WO2004016550A2 - Procede d'ouverture de nanotubes de carbone a leurs extremite et applications - Google Patents
Procede d'ouverture de nanotubes de carbone a leurs extremite et applications Download PDFInfo
- Publication number
- WO2004016550A2 WO2004016550A2 PCT/FR2003/002499 FR0302499W WO2004016550A2 WO 2004016550 A2 WO2004016550 A2 WO 2004016550A2 FR 0302499 W FR0302499 W FR 0302499W WO 2004016550 A2 WO2004016550 A2 WO 2004016550A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carbon nanotubes
- nanotubes
- oxidation
- opening
- carbon
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/168—After-treatment
- C01B32/178—Opening; Filling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/06—Multi-walled nanotubes
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B2202/00—Structure or properties of carbon nanotubes
- C01B2202/20—Nanotubes characterized by their properties
- C01B2202/36—Diameter
Definitions
- the present invention relates generally to the post-treatment of carbon nanotubes and their applications.
- the present invention relates to a process for opening carbon nanotubes at their ends and more especially multi-wall carbon nanotubes.
- hollow carbon nanotubes can prove to be excellent reservoirs of gases, such as hydrogen, natural gas ... It is now well known that the presence of topological defects is necessary to close the graphene planes at the ends of carbon nanotubes. According to Euler's law, six pentagons are necessary to ensure the closure of the carbon nanotubes at each end. These regions of tension are of course the most useful sites for addition reactions, in particular on the double bonds connecting a pair of pentagons.
- Oxidation in air or in oxygen is not selective enough. These treatments lead to a significant loss of material and the external graphene planes are often seriously damaged due to the uncontrollable nature of the reaction.
- Oxidation is much more homogeneous when the carbon nanotubes are dispersed in an oxidizing solution.
- carbon nanotubes obtained by decomposition of acetylene at 600 ° C on cobalt particles supported by zeolites often contain carbon impurities and have closed ends. It is then possible to carry out an attack with potassium permanganate both to partially remove these impurities by oxidation and to open part of the ends of the carbon nanotubes.
- the object of the invention is therefore to provide a method making it possible to quickly and efficiently obtain the opening of carbon nanotubes, while preserving their morphology, their quality, and with reduced losses.
- the process for opening carbon nanotubes according to the invention is characterized in that it comprises two oxidation stages, the first in the liquid phase in a concentrated acid, the second in the gas phase.
- the oxidation stage in the liquid phase then makes it possible to directly obtain open nanotubes.
- this has the advantage of making the major part of the residual metallic impurities enclosed at the ends accessible, for example following the syntheses carried out in the presence of catalyst.
- the disordered carbon appearing during the oxidation reaction in the liquid phase is eliminated during the second stage in the gas phase.
- the carbon nanotubes are multi-wall carbon nanotubes.
- the concentrated acid is nitric acid.
- concentrated nitric acid is used in excess.
- this oxidation step is carried out at reflux, with stirring.
- the reflux heating will last from 30 to 50 minutes, in particular approximately 35 minutes.
- an additional step of gas phase oxidation is carried out at low temperature.
- a particular implementation of this step consists of a treatment of approximately 1 to 2 hours, in particular under C0 2 to 500 to 600 ° C, in particular from 500 to 550 ° C and in particular from 525 ° C, to 1 at 1:40 min.
- the method according to the invention will be implemented with a linear speed of said carbon dioxide of 40 to 100 cm / min, in particular from 50 to 70 cm / min, in particular of the order of 60 cm / min .
- the method according to the invention comprises, between said first step of oxidation in the liquid phase and said second step of oxidation in the gas phase, an intermediate step of filtration and washing of the open nanotubes, in particular with distilled water.
- the method according to the invention may include an additional step of treatment with hydrochloric acid in order to eliminate any metal particles, initially trapped in the central channel, and released during the opening of the nanotubes.
