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Graphene oxide paper with surface microsphere structure and preparation method thereof

A graphene paper, graphene ball technology, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as limited application fields, difficult to control graphene oxide paper, etc., achieve high specific surface area, wide The effect of applying potential

Active Publication Date: 2020-04-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because most of the preparation processes are synthesized by self-assembly methods, it is difficult to effectively control the surface and internal structure of graphene oxide paper at the micro-nano scale, so as to obtain graphene oxide paper materials with specific functions or target structures; At the same time, the single surface topography structure and function also limit its application fields (such as patent number: 201410670784.9 and patent number: 201610374689.3)

Method used

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  • Graphene oxide paper with surface microsphere structure and preparation method thereof
  • Graphene oxide paper with surface microsphere structure and preparation method thereof
  • Graphene oxide paper with surface microsphere structure and preparation method thereof

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specific Embodiment approach 1

[0025] Specific embodiment one: what this embodiment records is a kind of graphene oxide paper with surface microsphere structure, and the upper surface of described graphene oxide paper is uniformly distributed with micron-scale graphene oxide balls, and the surface microscopic appearance is as follows figure 1 As shown, the microscopic morphology of graphene oxide spheres is as follows figure 2 As shown, and the bottom of the graphene oxide sphere and the graphene oxide paper below it are closely connected by graphene sheets, the microscopic appearance of the material section is as follows image 3 As shown, the interior of the graphene oxide sphere is a hollow structure.

specific Embodiment approach 2

[0026] Embodiment 2: The graphene oxide paper having a surface microsphere structure described in Embodiment 1, wherein the particle size distribution of the graphene oxide spheres is 2.3 μm˜2.8 μm.

specific Embodiment approach 3

[0027] Specific embodiment three: a graphene oxide paper with a surface microsphere structure described in specific embodiment one, the bottom is composed of graphene oxide paper composed of stacked graphene sheets, the thickness is 50-80 μm, and the surface has wrinkles. Among them, the graphene paper does not contain a microsphere structure inside, and the structure diagram is as follows Figure 4 shown.

[0028] Specific embodiment four: a kind of graphene oxide paper with surface microsphere structure described in specific embodiment one, the material components are all formed by graphene oxide sheet self-assembly stacking, the X-ray photoelectron spectroscopy analysis of the material ( XPS) characterization data such as Figure 5 shown.

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Abstract

The invention discloses graphene oxide paper with a surface microsphere structure and a preparation method thereof, which belong to the technical field of graphene oxide production. The micron-scale graphene oxide spheres are evenly distributed on the upper surface of the graphene oxide paper, the bottoms of the graphene oxide spheres are tightly connected with the graphene oxide paper on the lower portions of the graphene oxide spheres through graphene sheet layers, and the interiors of the graphene oxide spheres are of a hollow structure. The particle size distribution of the graphene oxidespheres is 2.3 [mu] m to 2.8 [mu] m. The bottom of the graphene oxide paper is formed by stacking graphene sheet layers, the thickness of the graphene oxide paper is 50-80 [mu] m, and wrinkles are formed on the surface of the graphene oxide paper. The micron-sized graphene oxide spheres are uniformly distributed on the surface of the prepared graphene oxide paper, and the unique structure endows the graphene oxide paper with higher specific surface area than common graphene oxide paper. By regulating and controlling the pH value and concentration of the graphene oxide dispersion liquid and thecontent of graphene oxide, the size and distribution of surface microspheres can be regulated and controlled at a micron scale.

Description

technical field [0001] The invention belongs to the technical field of graphene oxide production, and in particular relates to a graphene oxide paper with a surface microsphere structure and a preparation method thereof. Background technique [0002] An independent carbon-based membrane paper-like material composed of single-layer graphene oxide nanosheets self-assembled and stacked by directional filtration, high-temperature compression, etc. - graphene oxide paper / membrane, in protective layers, chemical filters, batteries or super Fields such as capacitor components, adhesive layers, electronic or optoelectronic components show great application potential. In addition, this unique macroscopic bulk material structure composed of two-dimensional micro-nano components stacked by interlocking layers has better stiffness and strength than many other similar paper-like materials. [0003] Since Dmitriy A. Dikin of Northwestern University in the United States first prepared gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/198
CPCC01B2204/20C01B32/198
Inventor 谭惠丰赵越王超隋超吴凡赵一凡
Owner HARBIN INST OF TECH
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