An Electrochemical and Rapid Synthesis of Bimetallic Zn/co-Zif-8

A technology of co-zif-8 and bimetal, which is applied in the field of electrochemical rapid synthesis of bimetal Zn/Co-ZIF-8, can solve the problems of high energy consumption, low yield, and long time consumption, and achieve low energy consumption, The effect of increasing the specific surface area and the method is simple and controllable

Inactive Publication Date: 2021-07-09
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above two methods are time-consuming, high energy consumption and low yield

Method used

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  • An Electrochemical and Rapid Synthesis of Bimetallic Zn/co-Zif-8
  • An Electrochemical and Rapid Synthesis of Bimetallic Zn/co-Zif-8
  • An Electrochemical and Rapid Synthesis of Bimetallic Zn/co-Zif-8

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] At room temperature, use 1500 sandpaper-polished zinc flakes as cathode and anode poles, add 0.1g dimethylimidazole, 0.6g conductive salt and 0.08g Co(NO 3 ) 2 ·6H 2 O was dissolved in 10mL of DMF and 40mL of ethanol solution, sonicated for 6min as the solvent system. Turn on the power supply, adjust the reaction voltage to 5-9V, and the reaction time is 2 hours. The obtained product is washed once and twice with DMF and ethanol respectively, and centrifuged for 6 minutes at a speed of 8000 r / min. The resultant was placed in a drying oven at 80° C. for 1 h to prepare a bimetallic Zn / Co-ZIF-8 material, labeled as sample A1.

specific Embodiment approach 2

[0030] Embodiment 2: This embodiment differs from Embodiment 1 in that the amount of conductive salt added is 0.4-0.6 g, and other steps and parameters are the same as Embodiment 1.

specific Embodiment approach 3

[0032] Embodiment 3: This embodiment differs from Embodiment 1 or 2 in that the amount of metal cobalt salt added is 0.02-0.1 g, and other steps and parameters are the same as Embodiment 1 or 2.

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Abstract

The invention discloses a method for electrochemically rapidly synthesizing bimetallic Zn / Co-ZIF-8, which can successfully reduce the synthesis time to 5 min. The specific steps of the synthesis method are as follows: take 2-methylimidazole and tetrabutylammonium bromide with a conjugated structure and a certain amount of metal cobalt salt in a beaker, then add N,N-dimethylformamide and Ethanol, stirring ultrasonically to make it dissolve evenly; use zinc flakes as the negative and positive stages, mix the uniform solution as the electrolyte, and react with electricity; centrifuge the reacted product to remove the upper liquid, and then use N,N-dimethylformamide Wash with ethanol once and twice respectively; dry at high temperature to obtain bimetallic Zn / Co‑ZIF‑8 solid powder. The present invention synthesizes bimetallic Zn / Co-ZIF-8 through an electrochemical method, which not only has simple operation and mild conditions, but also greatly shortens the reaction time and improves the synthesis yield. The synthesized material not only contains two kinds of metals, but also has a high specific surface area and a stable structure, and has a good application prospect in the preparation of supercapacitors.

Description

technical field [0001] The invention belongs to the field of preparation of multi-metal-doped metal-organic frameworks, and in particular relates to a method for electrochemically rapidly synthesizing bimetallic Zn / Co-ZIF-8. Background technique [0002] Metal Organic Frameworks (MOFs) are a class of crystalline porous materials with a periodic network structure formed by self-assembly of inorganic metal-centered metal ions (or metal clusters) and bridging organic ligands. . It is not only different from inorganic porous materials, but also different from general organic complexes. It has both the rigidity of inorganic materials and the flexibility of organic materials. The high porosity, low density, large specific surface area, regular channel, adjustable pore size, structural diversity and tailorability of MOFs make them present great development potential and attractive development prospects in modern materials research. For example, gas adsorption and separation, gas ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 孙晓君赵雪静魏金枝张婷张养鹏
Owner HARBIN UNIV OF SCI & TECH
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