CN110976897B - Preparation method of carbon nanohorn metal composite material adopting alternating current - Google Patents
Preparation method of carbon nanohorn metal composite material adopting alternating current Download PDFInfo
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- CN110976897B CN110976897B CN201911297359.9A CN201911297359A CN110976897B CN 110976897 B CN110976897 B CN 110976897B CN 201911297359 A CN201911297359 A CN 201911297359A CN 110976897 B CN110976897 B CN 110976897B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/17—Metallic particles coated with metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/12—Making metallic powder or suspensions thereof using physical processes starting from gaseous material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
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- 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
- C01B32/18—Nanoonions; Nanoscrolls; Nanohorns; Nanocones; Nanowalls
Abstract
The invention relates to a preparation method of a carbon nanohorn metal composite material adopting alternating current, which comprises the following steps: providing two electrodes with top ends corresponding to each other, wherein the two electrodes are a graphite electrode and a metal electrode respectively; generating a stable alternating current arc between the two electrodes; the two electrodes are connected with an alternating current power supply of 10-1500A; the alternating current power supply is adopted to realize the alternate consumption of the two electrodes, and the reaction time of single preparation is prolonged; under the high temperature of the electric arc, the opposite surfaces of the graphite electrode and the metal electrode are evaporated together to generate carbon ions and metal particles, the carbon ions and the metal particles are coated with each other to form the carbon nanohorn technical composite material, and the alternating current electric arc enables the carbon particles and the metal particles to reciprocate between the two electrodes, so that the collision chance of the carbon ions and the metal particles is increased, and the yield of the carbon nanohorn metal composite material and the purity of a product are increased.
Description
Technical Field
The invention belongs to the technical field of carbon nanohorn metal composite materials, and particularly relates to a preparation method of a carbon nanohorn metal composite material adopting alternating current.
Background
With the development of social economy and science and technology, the application of carbon nanotechnology in production and life is more and more extensive, and the carbon nanotechnology is paid attention to due to the advantages of small volume, extremely high hardness degree and the like of products. The metal composite material is formed by fusing metal materials into a composite material in a metallurgical bonding mode by utilizing differences of chemical properties, multiple properties and mechanical properties or a composite technology.
The carbon nanotechnology is a scientific technology for researching the intrinsic movement characteristics and movement rules of electrons, molecules and atoms in a space with the scale of 11-100 nanometers and manufacturing equipment with specific functions by utilizing the performance and the rules, aims to manipulate atoms and manufacture machines or objects with the volume not more than 100 nanometers, and is mainly used in the fields of micro-electro-mechanical technology, medicine, material science, micro-electro-mechanical technology, radar information technology and the like. The carbon nanohorn is a nano material, and if the carbon nanohorn is fused with a metal composite material by a reasonable preparation process, great change can be brought to the metal composite material.
At present, a direct current arc discharge method is mostly adopted to prepare carbon nanohorns and load metal on the surfaces of the carbon nanohorns to prepare a carbon nanohorn metal composite material, only anodes in the direct current arc discharge method are consumed, and the yield of the prepared carbon nanohorns or carbon nanohorn metal composites is small.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a preparation method of a carbon nanohorn metal composite material adopting alternating current, thereby achieving the purpose of synchronously consuming a cathode and an anode.
The technical scheme of the invention is as follows:
a preparation method of a carbon nanohorn metal composite material adopting alternating current comprises the following steps:
providing two electrodes with top ends corresponding to each other, wherein the two electrodes are a graphite electrode and a metal electrode respectively;
a stable alternating current arc is generated between the two electrodes.
Furthermore, the two electrodes are connected with an alternating current power supply of 10-1500A.
Furthermore, the metal selected by the metal electrode is one or more of copper, tin, zinc, iron, aluminum, nickel, chromium, cobalt, molybdenum, silver and gold.
Further, the graphite electrode and the metal electrode are equal in diameter.
Further, both electrodes are in liquid nitrogen or liquid argon when an alternating arc occurs.
Further, the frequency of the alternating current is 50-6000 Hz. .
Compared with the prior art, the invention has the beneficial effects that:
the alternating current power supply is adopted to realize the alternate consumption of the two electrodes, and the reaction time of single preparation is prolonged; under the high temperature of the electric arc, the opposite surfaces of the graphite electrode and the metal electrode are evaporated together to generate carbon ions and metal particles, the carbon ions and the metal particles are mutually coated to form the carbon nanohorn technical composite material, the alternating current electric arc enables the carbon particles and the metal particles to reciprocate between the two electrodes, the collision chance of the carbon ions and the metal particles is increased, and therefore the yield of the carbon nanohorn metal composite material and the purity of a product are increased.
Detailed Description
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.
Example 1
A preparation method of a carbon nanohorn metal composite material adopting alternating current comprises the following steps:
providing two electrodes with top ends corresponding to each other, wherein the two electrodes are a graphite electrode and a metal electrode respectively;
a stable alternating current arc is generated between the two electrodes.
Further, the two electrodes were connected to an ac power supply of 1500A.
Furthermore, the metal selected by the metal electrode is one or more of copper, tin, zinc, iron, aluminum, nickel, chromium, cobalt, molybdenum, silver and gold.
Further, the graphite electrode and the metal electrode are equal in diameter.
Further, both electrodes are in liquid nitrogen or liquid argon when an alternating arc occurs.
