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One-step solvothermal preparation process of two-dimensional MOF materials

A solvothermal method and process technology, which is applied in the field of one-step solvothermal preparation of two-dimensional MOF materials, can solve the problems of narrow application range, complex operation, uneven sheet, etc., and achieve uniform distribution of components, simple process steps, and uniformity Good results

Active Publication Date: 2021-01-01
ZHEJIANG UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to overcome the problems of low yield, uneven sheet, complicated operation and narrow application range in the traditional two-dimensional MOF material preparation process, the present invention provides a one-step method with simple steps, uniform product appearance and universal applicability. Process for preparing two-dimensional MOF materials by solvothermal method

Method used

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  • One-step solvothermal preparation process of two-dimensional MOF materials
  • One-step solvothermal preparation process of two-dimensional MOF materials
  • One-step solvothermal preparation process of two-dimensional MOF materials

Examples

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Effect test

Embodiment 1

[0035] Disperse the above-mentioned MIL-53(Fe) three-dimensional MOF material into methanol to obtain a dispersion liquid with a concentration of 0.1 mg / mL; pour the dispersion liquid into the reaction kettle and react at 60°C for 10 hours. The obtained product was naturally cooled to 10°C, then washed by centrifugation with methanol or ethanol, repeated once, and dried in vacuum for 6 hours to obtain the MIL-53(Fe) two-dimensional MOF material.

Embodiment 2

[0037] Disperse the above MIL-53(Fe) three-dimensional MOF material into ethanol to obtain a dispersion solution with a concentration of 10 mg / mL; pour the dispersion solution into the reaction kettle and react at 200°C for 1 hour. After the reaction, the obtained The product was naturally cooled to 40°C, then washed with methanol or ethanol by centrifugation, repeated 5 times, and dried in vacuum for 10 hours to obtain the MIL-53(Fe) two-dimensional MOF material.

Embodiment 3

[0039] Disperse the above-mentioned MIL-53(Fe) three-dimensional MOF material into ethanol to obtain a dispersion liquid with a concentration of 0.56 mg / mL; pour the dispersion liquid into the reaction kettle and react at 120°C for 8 hours. After the reaction, put The obtained product was naturally cooled to 25°C, then centrifuged and washed with methanol or ethanol, repeated three times, and vacuum-dried for 8 hours to obtain the MIL-53(Fe) two-dimensional MOF material.

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Abstract

The invention relates to the technical field of organic complex, especially to a technology for preparing a two-dimensional MOF material by a one-step solvothermal method. The technology comprises thefollowing steps: dispersing a three-dimensional MOF crystalline powder into an organic solvent to obtain a dispersion liquid; and pouring the dispersion liquid into a reaction vessel and reacting at60-200 DEG C for 1-10 h, cooling, washing, and drying to obtain the two-dimensional MOF material. The technology has the following advantages: yield is high, steps are simple, conditions are easy to control, and the technology has universality; excellent characteristics of a three-dimensional MOF material are maintained in the prepared two-dimensional MOF material, and specific surface area of thematerial is further raised; homogeneity is good; active sites for participating in the chemical reaction are increased; and the application advantage in the fields of catalysis, sensing, electrochemistry, etc. is improved.

Description

technical field [0001] The invention relates to the technical field of metal-organic complexes, in particular to a process for preparing two-dimensional MOF materials by a one-step solvothermal method. Background technique [0002] Metal-organic frameworks (MOF) is a material with a periodic porous network structure formed by self-assembly between metal-organic ligands and metal ions through metal-ligand complexation. With adjustable structure, large specific surface area and stable chemical properties, it is widely used in catalysts, medical materials, energy storage and other fields. [0003] Two-dimensional MOF materials have a larger aspect ratio, larger lateral dimensions and thinner nanometer thickness than three-dimensional materials, so the surface of the material is closer to the active site, and it has more advantages in the fields of catalysis, sensing, and electrochemistry. There are two main methods for the preparation of two-dimensional MOF materials: (1) top-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C63/26C07C51/41C08G83/00
CPCC07B2200/13C07C51/418C08G83/008C07C63/26
Inventor 曹澥宏刘文贤施文慧尹瑞连
Owner ZHEJIANG UNIV OF TECH
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