CN103316597A - Carbon-nanotube hollow fiber membrane - Google Patents
Carbon-nanotube hollow fiber membrane Download PDFInfo
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- CN103316597A CN103316597A CN201310275543XA CN201310275543A CN103316597A CN 103316597 A CN103316597 A CN 103316597A CN 201310275543X A CN201310275543X A CN 201310275543XA CN 201310275543 A CN201310275543 A CN 201310275543A CN 103316597 A CN103316597 A CN 103316597A
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Abstract
The invention belongs to the technical field of membranes, and particularly relates to a carbon-nanotube hollow fiber membrane. The carbon-nanotube hollow fiber membrane is characterized in that related hollow fiber membrane is completely composed of carbon nanotubes; the related hollow fiber membrane is in a controllable shape; the related hollow fiber membrane is controllable in diameter, thickness, tube body composition, and number of inner cores. The carbon-nanotube hollow fiber membrane has the advantages that the related hollow fiber membrane is ultra-strong in chemical inertness, definite in bacteriostasis capability, good in hydrophilicity, good in electrical conductivity, high in porosity, high in flux, high in selectivity and high in adsorption capacity.
Description
Technical field
The present invention relates to a kind of CNT hollow-fibre membrane, belong to the membrane technology field.
Background technology
As a novel efficient separation, concentrated, purification and purification techniques, the membrane separation technique development has become 21 century tool development prospect and the mainstream technology of material impact power rapidly.Because film separation process cleanliness without any pollution, without phase-state change, low energy consumption, simple operation and other advantages and in food processing, chemical synthesis, medicine is purified, biological extract and be used widely in the field such as environment remediation.But present diffusion barrier often exists at the bottom of the flux, the shortcoming that separating property is poor, and the film that also has subjects to acid, alkali, microbiologic(al) corrosion and film and pollutes.For example, organic film is because its chemical stability and poor heat stability and can only move under the environment of gentleness.The ceramic membrane that develops out in order to overcome these shortcomings can move under exacting terms, such as high temperature, strong acid, highly basic, there is organic solvent etc.Carbonization organic matter and the carbon diffusion barrier that obtains can overcome the shortcoming of organic film poor stability equally.But no matter ceramic membrane or carbonized film are owing to its low porosity, high hydrophobicity cause flux very low.Recently, the people such as Haiwei Liang are at Adv.Mater.2010,22, the article that 4691 – 4695 deliver " carbonaceous nano wire film be used for selective filter and separating nano-particles " (Carbonaceous Nanofiber Membranes for Selective Filtration and Separation of Nanoparticles) reported when pressure reduction is 80kPa, and its flux is 10 times of commercialization film of same molecular interception.Analyze according to the author, cause high-throughout reason, thereby mainly be because monodimension nanometer material twines the superelevation porosity that forms mutually.
Be not difficult to draw, this carbon film that is comprised of one-dimensional material has plurality of advantages, high porosity for example, and high flux, high chemical stability has wide development potentiality.Yet, still there are some outstanding problems, be mainly manifested in: the one, this film mostly is the paper shape, and structure is single; The 2nd,, this kind film is essential supporter in running, and this is just to the simplification of membrane module, and miniaturization is intensive very unfavorable.These deficiencies are all restricting the development of one dimension material with carbon element film.
Summary of the invention
The present invention mainly is the small throughput that exists for present diffusion barrier, low chemical stability, and structure is single to wait deficiency, and a kind of CNT hollow-fibre membrane is provided.
For achieving the above object, technical scheme provided by the invention is:
A kind of CNT hollow-fibre membrane, this hollow-fibre membrane all is comprised of CNT.Described hollow-fibre membrane has controlled linear structure, and hollow-fibre membrane has controlled external diameter, thickness, film body composition and inner core number.
Described CNT is that a kind of or any combination in SWCN, double-walled carbon nano-tube, the multi-walled carbon nano-tubes is used, described film body consists of only has SWCN to form, or only have double-walled carbon nano-tube to form, or only have multi-walled carbon nano-tubes to form, or single wall, double-walled, multi-walled carbon nano-tubes both form arbitrarily, or single wall, double-walled, multi-walled carbon nano-tubes three form.
Described multi-walled carbon nano-tubes external diameter can be 3～100nm.
Described film external diameter can be 100～1500 μ m.
Described thickness can be 10～500 μ m.
Described inner core number can be 1～100.
Film of the present invention, agent structure is attractive in appearance, well-balanced, has superpower chemical inertness, certain bacteriostasis, good hydrophily, good electric conductivity, superelevation porosity, high flux, high selectivity, high-adsorption-capacity.
Description of drawings
The present invention is provided with 5 width of cloth accompanying drawings altogether, but accompanying drawing described herein is used to provide a further understanding of the present invention, consists of a part of the present invention, and signal type embodiment of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention, now be respectively described below:
Fig. 1 is the ESEM picture of 1 helical form SWCN hollow-fibre membrane.
Fig. 2 is the ESEM picture of 1 snakelike multi-walled carbon nano-tubes hollow-fibre membrane.
Fig. 3 is the ESEM picture of 1 zigzag single wall/many wall mixing CNT hollow-fibre membranes.
Fig. 4 is 1 ESEM picture with multi-walled carbon nano-tubes hollow-fibre membrane of 3 inner cores.
Fig. 5 is the ESEM picture that amplify single wall among Fig. 3/many wall mixing nanotube hollow-fibre membranes side.
All ESEM picture in the accompanying drawing of the present invention is to adopt Hitachi S-4800 type ESEM, at accelerating potential is to take under the condition of 10kV.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described, but the present invention not only is confined to following examples.
