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Cobalt ion-doped metal-organic framework material and preparation method thereof

A metal-organic framework and cobalt ion technology, applied in chemical instruments and methods, other chemical processes, water treatment of special compounds, etc., can solve the problem of low-cost, large-scale production of UiO-66, poor photocatalytic activity, adsorption Poor performance and other problems, to achieve enhanced photocatalytic performance, good application prospects, and good adsorption performance

Active Publication Date: 2020-08-28
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a relatively stable class of MOFs, UiO-66(Zr) has attracted extensive attention due to its excellent thermal and water stability, but UiO-66(Zr) still has problems such as poor adsorption performance and poor photocatalytic activity.
In addition, the existing processes for synthesizing UiO-66(Zr) are often complex and have low yields, making it difficult to produce UiO-66(Zr) materials at low cost and on a large scale

Method used

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  • Cobalt ion-doped metal-organic framework material and preparation method thereof
  • Cobalt ion-doped metal-organic framework material and preparation method thereof
  • Cobalt ion-doped metal-organic framework material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A metal-organic framework material doped with cobalt ions, comprising cobalt ions and UiO-66(Zr), wherein cobalt ions are doped in UiO-66(Zr).

[0036] In this example, the specific surface area of ​​the metal-organic framework material doped with cobalt ions is 815.178 m 2 / g.

[0037] A method for preparing the cobalt ion-doped metal-organic framework material of the above-mentioned embodiment, specifically, using zirconium chloride, terephthalic acid, and cobalt chloride hexahydrate as raw materials to prepare cobalt ion-doped A metal organic framework material comprising the steps of:

[0038] (1) According to the molar ratio of zirconium chloride, terephthalic acid, N,N-dimethylformamide being 1:1:162 and the molar ratio of cobalt chloride hexahydrate and zirconium chloride being 1:1, the Zirconium chloride, terephthalic acid, and cobalt chloride hexahydrate were dispersed in N,N-dimethylformamide, and stirred for 1 hour at a rotational speed of 300 r / min to obta...

Embodiment 2

[0041] A method for preparing a cobalt ion-doped metal-organic framework material is basically the same as that in Example 1, except that the molar ratio of cobalt chloride hexahydrate and zirconium chloride in Example 2 is 1:2.

[0042] The cobalt ion-doped metal-organic framework material prepared in Example 2 is named CoUiO-2.

Embodiment 3

[0044] A method for preparing a cobalt ion-doped metal-organic framework material is basically the same as that in Example 1, except that the molar ratio of cobalt chloride hexahydrate and zirconium chloride in Example 3 is 1:4.

[0045] The cobalt ion-doped metal-organic framework material prepared in Example 3 is named CoUiO-4.

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Abstract

The invention discloses a cobalt ion-doped metal organic framework material, and a preparation method thereof. The cobalt ion-doped metal organic framework material comprises cobalt ions and UiO-66(Zr), and the cobalt ions are doped in UiO-66(Zr). The preparation method comprises following steps: zirconium chloride, terephthalic acid, cobalt chloride hexahydrate, and an organic solvent are mixed and stirred so as to obtain a precursor solution; the precursor solution is subjected to hydro-thermal reaction so as to obtain the cobalt ion-doped metal organic framework material. The cobalt ion-doped metal organic framework material is large in specific surface area, excellent in dispersibility, stability, absorption performance, and photocatalysis performance, is capable of realizing high efficiency absorption on antibiotics and high efficiency degradation of antibiotics, and is promising in application prospect. The preparation method possesses following advantages: operation is convenient; synthesis is simple; raw material kinds are few; cost is low; yield is high; and the preparation method is suitable for large scale preparation.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a metal organic framework material, in particular to a cobalt ion-doped metal organic framework material and a preparation method thereof. Background technique [0002] Metal-organic frameworks (MOFs) are a class of highly crystalline porous materials formed by self-assembly of metal ions or ion clusters and organic ligands. Compared with inorganic materials, MOFs have ultra-high porosity and specific surface area, and the structural diversity and designability of MOFs make them have great potential in the fields of adsorption and photocatalysis. As a relatively stable class of MOFs, UiO-66(Zr) has attracted extensive attention due to its excellent thermal and water stability, but UiO-66(Zr) still has problems such as poor adsorption performance and poor photocatalytic activity. . In addition, the existing processes for synthesizing UiO-66(Zr) are often complex and have low yie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J20/22B01J20/30C02F1/28C02F1/30C02F101/30
CPCB01J20/226C02F1/285C02F1/30C02F2101/30C02F2305/10C08G83/008
Inventor 曹姣杨朝晖熊炜平李鑫徐锐张燕茹柯托谢靓程金佳慧
Owner HUNAN UNIV
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