Preparation method of rose-shaped MoS2 nanoflower

A nano-flower and rose technology, applied in chemical instruments and methods, physical/chemical process catalysts, molybdenum sulfide, etc., can solve the problems of product size and morphology that are difficult to control, harsh reaction conditions at high temperature, and poor particle dispersion. To achieve the effect of simple equipment, low cost and good dispersion

Inactive Publication Date: 2018-08-03
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have deficiencies to a certain extent, such as the size and shape of the product are difficult to control; the particle dispersion is not good and easy to agglomerate; the yield is not high; the high temperature reaction conditions are harsh or the preparation process is relatively complicated and the cost is relatively high.

Method used

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  • Preparation method of rose-shaped MoS2 nanoflower
  • Preparation method of rose-shaped MoS2 nanoflower
  • Preparation method of rose-shaped MoS2 nanoflower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A rose-like MoS 2 The preparation method of nanoflowers comprises the following preparation steps in turn:

[0032] (1) Weigh 1.236g ammonium molybdate tetrahydrate and dissolve in 20ml deionized water to make solution A; weigh 0.75g thioacetamide and dissolve it in 20ml deionized water to make solution B;

[0033] (2) Mix solutions A and B as a reaction solution, transfer them to a reactor for hydrothermal reaction, the reaction temperature is 170 °C, and the reaction time is 15 hours, and the rose-shaped MoS 2 The suspension reaction solution of nanoflowers;

[0034] (3) Centrifuge the obtained suspension reaction solution, and then wash the precipitate with deionized water and absolute ethanol respectively;

[0035] (4) Dry the precipitate in a vacuum drying oven at 50°C for 5 hours to finally obtain black molybdenum disulfide powder, and the yield is as high as 97.2%.

[0036] Rose-like MoS prepared in this example 2 Scanning electron microscope image of nanoflo...

Embodiment 2

[0044] A rose-like MoS 2 The preparation method of nanoflowers comprises the following preparation steps in turn:

[0045] (1) Weigh 1.236g ammonium molybdate tetrahydrate and dissolve in 20ml deionized water to make solution A; weigh 0.15g thioacetamide and dissolve it in 20ml deionized water to make solution B;

[0046](2) Mix solutions A and B as a reaction solution, transfer them to a reactor for hydrothermal reaction, the reaction temperature is 160 °C, and the reaction time is 17 hours, and the rose-like MoS 2 The suspension reaction solution of nanoflowers;

[0047] (3) Centrifuge the obtained suspension reaction solution, and then wash the precipitate with deionized water and absolute ethanol respectively;

[0048] (4) Dry the precipitate in a vacuum drying oven at 50°C for 5 hours to finally obtain black molybdenum disulfide powder, and the yield is as high as 98.0%.

[0049] Rose-like MoS prepared in this example 2 Scanning electron microscope image of nanoflower...

Embodiment 3

[0051] A rose-like MoS 2 The preparation method of nanoflowers comprises the following preparation steps in turn:

[0052] (1) Weigh 0.2472g ammonium molybdate tetrahydrate and dissolve it in 20ml deionized water to make solution A; weigh 0.15g thioacetamide and dissolve it in 20ml deionized water to make solution B;

[0053] (2) Mix solutions A and B as a reaction solution, transfer them to a reactor for hydrothermal reaction, the reaction temperature is 190 ° C, and the reaction time is 15 hours, and the rose-shaped MoS 2 The suspension reaction solution of nanoflowers;

[0054] (3) Centrifuge the obtained suspension reaction solution, and then wash the precipitate with deionized water and absolute ethanol respectively;

[0055] (4) Dry the precipitate in a vacuum drying oven at 45°C for 5.5 hours to finally obtain black molybdenum disulfide powder with a yield as high as 97.6%.

[0056] Rose-like MoS prepared in this example 2 Scanning electron microscope image of nanof...

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Abstract

The invention relates to a preparation method of rose-shaped MoS2 nanoflower. The preparation method sequentially comprises the following steps: (1), dissolving ammonium molybdate tetrahydrate into deionized water to form a solution A, and dissolving thioacetamide into deionized water to form a solution B; (2), mixing the solution A and the solution B as a reaction solution, and performing a hydrothermal reaction in a reaction kettle. The preparation method has the characteristics of easy obtainment of raw materials, simple equipment, low cost, simple operation, good stability, easiness in control, high efficiency, rapidness and the like, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the preparation of nanomaterials, in particular to a rose-like MoS 2 Preparation method of nanoflowers. Background technique [0002] Molybdenum disulfide (MoS 2 ) nanopowder is an important transition metal nanomaterial. It is a layered crystal composed of Mo atoms and S atoms through covalent bonds, and a layer of Mo atoms is sandwiched between two hexagonal S atomic layers to form a MoS 2 The molecular layer presents a "sandwich" structure, and the three atomic layers of S-Mo-S are stacked together by van der Waals force. Due to the weak van der Waals force between layers, MoS 2 The friction coefficient is very low and has strong lubricating properties. Nano-sized MoS 2 It has the advantages of large specific surface area, strong adsorption capacity, high reactivity, large energy band width, and easy modification. In addition to being used as a solid lubricant, it has been used in nanoelectronics, optoelectronics, sens...

Claims

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Application Information

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IPC IPC(8): C01G39/06B01J27/051
CPCC01G39/06B01J27/051C01P2004/03C01P2004/30C01P2004/62B01J35/23B01J35/39
Inventor 吴会杰
Owner CHONGQING UNIV OF ARTS & SCI
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