CN105413464A - Preparation method for graphene quantum dot added forward osmosis membrane, prepared forward osmosis membrane and application thereof - Google Patents
Preparation method for graphene quantum dot added forward osmosis membrane, prepared forward osmosis membrane and application thereof Download PDFInfo
- Publication number
- CN105413464A CN105413464A CN201510731120.3A CN201510731120A CN105413464A CN 105413464 A CN105413464 A CN 105413464A CN 201510731120 A CN201510731120 A CN 201510731120A CN 105413464 A CN105413464 A CN 105413464A
- Authority
- CN
- China
- Prior art keywords
- quantum dot
- graphene quantum
- osmosis membrane
- forward osmosis
- preparation
- 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
Classifications
-
- 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
- B01D61/002—Forward osmosis or direct osmosis
-
- 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
- B01D67/0002—Organic membrane manufacture
- B01D67/0006—Organic membrane manufacture by chemical reactions
-
- 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
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/60—Polyamines
-
- 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
- C02F1/445—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by forward 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
- Y02A20/131—Reverse-osmosis
Abstract
The invention discloses a preparation method for a graphene quantum dot added forward osmosis membrane, the prepared forward osmosis membrane and application thereof. The preparation method for the graphene quantum dot added forward osmosis membrane comprises an aqueous-phase monomer solution preparing step, an organic-phase solution preparing step and an interface polymerization reaction step. According to the preparation method, graphene quantum dot nanoparticles are added in a graphene preparation process, the preparation process is simple, the cost is low, and the prepared forward osmosis membrane better solves the problem of interior concentration difference polarization and has relatively low reverse salt flux.
Description
Technical field
The invention belongs to technical field of membrane separation, be specifically related to a kind of application adding the forward osmosis membrane preparation method of graphene quantum dot, prepared forward osmosis membrane and this film.
Background technology
In recent years, scarcity of fresh water resources has become the bottleneck of restriction social progress and economic development.Because seawater resources on the earth are very abundant, desalinization has become the strategic choice solving water resources crisis, and UF membrane obtains the direction that clean fresh water becomes more and more scientist research.
Reverse osmosis seawater desalting has become one of most important desalination technology, but its operating pressure is high, energy ezpenditure is large, film service life is shorter, Water Sproading rate is lower, these shortcomings constrain the development space of hyperfiltration desalinization, make it the bottleneck encountering development.Just permeating (forwardosmosis, FO) is that one utilizes permeable pressure head as driving force membrane separation technique, and it has low energy consumption, low fouling membrane, high water flux, the feature of high salt rejection.In theory, by adopting the driving solution of hyperosmosis can obtain larger water flux, but find that real fluxes is much smaller than theoretical value in experiment, this due to exist in positive process of osmosis serious in concentration polarization phenomenon.
Interfacial polymerization is one of film-forming method commonly used now.Interfacial polymerization is the monomer that utilizes two kinds of reactivities very high at two immiscible solvent interface place polymerization reaction take places, forms fine and close composite bed.But still there is serious concentration polarization problem in film prepared by the interfacial polymerization of routine.
In order to develop the more excellent macromolecular nano filtering membrane material of performance, in interfacial polymerization, introducing inorganic nano composite material and utilize its physical crosslinking effect, preparing novel organic-inorganic hybrid films, become study hotspot in recent years.As, utilize nano-TiO
2, mesoporous SiO
2, MOFs (MetalOrganicFrameworks) etc. are as nano unit.But still there is significant defect in the organic-inorganic hybrid films adding above-mentioned material, the preparation method therefore developing a kind of new forward osmosis membrane remains the significant challenge of art in reverse flux salt and interior concentration polarization etc.
Summary of the invention
The object of the invention is to for solving the reverse flux salt of forward osmosis membrane in prior art higher, the technical problem that interior concentration polarization problem is serious, a kind of preparation method of forward osmosis membrane of the interpolation graphene quantum dot based on interfacial polymerization techniques is proposed, prepared film has higher water flux and salt crown_interception, improves the performance of film on the whole.
On the one hand, the present invention is basement membrane with milipore filter, utilizes interfacial polymerization techniques to prepare forward osmosis membrane, and technical scheme of the present invention is as follows.
