KR102532424B1 - Carbon nano material-nano metal complex and method for fabricating the same - Google Patents

Abstract

The present invention relates to a carbon nanomaterial-nanometal composite and a method for producing the same, in which an oxidizing agent and a carbon nanomaterial are mixed to form a dough through a kneading process, and a functional group capable of interacting with a metal salt is introduced into the surface of the carbon nanomaterial A functional group introduction step, a carbon nano material dispersion preparation step of preparing a carbon nano material dispersion by dispersing the functionalized carbon nano material in a reducing solvent, a metal precursor addition step of adding a metal precursor to the carbon nano material dispersion, and adding a reducing agent to It is a technical point to include a metal nanoparticle manufacturing step of manufacturing metal nanoparticles. As a result, a plurality of functional groups that interact with metal salts are introduced to the surface of the carbon nanomaterial, and metal grows therefrom to obtain a carbon nanomaterial-nanometal composite in which the carbon nanomaterial is impregnated into the metal nanoparticle.

Description

Carbon nanomaterial-nanometal complex and its manufacturing method {CARBON NANO MATERIAL-NANO METAL COMPLEX AND METHOD FOR FABRICATING THE SAME}

The present invention relates to a carbon nanomaterial-nanometal composite and a method for producing the same, and more particularly, by using an efficient oxidation process through kneading, a plurality of functional groups interacting with metal salts are introduced to the surface of the carbon nanomaterial, from which It relates to a carbon nanomaterial-nanometal composite in which metal is grown and the carbon nanomaterial is impregnated into metal nanoparticles, and a manufacturing method thereof.

In general, conductive carbon nanomaterials such as carbon nanotube (CNT), graphene, and carbon fiber are transparent electrodes, antistatic, electromagnetic wave shielding, energy generation and storage electrode materials, heat dissipation materials, It can be applied to various fields such as polymer composites, metal composites, ceramic composites, and conductive fibers. In order to coat these carbon nanomaterials or manufacture them in the form of fibers, a coating solution or spinning dope in the form of a dilute solution or a high-viscosity paste is required.

In general, dispersants such as surfactants, copolymer polymers, and ionic liquids are necessarily used to prepare coating solutions or pastes. Of course, if the functional group is excessively introduced to the surface of the material, dispersion is easy, but in this case, a problem of lack of conductivity occurs. Therefore, in the case of manufacturing a conductive coating liquid or paste using a conductive carbon nanomaterial while maintaining conductivity without using a dispersant, not only cost reduction but also simplification of the process can be achieved. In addition, since a dispersant is not required, it has the advantage of being possible to combine with various binder materials, metals, and metal oxides.

Techniques for introducing metal particles to improve the electrical conductivity of carbon nanomaterials have been reported, and the technology of hybridizing metal nanomaterials with carbon nanomaterials according to the prior art is 'Korean Intellectual Property Office Registration Patent No. 10-1410854 Multiple Hydrogen Bonds'. A highly conductive material formed by hybridizing a carbon nanomaterial and a metal nanomaterial having a higher order structure and a method for manufacturing the same are introduced. In this prior art, by introducing a functional group capable of multiple hydrogen bonds into a conductive carbon nanomaterial, a carbon nanomaterial having a higher order structure is formed by multiple hydrogen bonds between carbon nanomaterials, and a carbon nanomaterial and a metal nanomaterial having a higher order structure are formed. It is a material characterized in that a composite material is formed by simply mixing. However, this prior art has a disadvantage in that, although the dispersibility is excellent, the expression of excellent metal properties is somewhat insufficient because the carbon nano-material and the metal nano-material used as materials are individually distributed by bonding force.

As another prior art, 'Korean Intellectual Property Office Registration No. 10-0961914 Method for Manufacturing Carbon Nanotube Nanocomposites Decorated with Silver Nanoparticles' is introduced. This prior art includes a first step of making a carbon nanotube dispersion in which carbon nanotubes are dispersed in an organic solvent; a second step of attaching silver nanoparticles to the surface of the carbon nanotubes by mixing the carbon nanotube dispersion with a solution containing silver ions; It is characterized by having a; third step of applying a centrifugation and washing process to the result of the second step. However, in this prior art, silver ions are reduced to silver particles in the presence of carbon nanotubes to form a composite of silver nanoparticles and carbon nanotubes, but the shape of the silver particles is not continuous as spherical nanoparticles. It is not easy to apply to highly conductive electrodes using this. In addition, since silver particles are introduced into the functional groups of the carbon nanotubes, the dispersibility of the composite in the solvent is significantly reduced after the introduction of the silver particles, so there is a disadvantage in that a separate dispersing agent must be used.

