Metal double-hydroxide/molybdenum disulfide nano-composite material and preparation method and application thereof

A technology of nanocomposite materials and double hydroxides, applied in the field of nanomaterials, can solve problems such as no reports, and achieve the effects of simple steps, large surface area, and good application prospects

Active Publication Date: 2013-12-11
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the research on the combination of metal double hydroxide and molybdenum disulfide to prepare composite materials has not been reported.

Method used

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  • Metal double-hydroxide/molybdenum disulfide nano-composite material and preparation method and application thereof
  • Metal double-hydroxide/molybdenum disulfide nano-composite material and preparation method and application thereof
  • Metal double-hydroxide/molybdenum disulfide nano-composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1) Ultrasonic hydrolysis of 0.5 g of layered molybdenum disulfide after lithium ion intercalation in deionized water for 2 hours to prepare the exfoliated molybdenum disulfide suspension;

[0051] 2) Add 0.3mmol Ni(NO 3 ) 2 ·6H 2 O and 0.1mmolFe(NO 3 ) 3 9H 2 O was dissolved in 200 ml of deionized water, stirred and mixed, and 2.0 mol / liter of sodium hydroxide solution was added dropwise under the protection of nitrogen to adjust the pH of the reaction system to 10, and then stirred and reacted at 100°C for 24 hours, the precipitate in the solution After centrifugation and washing, take 0.1g and redisperse in deionized water to obtain metal double hydroxide (NiFe-LDH) suspension;

[0052] 3) Mix the molybdenum disulfide suspension obtained in 1) with the NiFe-LDH suspension obtained in 2), and stir and react at 30°C for 4 hours to obtain NiFe-LDH / disulfide with a NiFe-LDH content of 16.7%. Molybdenum nanocomposites.

[0053] Such as figure 2 As shown, the diffr...

Embodiment 2

[0056] Other conditions are with embodiment 1, with Ni(NO 3 ) 2 ·6H 2 O to Mg(NO 3 ) 2 ·6H 2 O, Fe(NO 3 ) 3 9H 2 O to Al(NO 3 ) 3 9H 2 O, 0.125 g was re-dispersed in deionized water to obtain a metal double hydroxide (MgAl-LDH) suspension in step 2), and finally a MgAl-LDH / molybdenum disulfide nanocomposite material with a MgAl-LDH content of 20% was obtained.

[0057] Such as Figure 4 As shown, the diffraction peaks of molybdenum disulfide and MgAl-LDH appeared in the XRD of the composite material at the same time.

[0058] Such as Figure 5 As shown, A refers to the MgAl-LDH sheet, B refers to the molybdenum disulfide nanosheet, and the MgAl-LDH sheet is evenly distributed on the molybdenum disulfide sheet to form a MgAl-LDH / molybdenum disulfide nanocomposites.

Embodiment 3

[0060] Other conditions are with embodiment 1, Ni(NO 3 ) 2 ·6H 2 O to Co(NO 3 ) 2 ·6H 2 O, step 2) 0.25 g was redispersed in deionized water to obtain a metal double hydroxide (CoFe-LDH) suspension, and finally a CoFe-LDH / MoS2 nanocomposite with a CoFe-LDH content of 33.3% was obtained.

[0061] The obtained CoFe-LDH / molybdenum disulfide nanocomposite material was tested by X-ray diffraction and transmission electron microscopy. The results showed that the XRD of the composite material showed obvious diffraction peaks of molybdenum disulfide and CoFe-LDH at the same time. The transmission electron micrograph of the composite material shows that the sheets of CoFe-LDH are uniformly distributed on the sheets of molybdenum disulfide, forming a CoFe-LDH / molybdenum disulfide nanocomposite material.

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Abstract

The invention discloses a metal double-hydroxide/molybdenum disulfide nano-composite material and a preparation method and application of the metal double-hydroxide/molybdenum disulfide nano-composite material. Molybdenum disulfide is adopted in the metal double-hydroxide/molybdenum disulfide nano-composite material as supporting materials, and the larger superficial area and more active centers are provided for metal double-hydroxide. The preparation method of the metal double hydroxide/molybdenum disulfide nano-composite material is simple in step, has the advantages of being efficient and environmentally friendly, and is prone to achieving industrial operation.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a composite material in which molybdenum disulfide is used as a support material and metal double hydroxide is deposited on the sheet surface, as well as its preparation method and application. Background technique [0002] In recent years, single-layer two-dimensional nanomaterials have become a research hotspot because of their special structures and properties. Among them, the transition metal disulfide compound molybdenum disulfide (MoS 2 ) and graphene have important scientific research significance and broad application prospects due to the unique physical, chemical and mechanical properties of the two-dimensional nanosheet structure. Especially MoS 2 It has a typical layered structure, with strong covalent bonds (S-Mo-S) in the layers and weak van der Waals force between the layers, making it easy to introduce foreign atoms or molecules between the layers and easy to peel off...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/36B01J23/88B82Y30/00B82Y40/00
CPCY02E60/13
Inventor 胡源周克清桂宙
Owner UNIV OF SCI & TECH OF CHINA
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