly(ionic liquid) and ionic liquid carriers for CO2/N2 separation;Yun-YangLee等;《Journal of Membrane Science》;20210731;第638卷;第1-10页 * |
| Two-dimensional graphene oxide based membranes for ionic and molecular separation: Current status and challenges;Shania Sharifa等;《Journal of Environmental Chemical Engineering》;20210503;第9卷;第2-11页 * |
| 离子液体接枝型PI/GO膜的制备及CO2/N2分离的应用;贝鹏志等;《化工进展》;20201231;第39卷(第11期);第4550-4556页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113457467A (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | MCM-41@ ZIF-8/PDMS hybrid membranes with micro-and nanoscaled hierarchical structure for alcohol permselective pervaporation | |
| Gongping et al. | Pervaporation separation of butanol-water mixtures using polydimethylsiloxane/ceramic composite membrane | |
| CN107469633B (en) | Method for preparing membrane with enhanced water flux | |
| CN104722215B (en) | Preparation method of carbon dioxide separation film based on graphene material | |
| Li et al. | Cross-linked graphene membrane for high-performance organics separation of emulsions | |
| Kim et al. | Highly selective porous separator with thin skin layer for alkaline water electrolysis | |
| Hao et al. | Inorganic microporous membranes for hydrogen separation: Challenges and solutions | |
| CN113457467B (en) | High-stability GO-confinement ionic liquid supported liquid membrane and preparation method and application thereof | |
| CN109621647B (en) | Method for separating and enriching carbon dioxide | |
| CN112897484B (en) | Defect-free g-C 3 N 4 Nanoplatelets, two-dimensional g-C 3 N 4 Nanosheet film and preparation method and application thereof | |
| Ma et al. | Surfactant-modified graphene oxide membranes with tunable structure for gas separation | |
| CN108283889B (en) | Composite membrane, preparation method thereof and application thereof in gas separation and purification | |
| CN1709560A (en) | Tubular supporting carbon molecular sieve membrance and its preparing method | |
| CN110917822A (en) | High-flux high-selectivity thin-layer composite membrane for hydrogen separation and preparation method thereof | |
| Wang et al. | Efficient oil-in-water emulsion separation in the low-cost bauxite ceramic membranes with hierarchically oriented straight pores | |
| CN105032216A (en) | Attapulgite-polyether-b-polyamide mixed matrix membrane as well as preparation and application thereof | |
| CN113509845B (en) | Graphene oxide-cage type oligomeric silsesquioxane hybrid membrane for preferential alcohol permeation, preparation and application | |
| Liu et al. | Ultrathin reinforced composite separator for alkaline water electrolysis: Comprehensive performance evaluation | |
| Wu et al. | Extraction of butanol from ABE solution by MFI zeolite membranes | |
| CN109012222B (en) | Preparation and application of composite membrane for producing alcohol compounds by purification biological method | |
| Ren et al. | Long alkyl chain-containing organosilica/silicalite-1 composite membranes for alcohol recovery | |
| CN112657349B (en) | Preparation method of multilayer zeolite hybrid membrane | |
| CN114873677A (en) | Solar photo-thermal conversion water treatment method and device for resisting salt deposition | |
| CN107051219B (en) | Preparation and application of ionic liquid/graphene oxide gas separation membrane | |
| CN117018885A (en) | Water treatment separation membrane, device and application of nuclear wastewater treatment |
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 |