On the other hand, 'Korean Intellectual Property Office Application No. 10-2014-0133501, a composite manufacturing method of silver particles and carbon nano materials' is introduced. This prior art is an invention characterized by introducing a functional group of a supramolecular structure into a carbon nanomaterial and applying it to the synthesis of silver particles to produce a composite having a controlled shape, and to manufacture a paste using the manufactured composite. However, this prior art can control the structure of silver particles in the form of a nanobelt, but has a problem in that the number of functional groups is limited to synthesize a structure impregnated with carbon nanotubes.

Korea Intellectual Property Office Registration Patent No. 10-1614837 Korea Intellectual Property Office Registration Patent No. 10-1265709 Korean Intellectual Property Office Application No. 10-2014-0133501

Therefore, an object of the present invention is to introduce a plurality of functional groups that interact with metal salts on the surface of carbon nanomaterials by using an efficient oxidation process through kneading, and from which metals grow, carbon nanomaterials are impregnated into metal nanoparticles. It is to provide a nanomaterial-nanometal composite and a manufacturing method thereof.

The present invention, which was devised to solve the technical problem, is a functional group introduction step of introducing a functional group capable of interacting with a metal salt on the surface of the carbon nano material in the form of a dough through a kneading process by mixing an oxidizing agent and a carbon nano material; A carbon nano material dispersion preparation step of preparing a carbon nano material dispersion by dispersing the functionalized carbon nano material in a reducing solvent; A metal precursor addition step of adding a metal precursor to the carbon nano material dispersion; and a step of preparing metal nanoparticles by adding a reducing agent to produce metal nanoparticles, wherein the metal nanoparticles are grown on the surface of the carbon nanomaterial by the functional group and the carbon nanomaterial is impregnated into the metal nanoparticles. It provides a method for manufacturing a carbon nanomaterial-nanometal composite in which the carbon nanomaterial is impregnated into metal nanoparticles.

The carbon nanomaterial is preferably selected from the group consisting of single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, carbon nanofibers, nanocarbon black, nanodiamonds, and mixtures thereof.

The metal precursor is a gold (Au) precursor, a silver (Ag) precursor, a platinum (Pt) precursor, a copper (Cu) precursor, an aluminum (Al) precursor, a palladium (Pd) precursor, a nickel (Ni) precursor, and a mixture thereof It is preferably selected from the group consisting of silver nitride (AgNO ₃ ), silver perchlorate (AgClO ₄ ), silver tetrafluoroborate (AgBF ₄ ), silver hexafluorophosphate (AgPF ₆ ), silver Acetate (CH ₃ COOAg), silver trifluoromethanesulfonate (AgCF ₃ SO ₃ ), silver sulfate (Ag ₂ SO ₄ ), silver 2,4-pentanedionate (CH ₃ COCH=COCH ₃ Ag) and mixtures thereof It can be selected from the group consisting of.

The reducing agent is sodium hydroxide (NaOH), potassium hydroxide (KOH), ammonium hydroxide (NH ₄ OH), sodium borohydride (NaBH ₄ ), hydrazine (N ₂ H ₄ ), hydriodine (HI), ascorbic acid, It is preferably selected from the group consisting of reducing organic solvents and mixtures thereof.

Here, the reducing agent may be added while adjusting the addition rate, and the reducing agent addition rate is 1 to 20 mL / min. Carbon nanomaterial impregnated in metal nanoparticles Carbon nanomaterial-nanometal composite production, characterized in that method.

On the other hand, in the kneading process, an oxidizing agent is mixed with the carbon nano material to form a mixed powder, a strong acid is mixed with the mixed powder, and the kneaded product is left to stand to proceed with an oxidation reaction, and a neutralization process and a purification process are performed. It may be a process of forming an oxidized carbon nanomaterial by removing an acid and an oxidizing agent through the process.