Add a preparation method for the forward osmosis membrane of graphene quantum dot, comprise the steps,
Step one: the preparation of aqueous phase monomers solution
A certain amount of high molecular polymer amine or Small molecular diamines are dissolved in deionized water, add a certain amount of graphene quantum dot nano particle, stir, make aqueous phase monomers solution;
Step 2: the preparation of organic phase solution
A certain amount of polynary acyl chlorides is dissolved in organic solvent, makes organic phase solution;
Step 3: interface polymerization reaction
Basement membrane is immersed in 5-60min in aqueous phase monomers solution, takes out the aqueous phase monomers solution drying film surface in atmosphere; Film after drying is immersed 10-120s in organic phase solution, interface polymerization reaction occurs, form composite bed; By the heat treatment 5-30min at 50-90 DEG C of the film after interfacial polymerization, removing organic solvent also promotes that interface polymerization reaction is complete.
Preferably, high molecular polymer amine of the present invention is polymine, and Small molecular diamines is m-phenylene diamine (MPD).
Preferably, polynary acyl chlorides of the present invention is pyromellitic trimethylsilyl chloride.
Preferably, graphene quantum dot nano particle of the present invention is containing carboxyl functional group and monomer diameter is the graphene quantum dot nano particle of 5-25nm.
Preferably, the mass percent concentration of high molecular polymer amine of the present invention is 0.1-1.0%, and graphene quantum dot nanoparticle mass percent concentration is 0.01-0.2%.
Preferably, the polynary acyl chlorides mass percent concentration of organic phase of the present invention is 0.05-1.0%.
Preferably, the preparation of graphene quantum dot nano particle of the present invention and method of purification, comprise the steps,
Step I:
A certain amount of anhydrous citric acid is heated to 150-300 DEG C, by gained solution instillation aqueous slkali after 20-40min, then regulates pH to 7 with acid solution;
Step II:
Step I gained solution is utilized Ultra filtration membrane, collects gained filtrate; Utilize NF membrane to be separated gained filtrate again, constantly in nanofiltration trapped fluid, add deionized water, the electrical conductivity to nanofiltration filter liquor is less than 50 μ s/cm, and remaining nanofiltration trapped fluid is graphene quantum dot solution.
Preferably, aqueous slkali of the present invention is sodium hydroxide solution, and acid solution is hydrochloric acid.
Preferably, the electrical conductivity of nanofiltration filter liquor of the present invention is less than 20 μ s/cm.
Preferably, the molecular cut off of milipore filter of the present invention is less than 50000 dalton.
Preferably, the molecular cut off of NF membrane of the present invention is greater than 500 dalton.
On the other hand, the present invention asks to protect a kind of forward osmosis membrane adding graphene quantum dot further, and it is prepared by above-mentioned method.
On the other hand, the present invention asks to protect above-mentioned a kind of application adding the forward osmosis membrane of graphene quantum dot, for desalinization, sewage disposal or food processing further.
The test condition of the film prepared by the present invention: take deionized water as material liquid, 0.5mol/LMgCl
2for drawing liquid, at room temperature crossflow velocity is the performance of testing prepared forward osmosis membrane under the condition of 12.8cm/s, water flux J
vwith reverse flux salt J
s, be calculated as follows respectively:
Wherein, A is effective film area, and Δ V is through liquid and amasss, Δ (C
tv
t) be mass change in testing time t.
Graphene quantum dot is a kind of nano material of accurate zero dimension, and due to quantum confinement effect, graphene quantum dot has the character of many uniquenesses, and the shape of graphene quantum dot, size and rim condition determine their electricity, optics, chemical characteristic.Graphene quantum dot is creatively applied in the membrane process just permeated by the present invention, improves the performance of film, achieves significant technique effect.
The present invention adds graphene quantum dot nano particle in film preparation process, and preparation process is simple, with low cost, nontoxic, directly can add aqueous phase, without the need to additional condition, prepared forward osmosis membrane significantly reduces reverse flux salt, alleviates the impact of interior concentration polarization.
Detailed description of the invention
Below by specific embodiment and comparative example, the present invention will be further described.
