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Preparation method for three-dimensional sulfurated graphene

A technology for vulcanizing three-dimensional graphene, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of few and limited reports of vulcanized three-dimensional graphene, and achieve easy mass production, simple steps, and material structure. Excellent performance

Inactive Publication Date: 2017-12-01
南陵县生产力促进中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the many graphene-based materials, graphene sulfide is expected to have some unique properties, but the reports in this area are still limited, and there are fewer reports on sulfide three-dimensional graphene.

Method used

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  • Preparation method for three-dimensional sulfurated graphene

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Weigh a certain amount of three-dimensional graphite, place it in a high-pressure horizontal tube furnace, and feed a mixed gas of CH4-H2S-Ar, the gas pressure is 2×10 5 Pa, where the partial pressure ratio of CH4:H2S:Ar is 15:55:30, the temperature of the tube furnace is raised to 1050°C, at this temperature, the three-dimensional graphene reacts with the gas for 5 hours, during the reaction, the sample position changes from 325nm UV light exposure;

[0018] 2) After the reaction is over, continue to pass the mixed gas of CH4-H2S-Ar, the total pressure is reduced to normal pressure, and naturally cooled to room temperature, and the sample is taken out to obtain the vulcanized three-dimensional graphene.

[0019] The sulfurized three-dimensional graphene prepared by the above preparation method was observed by scanning electron microscope, as shown in figure 1 The scanning electron microscope (SEM) figure of the sulfide three-dimensional graphene that is prepared f...

Embodiment 2

[0021] 1) Weigh a certain amount of three-dimensional graphite, place it in a high-pressure horizontal tube furnace, and feed a mixed gas of CH4-H2S-Ar, the gas pressure is 2×10 5 Pa, where the partial pressure ratio of CH4:H2S:Ar is 10:60:30, the temperature of the tube furnace is raised to 1050°C, at this temperature, the three-dimensional graphene reacts with the gas for 5 hours, during the reaction, the sample position changes from 325nm UV light exposure;

[0022] 2) After the reaction is over, continue to pass the mixed gas of CH4-H2S-Ar, the total pressure is reduced to normal pressure, and naturally cooled to room temperature, and the sample is taken out to obtain the vulcanized three-dimensional graphene.

[0023] The microscopic morphology of the sulfurized three-dimensional graphene prepared by the above preparation method was observed by a scanning electron microscope, which showed that the three-dimensional porous microstructure was basically the same as that of ...

Embodiment 3

[0025] 1) Weigh a certain amount of three-dimensional graphite, place it in a high-pressure horizontal tube furnace, and feed a mixed gas of CH4-H2S-Ar, the gas pressure is 2×10 5 Pa, where the partial pressure ratio of CH4:H2S:Ar is 20:50:30, the temperature of the tube furnace is raised to 1050°C, at this temperature, the three-dimensional graphene reacts with the gas for 5 hours, during the reaction, the sample position changes from 325nm UV light exposure;

[0026] 2) After the reaction is over, continue to pass the mixed gas of CH4-H2S-Ar, the total pressure is reduced to normal pressure, and naturally cooled to room temperature, and the sample is taken out to obtain the vulcanized three-dimensional graphene.

[0027] The microscopic morphology of the sulfurized three-dimensional graphene prepared by the above preparation method was observed through a scanning electron microscope, which showed a three-dimensional porous microstructure similar to that of the sulfurized th...

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Abstract

The invention discloses a preparation method for three-dimensional sulfurated graphene. The preparation method comprises the following steps: 1) weighing a certain amount of three-dimensional graphite, adding the three-dimensional graphite into a high-pressure horizontal tubular furnace, introducing a gas mixture of CH4-H2S-Ar, wherein the pressure intensity of the gas mixture is 1*10<5>, heating the tubular furnace to 1050 DEG C, and reacting the three-dimensional graphite with the gas mixture at 1050 DEG C for 5 h, wherein ultraviolet light with a wavelength of 325 nm is used for irradiation of a position where a sample is located in the process of the reaction; and 2) after completion of the reaction, continuing introduction of the gas mixture of CH4-H2S-Ar, allowing total pressure intensity to drop to atmospheric pressure, carrying out natural cooling to room temperature, and taking out the sample so as to obtain the three-dimensional sulfurated graphene. The three-dimensional sulfurated graphene prepared by using the method is such structured that two-dimensional layered structures are vertically arrayed and connected with each other to form a three-dimensional porous structure; layered graphene has a thickness of 10-20 nm; a pore diameter is 250-1000 nm; and uniform distribution is realized. The prepared three-dimensional sulfurated graphene has the advantages of intact three-dimensional structure, uniform size and even distribution. The preparation method is simple in steps and easy to realize mass production.

Description

technical field [0001] The invention relates to the field of graphene materials, especially the field of vulcanized three-dimensional graphene materials. Background technique [0002] Graphene is a single layer of carbon atoms with a graphite structure. Since it was first discovered in 2004, it has shocked the entire scientific community with its excellent properties and unique structure. Graphene is a honeycomb single-layer sheet material composed of carbon atoms in sp2 hybrid orbitals. There is a delocalized large π bond on graphene, and it is long-range, which lays the foundation for its good electrochemical properties. The unique structure of graphene endows it with extraordinary mechanical properties, thermal properties and electrical properties. Graphene is currently the hardest nanomaterial known; the thermal conductivity of graphene is about 5000 W / m K; due to the conjugated large π bond of graphene, its electrical properties are more attractive; it is The substan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184C01B32/194B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01P2004/03
Inventor 汪永辉
Owner 南陵县生产力促进中心