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Co@C@g-C3N4 nanometer composite and preparing method and application thereof

A nanocomposite, g-c3n4 technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of nanocomposite microwave absorption materials that have not been reported, and achieve excellent microwave absorption. Ability, conditions are simple, effects that are easy to control

Active Publication Date: 2016-10-26
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After retrieval, Co@C@g-C 3 N 4 Nanocomposite microwave absorbing materials have not been reported

Method used

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  • Co@C@g-C3N4 nanometer composite and preparing method and application thereof
  • Co@C@g-C3N4 nanometer composite and preparing method and application thereof
  • Co@C@g-C3N4 nanometer composite and preparing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Will figure 1 The upper cover 1 of the shown device is opened, and the cathode 2 is fixed on the chuck 8 with graphite. The anode target 4 consumed is a block pressed from pure cobalt powder and melamine powder (mass ratio 90:10). On the copper anode 7 passing through the cooling water, between the copper anode 7 and the anode target 4 is a graphite crucible 9 . A distance of 30 mm is maintained between the cathode 2 and the anode target 4 . Cover the upper cover 1 of the device, pass cooling water a, and after the whole working chamber is evacuated through the valve 3, argon gas b and methane gas c are introduced, the partial pressure of argon gas is 0.5MPa, and the partial pressure of methane gas is 0.3MPa , connect the DC pulse power supply 10, the voltage is 40V, adjust the working current and voltage to keep relatively stable during the arc discharge process, and Co@C@g-C 3 N 4 nanocomposites. The microstructure of the nanocomposite is Co@C core-shell nanocapsu...

Embodiment 2

[0034] Will figure 1The upper cover 1 of the shown device is opened, and the cathode 2 is fixed on the chuck 8 with graphite. The anode target 4 consumed is a block pressed from pure cobalt powder and melamine powder (mass ratio 70:30). On the copper anode 7 passing through the cooling water, between the copper anode 7 and the anode target 4 is a graphite crucible 9 . A distance of 30 mm is maintained between the cathode 2 and the anode target 4 . Cover the upper cover 1 of the device, pass cooling water a, and after the whole working chamber is evacuated through the valve 3, argon gas b and methane gas c are introduced, the partial pressure of argon gas is 0.5MPa, and the partial pressure of methane gas is 0.3MPa , connect the DC pulsating power supply 10, the voltage is 10V, adjust the working current and voltage to keep relatively stable during the arc discharge process, and Co@C@g-C 3 N 4 nanocomposites. The microstructure of the nanocomposite is Co@C core-shell nanoca...

Embodiment 3

[0036] Will figure 1 The upper cover 1 of the shown device is opened, and the cathode 2 is fixed on the chuck 8 with graphite. The anode target 4 consumed is a block pressed from pure cobalt powder and melamine powder (mass ratio 90:10). On the copper anode 7 passing through the cooling water, between the copper anode 7 and the anode target 4 is a graphite crucible 9 . A distance of 2 mm is maintained between the cathode 2 and the anode target 4 . Cover the upper cover 1 of the device, pass cooling water a, and after the whole working chamber is evacuated through the valve 3, argon gas b and methane gas c are introduced, the partial pressure of argon gas is 0.5MPa, and the partial pressure of methane gas is 0.3MPa , connect the DC pulsating power supply 10, the voltage is 20V, adjust the working current and voltage to keep relatively stable during the arc discharge process, and Co@C@g-C 3 N 4 nanocomposites. The microstructure of the nanocomposite is Co@C core-shell nanoca...

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Abstract

The invention discloses a Co@C@g-C3N4 nanometer composite and a preparing method and application thereof, and belongs to the technical field of nanometer material preparing. According to a nanometer composite material microscopic structure, a Co@C core-shell structure nanometer capsule is embedded in a g-C3N4 nanometer sheet. In the Co@C@g-C3N4 nanometer composite and the preparing method and application thereof, the plasma arc discharge method is adopted, and cobalt powder and melamine powder are pressed according to a certain atomic percent into a block to serve as an anode target material; graphite is adopted as a cathode material, argon and methane serve as working gas, a certain distance is kept between a cathode graphite electrode and the anode cobalt-melamine powder block, arc discharge is achieved between an anode and a cathode, and the Co@C@g-C3N4 nanometer composite is obtained. A microwave absorbing coating prepared through the nanometer composite has good microwave absorbing performance in the range of 2 GHz-18 GHz. The preparing process is simple, no later processing procedure is needed, cost is low, and industrial production is easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a Co@C@g-C 3 N 4 Nanocomposite microwave absorbing material and preparation method thereof. Background technique [0002] With the rapid development of modern science and technology, especially the electronic industry technology, the impact of electromagnetic wave radiation on the environment is increasing. After noise pollution, air pollution, and water pollution, electromagnetic wave pollution has become the fourth largest threat to the ecological environment and human health. public nuisance. Electromagnetic fields transmit energy in the form of electromagnetic waves. Usually, only by using electromagnetic wave absorbing materials to convert electromagnetic wave energy into heat or other forms of energy can electromagnetic pollution be effectively removed. In addition, absorbing materials are also widely used in military technology, such as electronic counterme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14B22F1/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/14B22F2999/00B22F1/054B22F1/17B22F2202/13
Inventor 刘先国李振兴潘正武孙玉萍
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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