CN111559742A - Method for improving stability of carbon nano tube - Google Patents
Method for improving stability of carbon nano tube Download PDFInfo
- Publication number
- CN111559742A CN111559742A CN201911351454.2A CN201911351454A CN111559742A CN 111559742 A CN111559742 A CN 111559742A CN 201911351454 A CN201911351454 A CN 201911351454A CN 111559742 A CN111559742 A CN 111559742A
- Authority
- CN
- China
- Prior art keywords
- carbon nano
- nano tube
- lignosulfonate
- carbon
- stability
- 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
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
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
- C01B32/158—Carbon nanotubes
- C01B32/168—After-treatment
- C01B32/174—Derivatisation; Solubilisation; Dispersion in solvents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a method for improving the stability of a carbon nano tube, which comprises the following steps: ultrasonic dispersion of carbon nano tubes in water, mixed acid impurity removal, washing of the carbon nano tubes by deionized water, soaking in absolute ethyl alcohol and drying to obtain carbon nano tubes A; then adding the carbon nano tube A into an ethanol water solution, adding lignosulfonate after uniformly mixing, fully stirring, uniformly mixing, heating and inoculating, and adding a surfactant to obtain a stably dispersed carbon nano tube dispersion liquid; and (4) drying the carbon nano tube dispersion liquid in vacuum to obtain the carbon nano tube. According to the invention, the lignosulfonate is used for dispersing and inoculating the carbon nano tube, so that the dispersion stability of the carbon nano tube is enhanced, and the obtained dispersion liquid has high stability and wide applicable range; the invention solves the problems of easy agglomeration and difficult dispersion of the carbon nano tube in the aqueous solution, and obtains the carbon nano tube dispersoid with high stability and high concentration; the improved method of the invention has simple process and is easy to realize large-scale application.
Description
Technical Field
The invention relates to the technical field of carbon nanotubes, in particular to a method for improving the stability of a carbon nanotube.
Background
The carbon nano tube as a one-dimensional nano material has light weight, perfect connection of a hexagonal structure and a plurality of abnormal mechanical, electrical and chemical properties, and has wide application prospect continuously shown with the deep research of the carbon nano tube and the nano material in recent years.
Carbon nanotubes exhibit insulating, conductive or semiconducting properties depending on their inherent chirality. Carbon nanotubes have a structure in which carbon atoms are strongly covalently bonded to each other. Due to this structure, the carbon nanotube has tensile strength about 100 times that of steel, high flexibility and elasticity, and chemical stability. Carbon nanotubes are of industrial importance in the manufacture of composites due to their size and specific physical properties. Carbon nanotubes can find wide application in a variety of fields. For example, carbon nanotubes are suitable for use in secondary batteries, fuel cells, electrodes for electrochemical storage devices, electromagnetic wave shielding cases, field emission displays, and gas sensors.
However, the catalytic metal used to manufacture the carbon nanotubes is considered to be an impurity during subsequent use of the carbon nanotubes and reduces the basic physical properties (e.g., thermal and chemical stability) of the carbon nanotubes. Therefore, a method of carbon nanotubes having improved basic physical properties is required. The surface of the carbon nano tube is chemically inert, lacks active groups and has low solubility in water or organic solvent; in addition, the carbon nano tube has the characteristics of large specific surface area and large length-diameter ratio, so that the carbon nano tube is easy to agglomerate and wind in a solvent, and the application of the carbon nano tube is severely limited by the combination of the factors. Therefore, it is important and crucial to fully utilize the carbon nanotubes to enhance various properties of the composite material and to solve the problem of good stability of the carbon nanotubes.
Disclosure of Invention
In view of the above problems in the prior art, it is an object of the present invention to provide a method for improving the stability of carbon nanotubes and the stability of a dispersion.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a method for improving the stability of carbon nanotubes comprises the following steps:
(1) adding carbon nano tubes into water for ultrasonic treatment to obtain dispersed suspension;
(2) adding a certain amount of mixed acid into the suspension, heating to 90-110 ℃, performing ultrasonic treatment for 2-4h, cooling to room temperature, washing the carbon nanotube solution with deionized water for 2-3 times, soaking with absolute ethyl alcohol for 2-4h, filtering, and drying the carbon nanotube in an oven at 60-100 ℃ to obtain a carbon nanotube A;
(3) adding the carbon nano tube A into an aqueous solution of ethylene glycol, fully and uniformly mixing, adding lignosulfonate, fully stirring, uniformly mixing, heating to 50-75 ℃, inoculating for 1-3h, adding a surfactant, and uniformly mixing to obtain a stably dispersed carbon nano tube dispersion liquid;
(4) and (3) putting the carbon nano tube dispersion liquid into a vacuum oven with the temperature of 60-100 ℃ for drying for 1-4h to obtain the carbon nano tube.
