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: 2018-02-16
JINDUICHENG MOLYBDENUM CO LTD
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  • Abstract
  • Description
  • 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 Nanocomposite materials to solve 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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Embodiment 1

[0036] This example gives a layered MoS 2 -TiO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0037] 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 10% and containing 100g of polyphenylene sulfide, heat it in a water bath to 30°C and stir for 12h to obtain a mixed solution.

[0038] Step 2, add 5g KMnO to the above mixed solution 4 powder, heated to 50°C in a water bath and stirred for 18 hours, filtered and dried the filter cake, ground to 200 mesh and sieved to obtain 3.3g of intercalated molybdenum disulfide powder.

[0039] Step 3, the gained intercalation molybdenum disulfide powder and 3.3gTiO 2 Nano-powder and 1.6g 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 to explode, and after cooling to room temperature with the f...

Embodiment 2

[0045] This example gives a layered MoS 2 -TiO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0046] Step 1: Grind 10 g of molybdenum disulfide powder to 200 mesh and sieve it, add it to an ethanol solution with a mass concentration of 20% and containing 200 g of polyphenylene sulfide, heat to 50° C. in a water bath and stir for 5 hours to obtain a mixed solution.

[0047] Step 2, add 10g KMnO to the above mixed solution 4 powder, heated to 80°C in a water bath and stirred for 8 hours, filtered and dried the filter cake, ground to 200 mesh and sieved to obtain 3g of intercalated molybdenum disulfide powder.

[0048] Step 3, the gained intercalation molybdenum disulfide powder and 1.5gTiO 2 Nano-powder and 3g of picric acid are evenly mixed and put into a high-pressure reactor, vacuumed and argon is introduced, and the reactor is heated to 480°C to explode, and after cooling to room temperature with the furnace, t...

Embodiment 3

[0051] This example gives a layered MoS 2 -TiO 2 A method for preparing a nanocomposite material, the method specifically comprising the following steps:

[0052] Step 1: Grind 10 g of molybdenum disulfide powder to a 200-mesh sieve, add it to an ethanol solution with a mass concentration of 30% and containing 300 g of polyphenylene sulfide, heat it in a water bath to 40° C. and stir for 8 hours to obtain a mixed solution.

[0053] Step 2, add 15g KMnO to the above mixed solution 4 powder, heated to 70°C in a water bath and stirred for 12 hours, filtered and dried the filter cake, ground to 200 mesh and sieved to obtain 2.8g of intercalated molybdenum disulfide powder.

[0054] Step three, the gained intercalation molybdenum disulfide powder and 0.8g TiO 2 Nano-powder and 5.6g of picric acid are evenly mixed into a high-pressure reactor, vacuumed and argon is introduced, and the reactor is heated to 450°C to explode. After cooling to room temperature with the furnace, the e...

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Abstract

The invention provides a preparation method of a layered MoS2-TiO2 nano composite material. The preparation method comprises the following steps: adding molybdenum disulfide powder into a layering solution to carry out layering reactions to form a mixed solution; adding an oxidant into the mixed solution to carry out oxidation-intercalation reactions, filtering, and drying to obtain intercalated molybdenum disulfide powder; adding TiO2 nano powder and a blasting agent into the intercalated molybdenum disulfide powder to carry out explosive reactions, cooling to the room temperature, and taking out the explosive reaction products namely the layered MoS2-TiO2 nano composite material. The sulfur affinity feature of aromatic thioether is utilized to reduce the Van der Waals' force between layers of molybdenum disulfide powder, and under the assistance of explosion impact, molybdenum disulfide powder is layered and peeled. The provided nano material has high carrier mobility and is prepared by compounding layered molybdenum disulfide and TiO2 nano particles; TiO2 nano particles are evenly adhered on a single molybdenum disulfide layer, and thus the catalytic and lubricating performances of the composite material are improved.

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): B01J27/051B01J37/12B01J37/00C10M125/00C10M125/22B82Y40/00
CPCB01J27/051B01J35/004B01J35/023B01J37/00B01J37/12B82Y40/00C10M125/00C10M125/22C10M2201/062C10M2201/066
Inventor 曹维成王快社胡平刘东新杨帆安耿卜春阳厉学武唐丽霞何凯刘仁智
Owner JINDUICHENG MOLYBDENUM CO LTD
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