- Figure 1 represents an image obtained by scanning electron microscopy (SEM) of carbon nanotubes after an HN0 3 + C0 2 treatment according to the invention
- - Figure 2 represents a picture obtained by transmission electron microscopy (TEM) of nanotubes carbon after HN0 3 + C0 2 treatment according to the invention
- FIG. 3 represents a MET radiograph (mode of network fringes C0 2 ) of an open end of a carbon nanotube after a treatment according to the method of the invention
- FIG. 4 represents isothermal adsorption-desorption of nitrogen at 77K of the carbon nanotubes before (solid extract curve) and after implementation of the process according to the invention (dashed curve).
- the process of the invention has been optimized on multi-wall carbon nanotubes synthesized by decomposition of acetylene at 600 ° C. on solid solutions of Co x Mg ( ⁇ _ x) 0.
- the carbon nanotubes are dispersed in concentrated nitric acid and oxidized at reflux (130 ° C) for 35 minutes with continuous stirring (1 g of nanotubes in 1 liter of 69% acid by weight). Then, the mixture is filtered, then the solid is washed with distilled water until a neutral pH of the filtrate is obtained.
- This first oxidation step allows the opening of the tubes.
- a gentle oxidation is then carried out using a CO 2 current at low temperature.
- the carbon nanotubes powder is placed in a quartz crucible equipped with a porous sintered glass disk allowing an upward flow of C0 2 to be introduced , at a linear speed of 60 cm / min, at 525 ° C .
- the reaction is carried out for about 60 to 100 min. Selective oxidation of the disordered carbon nanostructures which are produced during the first oxidation reaction is obtained.
- the porous texture of carbon nanotubes is characterized by the adsorption of nitrogen at 77 ° K (Micrometrics, ASAP 2000). Before the adsorption experiments, the samples are degassed at 350 ° C (10 ⁇ 6 bar) for 12 h.
- Another heat treatment can be carried out at high temperature, at 1600-2800 ° C, for several hours, under nitrogen, to graphitize the aromatic layers of the walls and allow the sublimation of metallic Co.
- the carbon nanotubes used have a strong entanglement.
- the nitrogen adsorption isotherm at 77K is type IV, characteristic of a swelling mesoporous solid
- the above method is applied to nanotubes having outside diameters of approximately 7 to 25 mm, but can be applied to nanotubes of larger diameters by adjusting the treatment time with nitric acid and C0 2 .
- This process can of course be used with carbon nanotubes other than those obtained by catalytic processes.
- the opening of carbon nanotubes with a very high crystallinity, in particular those which are synthesized by vaporization of graphite, will require longer reaction times.
- the method according to the invention will then be effective in the context of the opening of carbon nanotubes. More particularly, the method according to the invention will be applied to the opening of multi-wall carbon nanotubes.
- the method according to the invention will be applied to multi-wall carbon nanotubes having an outside diameter of between 7 and 25 nm.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003274239A AU2003274239A1 (en) | 2002-08-08 | 2003-08-08 | Method for opening carbon nanotubes at the ends thereof and implementation |
| CA002495094A CA2495094A1 (fr) | 2002-08-08 | 2003-08-08 | Procede d'ouverture de nanotubes de carbone a leurs extremite et applications |