Preferably, the mixed acid in the step (2) is a mixed solution of concentrated nitric acid and sulfuric acid (volume ratio is 2:1), and the molar concentration of the acid after the mixed acid is added into the suspension is 0.5-1.5 mol/L.
Preferably, the ethylene glycol aqueous solution in the step (3) is formed by mixing 1 volume of ethylene glycol and 3-4 volumes of water; the mass ratio of the carbon nano tube A to the ethylene glycol aqueous solution is 1 (8-12).
Preferably, the surfactant in step (3) is one of cetyltrimethyl ammonium bromide (CTAB) and cetyltrimethyl ammonium chloride (CTAC).
Preferably, the lignosulfonate in the step (3) is one or more of calcium lignosulfonate, sodium lignosulfonate and iron-chromium lignosulfonate; the molecular weight of the lignosulfonate is 5000-10000.
Preferably, the mass ratio of the added lignosulfonate to the carbon nanotubes A in the step (3) is (8-10) to 1; after the surfactant is added, the molar concentration of the surfactant is 0.1-0.3 mol/L.
In the invention, the carbon nano tube is ultrasonically dispersed and then mixed with acid, so that active substance particles (including a catalyst) and impurities in the surface of the dispersed carbon nano tube can be removed. The carbon nano tubes are washed by deionized water and then soaked by absolute ethyl alcohol, so that the carbon nano tubes can be relatively dispersed, no bonding is generated, and the drying efficiency is improved.
According to the invention, by utilizing the characteristics of amphipathy and a cyclic conjugated structure of lignosulfonate, under the condition of a water phase, lignosulfonate can be used as a dispersing agent for preparing the carbon nano tube, and can form pi-pi conjugation with the carbon nano tube through an aromatic ring structure of lignosulfonate, so that lignosulfonate is adsorbed to the surface of the carbon nano tube; meanwhile, the negative charge of the sulfonate in the lignosulfonate forms a double-electric-layer structure on the surface of the carbon nano tube, and the aggregation between the carbon nano tubes is effectively avoided through the electrostatic action; on the other hand, the lignosulfonate has a unique three-dimensional network structure and has larger steric hindrance compared with a straight-chain type high molecular surfactant. Therefore, the lignosulfonate can effectively prevent agglomeration between the carbon nanotubes. The carbon nano-tube is fully dispersed by inoculation at 50-75 ℃. The surfactant (CTAB/CTAC) used in the invention can be used as a stabilizer firstly, so that the reaction system is dispersed uniformly, agglomeration among particles is prevented, and on the other hand, if the concentration of the carbon nano tubes in the system is higher, the CTAB/CTAC can tend to control the isotropy of the carbon nano tubes, so that the isotropy of the carbon nano tubes is increased.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, the lignosulfonate is used for dispersing and inoculating the carbon nano tube, so that the dispersion stability of the carbon nano tube is enhanced, and the obtained dispersion liquid has high stability and wide applicable range;
(2) the invention solves the problems of easy agglomeration and difficult dispersion of the carbon nano tube in the aqueous solution, and obtains the carbon nano tube dispersoid with high stability and high concentration;
(3) the improved method has simple process and short preparation period, and is easy to realize large-scale application.
Detailed Description
The present invention will be further described with reference to examples, but the present invention is not limited to these examples.
Example 1
(1) 1 part by weight of carbon nanotubes was added to 10 parts by weight of water and subjected to ultrasonic treatment to obtain a dispersed suspension.
(2) Adding a certain amount of mixed acid into the suspension, heating to 90 ℃, performing ultrasonic treatment for 3h, cooling to room temperature, washing the carbon nanotube solution with deionized water for 3 times, soaking in absolute ethyl alcohol for 3h, filtering, and drying the carbon nanotube in an oven at 60 ℃ to obtain a carbon nanotube A;
the mixed acid is a mixed solution (volume ratio is 2:1) of concentrated nitric acid and sulfuric acid, and the molar concentration of the acid after the mixed acid is added into the suspension is 0.5 mol/L; the dosage of the deionized water is 1 time of the mass of the carbon nano tube solution each time.