Here, the oxidizing agent is sodium chlorate (NaClO ₃ ), sodium chlorate salt, sodium perchlorate (NaClO ₄ ), sodium perchlorate salt, potassium chlorate (potassium chlorate, KClO ₃ ), potassium chlorate salt, potassium perchlorate (KClO 4 ) _{, potassium perchlorate salt, potassium permanganate (KMnO 4 )} , potassium permanganate salt , It is preferably selected from the group consisting of potassium nitrate (KNO ₃ ), potassium nitrate salt, sodium nitrate (NaNO ₃ ), sodium nitrate salt, and mixtures thereof, , The strong acid is concentrated nitric acid (fuming nitric acid), sulfuric acid (sulfuric acid), nitric acid (nitric acid), hydrochloric acid (hydrochloric acid), phosphoric acid (phosphoric acid), hydrogen peroxide (hydrogen peroxide), inorganic acid, acetic acid and It is preferably selected from the group consisting of mixed.

On the other hand, the carbon nanomaterial-nanometal composite according to the present invention may be a carbon nanomaterial-nanometal composite prepared by a method for manufacturing a carbon nanomaterial-nanometal composite in which metal nanoparticles are impregnated with the carbon nanomaterial according to the present invention. there is.

According to the configuration of the present invention described above, by using an efficient oxidation process through kneading, a plurality of functional groups that interact with metal salts are introduced to the surface of the carbon nano material, and the metal grows therefrom, resulting in a stable carbon nano material at high strain. A carbon nanomaterial-nanometal composite impregnated into nanoparticles can be obtained.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a flowchart of a method for manufacturing a carbon nanomaterial-nanometal composite according to an embodiment of the present invention.
Figure 2 is a schematic view of the growth of the metal nanoparticles of the present invention on the surface of the oxidized carbon nano material and a schematic diagram of a composite in which the carbon nano material is impregnated into the nano metal.
3 is a scanning electron microscope image of a silver nanoparticle composite in which carbon nanotubes are impregnated.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims described below. And, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

Hereinafter, a carbon nanomaterial-nanometal composite and a manufacturing method thereof according to an embodiment of the present invention will be described in detail with reference to drawings.

Here, FIG. 1 is a flow chart of a method for manufacturing a carbon nanomaterial-nanometal composite according to an embodiment of the present invention, and FIG. 2 is a schematic diagram showing the growth of metal nanoparticles of the present invention on the surface of an oxidized carbon nanomaterial and the carbon nanomaterial It is a schematic diagram of a composite impregnated with nano-metal, and FIG. 3 is a scanning electron microscope image of a composite of silver nanoparticles impregnated with carbon nanotubes.

First, as shown in FIG. 1, a functional group capable of interacting with a metal salt is introduced to the surface of the carbon nano material in the form of dough through a kneading process by mixing an oxidizing agent and a carbon nano material (S1).

Here, the carbon nanomaterial may be selected from the group consisting of single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, carbon nanofibers, nanocarbon black, nanodiamond, and mixtures thereof, but one aspect of the present invention In an embodiment, it will be described below as a single-walled carbon nanotube.

In general, carbon nanomaterials are surface-modified to introduce functional groups that react with metal salts. Different methods may be used for surface modification of the carbon nanomaterial depending on the type of the carbon nanomaterial.

In the present invention, it is possible to introduce a plurality of functional groups that interact with metal salts through an efficient oxidation process of the kneaded material through the kneading process.

More specifically, in the kneading process, an oxidation reaction is performed by mixing an oxidizing agent with an oxidizing carbon nano material to form a mixed powder, mixing a strong acid with the mixed powder and leaving the kneaded product to stand, and proceeding with an oxidation reaction through a neutralization process and a purification process. It may be a process of forming an oxidized carbon nanomaterial through a process of removing an acid and an oxidizing agent.

A carbon nanomaterial to be oxidized and an oxidizing agent for oxidizing the carbon nanomaterial are prepared, respectively, and mixed to form a mixed powder. Since the carbon nanomaterial and the oxidizer each exist in a powder state, they do not react with each other even if they are mixed to form a mixed powder.

Here, the oxidizing agent is sodium chlorate (NaClO ₃ ), sodium chlorate salt, sodium perchlorate (NaClO ₄ ), sodium perchlorate salt, potassium chlorate (KClO ₃ ), potassium chlorate salt, potassium perchlorate (KClO ₄ ), potassium perchlorate salt, potassium permanganate (KMnO ₄ ), potassium permanganate salt, nitric acid It is preferably selected from the group consisting of potassium nitrate (KNO ₃ ), potassium nitrate salt, sodium nitrate (NaNO ₃ ), sodium nitrate salt, and mixtures thereof. In addition, the oxidizing agent is preferably added in a weight ratio of 0.1 to 10 based on the weight of the carbon nanomaterial. When the oxidizing agent is less than 0.1 weight ratio, the single-walled carbon nanotubes are not sufficiently oxidized, and when the oxidizing agent is greater than 10 weight ratio, many defects occur on the surface of the carbon nanomaterial due to excessive oxidation.