| JP2004528596A JP2005535550A (ja) | 2002-08-08 | 2003-08-08 | カーボンナノチューブ先端の開口方法と用途 |
| EP03758222A EP1527014A2 (fr) | 2002-08-08 | 2003-08-08 | Procede d'ouverture de nanotubes de carbone a leurs extremites et applications |
| US10/523,397 US20050163697A1 (en) | 2002-08-08 | 2003-08-08 | Method for opening carbon nanotubes at the ends thereof and implementation |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0210115 | 2002-08-08 | ||
| FR0210115A FR2843382B1 (fr) | 2002-08-08 | 2002-08-08 | Procede d'ouverture de nanotubes de carbone a leurs extremites et applications |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2004016550A2 true WO2004016550A2 (fr) | 2004-02-26 |
| WO2004016550A3 WO2004016550A3 (fr) | 2004-04-08 |
Family
ID=30471027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2003/002499 Ceased WO2004016550A2 (fr) | 2002-08-08 | 2003-08-08 | Procede d'ouverture de nanotubes de carbone a leurs extremite et applications |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20050163697A1 (fr) |
| EP (1) | EP1527014A2 (fr) |
| JP (1) | JP2005535550A (fr) |
| AU (1) | AU2003274239A1 (fr) |
| CA (1) | CA2495094A1 (fr) |
| FR (1) | FR2843382B1 (fr) |
| WO (1) | WO2004016550A2 (fr) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7488875B2 (en) * | 2003-12-09 | 2009-02-10 | Unidym, Inc. | Process for purifying carbon nanotubes made on refractory oxide supports |
| FR2898139B1 (fr) * | 2006-03-06 | 2008-05-30 | Nanoledge Sa | Procede de fabrication de produits extrudes composites polymeres et nanotubes de carbone |
| US8110170B2 (en) * | 2006-09-22 | 2012-02-07 | Snu R&Db Foundation | Conductive polymer-carbon nanotube composite and manufacturing method thereof |
| ES2390099T3 (es) * | 2007-05-11 | 2012-11-06 | Grupo Antolín-Ingeniería, S.A. | Nanofibras de carbono y procedimiento para obtener dichas nanofibras |
| CN104192818A (zh) * | 2008-12-30 | 2014-12-10 | 独立行政法人产业技术综合研究所 | 取向单层碳纳米管集合体、块状取向单层碳纳米管集合体、粉体状取向单层碳纳米管集合体、及其制造方法 |
| JP5605431B2 (ja) * | 2010-08-05 | 2014-10-15 | 独立行政法人産業技術総合研究所 | Cnt集合体及び積層体 |
| JP6354583B2 (ja) | 2013-02-28 | 2018-07-11 | 東レ株式会社 | カーボンナノチューブ集合体の製造方法 |
| CN110071261A (zh) | 2018-01-23 | 2019-07-30 | 清华大学 | 电池电极的制备方法 |
| CN110065937B (zh) * | 2018-01-23 | 2021-12-21 | 清华大学 | 氧化多壁碳纳米管的方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5346683A (en) * | 1993-03-26 | 1994-09-13 | Gas Research Institute | Uncapped and thinned carbon nanotubes and process |
| JP2595903B2 (ja) * | 1994-07-05 | 1997-04-02 | 日本電気株式会社 | 液相におけるカーボン・ナノチューブの精製・開口方法および官能基の導入方法 |
| GB9418937D0 (en) * | 1994-09-20 | 1994-11-09 | Isis Innovation | Opening and filling carbon nanotubes |
| WO1998005920A1 (fr) * | 1996-08-08 | 1998-02-12 | William Marsh Rice University | Dispositifs a nano-echelle, maniables de façon macroscopique et realises a partir d'ensembles nanotubes |
| JPH10125321A (ja) * | 1996-10-18 | 1998-05-15 | Sony Corp | 電池負極用炭素質材料及び非水電解液二次電池 |
| JP2002515847A (ja) * | 1997-05-29 | 2002-05-28 | ウィリアム・マーシュ・ライス・ユニバーシティ | 単層カーボンナノチューブ類から形成された炭素繊維類 |
| AU6078700A (en) * | 1999-07-21 | 2001-02-13 | Hyperion Catalysis International, Inc. | Methods of oxidizing multiwalled carbon nanotubes |
| JP2002097010A (ja) * | 2000-09-20 | 2002-04-02 | Japan Science & Technology Corp | ハイブリッド単層カーボンナノチューブの作製方法 |
| JP2002097008A (ja) * | 2000-09-20 | 2002-04-02 | Japan Science & Technology Corp | 単層カーボンナノチューブの開孔方法 |
| AU2002307283A1 (en) * | 2001-04-12 | 2002-10-28 | Honda Giken Kogyo Kabushiki Kaisha | Purification of carbon filaments and their use in storing hydrogen |