Comparative example 1:
Basement membrane is polyacrylonitrile (PAN) flat-plate ultrafiltration membrane, molecular cut off 50000Da (dalton); Effective film area 28.86cm
2; Macromolecule amine used is polymine (PEI, mean molecule quantity is 1300 dalton); Polynary acyl chlorides used is pyromellitic trimethylsilyl chloride (TMC); Its preparation process is as follows:
Step one: the modification of basement membrane
Under 65 DEG C of constant temperatures, polyacrylonitrile ultrafiltration film is immersed 1h in the NaOH solution of 2mol/L;
Take out basement membrane, fall the NaOH solution on film surface with deionized water rinsing, be neutral to rinsing liquid pH, obtain modification basement membrane;
Step 2: the preparation of aqueous phase solution
Be dissolved in deionized water by described high molecular polymer amine, mass concentration is 4g/L;
Step 3: the preparation of organic phase solution
Described polynary acyl chlorides is dissolved in n-hexane, mass percent concentration 0.2%;
Step 4: interface polymerization reaction
Modification basement membrane is immersed in 10min in aqueous phase solution, after draining in air, is immersed in 90s in organic phase solution, after taking-up at 70 DEG C heat treatment 15min.
Evaluate prepared forward osmosis membrane, both sides crossflow velocity is 12.8cm/s, and feeding liquid is deionized water, and drawing liquid is 0.5mol/L magnesium chloride solution, tests 30min under room temperature condition; The water flux of the forward osmosis membrane of preparation is 10.7L/ (m
2h), reverse flux salt is 2.15g/ (m
2h).
Embodiment 1
A certain amount of anhydrous citric acid is heated to 200 DEG C, by gained solution instillation sodium hydroxide solution after 30min, then regulates pH to 7 with hydrochloric acid solution; Above-mentioned solution is utilized the Ultra filtration membrane of 50,000 dalton's molecular cut offs, collect gained filtrate; Gained filtrate utilized molecular cut off to be that 500 daltonian NF membrane are separated again, constantly in nanofiltration trapped fluid, add deionized water, the electrical conductivity to nanofiltration filter liquor is less than 50 μ s/cm, and remaining nanofiltration trapped fluid is graphene quantum dot solution;
In aqueous phase solution, add the graphene quantum dot solution that mass concentration is 0.75g/L, other high molecular polymer amine used, polynary acyl chlorides identical with concentration with the kind of comparative example 1, other parameter is also identical with technique, test condition.The water flux of this forward osmosis membrane prepared by embodiment 1 is 14.6L/ (m
2h), reverse flux salt is 1.90g/ (m
2h).
Embodiment 2
The preparation of graphene quantum dot solution is identical with embodiment 1 with purification.In aqueous phase solution, add the graphene quantum dot solution that mass concentration is 0.19g/L, high molecular polymer amine mass concentration is 2g/L, and polynary acyl chlorides is identical with concentration with the kind of comparative example 1, and other parameter is also identical with technique, test condition.The water flux of the forward osmosis membrane prepared by this embodiment is 10.5L/ (m
2h), reverse flux salt is 1.66g/ (m
2h).
Comparative example 2
High molecular polymer amine is replaced by Small molecular diamines, and mass concentration is 15g/L, and heat treatment time changes 10min into, and all the other conditions are identical with comparative example 1.Small molecular diamines is m-phenylene diamine (MPD) (MPD.The water flux of the forward osmosis membrane prepared by this comparative example is 9.2L/ (m
2h), reverse flux salt is 0.91g/ (m
2h).
Embodiment 3
The preparation of graphene quantum dot solution is identical with embodiment 1 with purification.In aqueous phase solution, add the graphene quantum dot solution that mass concentration is 0.75g/L, other Small molecular diamines used, polynary acyl chlorides identical with ratio with the kind of comparative example 2, other parameter is also identical with technique, test condition.The water flux of the forward osmosis membrane prepared by this embodiment is 7.7L/ (m
2h), reverse flux salt is 0.42g/ (m
2h).