Embodiment 1: as shown in Figure 1, the present embodiment SWCN is the film material of main part, film external diameter 180 μ m, and thickness 20 μ m, and be moulded spirality.
Embodiment 2: as shown in Figure 2, the present embodiment overall diameter is that the multi-walled carbon nano-tubes of 60～100 μ m is the film material of main part, film external diameter 500 μ m, and thickness 100 μ m, and be moulded spirality.
Embodiment 3: as shown in Figure 3, the present embodiment is that the multi-walled carbon nano-tubes of 60～100 μ m is the film material of main part with SWCN and overall diameter, and is moulded zigzag.
Embodiment 4: as shown in Figure 4, the present embodiment overall diameter is that the multi-walled carbon nano-tubes of 60～100 μ m is the film material of main part, and film has 3 inner cores.
Claims (9)
1. CNT hollow-fibre membrane, it is characterized in that: this hollow-fibre membrane all is comprised of CNT, and the hollow-fibre membrane that relates to has controlled linear; Described hollow-fibre membrane has controlled external diameter, thickness, body composition and inner core number.
2. a kind of CNT hollow-fibre membrane according to claim 1 is characterized in that, described CNT is that a kind of or any combination in SWCN, double-walled carbon nano-tube, the multi-walled carbon nano-tubes is used.
3. a kind of CNT hollow-fibre membrane according to claim 2 is characterized in that, described multi-walled carbon nano-tubes external diameter is 3～100nm.
4. according to claim 1,2 or 3 described a kind of CNT hollow-fibre membranes, it is characterized in that, described external diameter is 100～1500 μ m.
5. according to claim 1,2 or 3 described a kind of CNT hollow-fibre membranes, it is characterized in that, described thickness is 10～500 μ m.
6. a kind of CNT hollow-fibre membrane according to claim 4 is characterized in that, described thickness is 10～500 μ m.
7. according to claim 1,2,3 or 6 described a kind of CNT hollow-fibre membranes, it is characterized in that, described inner core number is 1～100.
8. a kind of CNT hollow-fibre membrane according to claim 4 is characterized in that, described inner core number is 1～100.
9. a kind of CNT hollow-fibre membrane according to claim 5 is characterized in that, described inner core number is 1～100.
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| CN201310275543XA CN103316597A (en) | 2013-07-01 | 2013-07-01 | Carbon-nanotube hollow fiber membrane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015131436A1 (en) * | 2014-03-05 | 2015-09-11 | 大连理工大学 | Method for preparing carbon nanotube hollow fiber membrane on large scale |
| WO2016119692A1 (en) * | 2015-01-27 | 2016-08-04 | 昆明纳太科技有限公司 | Conductive filter membrane, preparation method and use thereof |
Citations (5)
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| WO2006137893A2 (en) * | 2004-10-01 | 2006-12-28 | Board Of Regents Of The University Of Texas System | Polymer-free carbon nanotube assemblies (fibers, ropes, ribbons, films) |
| CN101691280A (en) * | 2009-10-30 | 2010-04-07 | 上海交通大学 | Method for preparing carbon nano tube film |
| CN102091537A (en) * | 2010-12-30 | 2011-06-15 | 天津工业大学 | Anti-microbial contamination hollow fiber membrane and preparation method thereof |
| CN102372251A (en) * | 2010-08-23 | 2012-03-14 | 清华大学 | Carbon nanotube structure and preparation method thereof |
| SE1130061A1 (en) * | 2011-06-15 | 2012-12-16 | Sht Smart High Tech Ab | Template-based manufacture of covalently bonded three-dimensional networks of large hollow carbon nanotubes |
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2013
- 2013-07-01 CN CN201310275543XA patent/CN103316597A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006137893A2 (en) * | 2004-10-01 | 2006-12-28 | Board Of Regents Of The University Of Texas System | Polymer-free carbon nanotube assemblies (fibers, ropes, ribbons, films) |
| CN101691280A (en) * | 2009-10-30 | 2010-04-07 | 上海交通大学 | Method for preparing carbon nano tube film |
| CN102372251A (en) * | 2010-08-23 | 2012-03-14 | 清华大学 | Carbon nanotube structure and preparation method thereof |
| CN102091537A (en) * | 2010-12-30 | 2011-06-15 | 天津工业大学 | Anti-microbial contamination hollow fiber membrane and preparation method thereof |
| SE1130061A1 (en) * | 2011-06-15 | 2012-12-16 | Sht Smart High Tech Ab | Template-based manufacture of covalently bonded three-dimensional networks of large hollow carbon nanotubes |
Non-Patent Citations (1)
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| GUOWEN MENG等: "A General Synthetic Approach to Interconnected Nanowire/Nanotube and Nanotube/Nanowire/Nanotube Heterojunctions with Branched Topology", 《ANGEWANDTE CHEMIE》, vol. 121, 31 December 2009 (2009-12-31), pages 7302 - 7306 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015131436A1 (en) * | 2014-03-05 | 2015-09-11 | 大连理工大学 | Method for preparing carbon nanotube hollow fiber membrane on large scale |
| US10179314B2 (en) | 2014-03-05 | 2019-01-15 | Dalian University Of Technology | Method for the high-throughput preparation of carbon nanotube hollow fiber membranes |
| WO2016119692A1 (en) * | 2015-01-27 | 2016-08-04 | 昆明纳太科技有限公司 | Conductive filter membrane, preparation method and use thereof |
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Application publication date: 20130925 |