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Flower-shaped VS2@Ti3C2 nano composite material based on two-dimensional material as well as preparation method and application thereof

A technology of nanocomposite materials and two-dimensional materials, applied in the field of flower-shaped VS2@Ti3C2 nanocomposite materials, to achieve the effects of improving crystallinity, simple preparation method, and solving poor stability

Pending Publication Date: 2021-10-29
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, a variety of nanocomposite structural systems based on transition metal sulfides have attracted the attention of many researchers, but there is no flower-like VS based on two-dimensional materials in the prior art. 2 @Ti 3 C 2 Research and application of solar photothermal conversion material layer of nanocomposite materials

Method used

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  • Flower-shaped VS2@Ti3C2 nano composite material based on two-dimensional material as well as preparation method and application thereof
  • Flower-shaped VS2@Ti3C2 nano composite material based on two-dimensional material as well as preparation method and application thereof
  • Flower-shaped VS2@Ti3C2 nano composite material based on two-dimensional material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1 Preparation of flower-like VS based on two-dimensional materials 2 @Ti 3 C 2 Nanocomposite

[0065] The specific steps of preparation are as follows:

[0066] (1) Mix 1.0g 200 mesh Ti 3 AlC 2 The powder is fully ground, and 60ml of hydrofluoric acid aqueous solution with a volume fraction of 40% is slowly added, and fully stirred.

[0067] (2) Transfer the above solution to a 100ml reaction kettle, seal it, put it into an oven and heat it in a water bath at 60°C for 24 hours, and cool to room temperature after the reaction is completed.

[0068] (3) Take out the black precipitate in the lower layer of the reaction kettle, rinse it repeatedly with absolute ethanol and deionized water, and dry it at 70°C.

[0069] (4) Take 0.4 g of the above black powder, add 50 ml of deionized water to make a suspension, add 0.5 g of sodium orthovanadate and 1.2 g of thioacetamide, stir for 5 minutes, then add tartaric acid to adjust the pH of the solution to 6.

[0070]...

Embodiment 2

[0073] Example 2 Preparation of overgrown flower-like VS based on two-dimensional materials 2 @Ti 3 C 2 Nanocomposite

[0074] The specific steps of preparation are as follows:

[0075] (1) Mix 1.0g 200 mesh Ti 3 AlC 2 The powder is fully ground, and 60ml of hydrofluoric acid aqueous solution with a volume fraction of 40% is slowly added, and fully stirred.

[0076] (2) Transfer the above solution to a 100ml reaction kettle, seal it, put it into an oven and heat it in a water bath at 60°C for 24 hours, and cool to room temperature after the reaction is completed.

[0077] (3) Take out the black precipitate in the lower layer of the reaction kettle, rinse it repeatedly with absolute ethanol and deionized water, and dry it at 70°C.

[0078] (4) Take 0.4 g of the above black powder, add 50 ml of deionized water to make a suspension, add 0.55 g of sodium orthovanadate and 1.25 g of thioacetamide, stir for 5 minutes, then add tartaric acid to adjust the pH of the solution to ...

Embodiment 3

[0082] Embodiment 3 The present invention is based on the flower-like VS of two-dimensional material 2 @Ti 3 C 2 Performance testing of nanocomposites as solar photothermal conversion material layer

[0083] The flower-shaped VS based on two-dimensional materials prepared in Example 1 of the present invention 2 @Ti 3 C 2 Nanocomposite materials, due to the self-supporting stability of the composite material's morphology and structure, the porous structure is not easy to be destroyed, and has a larger porosity and specific surface area, which can realize multi-level reflection and absorption of sunlight and improve the absorption of near-infrared bands The proportion makes it have significant advantages in the application performance of solar seawater desalination photothermal conversion materials. The present invention is based on the flower-shaped VS of two-dimensional materials 2 @Ti 3 C 2 The performance test of the nanocomposite material as a solar photothermal con...

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Abstract

The invention discloses a two-dimensional material-based flower-shaped VS2@ Ti3C2 nano composite material, which is characterized in that nano flower-shaped VS2 is used as a load, and a two-dimensional Ti3C2 nanosheet is used as a matrix material, so that a stable three-dimensional space structure is formed; the two-dimensional Ti3C2 nanosheet is a nanosheet with the sheet diameter of about 1.0-2.0 [mu] m and the thickness of about 50-100 nm, and the nanoflower-shaped VS2 uniformly grows on the two-dimensional Ti3C2 nanosheet to form a stable carrying structure. The invention further discloses a preparation method of the nano composite material, and the preparation method is high in feasibility, simple in preparation process and high in repeatability. The invention also provides an application of the nano composite material in photo-thermal seawater desalination. The solar photo-thermal conversion material layer has the advantages of high stability, large light absorption surface area, high thermal efficiency, salt accumulation resistance and the like.

Description

technical field [0001] The invention belongs to the field of transition metal sulfides, transition metal carbides and solar photothermal seawater desalination, in particular to a flower-shaped VS based on two-dimensional materials 2 @Ti 3 C 2 Nanocomposite material, its preparation method and its application in solar photothermal seawater desalination. Background technique [0002] Ti 3 C 2 It is a new type of transition metal carbide. Its structure is a two-dimensional layered structure composed of three layers of Ti atoms sandwiched by two layers of C atoms. It has stable physical and chemical properties, rich surface chemical functional groups, and good hydrophilicity. Fields such as batteries, energy storage, and energy conversion have shown good application potential. due to Ti 3 C 2 With excellent hydrophilicity and visible light absorption ability, it is also a good light-to-heat conversion material, and its broad surface can efficiently absorb the visible wave...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/00C01B32/921C02F1/14C02F103/08
CPCC01G31/00C01B32/921C02F1/14C02F2103/08C01P2004/24C01P2004/30C01P2004/50C01P2004/80C01P2004/64C01P2004/61C01P2004/62Y02A20/212Y02A20/124Y02A20/142
Inventor 王振国郁可宗晖朱自强
Owner EAST CHINA NORMAL UNIV
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