(3) Adding the carbon nano tube A into an ethanol aqueous solution, fully and uniformly mixing, adding lignosulfonate (calcium lignosulfonate with the molecular weight of 5000-10000), fully stirring, uniformly mixing, heating to 75 ℃, inoculating for 2h, adding a surfactant (CTAB), and uniformly mixing to obtain a stably dispersed carbon nano tube dispersion liquid;
the mixing ratio of ethanol and water in the ethanol water solution is 1: 3; the mass ratio of the carbon nano tube A to the ethanol water solution is 1: 8; the mass ratio of the added lignosulfonate to the carbon nano tube A is 8: 1; after the surfactant is added, the molar concentration of the surfactant is 0.1 mol/L.
The apparent color of the obtained carbon nanotube dispersion liquid was dark black, and the concentration was 3.8 g/L. The Zeta potential of the dispersion was determined to be-58.3 mV, and no precipitate was observed after centrifugation at 5000r/min for 20min using a centrifuge. The carbon nano tube dispersion liquid is proved to have better stability.
(4) And (3) putting the carbon nano tube dispersion liquid into a vacuum oven at 60 ℃ for drying for 4 hours to obtain the carbon nano tube.
The original carbon nano tube has obvious thermal weight loss phenomenon from 515 ℃ to 625 ℃. The carbon nano tube treated by the method of the invention has obvious thermal weight loss phenomenon from 535 ℃ to 670 ℃.
Example 2
(1) 1 part by weight of carbon nanotubes was added to 15 parts by weight of water and subjected to ultrasonic treatment to obtain a dispersed suspension.
(2) Adding a certain amount of mixed acid into the suspension, heating to 100 ℃, performing ultrasonic treatment for 2h, cooling to room temperature, washing the carbon nanotube solution with deionized water for 3 times, soaking with absolute ethyl alcohol for 2h, filtering, and drying the carbon nanotube in an oven at 100 ℃ to obtain a carbon nanotube A;
the mixed acid is a mixed solution (volume ratio is 2:1) of concentrated nitric acid and sulfuric acid, and the molar concentration of the acid after the mixed acid is added into the suspension is 1.0 mol/L; the dosage of the deionized water is 1 time of the mass of the carbon nano tube solution each time.
(3) Adding the carbon nano tube A into an ethanol aqueous solution, fully and uniformly mixing, adding lignosulfonate (sodium lignosulfonate with the molecular weight of 5000-10000), fully stirring, uniformly mixing, heating to 60 ℃, inoculating for 3h, adding a surfactant (CTAC), and uniformly mixing to obtain a stably dispersed carbon nano tube dispersion liquid;
the mixing ratio of ethanol and water in the ethanol water solution is 1: 4; the mass ratio of the carbon nano tube A to the ethanol water solution is 1: 12; the mass ratio of the added lignosulfonate to the carbon nano tube A is 10: 1; after the surfactant is added, the molar concentration of the surfactant is 0.2 mol/L.
The apparent color of the obtained carbon nanotube dispersion liquid was dark black, and the concentration was 3.2 g/L. The Zeta potential of the dispersion was determined to be-62.8 mV, and no precipitate was observed after centrifugation at 5000r/min for 20min using a centrifuge. The carbon nano tube dispersion liquid is proved to have better stability.
(4) And (3) putting the carbon nano tube dispersion liquid into a vacuum oven with the temperature of 80 ℃ for drying for 2.5 hours to obtain the carbon nano tube.
The original carbon nano tube has obvious thermal weight loss phenomenon from 515 ℃ to 625 ℃. The carbon nano tube treated by the method of the invention has obvious thermal weight loss phenomenon from 525 ℃ to 665 ℃.
Example 3
(1) 1 part by weight of carbon nanotubes was added to 20 parts by weight of water and subjected to ultrasonic treatment to obtain a dispersed suspension.
