CN100455509C - Method for preparing suspension liquid of steady Nano carbon tube by using tannic acid - Google Patents
Method for preparing suspension liquid of steady Nano carbon tube by using tannic acid Download PDFInfo
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- CN100455509C CN100455509C CNB2007100676866A CN200710067686A CN100455509C CN 100455509 C CN100455509 C CN 100455509C CN B2007100676866 A CNB2007100676866 A CN B2007100676866A CN 200710067686 A CN200710067686 A CN 200710067686A CN 100455509 C CN100455509 C CN 100455509C
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Abstract
This invention discloses a method for preparing stable carbon nanotube (CNT) suspension by using tannic acid. The method comprises: (1) affing distilled water into tannic acid to obtain 5-500 mg/L tannic acid aqueous solution; (2) adding CNT (inner diameters less than or equal to 100 nm) to obtain 10-1000 mg/L CNT solution; (3) ultrasonicating in an ultrasonic cleaner for 30-60 min; (4) standing for more than 24 h, transferring the CNT suspension into another container. The dispersant in this invention, tannic acid, is a nontoxic and water-soluble natural product, and has high suspension ability to CNT. The obtained CNT suspension is stable, and the method is suitable for a wide range of conditions.
Description
Technical field
The present invention relates to a kind of method of utilizing Weibull to make stable carbon nanotube suspension.
Background technology
Nanosecond science and technology develop rapidly, will produce wide influence to global social economy.At present, the nano material industrialization is in the ascendant in the whole nation even global range.CNT (carbon nano-tube) is the nano material that a class has the unique physical chemical attribute, and its application in every field has caused various countries scientist and entrepreneur's common concern.But because the relative caliber of length of CNT (carbon nano-tube) is very big, add the Van der Waals force effect, twine easily with agglomerated together between the carbon pipe, be difficult to form uniform and stable suspension, this is a subject matter of restriction CNT (carbon nano-tube) widespread use.
At present, mostly adopt tensio-active agents such as Triton X-100 to make the suspension of CNT (carbon nano-tube) as dispersion agent.But the amount of required tensio-active agent is bigger, generally will reach 1% concentration, and cost is bigger, and some is poisonous, is easy to generate pollution.A kind of simple and effective dispersion agent and dispersing method will promote the industrialized development of CNT (carbon nano-tube).
Weibull claims that again tannin or tannin are the compounds of a class complexity, nontoxic and soluble in water, be present in many plants (as pomegranate, coffee, tealeaves, persimmon etc.), the structure of the Weibull of different sources is variant, but all has the polyphenol hydroxyl structure, have hydrophilic, lipophilic parents' characteristic, certain surfactivity is arranged, be used in the industries such as printing and dyeing, surface treatment.Its hydrophobic end can be by CNT (carbon nano-tube) surface strong adsorption, and the aqueous solution is stretched in its hydrophobic side, thereby can play the effect that disperses with suspended nano carbon pipe.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing Weibull to make stable carbon nanotube suspension.
Comprise the steps:
1) Weibull is added distilled water and be mixed with the aqueous solution that mass concentration is 5～500mg/L;
2) in the above-mentioned Weibull aqueous solution, add the CNT (carbon nano-tube) of internal diameter≤100nm, be mixed with the mixed solution that the CNT (carbon nano-tube) mass concentration is 10～1000mg/L;
3) container that above-mentioned mixed solution will be housed is placed in the ultrasonic cleaning machine ultrasonic 30～60 minutes;
4) mixed solution after the supersound process was left standstill more than 24 hours, then suspension is transferred in another container, stable carbon nanotube suspension.
Advantage of the present invention
1) Weibull of the present invention's use is a class natural product, and is nontoxic and soluble in water, is present in many plants (as pomegranate, coffee, tealeaves, persimmon etc.).