Embodiment 4
The preparation of graphene quantum dot solution is identical with embodiment 1 with purification.In aqueous phase solution, add the graphene quantum dot solution that mass concentration is 0.19g/L, Small molecular diamines mass concentration 5g/L, polynary acyl chlorides identical with concentration with the kind of comparative example 2, other parameter is also identical with technique, test condition.The water flux of the forward osmosis membrane prepared by this embodiment is 6.5L/ (m
2h), reverse flux salt is 0.35g/ (m
2h).
Each embodiment and comparative example as shown in table 1.Table 1:
As can be seen from Table 1, add graphene quantum dot nano particle for the forward osmosis membrane prepared by different aqueous phase monomers amine, the surface nature of separating layer can be changed, the water flux of the FO film adopting polyamine to prepare slightly improves, the FO film water amount adopting small molecule amine to prepare slightly declines, but oppositely flux salt reduces all by a relatively large margin.Can find out, graphene quantum dot is applied in the membrane process just permeated by the present invention, improves the performance of film, achieves significant technique effect.
It is to be noted; above-described embodiment is only the preferred specific embodiment of the present invention; be not construed as limiting the invention, any embodiment fallen in the feature of the claims in the present invention or protection scope of the present invention of equivalent feature formation is all formed invades patent right of the present invention.
Claims (10)
1. add a preparation method for the forward osmosis membrane of graphene quantum dot, it is characterized in that, comprise the steps,
Step one: the preparation of aqueous phase monomers solution
A certain amount of high molecular polymer amine or Small molecular diamines are dissolved in deionized water, add a certain amount of graphene quantum dot nano particle, stir, make aqueous phase monomers solution;
Step 2: the preparation of organic phase solution
A certain amount of polynary acyl chlorides is dissolved in organic solvent, makes organic phase solution;
Step 3: interface polymerization reaction
Basement membrane is immersed in 5-60min in aqueous phase monomers solution, takes out the aqueous phase monomers solution drying film surface in atmosphere; Film after drying is immersed 10-120s in organic phase solution, interface polymerization reaction occurs, form composite bed; By the heat treatment 5-30min at 50-90 DEG C of the film after interfacial polymerization, removing organic solvent also promotes that interface polymerization reaction is complete.
2. a kind of preparation method adding the forward osmosis membrane of graphene quantum dot according to claim 1, is characterized in that, described high molecular polymer amine is polymine, and Small molecular diamines is m-phenylene diamine (MPD).
3. a kind of preparation method adding the forward osmosis membrane of graphene quantum dot according to claim 1, is characterized in that, described polynary acyl chlorides is pyromellitic trimethylsilyl chloride.
4. a kind of preparation method adding the forward osmosis membrane of graphene quantum dot according to claim 1, is characterized in that, described graphene quantum dot nano particle is containing carboxyl functional group and monomer diameter is the graphene quantum dot nano particle of 5-25nm.
5. a kind of preparation method adding the forward osmosis membrane of graphene quantum dot according to claim 1 and 2, it is characterized in that, the mass percent concentration of described high molecular polymer amine is 0.1-1.0%, and graphene quantum dot nanoparticle mass percent concentration is 0.01-0.2%.
6. a kind of preparation method adding the forward osmosis membrane of graphene quantum dot according to claim 1 or 3, is characterized in that, the polynary acyl chlorides mass percent concentration of described organic phase is 0.05-1.0%.
7. a kind of preparation method adding the forward osmosis membrane of graphene quantum dot according to claim 1 or 4, it is characterized in that, the preparation of graphene quantum dot nano particle and method of purification, comprise the steps,
Step I: a certain amount of anhydrous citric acid is heated to 150 ~ 300 DEG C, by gained solution instillation aqueous slkali after 20-40min, then regulates pH to 7 with acid solution;
Step II: step I gained solution is utilized Ultra filtration membrane, collects gained filtrate; Utilize NF membrane to be separated gained filtrate again, constantly in nanofiltration trapped fluid, add deionized water, the electrical conductivity to nanofiltration filter liquor is less than 50 μ s/cm, and the nanofiltration trapped fluid after concentrated is graphene quantum dot solution.
8. a kind of preparation method adding the forward osmosis membrane of graphene quantum dot according to claim 7, is characterized in that, preferably, described aqueous slkali is sodium hydroxide solution, and acid solution is hydrochloric acid; Preferably, the electrical conductivity of described nanofiltration filter liquor is less than 20 μ s/cm; Preferably, the molecular cut off of described milipore filter is less than 50000 dalton; Preferably, the molecular cut off of described NF membrane is greater than 500 dalton.