(2) Adding a certain amount of mixed acid into the suspension, heating to 110 ℃, performing ultrasonic treatment for 4h, cooling to room temperature, washing the carbon nanotube solution with deionized water for 2 times, soaking in absolute ethyl alcohol for 4h, filtering, and drying the carbon nanotube in an oven at 80 ℃ to obtain a carbon nanotube A;
the mixed acid is a mixed solution (volume ratio is 2:1) of concentrated nitric acid and sulfuric acid, and the molar concentration of the acid after the mixed acid is added into the suspension is 1.5 mol/L; the dosage of the deionized water is 1 time of the mass of the carbon nano tube solution each time.
(3) Adding the carbon nano tube A into an ethanol aqueous solution, fully and uniformly mixing, adding lignosulfonate (iron-chromium lignosulfonate with the molecular weight of 5000-10000), fully stirring, uniformly mixing, heating to 50 ℃, inoculating for 1h, adding a surfactant (CTAB), and uniformly mixing to obtain a stably dispersed carbon nano tube dispersion liquid;
the mixing ratio of ethanol and water in the ethanol water solution is 1: 3; the mass ratio of the carbon nano tube A to the ethanol water solution is 1: 10; the mass ratio of the added lignosulfonate to the carbon nano tube A is 9: 1; after the surfactant is added, the molar concentration of the surfactant is 0.3 mol/L.
The apparent color of the obtained carbon nanotube dispersion liquid was dark black, and the concentration was 3.0 g/L. The Zeta potential of the dispersion was determined to be-56.7 mV, and no precipitate was observed after centrifugation at 5000r/min for 20min using a centrifuge. The carbon nano tube dispersion liquid is proved to have better stability.
(4) And (3) putting the carbon nano tube dispersion liquid into a vacuum oven at 100 ℃ for drying for 1h to obtain the carbon nano tube.
The original carbon nano tube has obvious thermal weight loss phenomenon from 515 ℃ to 625 ℃. The carbon nano tube treated by the method of the invention has obvious thermal weight loss phenomenon from 530 ℃ to 670 ℃.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention; those skilled in the art can make various changes, modifications and alterations without departing from the scope of the invention, and all equivalent changes, modifications and alterations to the disclosed technology are equivalent embodiments of the present invention; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (6)
1. A method for improving the stability of carbon nanotubes is characterized by comprising the following steps:
(1) adding carbon nano tubes into water for ultrasonic treatment to obtain dispersed suspension;
(2) adding a certain amount of mixed acid into the suspension, heating to 90-110 ℃, performing ultrasonic treatment for 2-4h, cooling to room temperature, washing the carbon nanotube solution with deionized water for 2-3 times, soaking with absolute ethyl alcohol for 2-4h, filtering, and drying the carbon nanotube in an oven at 60-100 ℃ to obtain a carbon nanotube A;
(3) adding the carbon nano tube A into an ethanol water solution, fully and uniformly mixing, adding lignosulfonate, fully stirring, uniformly mixing, heating to 50-75 ℃, inoculating for 1-3h, adding a surfactant, and uniformly mixing to obtain a stably dispersed carbon nano tube dispersion liquid;
(4) and (3) putting the carbon nano tube dispersion liquid into a vacuum oven with the temperature of 60-100 ℃ for drying for 1-4h to obtain the carbon nano tube.
2. The method for improving the stability of the carbon nano tube according to claim 1, wherein the mixed acid in the step (2) is a mixed solution of concentrated nitric acid and sulfuric acid (volume ratio is 2:1), and the molar concentration of the acid after the mixed acid is added to the suspension is 0.5-1.5 mol/L.
3. The method of claim 1, wherein the ethylene glycol aqueous solution in the step (3) is formed by mixing 1 volume of ethylene glycol and 3-4 volumes of water; the mass ratio of the carbon nano tube A to the ethylene glycol aqueous solution is 1 (8-12).
4. The method of claim 1, wherein the surfactant in step (3) is one of cetyltrimethyl ammonium bromide (CTAB) and cetyltrimethyl ammonium chloride (CTAC).
5. The method for improving the stability of the carbon nano tube according to the claim 1, wherein the lignosulfonate in the step (3) is one or more of calcium lignosulfonate, sodium lignosulfonate and iron-chromium lignosulfonate; the molecular weight of the lignosulfonate is 5000-10000.
