Method for preparing single-layer molybdenum disulfide flake doped graphene composite film

A single-layer molybdenum disulfide and molybdenum disulfide sheet technology is applied in the field of preparation of graphene composite films, which can solve the problems of less preparation, high requirements, long reaction time, etc., and achieves simple operation, acceptable thickness and volume. Simple control and process preparation

Inactive Publication Date: 2015-07-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, up to now, the preparation of single-layer molybdenum disulfid

Method used

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  • Method for preparing single-layer molybdenum disulfide flake doped graphene composite film
  • Method for preparing single-layer molybdenum disulfide flake doped graphene composite film
  • Method for preparing single-layer molybdenum disulfide flake doped graphene composite film

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] (1) Preparation of single-layer molybdenum disulfide by lithium ion intercalation method: At room temperature, 300 mg of molybdenum disulfide is thoroughly stirred and dispersed into 3 mL of n-butyl lithium hexane solution, and the magnetron is stirred for 48 hours under the protection of N2 atmosphere. After the completion of the reaction, 10 mL of n-hexane solution was added to dilute the reaction solution, and after fully stirring for 2 hours, 50 mL of deionized water was added to the stirring for 10 minutes, followed by ultrasonic stripping reaction for 30 minutes to obtain monolayer molybdenum disulfide stripped by lithium ion intercalation reaction.

[0034] (2) Using the Hummers method to prepare graphite oxide: oxidize 500 mesh graphite powder with potassium permanganate and concentrated sulfuric acid, and place the filter cake obtained by suction filtration under vacuum drying at 60° C. for 24 hours, and grind to obtain graphite oxide.

[0035] (3) ...

Example Embodiment

[0036] Example 2

[0037] Step (1) and step (2) are the same as (1) and (2) in Example 1.

[0038] (3) Disperse 10 mg of the stripped monolayer molybdenum disulfide in 100 mL of deionized water at room temperature. After fully stirring, the ultrasonic time in the water bath and the ultrasonic time of the cell crusher are 10 min and 30 min, respectively. Weigh 5 mg of graphite oxide powder and ultrasonically disperse in 100 mL of deionized water, and ultrasonically disperse for 20 minutes. Measure 7.5 mL of the above-mentioned dispersed monolayer molybdenum disulfide aqueous solution and graphene oxide aqueous solution respectively, mix well and ultrasonicate for 10 minutes. The uniformly mixed 15 mL mixed aqueous solution is filtered with a polytetrafluoroethylene with a pore size of 0.6 μm to obtain a suction filter membrane. After the suction filtration, the obtained suction-filtered film and the polytetrafluoroethylene filter membrane are simultaneously placed in a vacuum oven...

Example Embodiment

[0039] Example 3

[0040] Step (1) and step (2) are the same as (1) and (2) in Example 1.

[0041] (3) Disperse 5 mg of the stripped monolayer molybdenum disulfide in 100 mL of deionized water at room temperature. After fully stirring, the ultrasonic time in the water bath and the ultrasonic time of the cell crusher are 30 min and 60 min, respectively. Weigh 10 mg of graphite oxide powder and ultrasonically disperse it in 100 mL of deionized water, and ultrasonically disperse for 20 minutes. Measure 5 mL of the above dispersed molybdenum disulfide aqueous solution and 10 mL of graphene oxide aqueous solution, mix well, and ultrasonicate for 10 minutes. Filter the uniformly mixed 15 mL mixed aqueous solution with a polytetrafluoroethylene with a pore size of 0.5 μm to obtain a suction filter membrane. After the suction filtration, the obtained suction-filtered film and the polytetrafluoroethylene filter membrane were simultaneously placed in a vacuum oven at 60° C. for drying for ...

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Abstract

The invention relates to a method for preparing a single-layer molybdenum disulfide flake doped graphene composite film. The method comprises the following steps: preparing a uniformly dispersed single-layer molybdenum disulfide and oxidized graphene mixed dispersant, and performing suction filtering to obtain a single-layer molybdenum disulfide flake doped graphene composite film; then, reducing with hydroiodic acid to obtain the single-layer molybdenum disulfide flake doped graphene composite film; washing the reduced composite film with absolute ethyl alcohol and deionized water; and drying in vacuum to obtain the single-layer molybdenum disulfide flake doped graphene composite film. The method has the characteristics of simple process and easily industrial production, can be used for preparing single-layer molybdenum disulfide and graphene composite nano-materials in large scale, and can be applied to the fields of photocatalysis, electrocatalysis, hydrogen evolution catalysis, supercapacitors and the like.

Description

technical field [0001] The invention belongs to the field of preparation of composite films, in particular to a method for preparing a graphene composite film doped with a single-layer molybdenum disulfide sheet. Background technique [0002] In recent years, with the upsurge of research on two-dimensional layered nanomaterials such as graphene, a new type of two-dimensional layered compound - graphene-like molybdenum disulfide has attracted the attention of researchers in many fields such as physics, chemistry, materials, and electronics. extensive attention. Graphene-like molybdenum disulfide is a compound with a "sandwich sandwich" layered structure composed of hexagonal single-layer or multi-layer molybdenum disulfide. The single-layer molybdenum disulfide is composed of three atomic layers, the middle layer is a molybdenum atomic layer, and the upper and lower layers are sulfur atomic layers, and the molybdenum atomic layer is sandwiched by two sulfur atomic layers to ...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 李耀刚李佳慧王宏志张青红侯成义
Owner DONGHUA UNIV
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