CN111470489A - Conversion method for converting single-wall carbon nanotube into double-wall carbon nanotube - Google Patents
Conversion method for converting single-wall carbon nanotube into double-wall carbon nanotube Download PDFInfo
- Publication number
- CN111470489A CN111470489A CN201911073056.9A CN201911073056A CN111470489A CN 111470489 A CN111470489 A CN 111470489A CN 201911073056 A CN201911073056 A CN 201911073056A CN 111470489 A CN111470489 A CN 111470489A
- Authority
- CN
- China
- Prior art keywords
- carbon nanotube
- walled carbon
- double
- wall carbon
- heating
- 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
Images
Classifications
-
- 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
-
- 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
- C01B2202/04—Nanotubes with a specific amount of walls
-
- 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
Abstract
The invention belongs to the field of carbon nanotube material preparation processes, and particularly relates to a conversion method for converting a single-wall carbon nanotube into a double-wall carbon nanotube. The invention provides a conversion method for converting a single-wall carbon nanotube into a double-wall carbon nanotube, which comprises the following steps of: heating the single-walled carbon nanotube after heating under the condition of vacuum or protective atmosphere, and cooling to room temperature after heating to obtain a double-walled carbon nanotube; the average diameter of the single-walled carbon nanotube is 1.1-1.7 nm. Through detection, the double-wall carbon nano tube prepared by the technical scheme provided by the invention has narrow diameter distribution; meanwhile, the prepared double-wall carbon nano tube has higher yield, stability and purity. The invention provides a conversion method for converting a single-wall carbon nanotube into a double-wall carbon nanotube, which solves the technical defects of low yield and wide product diameter range of the conversion method for the double-wall carbon nanotube in the prior art.
Description
Technical Field
The invention belongs to the field of carbon nanotube material preparation processes, and particularly relates to a conversion method for converting a single-wall carbon nanotube into a double-wall carbon nanotube.
Background
The double-walled carbon nanotube combines the advantages of the multi-walled carbon nanotube and the single-walled carbon nanotube, such as good conductivity, flexibility and high specific surface area similar to the single-walled carbon nanotube, and good thermal stability and oxidation resistance similar to the multi-walled carbon nanotube. Compared with a multi-wall carbon nanotube and a single-wall carbon nanotube, the double-wall carbon nanotube overcomes the problem of poor thermal stability of the single-wall carbon nanotube, and meanwhile, the long diameter ratio and the specific surface area of the double-wall carbon nanotube are larger than those of the multi-wall carbon nanotube, and the double-wall carbon nanotube has better flexibility.
The method for synthesizing the double-wall carbon nano tube generally comprises a chemical vapor deposition method and an arc discharge method; the double-wall carbon nano-tube produced by the chemical vapor deposition method has high purity and low yield, the double-wall carbon nano-tube prepared by the arc discharge method contains unremovable graphite impurities, and in addition, the double-wall carbon nano-tube with wider diameter distribution can be produced by the two methods.
To obtain high purity double-walled carbon nanotubes with narrow diameter distribution, fullerene/ferrocene filled single-walled carbon nanotubes can be converted to multi-walled carbon nanotubes by heating them in vacuum below 1000 ℃, but this method takes long time and produces small yields, and is not suitable for small diameter single-walled carbon nanotubes.
Therefore, it is an urgent need of the skilled in the art to develop a method for transforming a single-walled carbon nanotube into a double-walled carbon nanotube, which is used to solve the technical defects of low yield and wide product diameter range of the double-walled carbon nanotube transformation method in the prior art.
Disclosure of Invention
In view of the above, the present invention provides a method for transforming a single-walled carbon nanotube into a double-walled carbon nanotube, which is used to solve the technical defects of low yield and wide product diameter range of the double-walled carbon nanotube transformation method in the prior art.
The invention provides a conversion method for converting a single-wall carbon nanotube into a double-wall carbon nanotube, which comprises the following steps of: heating the single-walled carbon nanotube after heating under the condition of vacuum or protective atmosphere, and cooling to room temperature after heating to obtain a double-walled carbon nanotube;
the average diameter of the single-walled carbon nanotube is 1.1-1.7 nm.
