a layered mos 2 ‑sno 2 Preparation method of nanocomposite

A nano-composite material, mos2-sno2 technology, applied in the field of metal molybdenum, can solve the problems of poor photocatalysis and lubricating performance, unsuitable for industrial production, complex preparation process, etc., achieve high preparation efficiency, improve catalytic hydrogenation and lubrication performance. , the effect of simple operation

Active Publication Date: 2017-11-28
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology

[0009] Based on the problems existing in the prior art, the present invention proposes a layered MoS 2 -SnO 2 Preparation method of nanocomposite materials to obtain layered MoS with nanoscale and superior properties 2 -SnO 2 Nanocomposites to address existing MoS 2 -SnO 2 The preparation process of composite materials is complicated, consumes a lot of energy, is not suitable for industrial production, and is in the form of particles, which makes the photocatalytic and lubricating performance poor.

Method used

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  • a layered mos <sub>2</sub> ‑sno <sub>2</sub> Preparation method of nanocomposite
  • a layered mos <sub>2</sub> ‑sno <sub>2</sub> Preparation method of nanocomposite
  • a layered mos <sub>2</sub> ‑sno <sub>2</sub> Preparation method of nanocomposite

Examples

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Embodiment 1

[0039] This example gives a layered MoS 2 -SnO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0040] Step 1: Take 10g of molybdenum disulfide powder and grind it to a 200-mesh sieve, add it to an ethanol solution with a mass concentration of 10% and containing 100g of polyphenylene sulfide, heat it in a water bath to 30°C and stir for 12 hours to obtain a mixed solution.

[0041] Step 2, add 5g KMnO to the mixture 4 powder, heated to 50°C in a water bath and stirred for 5h, adding 3g of SnO under rapid stirring 2 Nano powder, continue to stir for 1h, filter and dry the filter cake to obtain 6.5g intercalated MoS 2 -SnO 2 Mix powder.

[0042] Step 3, take 3g intercalated MoS 2 -SnO 2 The mixed powder and 1.5g of picric acid are evenly mixed and put into a high-pressure reactor, vacuumized and argon is introduced, the reactor is heated to 500°C and explodes, and after cooling to room temperature with the furnac...

Embodiment 2

[0048] This example gives a layered MoS 2 -SnO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0049] Step 1: Take 10g of molybdenum disulfide powder and grind it to a 200-mesh sieve, add it to an ethanol solution with a mass concentration of 20% and containing 200g of polyphenylene sulfide, heat it in a water bath to 40°C and stir for 10h to obtain a mixed solution.

[0050] Step 2, add 10g KMnO to the mixture 4 powder, heated to 60°C in a water bath and stirred for 4.5h, adding 6g of SnO under rapid stirring 2 Nano powder, continue to stir for 1.5h, filter and dry the filter cake to obtain 8g intercalated MoS 2 -SnO 2 Mix powder.

[0051] Step 3, take 3g intercalated MoS 2 -SnO 2 The mixed powder and 3g of picric acid are evenly mixed and put into the high-pressure reactor, vacuumized and argon is introduced, the reactor is heated to 480°C to explode, and the explosive reactant is taken out after cooling to ...

Embodiment 3

[0054] This example gives a layered MoS 2 -SnO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0055] Step 1: Take 10g of molybdenum disulfide powder and grind it to 200 mesh and sieve it, add it to an ethanol solution with a mass concentration of 30% and containing 300g of polyphenylene sulfide, heat it in a water bath to 50°C and stir for 8 hours to obtain a mixed solution.

[0056] Step 2, add 15g KMnO to the mixture 4 powder, heated to 70°C in a water bath and stirred for 4h, adding 9g of SnO under rapid stirring 2 Nano powder, continue to stir for 2h, filter and dry the filter cake to obtain 12g intercalated MoS 2 -SnO 2 Mix powder.

[0057] Step 3, take 3g intercalated MoS 2 -SnO 2 The mixed powder and 4.5g of picric acid are evenly mixed and put into a high-pressure reactor, vacuumized and argon is introduced, the reactor is heated to 450°C to explode, and the explosive reactant is taken out after cooli...

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Abstract

The present invention provides a layered MoS 2 -SnO 2 The preparation method of the nanocomposite material is that molybdenum disulfide powder is added into the layered solution for a layered reaction to form a mixed solution; an oxidant is added to the mixed solution for an oxidative intercalation reaction, and then SnO is added under stirring. 2 Nano powder, continue to stir evenly to get intercalated MoS 2 -SnO 2 mixed powder; the intercalated MoS 2 -SnO 2 The mixed powder is mixed with the explosive agent to carry out the explosive reaction, and after cooling to room temperature, the explosive reaction product is taken out to obtain layered MoS 2 -SnO 2 nanocomposites. The invention utilizes the thiophilic property of the aromatic sulfide to reduce the interlayer van der Waals force of the molybdenum disulfide raw material powder, and performs intercalation and exfoliation in combination with explosion impact. The product prepared by the present invention is layered molybdenum disulfide and SnO with high carrier mobility 2 nanoparticle composite nanomaterials, and SnO 2 The nanoparticles are evenly attached to the single-layer molybdenum disulfide sheet, which improves its catalytic hydrogenation and lubricating properties, and greatly expands the application range of molybdenum disulfide.

Description

technical field [0001] The invention belongs to the technical field of metal molybdenum, relates to molybdenum disulfide composite materials, and in particular to a layered MoS 2 -SnO 2 Preparation methods of nanocomposites. Background technique [0002] Graphene-like MoS2 composed of single or few layers of MoS2 2 ) is a new type of two-dimensional (2D) layered compound with graphene-like structure and properties. In recent years, it has become an emerging research hotspot due to its unique physical and chemical properties. Graphene-like molybdenum disulfide is a two-dimensional crystal material with a "sandwich sandwich" layered structure composed of a hexagonal single-layer or multi-layer molybdenum disulfide. The single-layer molybdenum disulfide is composed of three atomic layers. The layer is a molybdenum atomic layer, and the upper and lower layers are sulfur atomic layers. The molybdenum atomic layer is sandwiched by two sulfur atomic layers to form a "sandwich" s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/051B01J37/12B01J37/00C10M125/00C10M125/22B82Y40/00
CPCB01J27/051B01J35/004B01J35/023B01J37/00B01J37/12B82Y40/00C10M125/00C10M125/22C10M2201/062C10M2201/066
Inventor 胡平王快社杨帆胡卜亮宋瑞陈震宇李秦伟戴晓庆
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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