2) Weibull is strong to the suspending power of CNT (carbon nano-tube), the CNT (carbon nano-tube) effect suspension stabilization of making.Relatively use the multiple-wall carbon nanotube (MWCNT of the 200mg/L that Weibull (available from the Alfa Aesar A Johnson Matthey Company of the U.S.) aqueous solution (pH=4) of 100mg/L is mixed with, the MWCNT mixed solution of internal diameter 60～100nm) mixed solutions and the 200mg/L that makes with 1% the Triton X-100 aqueous solution was through ultrasonic 60 minutes and leave standstill 4 suspension situations after round the clock, can find that the suspending power of Weibull significantly is better than TritonX-100.By the content of MWCNT in the further test suspension liquid, find the MWCNT that the Weibull aqueous solution of 100mg/L can stable suspersion 75mg/L, its suspending power is 4 times of 1% the Triton X-100 aqueous solution.
3) the working conditions broad of this method.The Weibull pH value of aqueous solution a wider range that is suitable for, the Weibull aqueous solution of pH value in 4～9 scopes all has the good suspension property energy to MWCNT; The concentration range broad of the Weibull aqueous solution that is suitable for, (the stable suspersion concentration of 60～100nm) mixed solutions is all greater than 50mg/L to the MWCNT of 200mg/L for the Weibull of 5～500mg/L; Caliber a wider range of the MWCNT that is suitable for, in the Weibull aqueous solution (100mg/L) of 40ml, add the 8mg internal diameter and be＜MWCNT of 5 kinds of calibers such as 10nm, 10～20nm, 20～40nm, 40～60nm, 60～100nm, the concentration of MWCNT is 26～142mg/L in the suspension that forms after ultrasonic 60 minutes leave standstill 24 hours, wherein concentration is minimum is that internal diameter is＜MWCNT of 10nm, and the highest is that internal diameter is the MWCNT of 20～40nm.
Embodiment
Embodiment 1
1) Weibull is added distilled water and be mixed with the aqueous solution that mass concentration is 5mg/L;
2) (internal diameter is that 60～100nm) to be mixed with the CNT (carbon nano-tube) mass concentration be the mixed solution of 200mg/L to add CNT (carbon nano-tube) in the above-mentioned Weibull aqueous solution;
3) container that above-mentioned mixed solution will be housed is placed in the ultrasonic cleaning machine ultrasonic 60 minutes;
4) mixed solution after the supersound process was left standstill more than 24 hours, then suspension is transferred in another container, stable carbon nanotube suspension.
Embodiment 2
1) Weibull is added distilled water and be mixed with the aqueous solution that mass concentration is 100mg/L;
2) (internal diameter＜10nm) is mixed with the mixed solution that the CNT (carbon nano-tube) mass concentration is 200mg/L to add CNT (carbon nano-tube) in the above-mentioned Weibull aqueous solution;
3) container that above-mentioned mixed solution will be housed is placed in the ultrasonic cleaning machine ultrasonic 30 minutes;
4) mixed solution after the supersound process was left standstill more than 24 hours, then suspension is transferred in another container, stable carbon nanotube suspension.
Embodiment 3
1) Weibull is added distilled water and be mixed with the aqueous solution that mass concentration is 100mg/L;
2) (internal diameter is that 60～100nm) to be mixed with the CNT (carbon nano-tube) mass concentration be the mixed solution of 10mg/L to add CNT (carbon nano-tube) in the above-mentioned Weibull aqueous solution;
3) container that above-mentioned mixed solution will be housed is placed in the ultrasonic cleaning machine ultrasonic 60 minutes;
4) mixed solution after the supersound process was left standstill more than 24 hours, then suspension is transferred in another container, stable carbon nanotube suspension.
Embodiment 4
1) Weibull is added distilled water and be mixed with the aqueous solution that mass concentration is 100mg/L;
2) (internal diameter is that 60～100nm) to be mixed with the CNT (carbon nano-tube) mass concentration be the mixed solution of 500mg/L to add CNT (carbon nano-tube) in the above-mentioned Weibull aqueous solution;
3) container that above-mentioned mixed solution will be housed is placed in the ultrasonic cleaning machine ultrasonic 60 minutes;
4) mixed solution after the supersound process was left standstill more than 24 hours, then suspension is transferred in another container, stable carbon nanotube suspension.