Preferably, the heat treatment is carried out while the single-walled carbon nanotubes are placed in an alumina and/or magnesia container.
Preferably, the heating temperature is 1100-1500 ℃, and the heating time is 0.5-2 h.
Preferably, the temperature rising speed is 5-20 ℃/min, and the temperature reducing speed is 5-20 ℃/min.
Preferably, the transformation method further comprises: a purification step performed before the heat treatment step.
Preferably, the purification method is: after the purified single-walled carbon nanotube is dissolved, the purified single-walled carbon nanotube is obtained by filtering, washing, rinsing and drying in turn.
Preferably, the dissolving method is as follows: mixing the single-walled carbon nanotube with a hydrochloric acid solution with the concentration of 5-37%, standing and/or carrying out ultrasonic treatment, and completing dissolution;
the washing method comprises the following steps: washing with deionized water;
the rinsing method comprises the following steps: rinsing with ethanol solution with concentration more than 90%;
the drying method comprises the following steps: drying at below 70 deg.C.
Preferably, the standing time is 1-24 h, and the ultrasonic treatment time is 10-60 min;
the washing frequency is 2-3 times, and the rinsing frequency is 1 time.
Preferably, the vacuum has a pressure of 10-3～10-5Pa。
Preferably, the protective atmosphere is argon and/or nitrogen.
In summary, the present invention provides a method for transforming a single-walled carbon nanotube into a double-walled carbon nanotube, wherein the method comprises: heating the single-walled carbon nanotube after heating under the condition of vacuum or protective atmosphere, and cooling to room temperature after heating to obtain a double-walled carbon nanotube; the average diameter of the single-walled carbon nanotube is 1.1-1.7 nm. Through detection, the double-wall carbon nano tube prepared by the technical scheme provided by the invention has narrow diameter distribution; meanwhile, the prepared double-wall carbon nano tube has higher yield, stability and purity. The invention provides a conversion method for converting a single-wall carbon nanotube into a double-wall carbon nanotube, which solves the technical defects of low yield and wide product diameter range of the conversion method for the double-wall carbon nanotube in the prior art.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic flow chart of a conversion method for converting single-walled carbon nanotubes into double-walled carbon nanotubes according to the present invention;
FIG. 2 is a Raman spectrum characterization chart of the carbon nanotubes before and after the heat treatment in example 1;
FIG. 3 is a Raman spectrum characterization chart of the carbon nanotubes before and after the heat treatment in example 2;
FIG. 4 is a Raman spectrum characterization chart of the carbon nanotubes before and after the heat treatment in example 3;
FIG. 5 is a Raman spectrum characterization chart of the carbon nanotubes before and after the heat treatment in example 4;
FIG. 6 is a Raman spectrum characterization chart of carbon nanotubes before and after heat treatment in example 5.
Detailed Description
The embodiment of the invention provides a conversion method for converting a single-wall carbon nanotube into a double-wall carbon nanotube, which is used for solving the technical defects of low yield and wide product diameter range of the double-wall carbon nanotube conversion method in the prior art.
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
To illustrate the present invention in more detail, the following examples are provided to describe the conversion method of single-walled carbon nanotubes into double-walled carbon nanotubes.
Example 1
This example is a specific example of double-walled carbon nanotube conversion using single-walled carbon nanotubes with an average diameter of 1.1 nm; in this example, the single-walled carbon nanotubes used were prepared from high pressure carbon monoxide.
Dissolving 20mg of single-walled carbon nanotubes with the average diameter of 1.1nm in 20ml of hydrochloric acid solution with the concentration of 37%, mixing, carrying out water bath ultrasonic treatment for 12min, filtering the solution after ultrasonic treatment by using a polytetrafluoroethylene filter membrane with the pore diameter of 0.22 mu m, washing the filtered solution by deionized water for 3 times and rinsing the solution by ethanol with the concentration of more than 90% for 1 time in sequence, and then drying to obtain the purified single-walled carbon nanotubes.