6. The method for improving the stability of the carbon nano tubes, according to the claim 1, characterized in that the mass ratio of the added lignosulfonate to the carbon nano tubes A in the step (3) is (8-10): 1; after the surfactant is added, the molar concentration of the surfactant is 0.1-0.3 mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911351454.2A CN111559742A (en) | 2019-12-25 | 2019-12-25 | Method for improving stability of carbon nano tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911351454.2A CN111559742A (en) | 2019-12-25 | 2019-12-25 | Method for improving stability of carbon nano tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111559742A true CN111559742A (en) | 2020-08-21 |
Family
ID=72074086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911351454.2A Pending CN111559742A (en) | 2019-12-25 | 2019-12-25 | Method for improving stability of carbon nano tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111559742A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534711A (en) * | 2019-12-25 | 2020-08-14 | 江西悦安新材料股份有限公司 | Preparation method of carbon nano tube composite material |
| CN112147197A (en) * | 2020-10-16 | 2020-12-29 | 山东理工大学 | Preparation method of electrochemical sensor based on three-dimensional porous covalent organic framework |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101049926A (en) * | 2007-05-15 | 2007-10-10 | 浙江大学 | Method for dispersing Nano carbon tubes |
| JP2009149516A (en) * | 2007-02-20 | 2009-07-09 | Toray Ind Inc | Carbon nanotube assembly and electrically conductive film |
| CN102557007A (en) * | 2011-05-20 | 2012-07-11 | 上海大学 | Method for separating carbon nanometer tubes by fractional extraction method |
| CN102627993A (en) * | 2012-03-20 | 2012-08-08 | 哈尔滨工业大学 | Preparation method of water-soluble graphene oxide-carbon nanotube extreme-pressure lubrication additive |
| WO2014149007A1 (en) * | 2013-03-18 | 2014-09-25 | Ustav Anorganickej Chemie Sav | Composite material with a homogeneous distribution of carbon nanotubes and a method for production of thereof j |
| CN105271175A (en) * | 2015-11-16 | 2016-01-27 | 中南大学 | Dispersion method of carbon nano tube |
| CN107326401A (en) * | 2017-05-22 | 2017-11-07 | 昆明理工大学 | A kind of preparation method of CNTs/Cu composite granules and CNTs/Cu composites |
| JP2018030770A (en) * | 2016-08-26 | 2018-03-01 | 浜田 晴夫 | Nanocarbon material dispersion method, nanocarbon material dispersion liquid, and nanocarbon material complex |
| CN107803182A (en) * | 2016-03-31 | 2018-03-16 | 烟台智本知识产权运营管理有限公司 | The preparation method of the CNT of metal ion/LDHs composites in a kind of absorption ultra-pure ammonia |
| CN108609611A (en) * | 2018-04-12 | 2018-10-02 | 华南理工大学 | The aqueous dispersions and preparation method thereof of the Environment-friendlycarbon carbon nanotube of high stability |
| CN110465209A (en) * | 2018-05-09 | 2019-11-19 | 天津工业大学 | A kind of polypyrrole-carbon nano-tube/poly ether sulfone composite conductive film and preparation method thereof |
-
2019
- 2019-12-25 CN CN201911351454.2A patent/CN111559742A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009149516A (en) * | 2007-02-20 | 2009-07-09 | Toray Ind Inc | Carbon nanotube assembly and electrically conductive film |
| CN101049926A (en) * | 2007-05-15 | 2007-10-10 | 浙江大学 | Method for dispersing Nano carbon tubes |
| CN102557007A (en) * | 2011-05-20 | 2012-07-11 | 上海大学 | Method for separating carbon nanometer tubes by fractional extraction method |
| CN102627993A (en) * | 2012-03-20 | 2012-08-08 | 哈尔滨工业大学 | Preparation method of water-soluble graphene oxide-carbon nanotube extreme-pressure lubrication additive |
| WO2014149007A1 (en) * | 2013-03-18 | 2014-09-25 | Ustav Anorganickej Chemie Sav | Composite material with a homogeneous distribution of carbon nanotubes and a method for production of thereof j |
| CN105271175A (en) * | 2015-11-16 | 2016-01-27 | 中南大学 | Dispersion method of carbon nano tube |
| CN107803182A (en) * | 2016-03-31 | 2018-03-16 | 烟台智本知识产权运营管理有限公司 | The preparation method of the CNT of metal ion/LDHs composites in a kind of absorption ultra-pure ammonia |
| JP2018030770A (en) * | 2016-08-26 | 2018-03-01 | 浜田 晴夫 | Nanocarbon material dispersion method, nanocarbon material dispersion liquid, and nanocarbon material complex |
