a layered mos 2 ‑tio 2 Preparation methods of nanocomposites

A nanocomposite material, mos2-tio2 technology, applied in the field of metal molybdenum, can solve the problems of poor photocatalysis and lubrication performance, unsuitable for industrial production, complex preparation process, etc., achieve high production efficiency, improve catalytic and lubrication performance, and operate simple effect

Active Publication Date: 2017-12-19
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Based on the problems existing in the prior art, the present invention proposes a layered MoS 2 -TiO 2 Preparation method of nanocomposite materials to obtain layered MoS with nanoscale and superior properties 2 -TiO 2 Nanocomposites to address existing MoS 2 -TiO 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> ‑tio <sub>2</sub> Preparation methods of nanocomposites
  • a layered mos <sub>2</sub> ‑tio <sub>2</sub> Preparation methods of nanocomposites
  • a layered mos <sub>2</sub> ‑tio <sub>2</sub> Preparation methods of nanocomposites

Examples

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Effect test

Embodiment 1

[0035] This example gives a layered MoS 2 -TiO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0036] 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 12h, filter and remove the filter cake Dry, grind to 200 mesh and sieve to obtain 3.1g layered molybdenum disulfide powder.

[0037] Step 2: Mix 5g of tetrabutyl titanate, 50ml of diethanolamine and 75ml of absolute ethanol, add 25ml of distilled water, stir and chelate at 45°C for 3h to obtain a precursor solution, and dry the precursor solution at 100°C for 6h Finally, dry gel is obtained, and it is ground to 200 mesh and sieved to obtain dry gel powder.

[0038] Step 3, mix the obtained 3.1g layered molybdenum disulfide powder with 1.6g xerogel powder and 1.6g picric acid and put t...

Embodiment 2

[0044] This example gives a layered MoS 2 -TiO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0045] Step 1, take 10g of molybdenum disulfide powder and grind it to 200 mesh sieve, add it to the ethanol solution with a mass concentration of 20% and containing 200g of polyphenylene sulfide, heat it in a water bath to 50°C and stir for 5h, filter and remove the filter cake Dry, grind to 200 mesh and sieve to obtain 3.4g layered molybdenum disulfide powder;

[0046] Step 2: Mix 5g of tetrabutyl titanate, 75ml of diethanolamine and 100ml of absolute ethanol, add 50ml of distilled water, stir and chelate at 50°C for 4h to obtain a precursor solution, and dry the precursor solution at 105°C for 7h Finally, dry gel is obtained, and it is ground to 200 mesh and sieved to obtain dry gel powder.

[0047] Step 3, mix the obtained 3.4g layered molybdenum disulfide powder with 3.4g xerogel powder and 3.4g picric acid and put ...

Embodiment 3

[0050] This example gives a layered MoS 2 -TiO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0051] Step 1: Take 10g of molybdenum disulfide powder and grind it to 200 mesh sieve, 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 40°C and stir for 8h, filter and remove the filter cake Dry, grind to 200 mesh and sieve to obtain 2.8g layered molybdenum disulfide powder;

[0052] Step 2: Mix 5g of tetrabutyl titanate, 100ml of diethanolamine and 125ml of absolute ethanol, add 75ml of distilled water, stir and chelate at 60°C for 5h to obtain a precursor solution, and dry the precursor solution at 110°C for 9h Finally, dry gel is obtained, and it is ground to 200 mesh and sieved to obtain dry gel powder.

[0053] Step 3, mix the obtained 2.8g layered molybdenum disulfide powder with 4.5g xerogel powder and 5.6g picric acid and put ...

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Abstract

The present invention provides a layered MoS 2 -TiO 2 The preparation method of the nanocomposite material comprises the steps of adding molybdenum disulfide powder into a layered solution for layering reaction, filtering and drying after completion of the reaction to obtain layered molybdenum disulfide powder; adding tetrabutyl titanate, diethanolamine and anhydrous Ethanol is mixed and added to distilled water for chelation reaction to obtain a precursor solution. The precursor solution is evaporated and dried to obtain xerogel, which is ground to obtain xerogel powder; add xerogel powder to the layered molybdenum disulfide powder and explode agent, carry out explosive reaction, take out the explosive reaction product after cooling to room temperature, and obtain layered MoS 2 -TiO 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 delaminates it in combination with explosion impact. The present invention combines the sol-gel method with the explosive high-temperature impact, and completes the TiO 2 Rapid reduction of and MoS 2 The exfoliation of layered MoS was successfully prepared 2 -TiO 2 nanocomposites.

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 -TiO 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): B01J27/051B01J37/00C10M125/00C10M125/22B82Y40/00
CPCB01J27/051B01J35/004B01J35/023B01J37/00B82Y40/00C10M125/00C10M125/22C10M2201/062C10M2201/066
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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