Subsequently, kneading is performed while adding strong acid to the mixed powder in which the carbon nanomaterial and the oxidizing agent are mixed. When strong acid is added to the mixed powder, the strong acid dissolves the oxidizing agent on the surface of the carbon nanomaterial and reacts explosively at a very high speed. As a result, high-temperature heat is generated. It is preferable to perform kneading while adding to. In this way, since the reaction occurs explosively by adding strong acid to the mixed powder, the reaction time is much shorter than in the case where the reaction is performed by stirring in the mixed solution as in the prior art, and even if only a small amount of strong acid is used, carbon oxide nanomaterials It has the advantage of being easily formed.

Here, the strong acids include fuming nitric acid, sulfuric acid, nitric acid, hydrochloric acid, phosphoric acid, hydrogen peroxide, inorganic acids, acetic acids, and mixtures thereof. It is preferably selected from the group consisting of

After adding strong acid to the mixed powder, the kneaded non-flowable kneaded product is left to oxidize to form an oxide carbon nano material. Here, it is preferable to leave it for 30 minutes to 10 hours. That is, even if the kneaded product is left as it is without separate treatment, the carbon nano-material in the kneaded product is oxidized to obtain an oxidized carbon nano-material.

Acids and oxidizing agents are removed through neutralization and purification processes to form oxide carbon nanomaterials. In other words, the carbon nanomaterial is neutralized by using distilled water, hydrochloric acid, and hydrogen peroxide on the dough oxidized through leaving, and then the acid and oxidizing agent are removed through washing, filtration, and drying to obtain the oxidized carbon nanomaterial. there is.

If necessary, a drying process using a freeze dryer may be performed to obtain carbon oxide nano material powder, and various methods other than the described method may be applied to this process, and the method is not particularly limited.

Through this efficient oxidation process, it is possible to introduce a number of functional groups that can interact with metal salts used in metal synthesis, such as hydroxyl groups, on the surface of carbon nanomaterials.

Here, a functional group, also called a functional group or a functional group, means an atomic group or bonding pattern that causes the characteristic in a group of organic compounds having common chemical properties. In the present invention, if the functional group is formed to be able to interact with the metal salt in the carbon nanomaterial, the type is not limited to the present embodiment and may be various.

Metal nanoparticles grow on the surface of the carbon nanomaterial oxidized through such a plurality of functional groups, thereby producing a composite in which the carbon nanomaterial is impregnated with the metal nanoparticle.

A carbon nanomaterial dispersion is prepared by dispersing the functionalized carbon nanomaterial in a reducing solvent (S2).

Here, the reducing solvent is a polar solvent capable of dissolving a metal salt, and any reducing solvent that is commonly used as a solvent can be applied without limitation.

Subsequently, a metal precursor is added to the carbon nanomaterial dispersion (S3).

The metal precursor consists of a gold (Au) precursor, a silver (Ag) precursor, a platinum (Pt) precursor, a copper (Cu) precursor, an aluminum (Al) precursor, a palladium (Pd) precursor, a nickel (Ni) precursor, and a mixture thereof. It is preferably selected from the group, and is applicable without limitation to nanometal particles that can be prepared using a precursor, and in one embodiment of the present invention, it will be described based on being a silver precursor.

Here, the silver precursor is silver nitride (AgNO ₃ ), silver perchlorate (AgClO ₄ ), silver tetrafluoroborate (AgBF ₄ ), silver hexafluorophosphate (AgPF ₆ ), silver acetate (CH ₃ COOAg), silver trifluoromethanesulfonate (AgCF ₃ SO ₃ ), silver sulfate (Ag ₂ SO ₄ ), silver 2,4-pentanedionate (CH ₃ COCH=COCH ₃ Ag), and mixtures thereof. .

Finally, a reducing agent is added to prepare metal nanoparticles (S4).

The reducing agent is sodium hydroxide (NaOH), potassium hydroxide (KOH), ammonium hydroxide (NH ₄ OH), sodium borohydride (NaBH ₄ ), hydrazine (N ₂ H ₄ ), hydriodine (HI), ascorbic acid, reducing It is preferably selected from the group consisting of organic solvents and mixtures thereof.

