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Preparing method for three-dimensional nanometer porous graphene

A porous graphene, three-dimensional nanotechnology, which is applied in the field of preparation of nanomaterials, can solve the problems of easy agglomeration, enlarged pores, and enlarged three-dimensional nanoporous graphene pore size, and achieves a simplified process flow, low cost, and cost saving. Effect

Inactive Publication Date: 2016-01-06
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, nanoporous metals are very easy to agglomerate at high temperatures, causing the pores to become larger, which in turn causes the pore size of the obtained three-dimensional nanoporous graphene to become larger.

Method used

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  • Preparing method for three-dimensional nanometer porous graphene
  • Preparing method for three-dimensional nanometer porous graphene
  • Preparing method for three-dimensional nanometer porous graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] First, according to the sum of the atomic percentages of Cu and Mn being 100%, wherein Cu is 30% and Mn is 70%, the Cu and Mn blocks are put into a vacuum melting furnace to prepare a Cu-Mn alloy square ingot, and after wire cutting Process it into an alloy sheet with a thickness of 2mm, and then obtain an alloy foil with a thickness of 50um through repeated rolling-annealing-rolling processes. Then the rolled Cu 30 mn 70 Alloy foil cut into 1*1cm 2size, placed in 0.05M hydrochloric acid solution at room temperature and chemically dealloyed for 60 minutes to obtain a nanoporous copper foil, then the prepared nanoporous copper foil was first cleaned with deionized water, and then After cleaning with absolute ethanol, the clean nanoporous copper foil was vacuum-dried at room temperature for 12 hours. After the nanoporous copper is completely dried, put it into a quartz boat, place the quartz boat in the constant temperature zone in the middle of the reaction tube, rais...

Embodiment 2

[0035] First, according to the sum of the atomic percentages of Cu and Mn being 100%, wherein Cu is 30% and Mn is 70%, the Cu and Mn blocks are put into a vacuum melting furnace to prepare a Cu-Mn alloy square ingot, and after wire cutting Process it into an alloy sheet with a thickness of 2mm, and then obtain an alloy foil with a thickness of 100um through repeated rolling-annealing-rolling processes. Then the rolled Cu 30 mn 70 Alloy foil cut into 1*2cm 2 size, placed in 0.05M hydrochloric acid solution at room temperature for 120 minutes by chemical method for dealloying, so as to produce nanoporous copper foil, then the prepared nanoporous copper foil was first cleaned with deionized water, and then After cleaning with absolute ethanol, the clean nanoporous copper foil was vacuum-dried at room temperature for 12 hours. After the nanoporous copper is completely dried, put it into the quartz boat, place the quartz boat in the constant temperature zone in the middle of the...

Embodiment 3

[0037] First, according to the sum of the atomic percentages of Cu and Mn being 100%, wherein Cu is 30% and Mn is 70%, the Cu and Mn blocks are put into a vacuum melting furnace to prepare a Cu-Mn alloy square ingot, and after wire cutting Process it into an alloy sheet with a thickness of 2mm, and then obtain an alloy foil with a thickness of 50um through repeated rolling-annealing-rolling processes. Then the rolled Cu 30 mn 70 Alloy foil cut into 1*1cm 2 size, placed in 0.05M hydrochloric acid solution at room temperature and chemically dealloyed for 60 minutes to obtain a nanoporous copper foil, then the prepared nanoporous copper foil was first cleaned with deionized water, and then After cleaning with absolute ethanol, the clean nanoporous copper foil was vacuum-dried at room temperature for 12 hours. After the nanoporous copper is completely dried, put it into a quartz boat, place the quartz boat in the constant temperature zone in the middle of the reaction tube, rai...

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Abstract

The invention provides a preparing method for three-dimensional nanometer porous graphene. The preparing method includes the following steps that Cu-Mn alloy foil is prepared; dealloying treatment is carried out, and nanometer porous copper foil is obtained; the three-dimensional nanometer porous graphene is prepared, wherein the temperature rises to 200 DEG C to 400 DEG C in argon and hydrogen atmosphere, acetylene is introduced to grow hydrogenated graphite, the furnace temperature rises to 500 DEG C to 1,100 DEG C in hydrogen atmosphere, a quartz boat is rapidly moved to a temperature constant region in the middle of a reaction pipe to be roasted after the furnace temperature rises to the assigned temperature, the sample is cooled to the indoor temperature in hydrogen atmosphere after roasting is completed, the sample is immersed into corrosive fluid to remove nanometer porous copper, and a self-supporting three-dimensional nanometer porous graphene film is obtained after washing. According to the preparing method, the technological process is simple, cost is low, the pore sizes of the obtained three-dimensional nanometer porous graphene are even in distribution and are all in the nanometer level, and the obtained three-dimensional nanometer porous graphene is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation of nanomaterials, and in particular relates to a preparation method of three-dimensional nanoporous graphene. Background technique [0002] Nanoporous metal is a new type of nanoporous material system developed in recent years. It is composed of metal pore walls and pores at the nanoscale. It has the basic properties of metal bulk materials. Due to its unique structural properties, it is used in Many fields have been extensively studied. Compared with bulk dense metal materials, nanoporous metals have three-dimensional interconnected nanopores inside, and the pore structure can be adjusted at the atomic, molecular or nanoscale. It is a nanostructured macroscopic material. [0003] Nanoporous metal materials have the same small size effect, quantum size effect, surface effect and macroscopic quantum tunneling effect as other nanomaterials. The three-dimensional continuous porous structure endo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04
Inventor 赵乃勤秦凯强李家俊康建立刘恩佐师春生何春年
Owner TIANJIN UNIV
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