Further, the frequency of the alternating current is 50-6000Hz, the effect is better when the frequency of the alternating current is higher, but the requirement on power supply equipment is higher when the frequency is higher.
Example 2
This example is another embodiment based on example 1, and the description of the same technical solution as example 1 will be omitted, and only the technical solution different from example 1 will be explained.
The graphite electrode and the metal electrode are arranged oppositelyIn a reaction chamber containing liquid nitrogen or liquid argon, at least one electrode is a movable electrode so as to adjust the distance between the two electrodes and generate stable electric arc, the two electrodes are connected with an alternating current power supply with the frequency of 50-6000Hz and the frequency of 10-1500A, so that the stable alternating current electric arc is generated between the two electrodes, the carbon nanohorn metal composite material generated in an arc area falls down and is deposited at the bottom of the reaction chamber, the bottom of the reaction chamber is funnel-shaped, a discharge hole is formed in the center of the reaction chamber and is controlled by a valve, the valve is automatically opened periodically to enable the carbon nanohorn metal composite material to flow out, an anode product is collected to a dust bag to obtain pure carbon nanohorn metal composite material, the purity of the obtained pure carbon nanohorn metal composite material is more than 99%, and the specific surface area is 1200m2The grain diameter is 2-3 mm.
Example 3
This example is another embodiment based on example 1, and the description of the same technical solution as in example 1 will be omitted, and only the technical solution different from example 1 will be explained.
Placing a graphite electrode and a copper electrode pair in a reaction chamber containing liquid nitrogen or liquid argon, wherein the diameters of the graphite electrode and the copper electrode are both 10mm, the graphite electrode is a movable electrode, the two electrodes are connected with an alternating current power supply with the frequency of 50Hz and the 1000A, so that stable alternating current electric arc is generated between the two electrodes, the carbon nanohorn copper composite material generated in an arc area falls down and deposits at the bottom of the reaction chamber, the bottom of the reaction chamber is funnel-shaped, a discharge hole is formed in the center of the reaction chamber, the discharge hole is controlled by a valve, the valve is periodically and automatically opened to enable the carbon nanohorn copper composite material to flow out, and collecting an anode product to a dust bag to obtain the pure carbon nanohorn copper composite material.
Example 4
This example is another embodiment based on example 1, and the description of the same technical solution as in example 1 will be omitted, and only the technical solution different from example 1 will be explained.
Placing a graphite electrode and a tin electrode pair in a reaction chamber containing liquid nitrogen or liquid argon, wherein the diameters of the graphite electrode and the tin electrode are both 10mm, the graphite electrode is a movable electrode, the two electrodes are connected with an alternating current power supply with the frequency of 100Hz and 800A, so that a stable alternating current arc is generated between the two electrodes, a carbon nanohorn tin composite material generated in an arc area falls down and deposits at the bottom of the reaction chamber, the bottom of the reaction chamber is funnel-shaped, a discharge hole is formed in the center of the reaction chamber, the discharge hole is controlled by a valve, the valve is periodically and automatically opened to enable the carbon nanohorn tin composite material to flow out, and collecting an anode product to a dust bag to obtain the pure carbon nanohorn tin composite material.
Example 5
This example is another embodiment based on example 1, and the description of the same technical solution as in example 1 will be omitted, and only the technical solution different from example 1 will be explained.
Placing a graphite electrode and a zinc electrode pair in a reaction chamber containing liquid nitrogen or liquid argon, wherein the diameters of the graphite electrode and the zinc electrode are both 10mm, the graphite electrode is a movable electrode, the two electrodes are connected with an alternating current power supply of 1500A and 2000Hz to generate stable alternating current arc between the two electrodes, the carbon nanohorn zinc composite material generated in an arc area falls down and deposits at the bottom of the reaction chamber, the bottom of the reaction chamber is funnel-shaped, a discharge hole is formed in the center of the reaction chamber and is controlled by a valve, the valve is periodically and automatically opened to enable the carbon nanohorn zinc composite material to flow out, and collecting an anode product to a dust bag to obtain the pure carbon nanohorn zinc composite material.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (2)
1. A preparation method of a carbon nanohorn metal composite material adopting alternating current is characterized by comprising the following steps:
providing two electrodes with top ends corresponding to each other, wherein the two electrodes are a graphite electrode and a metal electrode respectively, the metal electrode is zinc, the graphite electrode and the metal electrode have the same diameter, and the two electrodes are positioned in liquid nitrogen or liquid argon;
the two electrodes are connected with a 1500A alternating current power supply, and the frequency of the alternating current is 2000Hz-6000 Hz; a stable alternating current arc is generated between the two electrodes.
2. The method of preparing a carbon nanohorn metal composite using an alternating current according to claim 1, wherein: the resulting carbon nanohorn metal composite was collected by a dust bag.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11827518B1 (en) | 2023-04-27 | 2023-11-28 | Kunming University Of Science And Technology | Carbon nanohorns composite material with microwave absorption and tunable absorption bands and method for preparing the same |
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| CN110885073B (en) * | 2019-12-16 | 2023-03-24 | 河南英能新材料科技有限公司 | Preparation method of carbon nanohorn-silicon composite material |
| CN113695588B (en) * | 2021-08-30 | 2023-12-26 | 炭索未来(广东)生态环境科技有限公司 | High-activity zero-valent iron composite material and preparation method and application thereof |
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