Here, the reducing agent can be added while adjusting the addition rate. When adding a reducing agent, since the addition rate is very important, it is added while controlling the addition rate of the reducing agent. For example, if a reducing agent is added at a high rate, metal particles grow into particles in the solution phase before growing on the surface of the carbon nanomaterial, making it difficult to obtain a structure in which the carbon nanomaterial is impregnated with the metal. If the reducing agent is added too slowly, the metal particles size may be too large. When the addition rate is less than 0.1ml/min, a lot of manufacturing time is required, resulting in low productivity, and when it exceeds 0.3ml/min, the reactivity between the carbon nanomaterial and the metal salt precursor is increased to obtain metal particles. Therefore, in the present invention, the reducing agent addition rate is preferably 1 to 20 ml / min.

Such a method for manufacturing a carbon nanomaterial-nanometal complex introduces a plurality of functional groups that interact with metal salts on the surface of a carbon nanomaterial by using an efficient oxidation process through kneading, and a metal is grown therefrom to form a carbon nanomaterial. A carbon nanomaterial-nanometal composite impregnated into a particle can be manufactured, and thus it can have stable electrical properties at high strain.

Using this, it can be used as a very useful conductive filler for stretchable electrodes, and can be used for stretchable printed electrodes, stretchable conductive fibers, and sensors for electronic skin.

Hereinafter, embodiments of the present invention will be described in more detail.

<Example>

First, 1 g of single-walled carbon nanotubes and 10 g of sodium chlorate (NaClO ₃ ) were mixed in a powder state, mixed with 20 mL of fuming nitric acid, kneaded, and left for 5 hours to oxidize proceed the reaction. After neutralizing the single-walled carbon nanotubes using distilled water, hydrochloric acid, and hydrogen peroxide, acid and oxidizing agents are removed through washing, filtration, and drying to obtain oxidized single-walled carbon nanotubes. If necessary, a drying process using a lyophilizer is performed to obtain oxidized single-walled carbon nanotube powder.

Possible carbon nanomaterials include single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, carbon nanofibers, nanocarbon black, and nanodiamonds. Carbon nanomaterials do not interact with silver ions or silver particles. A possible functional group is introduced, and the functional group-introduced carbon nanomaterial is added during the synthesis of silver particles, so that the silver particles grow from the surface of the carbon nanomaterial, and finally a silver composite material impregnated with the carbon nanomaterial as shown in FIG. 2(b) is to synthesize

Here, FIG. 2(a) is a schematic diagram showing that silver nanoparticles 10 nucleated on the surface of carbon nanotubes grow on the surface of oxidized single-walled carbon nanotubes 20, and FIG. 2(b) shows the final growth of silver nanoparticles. It is a schematic diagram showing a composite having a structure in which carbon nanotube bundles 40 are combined into silver particles 30 by growth.

For the synthesis of silver particle-single-walled carbon nanotube composites, 0.5 g AgNO ₃ was dissolved in 150 mL of oxidized single-walled carbon nanotube dispersion dispersed at 10 to 500 mg/L to obtain a single-walled carbon nanotube dispersion containing silver precursor. manufacture Then, silver nanoparticles were synthesized by adding 50 mL aqueous solution of 0.5 wt % NaBH ₄ at a rate of 10 mL/min while stirring.

As shown in FIG. 3, it was possible to synthesize a composite material having a structure in which single-walled carbon nanotubes are synthesized inside silver particles, and when the concentration of carbon nanotubes is increased, a site that can act as a nucleating agent for silver particles to grow As the number increased, smaller silver particles were formed.

As described above, the carbon nanomaterial-nanometal composite in which metal nanoparticles are impregnated with the carbon nanomaterial according to the present invention and the method for manufacturing the same are based on the interaction of the metal salt on the surface of the carbon nanomaterial using an efficient oxidation process through kneading. A plurality of functional groups may be introduced, and metals may be grown therefrom to prepare a carbon nanomaterial-nanometal composite in which metal nanoparticles are impregnated with carbon nanomaterials, and thus may have stable electrical properties at high strain. In addition, it can be used as a very useful conductive filler for stretchable electrodes, and can be used for stretchable printed electrodes, stretchable conductive fibers, and sensors for electronic skin.

