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Preparation method of ferrous disulfide-graphene composite nano lubricant

A graphene composite and ferrous disulfide technology, applied in the field of nanomaterials, can solve complex problems, achieve low reaction temperature, mild and pollution-free preparation process, and good dispersion

Active Publication Date: 2014-02-26
ZHENJIANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

FeS 2 The common preparation methods mainly include electrodeposition method, thermal vulcanization method, chemical vapor transport method, laser sputtering method, spray pyrolysis method, solvothermal method, etc., which are relatively complicated.

Method used

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  • Preparation method of ferrous disulfide-graphene composite nano lubricant
  • Preparation method of ferrous disulfide-graphene composite nano lubricant
  • Preparation method of ferrous disulfide-graphene composite nano lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Dissolve 0.1g of graphene in 20ml of deionized water and ultrasonically for 1h, then add 0.3g of polyvinylpyrrolidone (PVP) and 0.2g of ferric chloride respectively, after completely dissolving, add 5ml of NaOH solution with a concentration of 0.5M dropwise, and then Add 0.2 g of thiourea, and stir magnetically for 30 min. The solution was transferred to a 50ml stainless steel reaction kettle with polytetrafluoroethylene lining and kept at 180°C for 16h. Cool to room temperature, wash by centrifugation, and vacuum-dry in a vacuum oven at 60°C for 8 hours to obtain a black powder.

Embodiment 2

[0016] The difference from Example 1 is that polyvinylpyrrolidone is replaced by cetyltrimethylammonium bromide.

Embodiment 3

[0017] Embodiment 3: the difference from embodiment 1 is that the consumption of graphene is 0.2g, and the dispersant is cetyltrimethylammonium bromide.

[0018] The consumption of the component that embodiment 4 to embodiment 7 adopts and process parameter are as shown in table 1:

[0019] Table 1

[0020] Due to the small amount of graphene, only a part of the graphene thin layer structure can be seen, and the peak of graphene in XRD cannot be detected).

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Abstract

The invention discloses a preparation method of a ferrous disulfide-graphene composite nano lubricant. The preparation method is characterized by comprising the following steps: (1), adding matrix graphene, an iron source ferrous chloride and a dispersing agent into water to prepare liquor, regulating pH value to be alkaline, adding a vulcanizing agent thiourea, and uniformly mixing the liquor for future use; and (2), transferring the liquor into a stainless steel reaction kettle, sealing, cooling to the room temperature after carrying out hydrothermal reaction for 16 hours at 140 DEG C-240 DEG C, cleaning products by using deionized water, repeatedly cleaning by using absolute ethyl alcohol, carrying out vacuum drying to obtain black powder, wherein the structure of the black powder is that an FeS2 nanosphere coats on a graphene sheet layer, and dimension is 450 nm-800 nm. According to the preparation method, materials are easily available, price is low, preparation process is simple, parameters are easy to control, production process is safe and environment-friendly, and therefore, the preparation method is especially suitable for large-scale industrial production.

Description

technical field [0001] The present invention relates to the field of nanomaterials, specifically, a FeS 2 -The preparation method of graphene composite nano-lubricant. Background technique [0002] In recent years, transition metal sulfides MS 2 (M=Mo, W, Fe, Zn, etc.), due to its unique physical and chemical properties and novel structure, it has attracted widespread attention and in-depth research. These substances are widely used as lithium-ion battery electrodes, lubricating oil additives, new catalysts, and thermoelectric materials. As an important member of transition metal sulfides, FeS 2 (Pyrite) has a very high light absorption coefficient (visible light region α=6×10 5 cm -1 ) and suitable bandgap width (Eg=0.95eV) combined with its excellent optical, electrochemical and magnetic properties make it have good potential application prospects in the fields of solar photoelectric conversion technology, special functional electrode materials and electromagnetic mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M125/22C09C1/46C09C3/06B82Y40/00B82Y30/00C10N30/06
Inventor 唐国钢李长生唐华杨琥
Owner ZHENJIANG COLLEGE
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