CN105399086A - Method for preparing graphene porous membrane under assistance of sodium chloride - Google Patents
Method for preparing graphene porous membrane under assistance of sodium chloride Download PDFInfo
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- CN105399086A CN105399086A CN201510890613.1A CN201510890613A CN105399086A CN 105399086 A CN105399086 A CN 105399086A CN 201510890613 A CN201510890613 A CN 201510890613A CN 105399086 A CN105399086 A CN 105399086A
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Abstract
The invention discloses a method for preparing a graphene porous membrane under assistance of sodium chloride. The method comprises the steps of first dissolving sodium chloride solid and graphene oxide solid in deionized water and transferring the deionized water into a cell smashing instrument to perform dispersion; forming mixed liquid, injecting the mixed liquid into a polytetrafluoroethylene die, performing primary drying for 2-4 h at room temperature, and then placing the mixed liquid in an oven to dry the mixed liquid at 30-70 DEG C to form a film; and finally placing the film in an oven at 130-190 DEG C to perform high-temperature annealing. The prepared porous membrane is provided with holes with submicron to subcentimeter sizes. The method is low in manufacturing cost, simple, quick, non-toxic and harmless, and accordingly the method has good application prospect in preparation of graphene porous membranes.
Description
Technical field
The present invention relates to a kind of sodium-chlor assists graphene film to form hole.
Background technology
Graphene porous-film has very large application potential as a kind of type material in gas delivery, Water warfare etc.The method that tradition prepares Graphene porous material has freeze-drying and hydrazine hydrate reduction method, but their intrinsic shortcomings limit its scale operation and application.Freeze-drying is with high costs, prepares required time long; And hydrazine hydrate reduction method reductive agent hydrazine hydrate used is hypertoxic drug, be difficult to extensive use.The method that the present invention adopts, cost of manufacture is lower, simple and fast, nontoxic, and this makes it in the preparation of Graphene porous-film, have good application prospect.
Summary of the invention:
Technical problem: the object of this invention is to provide a kind of method preparing Graphene porous-film.The Graphene porous-film that the present invention proposes defines a large amount of micropore, and can filter out most of particle in water, and cost of manufacture is lower, method is simple and easy.
Summary of the invention: for solving the problems of the technologies described above, the invention provides a kind of sodium-chlor and assist the method preparing Graphene porous-film, comprising the steps: first solid sodium chloride and graphene oxide solid to be dissolved in deionized water and being transferred in cell pulverization instrument of the method disperses, and forms mixed solution; Above-mentioned mixed solution is injected the mould of tetrafluoroethylene, at room temperature preliminarily dried 2 ~ 4 hours, puts into baking oven 30 ~ 70 DEG C of drying and forming-films afterwards again; Finally put into 130 ~ 190 DEG C of baking oven high temperature annealings.
Preferably, the concentration range of sodium-chlor is at 50 μ g/mL ~ 180mg/mL.
Preferably, the concentration range of graphene oxide is at 10 μ g/mL ~ 20mg/mL.
Beneficial effect: the advantage that the present invention has and positively effect are:
The method that tradition prepares Graphene porous-film has freeze-drying and hydrazine hydrate reduction method, but their intrinsic shortcomings limit its scale operation and application.Freeze-drying is with high costs, prepares required time long; And hydrazine hydrate reduction method reductive agent hydrazine hydrate used is hypertoxic drug, be difficult to extensive use.By comparison, cost of manufacture is lower, simple and fast, nontoxic, and this makes it in the preparation of Graphene porous-film, have good application prospect for the method that the present invention adopts.In addition, traditional method is difficult to prepare large size as the hole of sub-centimetre, and the present invention by the thermal expansion effects of gas, can obtain required macropore.
Accompanying drawing explanation
Fig. 1 does not have sodium-chlor auxiliary block post to obtain the photo of graphene film.
Fig. 2 assists the photo of lower gained graphene film at sodium-chlor, clearly, has heaved a lot of bubble.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
The present invention discloses a kind of method preparing Graphene porous-film and comprises the following steps: first solid sodium chloride and graphene oxide solid to be dissolved in deionized water and to be transferred in cell pulverization instrument and disperse; Form mixed solution, more above-mentioned mixed solution is injected the mould of tetrafluoroethylene, at room temperature preliminarily dried 2 ~ 4 hours, puts into baking oven 30 ~ 70 DEG C of drying and forming-films afterwards; Finally put into 130 ~ 190 DEG C of baking oven high temperature annealings.
The concentration range of sodium-chlor is at 50 μ g/mL ~ 180mg/mL.
The concentration range of graphene oxide is at 10 μ g/mL ~ 20mg/mL.
Pore-forming principle: be first that sodium-chlor starts crystallization, and these crystal grains will strut certain hole along with moisture evaporation; Second step is also a crucial step, is exactly in the aperture that struts of the first step, will has some gases, and then in the event of high temperatures, gas expansion can occur, thus obtain millimeter or even other hole of inferior centimeter order.
Below by embodiment, the present invention is further described in detail.
Embodiment 1:
The first step, solid sodium chloride and graphene oxide solid to be dissolved in deionized water and to be transferred in cell pulverization instrument and disperse, in the mixed solution of formation, the concentration of sodium-chlor is 50 μ g/mL, and the concentration range of graphene oxide is 1mg/mL.
