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Three-dimensional framework material constructed by connecting molybdenum disulfide with two connecting ligands and preparation method

A frame material, molybdenum disulfide technology, applied in the production of bulk chemicals, etc., can solve problems such as difficult stripping and intercalation

Active Publication Date: 2020-07-31
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the two-dimensional semiconductor material MoS 2 There is a strong force between the layers, and it is difficult to peel off and intercalate. Therefore, there is no research on the construction of an ordered three-dimensional framework structure by connecting molybdenum disulfide with organic molecules.

Method used

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  • Three-dimensional framework material constructed by connecting molybdenum disulfide with two connecting ligands and preparation method
  • Three-dimensional framework material constructed by connecting molybdenum disulfide with two connecting ligands and preparation method
  • Three-dimensional framework material constructed by connecting molybdenum disulfide with two connecting ligands and preparation method

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Experimental program
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Effect test

Embodiment 1

[0026] p-Phenylenediamine-MoS 2 (abbreviated as PPDA-MoS 2 ), the specific steps are as follows: 352 mg of (NH 4 ) 6 Mo 7 o 24 4H 2 O, 960mg Na 2 S·9H 2 O, 10 mL of H 2 O, 1 mL of DMA and 2 mL of N 2 h 4 ·H 2 O was placed in a 25mL Teflon-liner autoclave, stirred evenly, and heated at 230°C for 24 hours, and the autoclave was taken out. After cooling, black crystal DMA-MoS was collected at the bottom of the container 2, the freshly synthesized samples were washed three times with deionized water and ethanol, and then activated with supercritical carbon dioxide.

[0027] 30mg of p-phenylenediamine and 90mg of DMA-MoS 2 Triturate together to obtain a fine mixture in an argon-filled glove box to prevent the activated sample from absorbing water. The mixture was sealed in a Pyrex tube and heated at 120 °C for 24 h to infiltrate p-phenylenediamine (90 mg) into DMA-MoS by the melt-diffusion method 2 in the pores to generate PPDA-MoS 2 . After cooling to room temperat...

Embodiment 2

[0029] Biphenyl diamine-MoS 2 (abbreviated as BPDA-MoS 2 ) synthetic preparation, concrete steps are as follows:

[0030] 352mg of (NH 4 ) 6 Mo 7 o 24 4H 2 O, 960mg Na 2 S·9H 2 O, 10 mL of H 2 O, 1 mL of DMA and 2 mL of N 2 h 4 ·H 2 O was placed in a 25mL Teflon-liner autoclave, stirred evenly, and heated at 230°C for 24 hours, and the autoclave was taken out. After cooling, black crystal DMA-MoS was collected at the bottom of the container 2 , the freshly synthesized samples were washed three times with deionized water and ethanol, and then activated with supercritical carbon dioxide.

[0031] Mix 30mg of benzidinediamine with 90mg of DMA-MoS 2 Triturate together to obtain a fine mixture in an argon-filled glove box to prevent the activated sample from absorbing water. The mixture was sealed in a Pyrex tube and heated at 120 °C for 24 h to infiltrate biphenylenediamine (90 mg) into DMA-MoS by the melt-diffusion method 2 in the pores to generate BPDA-MoS 2 . A...

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Abstract

The invention discloses a three-dimensional framework material constructed by connecting molybdenum disulfide with two connecting ligands and a preparation method, and belongs to the field of materialpreparation. Molybdenum disulfide layers are connected through Van der Waals' force and are difficult to pull open. In the preparation method, solvent molecules N',N-dimethylacetamide are inserted into space between the layers to preliminarily increase the interlayer distance, and reduce the insertion resistance of an organic ligand into the space between the layers, and then through a replacement manner, the solvent molecules N',N-dimethylacetamide are replaced with ligands which are p-phenylenediamine and biphenyl diamine to construct an ordered three-dimensional structure. The three-dimensional framework structure shows excellent electro-catalytic performance when used as an electrode material for electro-catalytic hydrogen evolution. The synthesis method of the material is simple, feasible, green and environment-friendly, and has universality. The obtained three-dimensional framework material has the properties of a two-dimensional material in the aspects of light, electricity, sound and the like, and also has the properties of a three-dimensional material in the aspects of a net structure and the like.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a three-dimensional frame material constructed by connecting molybdenum disulfide with two linking ligands and a preparation method thereof. Background technique [0002] In the past few decades, the connection of inorganic clusters and organic molecules through coordination bonds to construct metal-organic frameworks is an important development in the field of chemistry. The introduction of organic molecules creates enough space for precise interactions with guest molecules and maximizes the exposure of functional units. Another key component of metal-organic frameworks is the secondary building unit that controls the topology. The secondary building unit is usually zero-dimensional or one-dimensional. Two-dimensional building units are very rare. Some progress has been made in the research of three-dimensional layered metal organic framework materials, but their electrical,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/008Y02P20/54
Inventor 戴红梅邓鹤翔
Owner WUHAN UNIV