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A method for preparing two-dimensional metal-organic framework materials and its application

A metal-organic framework and organic molecule technology, applied in the field of preparation of two-dimensional metal-organic framework materials, can solve the problems of unsuitability for industrialization, slow reaction speed, complicated process, etc., and achieve the effect of simple equipment, fast reaction and simple reaction process

Active Publication Date: 2020-07-21
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods generally have complex processes, slow reaction speed, low yield, and are not suitable for industrialization.

Method used

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  • A method for preparing two-dimensional metal-organic framework materials and its application
  • A method for preparing two-dimensional metal-organic framework materials and its application
  • A method for preparing two-dimensional metal-organic framework materials and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of Metal Organic Framework UiO-66-NH 2

[0033] The zirconium tetrachloride of 0.1864g and the 2-aminoterephthalic acid of 0.07246g are dissolved in the DMF of 40mL respectively, add zirconium tetrachloride DMF solution and 10mL acetic acid in the DMF solution of 2-aminoterephthalic acid, After ultrasonic mixing, put it into an oven and react at 120°C for 24h. Centrifuge, wash 3 times with DMF, exchange and activate with methanol, soak for 12h, 2 times in total, wash 3 times with methanol, and dry to get UiO-66-NH 2 .

[0034] At room temperature, rhodamine B and UiO-66-NH2 were mixed evenly at a mass ratio of 1:6, ground for 8 minutes, and the resulting product was washed, centrifuged, and dried to obtain two-dimensional MOFs nanosheets. Then carry out XRD to the obtained sample, SEM characterizes, as figure 1 and figure 2 shown.

Embodiment 2-5

[0036] Metal-organic framework material UiO-66-NH was prepared according to the method of Example 1 2

[0037] At room temperature, rhodamine B and UiO-66-NH 2 Mix evenly according to the mass ratio of 1:1, 1:4, 1:5, and 1:11 respectively, grind for 8 minutes, wash, centrifuge, and dry the obtained product to obtain two-dimensional MOFs nanosheets.

Embodiment 6-12

[0039] Metal-organic framework material UiO-66-NH was prepared according to the method of Example 1 2

[0040] At room temperature, combining several different organic molecules with UiO-66-NH 2 Mix evenly at a mass ratio of 1:5, grind for 8 minutes, and small organic molecules include curcumin, p-toluic acid, 2-aminoterephthalic acid, benzoic acid, isophthalic acid, and dipicolinic acid. The obtained product is washed, centrifuged, and dried to obtain two-dimensional MOFs nanosheets.

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PUM

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Abstract

The invention discloses a method for preparing a two-dimensional MOFs material, which includes the following steps: organic molecules and a metal organic framework material are mixed under normal temperature, the mixture is then milled or ball-milled, and after washing, centrifuging and drying, the two-dimensional metal organic framework material is obtained. the reaction conditions for the preparation of the two-dimensional MOFs are mild, reaction is fast, yield is high, solvent does not need to be added, moreover, the reaction process is simple, needed equipment is simple, and a ball mill can be used for implementing large-scale production.

Description

technical field [0001] The invention relates to the field of metal-organic framework materials, in particular to a method for preparing two-dimensional metal-organic framework materials and applications thereof. Background technique [0002] Metal organic frameworks (MOFs) are porous compounds with periodic network structures formed by the self-assembly of metal ions or metal clusters and organic ligands (binary or polycarboxylic acids, nitrogen-containing heterocyclic compounds, etc.) , which has the advantages of large specific surface area, high porosity, adjustable structure, and good symmetry, and is widely used in the fields of gas storage, separation, drug delivery, catalysis, and sensing. [0003] The study of 2D materials such as graphene has further sparked intense interest in other organic, metal-organic 2D layered nanomaterials with similar structures. These two-dimensional materials have attracted attention due to their excellent chemical tailorability, long-ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J31/22C07C29/56C07C35/17
CPCB01J31/2239B01J2231/52C07C29/56C08G83/008C07C35/17
Inventor 霍峰蔚范韵王彧张波刘婉
Owner NANJING TECH UNIV
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