| CN107326401A (en) * | 2017-05-22 | 2017-11-07 | 昆明理工大学 | A kind of preparation method of CNTs/Cu composite granules and CNTs/Cu composites |
| CN108609611A (en) * | 2018-04-12 | 2018-10-02 | 华南理工大学 | The aqueous dispersions and preparation method thereof of the Environment-friendlycarbon carbon nanotube of high stability |
| CN110465209A (en) * | 2018-05-09 | 2019-11-19 | 天津工业大学 | A kind of polypyrrole-carbon nano-tube/poly ether sulfone composite conductive film and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘宗建 等: ""碳纳米管在乙二醇水溶液中的分散性"", 《广东工业大学学报》 * |
| 叶晃青 等: ""不同分子量木质素磺酸钠对多壁碳纳米管分散性能的影响"", 《物理化学学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534711A (en) * | 2019-12-25 | 2020-08-14 | 江西悦安新材料股份有限公司 | Preparation method of carbon nano tube composite material |
| CN112147197A (en) * | 2020-10-16 | 2020-12-29 | 山东理工大学 | Preparation method of electrochemical sensor based on three-dimensional porous covalent organic framework |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109736092B (en) | Conductive polyaniline coated polyimide-based porous organic nano composite fiber membrane | |
| CN108232139A (en) | A kind of graphene composite material and preparation method thereof | |
| CN107393725A (en) | A kind of carbon material supported NiCo of porous, electrically conductive2O4Composite and its preparation method and application | |
| CN106206073B (en) | ZnO thin film Polymerization of Polyaniline/carbon Nanotube combination electrode material and preparation method thereof | |
| CN102321254A (en) | Preparation method for high-concentration graphene-polyaniline nanofiber composite dispersion liquid and high-concentration graphene-polyaniline nanofiber composite film | |
| CN108831757B (en) | A kind of preparation method of N and S codope graphene/carbon nano-tube aeroge | |
| CN106450174B (en) | Preparation method of graphene nanoribbon-lithium iron phosphate composite material | |
| CN105070924B (en) | A kind of DMFC molybdenum sulfide functionalized carbon nano-tube carries Pt catalyst and preparation method thereof | |
| CN104355334B (en) | There is superelevation birnessite type manganese oxide powder body than capacitance characteristic and preparation method and application | |
| CN102558586B (en) | Preparation method of polyethylene-vinyl acetate composite film | |
| CN106025228A (en) | Nanocomposite loading carbon-coated SnO2 nano particles on graphene sheets and preparation method of nanocomposite | |
| CN111559742A (en) | Method for improving stability of carbon nano tube | |
| CN109003826A (en) | N and S codope graphene-graphene nanobelt aeroge preparation method | |
| CN107482196B (en) | Composite nano material for lithium ion battery and preparation method thereof | |
| CN109860526A (en) | The preparation method of graphite type material doping metals oxalates lithium battery composite negative pole material | |
| CN112430352A (en) | Double-network cross-linked and coated polyaniline/multi-walled carbon nanotube composite conductive filler and preparation method thereof | |
| CN106910943A (en) | A kind of high-rate lithium battery manufacturing process | |
| CN106633047A (en) | Method for preparing polyaniline | |
| CN104637701A (en) | Method for preparing graphene-based vanadium pentoxide nanowire super capacitor electrode material | |
| CN106409520A (en) | Method for preparing electrode material of lithium-ion-mixed capacitor and application thereof | |
| CN113628892A (en) | Nitrogen and sulfur Co-doped graphene oxide grafted polythiophene-Co-pyrrole/Co3O4Preparation method of electrode material | |
| CN108321371A (en) | A kind of preparation method of silica and molybdenum trioxide composite positive pole | |
| CN104878406B (en) | A kind of electrochemical method for synthesizing of petal micrometer/nanometer structure polyaniline | |
| CN106374097A (en) | Preparation method of surface-controlled PANI-g-CNTs and NCM (Polyaniline-grafted-Carbon Nano Tubes and Nickel-Cobalt-Manganese) electrode material for lithium battery | |
| CN110627047A (en) | Preparation method of graphene/carbon nanotube/nickel disulfide composite aerogel |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200821 |