CuZn bi-metal organic framework material and preparing method thereof

An organic framework and bimetallic technology, applied in the field of organic-inorganic hybrid materials, can solve the problems of long preparation time and low replacement rate

Inactive Publication Date: 2016-06-29
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, MinKim soaked UiO-66(Zr) in TiCl 4 (THF) 2 solution to obtain UiO-66(Zr/Ti); MIL-53(Al)-Br and MIL-53(Fe)-Br with the same ligand and topological structure were exchange...

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  • CuZn bi-metal organic framework material and preparing method thereof
  • CuZn bi-metal organic framework material and preparing method thereof
  • CuZn bi-metal organic framework material and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0046] 2.97g zinc nitrate hexahydrate was dissolved in 15mL deionized water to form solution A, 1.64g dimethylimidazole was dissolved in 18.8g ammonia water (NH 3 The mass concentration is 28%) to form solution B, solution B is added dropwise in solution A, in the mixed solution Zn:Hmim:NH 3 :H 2 O molar ratio 1:2:32:157. After stirring at room temperature for 10 min, the resulting solid was centrifuged, washed with deionized water until the supernatant pH ≈ 7, then centrifuged and dried at 60°C for 12 h to obtain a Zn-containing metal-organic framework material ZIF-8. The ZIF-8 prepared by weighing 0.5g and 0.532g copper nitrate trihydrate were dissolved in deionized water (H 2 O): ethanol: N, N-dimethylformyl (DMF) = 1:1:1 (volume ratio) mixed solution (45mL), stirred until a uniform suspension was formed, then added 0.256g1,3,5 -Benzenetricarboxylic acid, stirred for 15min, transferred the solution to a 100mL stainless steel reaction kettle with a polytetrafluoroethylene...

Embodiment 2

[0048] 2.97g zinc nitrate hexahydrate was dissolved in 15mL deionized water to form solution A, 1.64g dimethylimidazole was dissolved in 18.8g ammonia water (NH 3 The mass concentration is 28%) to form solution B, solution B is added dropwise in solution A, in the mixed solution Zn:Hmim:NH 3 :H 2 O molar ratio 1:2:32:157. After stirring at room temperature for 10 min, the resulting solid was centrifuged, washed with deionized water until the supernatant pH ≈ 7, then centrifuged and dried at 60°C for 12 h to obtain a Zn-containing metal-organic framework material ZIF-8. The ZIF-8 prepared by weighing 0.5g and 1.596g copper nitrate trihydrate were dissolved in deionized water (H 2 O): ethanol: N, N-dimethylformyl (DMF) = 1:0.5:0.2 (volume ratio) mixed solution (51mL), stirred until a uniform suspension was formed, then added 0.512g1,3,5 -Benzenetricarboxylic acid, stirred for 15min, transferred the solution to a 100mL stainless steel reactor equipped with a polytetrafluoroeth...

Embodiment 3

[0050] 2.97g zinc nitrate hexahydrate was dissolved in 15mL deionized water to form solution A, 1.64g dimethylimidazole was dissolved in 18.8g ammonia water (NH 3 The mass concentration is 28%) to form solution B, solution B is added dropwise in solution A, in the mixed solution Zn:Hmim:NH 3 :H 2 O molar ratio 1:2:32:157. After stirring at room temperature for 10 min, the resulting solid was centrifuged, washed with deionized water until the supernatant pH ≈ 7, then centrifuged and dried at 60°C for 12 h to obtain a Zn-containing metal-organic framework material ZIF-8. The ZIF-8 prepared by weighing 0.5g and 1.064g copper nitrate trihydrate were dissolved in deionized water (H 2 O): Ethanol: N, N-dimethylformyl (DMF) = 1:0.5:2 (volume ratio) mixed solution (87.5mL), stirred until a uniform suspension was formed, then added 0.384g1,3, 5-Benzenetricarboxylic acid, stirred for 15min, transferred the solution to a 100mL stainless steel reactor equipped with polytetrafluoroethyl...

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Abstract

The invention discloses a CuZn bi-metal organic framework material and a preparing method thereof.The metal organic framework material ZIF-8 containing metal Zn and soluble copper salt are dissolved in a mixed solvent containing H2O, ethyl alcohol and N,N-dimethylformamide, and then 1,3,5-benzene tricarboxylic acid is added for hydrothermal crystallization, separation, washing and drying, so that the CuZn bi-metal organic framework material is obtained.Different from traditional bi-metal MOF preparing methods, the preparing method has the advantages that preparing time is short, replacement rate is high, and the crystal structure of the product varies.

Description

technical field [0001] The invention relates to the technical field of organic-inorganic hybrid materials, in particular to a CuZn bimetallic organic framework material and a preparation method thereof. Background technique [0002] Metal-organic frameworks (MetalOrganicFrameworks, MOFs) use the complexation between metal ions and organic ligands to self-assemble to form ordered crystal materials with high specific surface area, porosity and adjustable pore structure. The preparation method of single metal MOF has been quite mature, which can flexibly adjust the metal-ligand combination, pore structure and crystal structure. However, the preparation method of bimetallic MOF is still immature. At present, there are mainly the following preparation methods: [0003] 1. Core-shell structure bimetallic MOF: MOF-A containing metal A is placed in a solution containing metal B precursor and organic ligand, and MOF-AMOF-B is prepared under room temperature stirring or hydrothermal ...

Claims

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Application Information

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IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 王慧张辰高鹏钟良枢魏伟孙予罕杨海艳廖珮懿
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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