Placing the purified single-walled carbon nanotube in an alumina boat, placing the whole alumina boat in a high-temperature furnace, and reducing the pressure of the high-temperature furnace to 10 by using a mechanical pump and/or a molecular pump-4Pa, heating to 1400 ℃ at a heating rate of 20 ℃/min, carrying out heat treatment for 0.5h, and cooling to room temperature at a cooling rate of 20 ℃/min after the heat treatment is finished, thus obtaining the double-wall carbon nano tube product.
Fig. 2 is a raman spectrum characterization chart of the carbon nanotube before and after the heat treatment in this example, and the raman peak position of the purified single-walled carbon nanotube is located at 180 to 300 wave numbers, which shows that the diameter distribution of the single-walled carbon nanotube is 0.8 to 1.3 nm. When the raman spectrum of the sample obtained after the heat treatment is measured, a new raman signal is observed at 350 to 400 wave numbers, which corresponds to a diameter of about 0.6 to 0.7nm, which means that new and smaller carbon nanotubes are generated in the original thicker single-walled carbon nanotubes after the heat treatment, i.e., double-walled carbon nanotube structures are formed.
Further, when the heat-treated product was observed by using a high power transmission electron microscope, it was observed that: the wall of the double-wall carbon nano tube is complete, and statistical analysis shows that the proportion of the double-wall carbon nano tube reaches more than 30 percent when more than 100 carbon nano tubes are found. Therefore, the transformation method provided by the invention has the advantages of high yield and high purity of the obtained double-wall carbon nano tube.
Example 2
This example is a specific example of double-walled carbon nanotube conversion using single-walled carbon nanotubes with an average diameter of 1.3 nm; in this example, the single-walled carbon nanotubes used were prepared by a pyrolysis method.
Dissolving 20mg of single-walled carbon nanotubes with the average diameter of 1.3nm in 10ml of hydrochloric acid solution with the concentration of 37%, mixing, standing, soaking for 20h, filtering the soaked solution by using a polytetrafluoroethylene filter membrane with the pore diameter of 0.22 mu m, washing the filtered solution by deionized water for 2 times and rinsing the solution by ethanol with the concentration of more than 90% for 1 time in sequence, and drying to obtain the purified single-walled carbon nanotubes.
Placing the purified single-walled carbon nanotube in an alumina boat, placing the whole alumina boat in a high-temperature furnace, and reducing the pressure of the high-temperature furnace to 10 by using a mechanical pump and/or a molecular pump-5And Pa, heating to 1500 ℃ at the heating rate of 10 ℃/min, carrying out heat treatment for 1.5h, and cooling to room temperature at the cooling rate of 5 ℃/min after finishing the heat treatment to obtain the double-wall carbon nano tube product.
Fig. 3 is a raman spectrum characterization chart of the carbon nanotubes before and after the heat treatment in this example, and the raman peak positions of the purified single-walled carbon nanotubes are between 160 and 260 wave numbers, which shows that the diameter distribution of the single-walled carbon nanotubes is between 0.94 and 1.54 nm. The raman spectrum of the sample obtained after the heat treatment was measured and a new raman signal was observed at 330 to 360 wave numbers, corresponding to a diameter of about 0.67 to 0.73nm, which means that new and smaller carbon nanotubes were formed in the original thicker single-walled carbon nanotubes after the heat treatment, i.e., double-walled carbon nanotube structures were formed.
Further, when the heat-treated product was observed by a high-power transmission electron microscope, it was observed that: the wall of the double-wall carbon nano tube is complete, and statistical analysis shows that the proportion of the double-wall carbon nano tube reaches more than 90 percent when more than 100 carbon nano tubes are used. Therefore, the transformation method provided by the invention has the advantages of high yield and high purity of the obtained double-wall carbon nano tube.
Example 3
This example is a specific example of double-walled carbon nanotube conversion using single-walled carbon nanotubes with an average diameter of 1.4 nm; in this embodiment, the single-walled carbon nanotube used is a metal-type single-walled carbon nanotube prepared by an arc process.
