Preparation method for copper nanoparticles wrapped with single-layer graphene and grown on porous carbon material

A single-layer graphene, porous carbon material technology, applied in metal material coating process, coating, gaseous chemical plating and other directions, can solve the problem of large particle size of copper particles, unsuitable for energy and environment fields, and serious graphene agglomeration and other problems to achieve the effect of improving the reaction efficiency

Active Publication Date: 2017-03-22
见嘉环境科技(苏州)有限公司
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Problems solved by technology

However, the size of the copper particles synthesized by it is large, and the graphene obtained by reducing graphene oxide is seriously agglomerated and has poor conductivity, which is not suitable for the application in the field of energy and environment, especially in the field of electrocatalysis.

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  • Preparation method for copper nanoparticles wrapped with single-layer graphene and grown on porous carbon material
  • Preparation method for copper nanoparticles wrapped with single-layer graphene and grown on porous carbon material
  • Preparation method for copper nanoparticles wrapped with single-layer graphene and grown on porous carbon material

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] The present invention proposes a method for growing single-layer graphene-wrapped copper nanoparticles on a porous carbon material, using three-dimensional graphene foam, porous carbon foam, or porous metal foam as a conductive substrate, and depositing it on the surface of the conductive substrate by chemical vapor deposition. Copper nanoparticles wrapped in single-layer graphene were grown.

[0020] as attached figure 1 Shown, its preparation method cooperates the concrete steps of preparation device to be:

[0021] (1) Load metal copper foam 11 or copper mesh with a large specific surface area in the tube furnace 1, heat up to 1000-1200°C to sublimate the copper, generate gasified copper atom gas flow, and pass it into the tube furnace 1 Hydrogen and methane streams mixed;

[0022] (2) After the mixed gas flow of copper a...

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Abstract

The invention relates to a preparation method for copper nanoparticles wrapped with single-layer graphene and grown on a porous carbon material. The preparation method comprises the steps that three-dimensional graphene foam, porous carbon foam or porous metal foam serves as a conductive substrate, and the copper nanoparticles wrapped with the single-layer graphene is grown out on the surface of the conductive substrate through the chemical vapor deposition method. According to the preparation method for the copper nanoparticles wrapped with the single-layer graphene and grown on the porous carbon material, the copper nanoparticles are wrapped with the single-layer graphene, and the reaction activity of the copper nanoparticles is maintained; at the same time, the monatomic thickness of the single-layer graphene is utilized, and it is possible that electrons penetrate through the single-layer graphene and react with pollutants; the particle sizes of the copper nanoparticles are 5-50 nm, thus, surface copper atom unsaturated bonds are increased, and the reaction efficiency is further improved; and meanwhile, atomic state copper atoms are adopted as reaction precursors, so that the design of catalysts at the atomic level is possible.

Description

technical field [0001] The invention relates to a preparation method of copper nanoparticles, in particular to a preparation method of growing single-layer graphene-wrapped copper nanoparticles on a porous carbon material, and belongs to the technical field of nanomaterials. Background technique [0002] Copper is widely distributed in nature and has abundant reserves. The catalytic performance of copper has many applications in the fields of energy and environment. Graphene is currently the thinnest but also the hardest nanomaterial in the world. It is almost completely transparent and only absorbs 2.3% of light; its thermal conductivity is as high as 5300W / m K, which is higher than that of carbon nanotubes and diamonds. The mobility exceeds 15000cm2 / V·s, which is higher than carbon nanotubes or silicon crystals, and the resistivity is only about 10-6Ω·cm, which is lower than copper or silver. It is the material with the smallest resistivity in the world. [0003] At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C16/44C23C16/30
Inventor 黄理志张玉龙
Owner 见嘉环境科技(苏州)有限公司
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