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Preparing method for sulfur-doped graphene

A technology of sulfur-doped graphene and graphene, applied in the field of preparation of sulfur-doped graphene, can solve the problems of high equipment requirements, high reaction temperature, extremely toxic raw materials, etc., and achieves low reaction temperature, simple equipment, and production cost. low effect

Active Publication Date: 2016-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the prior art has the problems of high reaction temperature for preparing sulfur-doped graphene, high equipment requirements, extremely poisonous raw materials, and low yield. A new method for preparing sulfur-doped graphene is provided

Method used

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  • Preparing method for sulfur-doped graphene
  • Preparing method for sulfur-doped graphene
  • Preparing method for sulfur-doped graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 300 mg of graphite oxide was ultrasonically stripped in 100 ml of deionized water for 1.5 hours to prepare a 3 mg / ml graphene oxide solution, and then 3 g of sodium sulfide was added to it, dispersed and mixed evenly by ultrasonication for 15 minutes, and hydrothermally reacted at 200°C for 15 hours , after cooling, wash with deionized water to remove excess sulfur-containing compounds, and obtain sulfur-doped graphene, wherein the atomic percentage of sulfur is 1.17%.

[0028] The obtained sulfur-doped graphene X-ray diffraction spectrum (XRD) figure, scanning electron microscope (SEM) figure, transmission electron microscope (TEM) figure, and X-ray photoelectron spectrum (XPS) figure see accompanying drawing, show that sulfur atom Already replaced carbon atoms into the graphene lattice.

Embodiment 2

[0030] 50 mg of graphite oxide was ultrasonically stripped in 100 ml of deionized water for 1 hour to prepare a 0.5 mg / ml graphene oxide solution, and then 2.5 g of sodium sulfide was added to it, dispersed and mixed evenly by ultrasonication for 10 minutes, and hydrothermally reacted at 180°C for 20 hours , after cooling, wash with deionized water to remove excess sulfur-containing compounds, and obtain sulfur-doped graphene, wherein the atomic percentage of sulfur is 0.94%.

[0031] The obtained sulfur-doped graphene X-ray diffraction spectrum (XRD) figure, scanning electron microscope (SEM) figure, transmission electron microscope (TEM) figure, and X-ray photoelectron spectrum (XPS) figure are similar to [embodiment 1] .

Embodiment 3

[0033] 500 mg of graphite oxide was ultrasonically stripped in 100 ml of deionized water for 2 hours to prepare a 5 mg / ml graphene oxide solution, and then 0.5 g of sodium sulfide was added to it, dispersed and mixed evenly by ultrasonication for 10 minutes, and hydrothermally reacted at 210°C for 8 hours , after cooling, wash with deionized water to remove excess sulfur-containing compounds, and obtain sulfur-doped graphene, wherein the atomic percentage of sulfur is 0.81%.

[0034] The obtained sulfur-doped graphene X-ray diffraction spectrum (XRD) figure, scanning electron microscope (SEM) figure, transmission electron microscope (TEM) figure, and X-ray photoelectron spectrum (XPS) figure are similar to 【Example 1】 .

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Abstract

The invention relates to a preparing method for sulfur-doped graphene to mainly solve the problems that in the prior art, the preparing reaction temperature of sulfur-doped graphene is high, the requirement for equipment is high, raw materials are extremely poisonous, and productivity is low. The preparing method comprises the following steps that firstly, oxidized graphite is subjected to ultrasonic exfoliation in a solvent, and an oxidized graphene solution is obtained; secondly, the oxidized graphene solution and a sulfur compound are mixed and subjected to ultrasonic treatment to be dispersed and mixed evenly, and a mixture is obtained; thirdly, the mixture is subjected to a hydrothermal reaction, and the sulfur-doped graphene is obtained. The problems are well solved though the technical scheme, and the preparing method can be used for the industrial production of sulfur-doped graphene.

Description

technical field [0001] The invention relates to a preparation method of sulfur-doped graphene. Background technique [0002] Graphene is made of carbon atoms with sp 2 The two-dimensional crystal material with a hexagonal network structure composed of hybrid orbitals has excellent properties, such as high electron mobility, good thermal conductivity, light transmission and good stability, and can be applied to semiconductor materials, compound Materials, battery electrode materials, hydrogen storage materials, field emission materials and ultra-sensitive sensors and other fields. Doping is an effective way to change the electronic structure and chemical properties of graphene. The incorporation of heteroatoms into the graphene lattice can not only effectively introduce a band gap, but also increase the defects and local reactivity of graphene, thereby generating many new functions. Studies have found that nitrogen, boron or phosphorus elements can be incorporated into the...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 王灿贾银娟石竹刘志成高焕新
Owner CHINA PETROLEUM & CHEM CORP
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