Placing the single-walled carbon nanotube in an alumina boat, placing the whole alumina boat in a high-temperature furnace, and reducing the pressure of the high-temperature furnace to 10 by using a mechanical pump and/or a molecular pump-3Pa, heating to 1440 ℃ at a heating rate of 5 ℃/min, carrying out heat treatment for 2h, and cooling to room temperature at a cooling rate of 5 ℃/min after the heat treatment is finished, thus obtaining the double-wall carbon nano tube product.
Fig. 4 is a raman spectrum characterization chart of the carbon nanotube before and after the heat treatment in this example, where the raman peak position corresponding to the single-walled carbon nanotube is around 170 wave numbers, which shows that the diameter of the single-walled carbon nanotube is distributed at 1.46 nm. When the raman spectrum of the sample obtained after the heat treatment is measured, a new raman signal is observed at 240 to 350 wave numbers, and the corresponding diameter is about 0.69 to 1.02nm, which means that new and smaller carbon nanotubes are generated in the original thicker single-wall carbon nanotube after the heat treatment, and a double-wall carbon nanotube structure is formed.
Further, when the heat-treated product was observed by a high-power transmission electron microscope, it was observed that: a large number of double-wall carbon nanotubes can be observed, the pipe wall of each double-wall carbon nanotube is complete, and statistical analysis shows that more than 100 carbon nanotubes show that the ratio of the double-wall carbon nanotubes reaches more than 90%. Therefore, the transformation method provided by the invention has the advantages of high yield and high purity of the obtained double-wall carbon nano tube.
Example 4
This example is a specific example of double-walled carbon nanotube conversion using single-walled carbon nanotubes with an average diameter of 1.4 nm; in this example, the single-walled carbon nanotubes used were semiconductor-type single-walled carbon nanotubes prepared and separated by an arc method.
Placing the single-walled carbon nanotube in a magnesium oxide boat, placing the whole magnesium oxide boat in a high-temperature furnace, then heating to 1480 ℃ at a heating rate of 5 ℃/min in a high-purity argon protective atmosphere with the purity of more than 99.999%, then carrying out heat treatment for 1h, and cooling to room temperature at a cooling rate of 5 ℃/min after the heat treatment is finished, thus obtaining the double-walled carbon nanotube product.
Fig. 5 is a raman spectrum characterization chart of the carbon nanotube before and after the heat treatment in this example, where the raman peak position corresponding to the single-walled carbon nanotube is around 170 wave numbers, which shows that the diameter of the single-walled carbon nanotube is distributed at 1.46 nm. When the raman spectrum of the sample obtained after the heat treatment is measured, a new raman signal is observed at 240 to 350 wave numbers, and the corresponding diameter is about 0.69 to 1.02nm, which means that new and smaller carbon nanotubes are generated in the original thicker single-wall carbon nanotube after the heat treatment, and a double-wall carbon nanotube structure is formed.
Further, when the heat-treated product was observed by a high-power transmission electron microscope, it was observed that: the wall of the double-wall carbon nano tube is complete, a large number of double-wall carbon nano tubes can be observed, and statistical analysis shows that more than 100 carbon nano tubes account for more than 95 percent of the double-wall carbon nano tubes. Therefore, the transformation method provided by the invention has the advantages of high yield and high purity of the obtained double-wall carbon nano tube.
Further analysis by combining the example 3 and the example 4 shows that, no matter the raw material is a metal-type single-walled carbon nanotube or a semiconductor-type single-walled carbon nanotube, a small-diameter inner-layer carbon nanotube can be grown inside the single-walled carbon nanotube, thereby forming a double-walled carbon nanotube structure.
Example 5
This example is a specific example of double-walled carbon nanotube conversion using single-walled carbon nanotubes with an average diameter of 1.7; in this example, the single-walled carbon nanotubes used were prepared by a pyrolysis method.
Dissolving 50mg of single-walled carbon nanotubes with the average diameter of 1.7nm in 50ml of 10% hydrochloric acid solution, mixing, carrying out water bath ultrasonic treatment for 60min, filtering the solution subjected to ultrasonic treatment by using a polytetrafluoroethylene filter membrane with the pore diameter of 0.22 mu m, sequentially washing the filtered solution with deionized water for 2 times and rinsing the solution with ethanol with the concentration of more than 90% for 1 time, and then drying to obtain the purified single-walled carbon nanotubes.