-
2002
- 2002-08-08 FR FR0210115A patent/FR2843382B1/fr not_active Expired - Fee Related
-
2003
- 2003-08-08 US US10/523,397 patent/US20050163697A1/en not_active Abandoned
- 2003-08-08 EP EP03758222A patent/EP1527014A2/fr not_active Withdrawn
- 2003-08-08 JP JP2004528596A patent/JP2005535550A/ja active Pending
- 2003-08-08 WO PCT/FR2003/002499 patent/WO2004016550A2/fr not_active Ceased
- 2003-08-08 AU AU2003274239A patent/AU2003274239A1/en not_active Abandoned
- 2003-08-08 CA CA002495094A patent/CA2495094A1/fr not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| FR2843382B1 (fr) | 2005-12-23 |
| CA2495094A1 (fr) | 2004-02-26 |
| FR2843382A1 (fr) | 2004-02-13 |
| AU2003274239A1 (en) | 2004-03-03 |
| WO2004016550A3 (fr) | 2004-04-08 |
| EP1527014A2 (fr) | 2005-05-04 |
| US20050163697A1 (en) | 2005-07-28 |
| JP2005535550A (ja) | 2005-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101147259B1 (ko) | 탄소나노튜브의 연속적인 정제 방법 및 장치 | |
| Hsin et al. | Production and in‐situ metal filling of carbon nanotubes in water | |
| JP5228323B2 (ja) | 単層カーボンナノチューブの製造方法 | |
| EP2105407B1 (fr) | Procédés continus et appareil de fonctionnalisation de nanotube en carbone | |
| US7494639B2 (en) | Purification of carbon nanotubes based on the chemistry of fenton's reagent | |
| CN101987729B (zh) | 一种用含硫化合物还原制备石墨烯的方法 | |
| Zhang et al. | Nondestructive covalent functionalization of carbon nanotubes by selective oxidation of the original defects with K2FeO4 | |
| JP4035619B2 (ja) | Cnt表面改質方法 | |
| KR20030059128A (ko) | 관능화된 짧은 탄소 나노튜브를 생산하는 방법 및 상기방법에 의해서 얻어질 수 있는 관능화된 짧은 탄소나노튜브 | |
| JP2009286687A (ja) | 炭素ナノチューブの連続的な表面処理方法及び装置 | |
| WO2005089422A2 (fr) | Procedes de purification de matieres carbonees | |
| WO2004016550A2 (fr) | Procede d'ouverture de nanotubes de carbone a leurs extremite et applications | |
| CN107792846A (zh) | 碳纳米管的纯化方法 | |
| US20150225243A1 (en) | Process for purification of carbon nanotubes | |
| El-Sharkawy et al. | Multi-walled carbon nanotubes decorated with Cu (II) triazole Schiff base complex for adsorptive removal of synthetic dyes | |
| Pillai et al. | Purification of single-walled carbon nanotubes | |
| Mahalingam et al. | Chemical methods for purification of carbon nanotubes-A Review | |
| JP2003206117A (ja) | 多層カーボンナノチューブの大量生産方法 | |
| Shankar et al. | A fresh perspective to synthesizing and designing carbon/sulfur composite cathodes using supercritical CO2 technology for advanced Li-S battery cathodes | |
| FR2966815A1 (fr) | Methode de purification de nanotubes de carbone | |
| JP2004290793A (ja) | 水素吸蔵材料、水素吸蔵体、水素貯蔵装置、燃料電池車両、及び水素吸蔵材料の製造方法 | |
| CN111644203A (zh) | 一种金属卟啉功能化的石墨烯量子点/氮化硼复合光催化材料在光解水制氢中的应用 | |
| García-Betancourt et al. | Holey nitrogen-doped multiwalled carbon nanotubes from extended air oxidation at low-temperature | |
| KR20120139034A (ko) | 그래핀 옥사이드의 층간 제어방법 및 이에 의해 처리된 수소저장용 그래핀 옥사이드 복합체 | |
| CN117776163A (zh) | 一种单壁碳纳米管的纯化方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 2003758222 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 2495094 Country of ref document: CA |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2004528596 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 10523397 Country of ref document: US |
|
| WWP | Wipo information: published in national office |
Ref document number: 2003758222 Country of ref document: EP |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 2003758222 Country of ref document: EP |