9. add a forward osmosis membrane for graphene quantum dot, it is characterized in that, described forward osmosis membrane is prepared by the preparation method described in claim 1-8 any one.
10. a kind of application adding the forward osmosis membrane of graphene quantum dot according to claim 9, is characterized in that, for desalinization, sewage disposal or food processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510731120.3A CN105413464A (en) | 2015-10-22 | 2015-10-22 | Preparation method for graphene quantum dot added forward osmosis membrane, prepared forward osmosis membrane and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510731120.3A CN105413464A (en) | 2015-10-22 | 2015-10-22 | Preparation method for graphene quantum dot added forward osmosis membrane, prepared forward osmosis membrane and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105413464A true CN105413464A (en) | 2016-03-23 |
Family
ID=55492269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510731120.3A Pending CN105413464A (en) | 2015-10-22 | 2015-10-22 | Preparation method for graphene quantum dot added forward osmosis membrane, prepared forward osmosis membrane and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105413464A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771696A (en) * | 2016-04-29 | 2016-07-20 | 中国海洋大学 | Grapheme oxide quantum dot function sphere nanoparticle, polyamide reverse osmosis membrane/nanofiltration membrane modified by nanoparticle and preparation method |
| CN106215720A (en) * | 2016-04-18 | 2016-12-14 | 中国海洋大学 | Preparation method, prepared ultrafilter membrane and the application of this ultrafilter membrane of a kind of doped graphene quantum dot organic solvent-resistant ultrafilter membrane |
| CN107349787A (en) * | 2017-07-14 | 2017-11-17 | 中国海洋大学 | A kind of application of the forward osmosis membrane preparation method for adding amination graphene quantum dot, prepared forward osmosis membrane and the film |
| CN107469637A (en) * | 2017-07-14 | 2017-12-15 | 中国海洋大学 | A kind of preparation method of high flux solvent-resistant polyimide hybrid composite membrane |
| CN107469651A (en) * | 2017-08-22 | 2017-12-15 | 中国海洋大学 | A kind of preparation method and applications of high flux crosslinked polyimide solvent resistant NF membrane |
| CN108654378A (en) * | 2018-03-23 | 2018-10-16 | 南京理工大学 | The homogeneous forward osmosis membrane of self-supporting and its preparation method and application of interior concentration polarization can be eliminated |
| CN109224888A (en) * | 2017-07-10 | 2019-01-18 | 浙江工业大学 | A kind of graphene oxide framework modified polyamide reverse osmose membrane and its application |
| CN109499397A (en) * | 2018-12-13 | 2019-03-22 | 天津工业大学 | A kind of modified Nano composite membrane and its preparation method and application |
| WO2019135710A1 (en) * | 2018-01-03 | 2019-07-11 | National University Of Singapore | A thin film composite membrane |
| CN110141978A (en) * | 2019-03-06 | 2019-08-20 | 中国海洋大学 | A kind of ultra-thin composite membrane and preparation method thereof |
| WO2020177274A1 (en) * | 2019-03-06 | 2020-09-10 | 中国海洋大学 | Composite membrane, preparation method therefor and application thereof |
| CN113777087A (en) * | 2021-07-23 | 2021-12-10 | 华南农业大学 | Ratiometric fluorescence analysis method for detecting nitrite |
| CN115400607A (en) * | 2022-06-16 | 2022-11-29 | 天津大学 | High-performance nanofiltration membrane and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890315A (en) * | 2010-08-06 | 2010-11-24 | 复旦大学 | Carbon nano tube-polymer composite nanofiltration membrane and preparation method thereof |
| CN103182252A (en) * | 2011-12-28 | 2013-07-03 | 中国科学院宁波材料技术与工程研究所 | Novel composite forward osmosis membrane and preparation method thereof |
| CN103861472A (en) * | 2014-03-28 | 2014-06-18 | 东华大学 | Preparation method of amino-modified graphene oxide composite positive permeable film |
| US20150064720A1 (en) * | 2013-08-28 | 2015-03-05 | Nanyang Technological University | Biomolecule-graphene quantum dot conjugates and use thereof |