Placing the purified single-walled carbon nanotube in a magnesium oxide boat, placing the magnesium oxide boat in a high-temperature furnace integrally, then heating to 1550 ℃ at a heating rate of 5 ℃/min in a high-purity nitrogen protective atmosphere with the purity of more than 99.999%, then carrying out heat treatment for 1h, and cooling to room temperature at a cooling rate of 5 ℃/min after the heat treatment is finished, thus obtaining a double-walled carbon nanotube product.
Fig. 6 is a raman spectrum characterization chart of the carbon nanotube before and after the heat treatment in this example, and the raman peak positions of the purified single-walled carbon nanotube are located at 120 to 170 wave numbers, which shows that the diameter distribution of the single-walled carbon nanotube is between 1.4 and 2.2 nm. The raman spectrum of the sample obtained after the heat treatment was measured and a new raman signal was observed at 260 to 370 wavenumbers, corresponding to a diameter of about 0.65 to 0.94nm, which means that new and smaller carbon nanotubes were formed in the original thicker single-walled carbon nanotubes after the heat treatment, i.e., double-walled carbon nanotube structures were formed.
Further, when the heat-treated product was observed by a high-power transmission electron microscope, it was observed that: the wall of the double-wall carbon nano tube is complete, a large number of double-wall carbon nano tubes can be observed, and statistical analysis shows that more than 100 carbon nano tubes account for more than 92 percent of the double-wall carbon nano tubes. Therefore, the transformation method provided by the invention has the advantages of high yield and high purity of the obtained double-wall carbon nano tube.
From the technical scheme and the embodiment, the method for converting the single-wall carbon nanotube into the double-wall carbon nanotube has the following advantages:
1. in the conversion method provided by the invention, the rearrangement of carbon atoms in the single-wall carbon nano tube is realized by heating the single-wall carbon nano tube at high temperature, so that the double-wall carbon nano tube is formed by conversion;
2. in the conversion method provided by the invention, the prepared double-wall carbon nano tube has the advantages of high yield, small diameter, narrow diameter distribution and high purity;
3. in the transformation method provided by the invention, the growth of the inner tube is irrelevant to the conductivity type of the single-walled carbon nanotube, the original diameter of the single-walled carbon nanotube is the most important factor influencing the synthesis of the inner tube, and the used single-walled carbon nanotube raw material can grow a layer of small-diameter carbon nanotube inside the single-walled carbon nanotube no matter a metal type or a semiconductor type single-walled carbon nanotube is used, so that the double-walled carbon nanotube is obtained;
4. in the conversion method provided by the invention, more than 90% of single-wall carbon nanotubes can be converted into double-wall carbon nanotubes by high-temperature heat treatment under the condition of not adding a carbon source;
5. in the transformation method provided by the present invention, there is no limitation on the specific preparation method of the raw material single-walled carbon nanotube used.
In summary, the present invention provides a method for transforming a single-walled carbon nanotube into a double-walled carbon nanotube, wherein the method comprises: heating the single-walled carbon nanotube after heating under the condition of vacuum or protective atmosphere, and cooling to room temperature after heating to obtain a double-walled carbon nanotube; the average diameter of the single-walled carbon nanotube is 1.1-1.7 nm. Through detection, the double-wall carbon nano tube prepared by the technical scheme provided by the invention has narrow diameter distribution; meanwhile, the prepared double-wall carbon nano tube has higher yield, stability and purity. The invention provides a conversion method for converting a single-wall carbon nanotube into a double-wall carbon nanotube, which solves the technical defects of low yield and wide product diameter range of the conversion method for the double-wall carbon nanotube in the prior art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method for converting a single-walled carbon nanotube into a double-walled carbon nanotube, the method comprising: heating the single-walled carbon nanotube after heating under the condition of vacuum or protective atmosphere, and cooling to room temperature after heating to obtain a double-walled carbon nanotube;
the average diameter of the single-walled carbon nanotube is 1.1-1.7 nm.