Second step, above-mentioned mixed solution is injected the mould of tetrafluoroethylene, at room temperature preliminarily dried 2 hours, puts into baking oven 70 DEG C of dryings afterwards;
3rd step, puts into baking oven by the product in second step, 130 DEG C of high temperature annealing 2h.
Fig. 1 is the photo not adding sodium-chlor gained film, and clearly surface is comparatively smooth, does not have bubbling; And Fig. 2 is the situation adding sodium-chlor, surface irregularity, and obviously can see on face it being the bubble heaved everywhere, size all at millimeter to a centimetre rank.
Embodiment 2:
The first step, solid sodium chloride and graphene oxide solid to be dissolved in deionized water and to be transferred in cell pulverization instrument and disperse, in the mixed solution of formation, the concentration of sodium-chlor is 1mg/mL, and the concentration range of graphene oxide is 20mg/mL.
Second step, above-mentioned mixed solution is injected the mould of tetrafluoroethylene, at room temperature preliminarily dried 3 hours, puts into baking oven 60 DEG C of dryings afterwards;
3rd step, puts into baking oven by the product in second step, 150 DEG C of reacting by heating.Acquired results is similar to Fig. 2.
Embodiment 3:
The first step, solid sodium chloride and graphene oxide solid to be dissolved in deionized water and to be transferred in cell pulverization instrument and disperse, in the mixed solution of formation, the concentration of sodium-chlor is 180mg/mL, and the concentration range of graphene oxide is 10 μ g/mL.
Second step, above-mentioned mixed solution is injected the mould of tetrafluoroethylene, at room temperature preliminarily dried 4 hours, puts into baking oven 30 DEG C of dryings afterwards;
3rd step, puts into baking oven by the product in second step, 180 DEG C of reacting by heating.Acquired results is similar to Fig. 2.
Described is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, and these improvement also should be considered as protection scope of the present invention.
Claims (3)
1. sodium-chlor assists the method preparing Graphene porous-film, it is characterized in that, comprising the steps: first solid sodium chloride and graphene oxide solid to be dissolved in deionized water and being transferred in cell pulverization instrument of the method disperses, and forms mixed solution; Above-mentioned mixed solution is injected the mould of tetrafluoroethylene, at room temperature preliminarily dried 2 ~ 4 hours, puts into baking oven 30 ~ 70 DEG C of drying and forming-films afterwards again; Finally put into 130 ~ 190 DEG C of baking oven high temperature annealings.
2. sodium-chlor according to claim 1 assists the method preparing Graphene porous-film, it is characterized in that, the concentration range of sodium-chlor is at 50 μ g/mL ~ 180mg/mL.
3. sodium-chlor according to claim 1 assists the method preparing Graphene porous-film, it is characterized in that, the concentration range of graphene oxide is at 10 μ g/mL ~ 20mg/mL.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510890613.1A CN105399086B (en) | 2015-12-07 | 2015-12-07 | A kind of method that sodium chloride auxiliary prepares graphene perforated membrane |
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| CN201510890613.1A CN105399086B (en) | 2015-12-07 | 2015-12-07 | A kind of method that sodium chloride auxiliary prepares graphene perforated membrane |
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| CN105399086A true CN105399086A (en) | 2016-03-16 |
| CN105399086B CN105399086B (en) | 2017-11-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106276873A (en) * | 2016-08-08 | 2017-01-04 | 中国科学院上海微***与信息技术研究所 | A kind of method preparing germanio grapheme nano-pore |
| CN110759335A (en) * | 2019-12-10 | 2020-02-07 | 齐鲁工业大学 | Porous graphene electrode and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012057702A1 (en) * | 2010-10-28 | 2012-05-03 | Nanyang Technological University | Method of preparing a porous graphene film |
| CN104874301A (en) * | 2014-02-28 | 2015-09-02 | 中国科学院上海高等研究院 | Graphene oxide film, preparation method and applications thereof |
| CN105018041A (en) * | 2015-06-11 | 2015-11-04 | 贵州新碳高科有限责任公司 | Porous graphene film, and phase-changing energy-storing composite material |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012057702A1 (en) * | 2010-10-28 | 2012-05-03 | Nanyang Technological University | Method of preparing a porous graphene film |
| CN104874301A (en) * | 2014-02-28 | 2015-09-02 | 中国科学院上海高等研究院 | Graphene oxide film, preparation method and applications thereof |
| CN105018041A (en) * | 2015-06-11 | 2015-11-04 | 贵州新碳高科有限责任公司 | Porous graphene film, and phase-changing energy-storing composite material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106276873A (en) * | 2016-08-08 | 2017-01-04 | 中国科学院上海微***与信息技术研究所 | A kind of method preparing germanio grapheme nano-pore |
| CN106276873B (en) * | 2016-08-08 | 2019-01-25 | 中国科学院上海微***与信息技术研究所 | A method of preparing germanium base grapheme nano-pore |
| CN110759335A (en) * | 2019-12-10 | 2020-02-07 | 齐鲁工业大学 | Porous graphene electrode and preparation method thereof |
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