Embodiment 5
1) Weibull is added distilled water and be mixed with the aqueous solution that mass concentration is 500mg/L;
2) (internal diameter is that 60～100nm) to be mixed with the CNT (carbon nano-tube) mass concentration be the mixed solution of 200mg/L to add CNT (carbon nano-tube) in the above-mentioned Weibull aqueous solution;
3) container that above-mentioned mixed solution will be housed is placed in the ultrasonic cleaning machine ultrasonic 60 minutes;
4) mixed solution after the supersound process was left standstill more than 24 hours, then suspension is transferred in another container, stable carbon nanotube suspension.
Claims (1)
1, a kind of method of utilizing Weibull to make stable carbon nanotube suspension is characterized in that comprising the steps:
1) Weibull is added distilled water and be mixed with the aqueous solution that mass concentration is 5～500mg/L;
2) in the above-mentioned Weibull aqueous solution, add the CNT (carbon nano-tube) of internal diameter≤100nm, be mixed with the CNT (carbon nano-tube) mass concentration and be 10,200 or the mixed solution of 500mg/L;
3) container that above-mentioned mixed solution will be housed is placed in the ultrasonic cleaning machine ultrasonic 30～60 minutes;
4) mixed solution after the supersound process was left standstill more than 24 hours, then suspension is transferred in another container, stable carbon nanotube suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100676866A CN100455509C (en) | 2007-03-29 | 2007-03-29 | Method for preparing suspension liquid of steady Nano carbon tube by using tannic acid |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100676866A CN100455509C (en) | 2007-03-29 | 2007-03-29 | Method for preparing suspension liquid of steady Nano carbon tube by using tannic acid |
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| CN101049925A CN101049925A (en) | 2007-10-10 |
| CN100455509C true CN100455509C (en) | 2009-01-28 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225247B (en) * | 2007-12-27 | 2011-04-06 | 江苏奈特纳米科技有限公司 | Nano material additive |
| CN103803523A (en) * | 2013-11-18 | 2014-05-21 | 广东电网公司电力科学研究院 | Surface modifying and dispersing method of carbon nano-tube |
| CN104946324B (en) * | 2015-05-27 | 2016-08-24 | 曹一婕 | A kind of synthetic method improving water coal slurry stability additive |
| CN109046252B (en) * | 2018-07-20 | 2021-06-18 | 辽宁大学 | Carbon nanotube and gallnut tannin composite material, preparation method thereof and application thereof in gallium recovery |
| CN110128784B (en) * | 2019-04-30 | 2021-11-09 | 中国林业科学研究院林产化学工业研究所 | Preparation method of water-based carbon hybrid material |
| CN113564664A (en) * | 2021-07-29 | 2021-10-29 | 合肥工业大学 | Preparation method of sintered NdFeB magnet surface modified carbon nanotube enhanced organic coating |
| CN113817343A (en) * | 2021-09-27 | 2021-12-21 | 昆明理工大学 | Dispersing method of nano carbon material |
| CN115491070A (en) * | 2022-07-27 | 2022-12-20 | 昆明理工大学 | Preparation method and application of electric-conductive and heat-conductive coating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1643192A (en) * | 2002-01-15 | 2005-07-20 | 毫微动力学股份有限公司 | Compositions of suspended carbon nanotubes, methods of making the same, and uses thereof |
| CN1697146A (en) * | 2005-03-17 | 2005-11-16 | 上海交通大学 | Method for structuring field effect transistor in multiple channels from Nano carbon tubes |
| CN1709792A (en) * | 2004-06-16 | 2005-12-21 | 东元奈米应材股份有限公司 | Nano carbon tube suspensoid and its manufacturing method |
| US20060006367A1 (en) * | 2004-07-06 | 2006-01-12 | Chun-Yen Hsiao | Carbon nanotube suspension |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1643192A (en) * | 2002-01-15 | 2005-07-20 | 毫微动力学股份有限公司 | Compositions of suspended carbon nanotubes, methods of making the same, and uses thereof |
| CN1709792A (en) * | 2004-06-16 | 2005-12-21 | 东元奈米应材股份有限公司 | Nano carbon tube suspensoid and its manufacturing method |
| US20060006367A1 (en) * | 2004-07-06 | 2006-01-12 | Chun-Yen Hsiao | Carbon nanotube suspension |
| CN1697146A (en) * | 2005-03-17 | 2005-11-16 | 上海交通大学 | Method for structuring field effect transistor in multiple channels from Nano carbon tubes |
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