2. The conversion process of claim 1, wherein the heat treatment places the single-walled carbon nanotubes in an alumina and/or magnesia container.
3. The conversion process according to claim 1, wherein the heating temperature is 1100 to 1500 ℃ and the heating time is 0.5 to 2 hours.
4. The conversion method according to claim 1, wherein the temperature raising rate is 5 to 20 ℃/min and the temperature lowering rate is 5 to 20 ℃/min.
5. The transformation method of claim 1, further comprising: a purification step performed before the heat treatment step.
6. The transformation method according to claim 5, wherein the purification method is: after the purified single-walled carbon nanotube is dissolved, the purified single-walled carbon nanotube is obtained by filtering, washing, rinsing and drying in turn.
7. The transformation method according to claim 6, wherein the dissolution method is: mixing the single-walled carbon nanotube with a hydrochloric acid solution with the concentration of 5-37%, standing and/or carrying out ultrasonic treatment, and completing dissolution;
the washing method comprises the following steps: washing with deionized water;
the rinsing method comprises the following steps: rinsing with ethanol solution with concentration more than 90%;
the drying method comprises the following steps: drying at below 70 deg.C.
8. The transformation method according to claim 7, wherein the standing time is 1-24 h, and the ultrasonic treatment time is 10-60 min;
the washing frequency is 2-3 times, and the rinsing frequency is 1 time.
9. The conversion process defined in claim 1, wherein the vacuum is at a pressure of 10%-3～10-5Pa。
10. The conversion process according to claim 1, characterized in that the protective atmosphere is argon and/or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911073056.9A CN111470489A (en) | 2019-11-05 | 2019-11-05 | Conversion method for converting single-wall carbon nanotube into double-wall carbon nanotube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911073056.9A CN111470489A (en) | 2019-11-05 | 2019-11-05 | Conversion method for converting single-wall carbon nanotube into double-wall carbon nanotube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111470489A true CN111470489A (en) | 2020-07-31 |
Family
ID=71744883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911073056.9A Pending CN111470489A (en) | 2019-11-05 | 2019-11-05 | Conversion method for converting single-wall carbon nanotube into double-wall carbon nanotube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111470489A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115285973A (en) * | 2022-08-11 | 2022-11-04 | 中山大学 | Method for synthesizing carbon chain |
| CN115340086A (en) * | 2022-08-01 | 2022-11-15 | 中山大学 | Method for improving carbon chain yield |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010016907A2 (en) * | 2008-08-05 | 2010-02-11 | Northwestern University | Methods for sorting nanotubes by wall number |
| US7718224B2 (en) * | 2005-08-04 | 2010-05-18 | The Regents Of The University Of California | Synthesis of single-walled carbon nanotubes |
| CN102020267A (en) * | 2010-12-30 | 2011-04-20 | 上海大学 | Purification method of single-wall carbon nano tube |
| CN104310375A (en) * | 2014-10-09 | 2015-01-28 | 清华大学 | Method for removing carbon impurities in single-walled carbon nanotube |
| CN107601460A (en) * | 2017-11-02 | 2018-01-19 | 清华大学 | A kind of carbon nanotube product and preparation method thereof |
| CN109592668A (en) * | 2019-01-25 | 2019-04-09 | 厦门大学 | A method of control carbon nanotube diameter |
-
2019
- 2019-11-05 CN CN201911073056.9A patent/CN111470489A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7718224B2 (en) * | 2005-08-04 | 2010-05-18 | The Regents Of The University Of California | Synthesis of single-walled carbon nanotubes |
| WO2010016907A2 (en) * | 2008-08-05 | 2010-02-11 | Northwestern University | Methods for sorting nanotubes by wall number |
| CN102020267A (en) * | 2010-12-30 | 2011-04-20 | 上海大学 | Purification method of single-wall carbon nano tube |
