Self-supported reduced graphene oxide paper and preparation method thereof

A graphene paper, self-supporting technology, applied in the direction of graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of long time consumption, low yield, hindering the transfer and application of graphene film, etc., to achieve high purity and good mechanics performance effect

Active Publication Date: 2014-07-23
SHANGHAI LEVSON ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the graphene films prepared by these methods are difficult to peel off from substrate materials such as glass sheets, quartz sheets, and mica sheets, which hinders the transfer and further application of graphene films.
[0005] After searching the existing technologies, it was found that Professor Chen Xiaodong of Nanyang Technological University in Singapore wrote an article on pages 2972-2978 of Volume 23 of Advanced Functional Materials, and proposed that a self-supporting graphene honeycomb film was obtained by using the water-spreading technology, which can be transferred to any substrate. ability, their research opened the door to the feasibility of self-supporting graphene paper preparation, however, the preparation method is time-consuming, low yield, and poor controllability of size and thickness

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Embodiment 1

[0027] The self-supporting reduced graphene oxide paper preparation method of the embodiment of the present invention 1 comprises the following steps:

[0028] (a) At room temperature, disperse 600mg of graphite oxide in 600mL of water, then add 1.5g of sodium dodecylbenzenesulfonate, and obtain a graphite oxide dispersion with a concentration of 1mg / mL after ultrasonic treatment for 1 to 3 hours; Add 3 mL of hydrazine hydrate to the graphite oxide dispersion, heat the oil bath to 100°C, and react for 14 hours to obtain a black reduced graphene oxide suspension;

[0029] (b) Lower the reaction temperature in the oil bath to 80°C, add 7.31g of aminobenzoic acid and 3.15g of isoamyl nitrite to the reduced graphene oxide suspension obtained in step (a), and react in the oil bath for at least 10 hours to obtain Hydroxy-modified reduced graphene oxide dispersion;

[0030] (c) Suction filter the hydroxyl-modified reduced graphene oxide dispersion obtained in step (b), then wash the...

Embodiment 2

[0034] The self-supporting reduced graphene oxide paper preparation method of the embodiment of the present invention 2 comprises the following steps:

[0035] (a) At room temperature, disperse 300mg of graphite oxide in 600mL of water, then add 1.5g of sodium dodecylbenzenesulfonate, and obtain a graphite oxide dispersion with a concentration of 0.5mg / mL after ultrasonic treatment for 1 to 3 hours; Add 3 mL of hydrazine hydrate to the above graphite oxide dispersion, heat the oil bath to 100°C, and react for 14 hours to obtain a black reduced graphene oxide suspension;

[0036] (b) Lower the reaction temperature in the oil bath to 80°C, add 7.31g of aminobenzoic acid and 3.15g of isoamyl nitrite to the reduced graphene oxide suspension obtained in step (a), and react in the oil bath for at least 10 hours to obtain Hydroxy-modified reduced graphene oxide dispersion;

[0037] (c) Suction filter the hydroxyl-modified reduced graphene oxide dispersion obtained in step (b), then ...

Embodiment 3

[0041] The self-supporting reduced graphene oxide paper preparation method of the embodiment of the present invention 3 comprises the following steps:

[0042] (a) At room temperature, disperse 600mg of graphite oxide in 600mL of water, then add 6g of sodium dodecylbenzenesulfonate, and obtain a graphite oxide dispersion with a concentration of 1mg / mL after ultrasonic treatment for 1 to 3 hours; Add 3 mL of hydrazine hydrate to the graphite dispersion, heat the oil bath to 100°C, and react for 14 hours to obtain a black reduced graphene oxide suspension;

[0043] (b) Lower the reaction temperature in the oil bath to 80°C, add 7.31g of aminobenzoic acid and 3.15g of isoamyl nitrite to the reduced graphene oxide suspension obtained in step (a), and react in the oil bath for at least 10 hours to obtain Hydroxy-modified reduced graphene oxide dispersion;

[0044] (c) Suction filter the hydroxyl-modified reduced graphene oxide dispersion obtained in step (b), then wash the filtrate ...

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Abstract

The invention discloses a piece of self-supported reduced graphene oxide paper and a preparation method thereof. The preparation method comprises the following steps: reducing a graphene oxide solution, performing carboxylation treatment on the reduced graphene oxide, preparing carboxylated reduced graphene oxide solid powder, and making the self-supported reduced graphene oxide paper. The preparation method is simple and feasible, and can be used for on-scale preparation. The self-supported reduced graphene oxide paper prepared by using the preparation method is relatively good in mechanical property, high in purity, uniform, flat, controllable in thickness and shape, and good in development prospect in fields such as functional composite materials and super capacitors.

Description

technical field [0001] The invention relates to a graphene paper and a preparation method thereof, in particular to a self-supporting reduced graphene oxide paper and a preparation method thereof. Background technique [0002] Graphene, as a new material with a single-layer sheet structure composed of carbon atoms, has become the thinnest but hardest nanomaterial in the world since its discovery in 2004, and its strength is 200 times that of steel. In addition to being extremely strong, graphene is surprisingly flexible, stretching 20 percent without breaking. This makes it have great potential application prospects in functional composite materials, such as ultra-thin and ultra-light aircraft materials, ultra-light and ultra-tough body armor, etc. Graphene's excellent electrical conductivity, thermal conductivity and mechanical properties make it have broad application prospects in new energy fields such as composite materials, new electronic devices, solar cells, supercap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/184C01B32/194
Inventor 胡南滔张亚非张丽玲杨超杨志
Owner SHANGHAI LEVSON ENTERPRISE GRP
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