| WO2015079442A1 (en) * | 2013-11-28 | 2015-06-04 | B. G. Negev Technologies And Applications Ltd | Fabrication and modification of polymer membranes using ink-jet printing |
-
2015
- 2015-10-22 CN CN201510731120.3A patent/CN105413464A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890315A (en) * | 2010-08-06 | 2010-11-24 | 复旦大学 | Carbon nano tube-polymer composite nanofiltration membrane and preparation method thereof |
| CN103182252A (en) * | 2011-12-28 | 2013-07-03 | 中国科学院宁波材料技术与工程研究所 | Novel composite forward osmosis membrane and preparation method thereof |
| US20150064720A1 (en) * | 2013-08-28 | 2015-03-05 | Nanyang Technological University | Biomolecule-graphene quantum dot conjugates and use thereof |
| WO2015079442A1 (en) * | 2013-11-28 | 2015-06-04 | B. G. Negev Technologies And Applications Ltd | Fabrication and modification of polymer membranes using ink-jet printing |
| CN103861472A (en) * | 2014-03-28 | 2014-06-18 | 东华大学 | Preparation method of amino-modified graphene oxide composite positive permeable film |
Non-Patent Citations (1)
| Title |
|---|
| YONGQIANG DONG等: ""Blue luminescent graphene quantum dots and grapheme oxide prepared by tuning the carbonization degree of citric acid"", 《CARBON》 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106215720A (en) * | 2016-04-18 | 2016-12-14 | 中国海洋大学 | Preparation method, prepared ultrafilter membrane and the application of this ultrafilter membrane of a kind of doped graphene quantum dot organic solvent-resistant ultrafilter membrane |
| CN105771696A (en) * | 2016-04-29 | 2016-07-20 | 中国海洋大学 | Grapheme oxide quantum dot function sphere nanoparticle, polyamide reverse osmosis membrane/nanofiltration membrane modified by nanoparticle and preparation method |
| CN105771696B (en) * | 2016-04-29 | 2018-07-17 | 中国海洋大学 | Graphene oxide quantum dot functional ball nano-particle, the polyamide reverse osmose membrane/NF membrane and preparation method being modified |
| CN109224888A (en) * | 2017-07-10 | 2019-01-18 | 浙江工业大学 | A kind of graphene oxide framework modified polyamide reverse osmose membrane and its application |
| CN107349787A (en) * | 2017-07-14 | 2017-11-17 | 中国海洋大学 | A kind of application of the forward osmosis membrane preparation method for adding amination graphene quantum dot, prepared forward osmosis membrane and the film |
| CN107469637A (en) * | 2017-07-14 | 2017-12-15 | 中国海洋大学 | A kind of preparation method of high flux solvent-resistant polyimide hybrid composite membrane |
| CN107349787B (en) * | 2017-07-14 | 2021-08-03 | 中国海洋大学 | Preparation method of forward osmosis membrane added with aminated graphene quantum dots, prepared forward osmosis membrane and application of forward osmosis membrane |
| CN107469651A (en) * | 2017-08-22 | 2017-12-15 | 中国海洋大学 | A kind of preparation method and applications of high flux crosslinked polyimide solvent resistant NF membrane |
| WO2019135710A1 (en) * | 2018-01-03 | 2019-07-11 | National University Of Singapore | A thin film composite membrane |
| CN111565826A (en) * | 2018-01-03 | 2020-08-21 | 新加坡国立大学 | Thin film composite film |
| CN108654378B (en) * | 2018-03-23 | 2020-10-02 | 南京理工大学 | Self-supporting homogeneous forward osmosis membrane capable of eliminating internal concentration polarization and preparation method and application thereof |
| CN108654378A (en) * | 2018-03-23 | 2018-10-16 | 南京理工大学 | The homogeneous forward osmosis membrane of self-supporting and its preparation method and application of interior concentration polarization can be eliminated |
| CN109499397A (en) * | 2018-12-13 | 2019-03-22 | 天津工业大学 | A kind of modified Nano composite membrane and its preparation method and application |
| CN110141978A (en) * | 2019-03-06 | 2019-08-20 | 中国海洋大学 | A kind of ultra-thin composite membrane and preparation method thereof |
| WO2020177274A1 (en) * | 2019-03-06 | 2020-09-10 | 中国海洋大学 | Composite membrane, preparation method therefor and application thereof |
| CN110141978B (en) * | 2019-03-06 | 2023-09-29 | 中国海洋大学 | Ultrathin composite film and preparation method thereof |
