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Method of using liquid-phase reduction method to prepare nano copper powder loaded graphene

A technology of nano copper powder and reduction method, applied in graphene, nano carbon, nano technology and other directions, can solve the problems of complex preparation method and high cost of graphene, and achieve the effects of low price, low cost and stable chemical properties

Inactive Publication Date: 2012-07-18
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems of complex and high-cost existing graphene preparation methods, and provides a method for preparing graphene-supported nano-copper powder materials by liquid phase reduction method

Method used

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  • Method of using liquid-phase reduction method to prepare nano copper powder loaded graphene
  • Method of using liquid-phase reduction method to prepare nano copper powder loaded graphene

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specific Embodiment approach 1

[0013] Specific embodiment one: the method for preparing graphene-supported nano-copper powder material by liquid phase reduction method in this embodiment is carried out according to the following steps: 1. Take graphite, add concentrated sulfuric acid with a mass concentration of 98%, and heat it at 0-4°C Stir for 30-50 minutes to obtain mixture A; 2. Add potassium permanganate to mixture A at 0-4°C and stir for 2-3 hours to obtain mixture B; 3. Put mixture B in a 33-36°C water bath for 10 ~12h, add distilled water to dilute again, the volume ratio of mixture B and distilled water is 1: 5~7, then add the hydrogen peroxide solution of mass concentration 30% and the dilute hydrochloric acid of mass concentration 5%, after cooling to room temperature, suction filtration, obtain solid, then add distilled water to the solid until the solid mass fraction is 0.7% to 1.0%, and then put it into a semipermeable membrane for dialysis treatment until neutral to obtain a sol; 4. Add disti...

specific Embodiment approach 2

[0014] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the graphite described in step 1 is natural flake graphite. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0015] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the ratio of graphite and concentrated sulfuric acid in step one is 1g: 42~43mL. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method of using a liquid-phase reduction method to prepare nano copper powder loaded graphene, which solves the problems of complexity and high cost of existing graphene preparation methods. The method includes: taking graphite, adding concentrated sulphuric acid and mixing to obtain a mixture A; adding potassium permanganate, bathing in water, adding distilled water for diluting, adding hydrogen peroxide solution and diluted hydrochloric acid, cooling to the room temperature, leaching to obtain solid, adding distilled water to the solid, and placing in a semipermeable membrane for dialyzing until neutral to obtain sol; adding distilled water into the sol, adding copper sulfate pentahydrate, ultrasonically mixing, sequentially adding hydrazine hydrate solution and NaOH solution, mixing, centrifuging to obtain the product, washing and drying to obtain the nano copper powder loaded graphene. The method is simple and low in cost, no surface dressing agent is needed, and metal particles on the surface of graphene are uniform in distribution and stable in chemical performance.

Description

technical field [0001] The invention relates to a method for preparing a graphene-supported nano-copper powder material by using a liquid phase reduction method. Background technique [0002] Graphene is a sp 2 The periodic honeycomb-shaped two-dimensional carbonaceous new material formed by the hexagonal arrangement of hybridized carbon atoms has a thickness of only 0.335nm and has attracted much attention since its discovery. Due to its unique thermal, mechanical, electrical and biocompatibility characteristics, graphene has great application prospects in the invention content of electronic transport devices, electrode capacitance devices, sensors and composite materials. The carrier mobility of graphene at room temperature is ten times that of ordinary silicon wafers, which is little affected by temperature and doping effects, and exhibits room temperature submicron-scale ballistic transport characteristics. This is the most prominent advantage of graphene as a nanoelec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00C01B31/04C01B32/184
Inventor 赵东宇王玉凤孙立国郭巧凤
Owner HEILONGJIANG UNIV
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