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Preparation method for in-situ synthesis three-dimensional graphene/one-dimensional carbon nanotube-supported copper nanoparticle material

A technology of in-situ synthesis of copper nanoparticles, applied in the direction of carbon nanotubes, graphene, nano-carbon, etc., can solve the problems of low crystallinity, low output, high production cost, etc., and achieve the effect of broad application prospects

Inactive Publication Date: 2019-12-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can effectively overcome the shortcomings of traditional graphene, carbon nanotubes and other carbon nanomaterials with low crystallinity, low yield and high production cost.

Method used

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  • Preparation method for in-situ synthesis three-dimensional graphene/one-dimensional carbon nanotube-supported copper nanoparticle material
  • Preparation method for in-situ synthesis three-dimensional graphene/one-dimensional carbon nanotube-supported copper nanoparticle material
  • Preparation method for in-situ synthesis three-dimensional graphene/one-dimensional carbon nanotube-supported copper nanoparticle material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Weigh 2 g of copper nitrate powder, 1 g of anhydrous glucose powder, and 36.5 g of anhydrous sodium chloride powder, dissolve them in 140 ml of deionized water, ultrasonicate them for 20 min, and stir them magnetically for 4 h to obtain a uniformly mixed solution.

[0023] The homogeneously mixed solution was placed in the freezer of the refrigerator for 72 hours. Freeze-dry the frozen samples in a lyophilizer. Freeze-drying temperature: -55°C, vacuum degree 8.6Pa, freeze-dry for 24 hours. The freeze-dried mixed powder is ground in a mortar to obtain the mixed powder. In order to avoid deliquescence of the mixed powder in the air, it is placed in a vacuum bag for sealed storage. The morphology of the freeze-dried precursor is as follows figure 1 shown.

[0024] The ground mixed powder was placed in a quartz ark, and then the quartz ark loaded with the mixed powder was placed in the constant temperature zone in the middle of the tube furnace, and the temperature was r...

Embodiment 2

[0027] Weigh 2 g of copper nitrate powder, 1 g of anhydrous glucose powder, and 36.5 g of anhydrous sodium chloride powder, dissolve them in 140 ml of deionized water, ultrasonicate them for 20 min, and magnetically stir for 2 h to obtain a uniformly mixed solution.

[0028] The homogeneously mixed solution was placed in the freezer of the refrigerator for 48 hours. Freeze-dry the frozen samples in a lyophilizer. Freeze-drying temperature: -55°C, vacuum degree 8.3Pa, freeze-dry for 24 hours. The freeze-dried mixed powder is ground in a mortar to obtain the mixed powder. In order to avoid deliquescence of the mixed powder in the air, it is placed in a vacuum bag for sealed storage.

[0029] The ground mixed powder was placed in a quartz ark, and then the quartz ark loaded with the mixed powder was placed in the constant temperature zone in the middle of the tube furnace, and the temperature was raised to 740 °C at a heating rate of 10 °C / min under a hydrogen atmosphere. The t...

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Abstract

The invention relates to a preparation method for an in-situ synthesis three-dimensional graphene / one-dimensional carbon nanotube-supported copper nanoparticle material. The preparation method comprises the following steps that (1), mixed solution preparation is performed, specifically, copper nitrate powder, anhydrous glucose powder and sodium chloride are fetched and dissolved in a certain amount of deionized water to obtain a uniform mixed solution; (2), freeze-drying is performed to obtain mixed powder; (3), in-situ synthesis of three-dimensional graphene is performed, specifically, the mixed powder obtained in the step(2) is placed into a quartz ark, then the quartz ark carrying the mixed powder is placed into a tube furnace middle portion constant temperature zone, the temperature israised to 730-750 DEG C in a hydrogen atmosphere, after heat preservation is performed for a while, hydrogen is closed, a mixed gas of acetylene and argon at a given flow rate is introduced in, the heat preservation is performed for a while again, the acetylene is closed, the furnace is cooled to room temperature in an argon atmosphere, and a Cu@GN / CNTs composite material taking the sodium chloride as a template is obtained; and (4), the sodium chloride template is removed.

Description

technical field [0001] The invention relates to a preparation method for in-situ synthesis of a three-dimensional graphene / one-dimensional carbon nanotube-loaded copper nanoparticle material by using a chemical vapor deposition method, and belongs to the technical field of nanomaterial preparation. Background technique [0002] Due to their excellent mechanical properties and thermophysical properties, carbon nanomaterials have gradually entered the field of scientific research in the past two decades. Carbon nanotubes and graphene are two high-profile star materials in the carbon nanomaterials family. In 1991, Japanese scholar Iijima first discovered carbon nanotubes (CNTs) in the process of arc discharge synthesis of fullerenes. Its structure can be regarded as a one-dimensional single-layer graphite sheet curled in a specific appropriate direction. The discovery of CNTs has also enabled scientific research to see the possibility of the existence of two-dimensional carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/22C01B32/16C01B32/186B82Y40/00
CPCB22F9/22B82Y40/00C01B32/16C01B32/186
Inventor 赵乃勤戎旭东师春生何春年何芳刘恩佐马丽颖
Owner TIANJIN UNIV