| CN113777087A (en) * | 2021-07-23 | 2021-12-10 | 华南农业大学 | Ratiometric fluorescence analysis method for detecting nitrite |
| CN113777087B (en) * | 2021-07-23 | 2022-07-01 | 华南农业大学 | Ratiometric fluorescence analysis method for detecting nitrite |
| CN115400607A (en) * | 2022-06-16 | 2022-11-29 | 天津大学 | High-performance nanofiltration membrane and preparation method thereof |
| CN115400607B (en) * | 2022-06-16 | 2024-01-02 | 天津大学 | High-performance nanofiltration membrane and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105413464A (en) | Preparation method for graphene quantum dot added forward osmosis membrane, prepared forward osmosis membrane and application thereof | |
| Niksefat et al. | The effect of SiO2 nanoparticles on morphology and performance of thin film composite membranes for forward osmosis application | |
| CN107349787B (en) | Preparation method of forward osmosis membrane added with aminated graphene quantum dots, prepared forward osmosis membrane and application of forward osmosis membrane | |
| CN103432913B (en) | High temperature resistant pair of positive osmosis composite membrane of cortex and preparation method thereof | |
| CN104028120B (en) | Sodium carboxymethylcellulose compound fills the preparation method of polyamide nanofiltration membrane | |
| CN102120149B (en) | Method for preparing acid-proof polysulfonamide nanofiltration composite film | |
| CN108905624A (en) | A kind of polyester-polyamide both sexes charge recombination nanofiltration membrane and preparation method thereof | |
| CN104258743A (en) | High-performance composite nanofiltration membrane with resistance to oxidation of organic solvent and chlorine, as well as preparation method and application of membrane | |
| WO2012102678A1 (en) | A forward osmosis membrane | |
| CN107029558A (en) | A kind of chlorine resistance composite nanometer filtering film and preparation method thereof | |
| CN105771696A (en) | Grapheme oxide quantum dot function sphere nanoparticle, polyamide reverse osmosis membrane/nanofiltration membrane modified by nanoparticle and preparation method | |
| CN108187511B (en) | High-flux high-rejection-rate polyamide composite reverse osmosis membrane and preparation method thereof | |
| Inada et al. | Development of thermoresponsive star oligomers with a glycerol backbone as the draw solute in forward osmosis process | |
| Wang et al. | Preparation and properties of polyamide/titania composite nanofiltration membrane by interfacial polymerization | |
| CN104028126B (en) | The preparation method of sulfonic acid type polyampholyte nano particle hybridization polyamide nanofiltration membrane | |
| CN110605035A (en) | High-flux polyamide nanofiltration or reverse osmosis composite membrane and preparation thereof | |
| Sreedhar et al. | An odyssey of process and engineering trends in forward osmosis | |
| CN112210081B (en) | Sulfonated graphene oxide loaded metal organic framework modified forward osmosis nano composite membrane and preparation method thereof | |
| CN108159891A (en) | A kind of N- sulfenamides based polyamide water softens loose reverse osmosis composite membrane and preparation method thereof | |
| CN104028117A (en) | Preparation method of amphoteric polyelectrolyte complex surface-modified polyamide reverse osmosis membrane | |
| CN110801738B (en) | Preparation method of high-dispersion titanium dioxide doped polyamide nanofiltration membrane | |
| CN109046025A (en) | Selective Separation micro-content organism and the nanofiltration membrane of calcium ions and magnesium ions and preparation method thereof | |
| CN104028118A (en) | Preparation method of polyamide reverse osmosis membrane containing amphoteric carboxymethylcellulose sodium complex | |
| CN106076129B (en) | A kind of preparation method of polyamide nanofiltration membrane | |
| CN115055061A (en) | Preparation method of polyamide composite nanofiltration membrane with high osmotic selectivity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160323 |