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A kind of porous carbon material of molybdenum disulfide compound nitrogen and its preparation method and application

A porous carbon material, molybdenum disulfide technology, applied in chemical instruments and methods, shielding materials, other chemical processes, etc., can solve the problems of weak absorption effect, poor electromagnetic wave performance, complicated preparation methods, etc., and achieve controllable morphology, Good absorbing properties, simple synthesis method

Active Publication Date: 2021-06-01
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The inventors found that the existing porous carbon absorbing materials have the disadvantages of complex preparation methods and poor performance in absorbing electromagnetic waves, and the existing materials have weak absorption effects on certain electromagnetic wave frequencies

Method used

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  • A kind of porous carbon material of molybdenum disulfide compound nitrogen and its preparation method and application
  • A kind of porous carbon material of molybdenum disulfide compound nitrogen and its preparation method and application
  • A kind of porous carbon material of molybdenum disulfide compound nitrogen and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Under the protection of an inert gas, the melamine sponge was heated to 900°C at a heating rate of 5°C / min, kept at a constant temperature for 1h, and then naturally cooled to room temperature to obtain carbon foam.

[0040] (2) Add 0.03g of carbon foam, 240mg of ammonium molybdate, and 480mg of thiourea into 80mL of water under continuous stirring; then put it into an oil bath and react at 100°C for 10h. After being naturally cooled to room temperature, the obtained product was separated from the solvent, washed with ethanol and deionized water for several times, and dried. Get MoS 2 Three-dimensional porous carbon materials complexed with nitrogen.

[0041] figure 1 Figure a in the figure is the MoS prepared in Example 1 2 SEM image of composite nitrogen-loaded three-dimensional porous carbon, figure 1 In Figure b, it can be seen that the prepared material has a three-dimensional network structure, and the surface has a two-dimensional nano-sheet structure, an...

Embodiment 2

[0043] The MoS prepared in Example 1 2 The nitrogen-complexed three-dimensional porous carbon material is mixed with paraffin wax at a mass ratio of 2:3, and the temperature during the mixing process is 50°C. Get MoS after stirring well 2 Three-dimensional porous carbon composite absorbing material with nitrogen complex.

Embodiment 3

[0045] Compared with Example 1, the calcination temperature of melamine in step (1) is 1000° C., and other conditions remain unchanged. Get MoS 2 Three-dimensional porous carbon materials complexed with nitrogen. Then prepare MoS according to the method of Example 2 2 Three-dimensional porous carbon composite absorbing material with nitrogen complex.

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Abstract

The invention relates to a porous carbon material composed of molybdenum disulfide and nitrogen, as well as its preparation method and application. It is a kind of porous carbon material, in which Mo, S, N elements are loaded, and Mo element and S element are compounded as MoS 2 supported in porous carbon, the porous carbon material has a three-dimensional network structure, and the surface of the three-dimensional network structure has MoS 2 Sheet structure. The preparation method is to roast melamine to obtain carbon foam, add molybdenum salt and sulfur source to water to obtain mixed solution A, immerse carbon foam in mixed solution A, and obtain MoS through hydrothermal reaction 2 Nitrogen-complex porous carbon materials. Combined with paraffin to obtain a wave-absorbing material, the electromagnetic wave loss is nearly ‑50dB.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave absorbing materials, and in particular relates to a porous carbon material composed of molybdenum disulfide and nitrogen, as well as its preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Electromagnetic pollution has brought serious harm to people's health. The environment around us is full of electromagnetic pollution. High-voltage power stations, signal base stations, mobile phones, microwave ovens, etc. are all sources of electromagnetic pollution. Moreover, electromagnetic pollution is becoming more and more serious with the popularization of e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00H05K9/00
CPCC09K3/00H05K9/0073H05K9/0081
Inventor 刘久荣吕龙飞吴莉莉刘伟汪宙王凤龙
Owner SHANDONG UNIV
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