Claims (11)

A functional group introduction step of introducing a functional group capable of interacting with a metal salt on the surface of the carbon nano material in the form of a dough through a kneading process by mixing an oxidizing agent and a carbon nano material;
A carbon nano material dispersion preparation step of preparing a carbon nano material dispersion by dispersing the functionalized carbon nano material in a reducing solvent;
A metal precursor addition step of adding a metal precursor to the carbon nano material dispersion; and
A metal nanoparticle manufacturing step of preparing metal nanoparticles by adding a reducing agent; including,
The metal nanoparticles are grown on the surface of the carbon nanomaterial by the functional group and the carbon nanomaterial is impregnated into the metal nanoparticles. manufacturing method. According to claim 1,
The carbon nanomaterial,
Metal nanoparticles are impregnated with a carbon nanomaterial selected from the group consisting of single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, carbon nanofibers, nanocarbon black, nanodiamonds, and mixtures thereof. Carbon nanomaterial-nanometal composite manufacturing method. According to claim 1,
The metal precursor,
A gold (Au) precursor, a silver (Ag) precursor, a platinum (Pt) precursor, a copper (Cu) precursor, an aluminum (Al) precursor, a palladium (Pd) precursor, a nickel (Ni) precursor, and a mixture thereof. A method for producing a carbon nanomaterial-nanometal composite in which a carbon nanomaterial is impregnated into metal nanoparticles. According to claim 3,
The silver precursor,
Silver Nitride (AgNO ₃ ), Silver Perchlorate (AgClO ₄ ), Silver Tetrafluoroborate (AgBF ₄ ), Silver Hexafluorophosphate (AgPF ₆ ), Silver Acetate (CH ₃ COOAg), Silver Trifluoromethanesulfonate (AgCF ₃ SO ₃ ), silver sulfate (Ag ₂ SO ₄ ), silver 2,4-pentanedionate (CH ₃ COCH=COCH ₃ Ag), and a carbon nanomaterial characterized in that it is selected from the group consisting of a mixture thereof A method for manufacturing a carbon nanomaterial-nanometal composite impregnated with metal nanoparticles. According to claim 1,
The reducing agent,
Sodium hydroxide (NaOH), potassium hydroxide (KOH), ammonium hydroxide (NH ₄ OH), sodium borohydride (NaBH ₄ ), hydrazine (N ₂ H ₄ ), hydriodin (HI), ascorbic acid, reducing organic solvent and A method for producing a carbon nanomaterial-nanometal composite in which metal nanoparticles are impregnated with a carbon nanomaterial selected from the group consisting of mixtures thereof. According to claim 1,
The reducing agent,
A method for producing a carbon nanomaterial-nanometal composite in which metal nanoparticles are impregnated with a carbon nanomaterial, characterized in that the addition is performed while adjusting the addition rate. According to claim 6,
The method for producing a carbon nanomaterial-nanometal composite in which the carbon nanomaterial is impregnated into the metal nanoparticle, characterized in that the reducing agent addition rate is 1 to 20 mL/min. According to claim 1,
The kneading process,
An oxidizing agent is mixed with the carbon nanomaterial to form a mixed powder, a strong acid is mixed with the mixed powder and kneaded, and the kneaded product is allowed to proceed with an oxidation reaction, and the acid and oxidizing agent are removed through a neutralization process and a purification process to oxidize the mixture. A method for producing a carbon nanomaterial-nanometal composite in which a carbon nanomaterial is impregnated into metal nanoparticles, characterized in that the carbon nanomaterial is formed. According to claim 8,
The oxidizing agent,
Sodium chlorate (NaClO ₃ ), sodium chlorate salt, sodium perchlorate (NaClO ₄ ), sodium perchlorate salt, potassium chlorate (KClO ₃ ), potassium chlorate Potassium chlorate salt, potassium perchlorate (KClO ₄ ), potassium perchlorate salt, potassium permanganate (KMnO ₄ ), potassium permanganate salt, potassium nitrate , KNO ₃ ), potassium nitrate salt (potassium nitrate salt), sodium nitrate (NaNO ₃ ), sodium nitrate salt (sodium nitrate salt) and a mixture thereof characterized in that the carbon nanomaterial is selected from the metal A method for manufacturing a carbon nanomaterial-nanometal composite impregnated into nanoparticles. According to claim 8,
The strong acid,
from the group consisting of fuming nitric acid, sulfuric acid, nitric acid, hydrochloric acid, phosphoric acid, hydrogen peroxide, inorganic acids, acetic acids and mixtures thereof A method for producing a carbon nanomaterial-nanometal composite in which the selected carbon nanomaterial is impregnated into metal nanoparticles. A carbon nanomaterial-nanometal composite prepared by the method of any one of claims 1 to 10.

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