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Synthesis method of damascene metal nanoparticle graphene

A technology of nano-particles and metal embedding, which is applied in the field of one-step synthesis of metal nanoparticles embedded in graphene sheets, achieving excellent performance and simple and easy methods

Inactive Publication Date: 2014-07-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Nanoparticles can exhibit many excellent physical and chemical properties, such as adsorption, catalysis, energy storage, etc., due to their own scale at the nanometer level, but embedding nanoparticles into graphene layers is still a very challenging problem.

Method used

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  • Synthesis method of damascene metal nanoparticle graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Control the mass ratio of dicyandiamide and glucose to be 40:1, control the ratio of carbon in cobalt chloride and glucose to be 0.01%, dissolve the three with deionized water, evaporate to dryness at 75°C, and obtain the intermediate product in Under the condition of nitrogen protection, calcining at 700° C. to obtain the graphene material embedded with cobalt nanoparticles.

[0020] Such as figure 1 As shown, the X-ray diffraction pattern of the graphene material inlaid with the synthesized cobalt nanoparticles, it can be seen that the synthesized nanoparticles can be well aligned with the standard PDF card of Co, which proves that our nanoparticles are Co, not Oxides or carbides of Co.

[0021] Such as figure 2 As shown, the transmission electron microscope photo of the graphene material embedded with cobalt nanoparticles, it can be seen that the particle size distribution of the nanoparticles prepared by us is uniform, and the graphene sheet is relatively thin. ...

Embodiment 2

[0023] Control the mass ratio of dicyandiamide and glucose to be 40:1, control the ratio of carbon in cobalt chloride and glucose to be 0.01%, dissolve the three with deionized water, evaporate to dryness at 75°C, and obtain the intermediate product in Under the condition of nitrogen protection, calcining at 850° C. to obtain a graphene material embedded with cobalt nanoparticles.

Embodiment 3

[0025] Control the mass ratio of dicyandiamide and glucose to be 40:1, control the ratio of carbon in cobalt chloride and glucose to be 0.01%, dissolve the three with deionized water, evaporate to dryness at 75°C, and obtain the intermediate product in Under the condition of nitrogen protection, calcining at 1000° C. to obtain a graphene material embedded with cobalt nanoparticles.

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Abstract

The invention relates to a synthesis method of a damascene metal nanoparticle graphene. The synthesis method comprises the following steps: dissolving glucose, dicyandiamide and a corresponding metal salt in deionized water to obtain a mixed solution of a precursor; evaporating the mixed solution of the precursor to dryness at 75 DEG C, thereby obtaining a white powder solid; calcining under the protection of nitrogen in a calcination temperature range which is controlled in the range of 700-1200 DEG C; and finally, naturally cooling to obtain the damascene metal nanoparticle graphene product, wherein the mass ratio of the dicyandiamide to the glucose is 20: (1-40): 1, and the metal element in the metal salt accounts for 0.01wt%-60wt% of the carbon content in the glucose. Compared with the prior art, the synthesis method is simple in preparation process and only comprises one step of reaction; the synthesis method is outstanding in applicability and almost applicable to all transition elements (including but not limited to Fe, Co, Ni, Mo, Zn and Cu). Besides, the preparation process is green and environment-friendly without any toxic by-products.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials, in particular to a method for one-step synthesis of metal (including but not limited to Fe, Co, Ni, Mo, Zn, Cu) nanoparticles embedded in graphene sheets. Background technique [0002] Graphene, that is, single-layer graphite, has excellent electrical and thermal conductivity; because graphene is connected by carbon-carbon bonds, it has very high mechanical strength. Although graphene has many excellent properties, due to the limitations of the preparation method, it has many defects, so that its thermal conductivity cannot reach the theoretical high, because graphene has excellent electrical conductivity and can be used as a material for electronic devices, but It itself is a zero-bandgap substance, which in turn limits its use. How to use these excellent properties to prepare high-performance materials and devices has become a hot spot in the field of materials science. There are many w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/184
Inventor 李新昊吕利冰叶天南苏娟陈接胜
Owner SHANGHAI JIAO TONG UNIV
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