| CN104310375A (en) * | 2014-10-09 | 2015-01-28 | 清华大学 | Method for removing carbon impurities in single-walled carbon nanotube |
| CN107601460A (en) * | 2017-11-02 | 2018-01-19 | 清华大学 | A kind of carbon nanotube product and preparation method thereof |
| CN109592668A (en) * | 2019-01-25 | 2019-04-09 | 厦门大学 | A method of control carbon nanotube diameter |
Non-Patent Citations (4)
| Title |
|---|
| A. BOUGRINE ET AL: ""Influence of high temperature treatments on single-walled carbon nanotubes structure, morphology and surface properties"", 《CARBON》 * |
| LEI SHI ET AL: ""Templated direct growth of ultra-thin double-walled carbon nanotubes"", 《NANOSCALE》 * |
| U. J. KIM ET AL: ""Effect of the tube diameter distribution on the high-temperature structural modification of bundled single-walled carbon nanotubes"", 《JOURNAL OF PHYSICAL CHEMISTRY B》 * |
| 田红灯: ""单壁与双壁碳纳米管的物理特性研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115340086A (en) * | 2022-08-01 | 2022-11-15 | 中山大学 | Method for improving carbon chain yield |
| CN115285973A (en) * | 2022-08-11 | 2022-11-04 | 中山大学 | Method for synthesizing carbon chain |
| CN115285973B (en) * | 2022-08-11 | 2023-09-22 | 中山大学 | Method for synthesizing carbon chain |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Nikolaev et al. | Diameter doubling of single-wall nanotubes | |
| Ramesh et al. | Purification and characterization of double-wall carbon nanotubes synthesized by catalytic chemical vapor deposition on mesoporous silica | |
| JP2010132543A (en) | Method for producing and purifying carbon nanotube, carbon nanotube and carbon nanotube element | |
| CN111470489A (en) | Conversion method for converting single-wall carbon nanotube into double-wall carbon nanotube | |
| CN105731418B (en) | The preparation method of the high-purity CNT of high-purity tubulose conjugation microporous polymer carbonization | |
| JP2006188389A5 (en) | ||
| CN105645375A (en) | Method for direct growth of porous carbon nanotubes on nano-porous copper | |
| JP2003520176A (en) | High-yield vapor deposition method for large-scale single-walled carbon nanotube preparation | |
| Zhao et al. | Study on purification and tip-opening of CNTs fabricated by CVD | |
| Karthikeyan et al. | Synthesis and characterization of multi-walled carbon nanotubes from biodiesel oil: green nanotechnology route | |
| CN112973625B (en) | Lignin-based carbon nanotube and preparation method and application thereof | |
| US20230073650A1 (en) | Carbon nanotube (cnt)-based three-dimensional ordered macroporous (3dom) material and preparation method thereof | |
| CN102020267B (en) | Purification method of single-wall carbon nano tube | |
| CN102658153B (en) | Preparation method of copper substrate surface growth fullerene doped porous carbon nanofibers | |
| JP2012508159A (en) | Process for generating carbon nanotubes (CNTs) | |
| Lee et al. | Well-ordered Co nanowire arrays for aligned carbon nanotube arrays | |
| CN115057429A (en) | Method for co-production of nitrogen-doped lignin-based carbon nanotube and biochar | |
| JP4045343B2 (en) | Carbon nanotube production method and deformed carbon nanotube | |
| Asli et al. | Mechanism of vertically arrays of carbon nanotubes by camphor based catalysed in-situ growth | |
| Khatri et al. | Synthesis of single walled carbon nanotubes by ultrasonic spray pyrolysis method | |
| Li et al. | The synthesis of MWNTs/SWNTs multiple phase nanowire arrays in porous anodic aluminum oxide templates | |
| Sun et al. | Metal catalyst-free mist flow chemical vapor deposition growth of single-wall carbon nanotubes using C60 colloidal solutions | |
| CN106458591A (en) | Process for preparing single wall carbon nanotubes of pre-defined chirality | |
| CN103508438B (en) | Method for directly growing bamboo-like carbon nanometer tube on nano-porous copper | |
| Cheng et al. | A one-step single source route to carbon nanotubes. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200731 |
|
| RJ01 | Rejection of invention patent application after publication |