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Preparation method and application of a carbon-based metal-organic framework MOF compound derivative material

An organic framework and base metal technology, which is applied in the field of large-scale preparation of carbon-based metal-organic framework compound derived materials, can solve the problems of high cost and complex production process, and achieves short time consumption, low energy consumption and good electrical conductivity. Effect

Active Publication Date: 2021-10-26
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing metal-organic framework compound derivative materials on carbon fiber substrates with simple process and environmental protection, which overcomes the shortcomings of conventional electrode materials such as complicated production process and high cost

Method used

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  • Preparation method and application of a carbon-based metal-organic framework MOF compound derivative material
  • Preparation method and application of a carbon-based metal-organic framework MOF compound derivative material
  • Preparation method and application of a carbon-based metal-organic framework MOF compound derivative material

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Experimental program
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Effect test

Embodiment 1

[0035] Dissolve 294mg of polyacrylonitrile (PAN) into 5mL of DMF (N,N-dimethylformamide) reagent, stir and heat in a water bath at 60°C for 1-2h to obtain a colorless viscous liquid. After the PAN is fully dissolved in the DMF reagent, a 6% PAN solution can be obtained. Then, through electrospinning technology, control the parameter power supply voltage of 5 ~ 20kV, and the injection rate of the propeller is 4 ~ 10μL / min, and spin to obtain a uniform PAN film substrate; figure 1 Shown is a PAN film prepared by electrospinning.

Embodiment 2

[0037] The precursor solution of the metal framework compound ZIF-67 was prepared, and 5 mmol of cobalt nitrate hexahydrate and 20 mmol of 2-methylimidazole were dissolved in 30 mL of anhydrous methanol, fully stirred, and sonicated. First, fully soak the PAN film substrate obtained in Example 1 in the cobalt nitrate hexahydrate solution, then quickly pour the 2-methylimidazole solution into the cobalt nitrate hexahydrate solution, mix well, and let it stand at room temperature for 1-2 hours. 4h. The resulting product was washed with absolute ethanol. After washing, the material was dried at room temperature, and the ZIF-67 modified PAN film (ZIF-67@PAN) material was collected.

Embodiment 3

[0039] Cut 15mg of ZIF-67@PAN material and 100mg of melamine and place them together in a crucible (ZIF-67@PAN material and melamine should not be in direct contact with each other as much as possible). 2 Calcination was carried out in a vacuum tube furnace under the atmosphere, the heating rate was 2°C / min, the speed was raised to 700°C, and the calcination time was 0.5h. After the thermal reduction process, the carbon-based metal organic framework compound derivative material (CNT-Co @CF). Figure 2-5 Shown is the SEM image of the CNT-Co@CF material, indicating that the controllable multi-morphology self-assembly of the MOF material on the substrate under time regulation in Example 2 (as the modification time of ZIF-67 gradually increases, CNT-Co@CF The material presents different shapes such as fully covered, bamboo-shaped, small spherical, etc.). Figure 6 Shown is the TEM image of the CNT-Co@CF material, as shown in the figure, dense carbon nanotubes grown in situ catalyt...

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Abstract

The invention discloses a preparation method and application of a carbon-based metal organic framework MOF compound derivative material, and belongs to the technical field of preparation of functional nanometer materials. The treated carbon fiber / polyacrylonitrile (PAN) film is placed in the precursor solution of MOF, and the self-assembly of MOF with different shapes is realized on different substrates at room temperature. In situ catalytic growth of carbon nanotubes (CNTs) by mesothermal reduction to obtain carbon-based MOF-derived materials. The functional nanomaterials prepared by this method have physical characteristics such as high electrical conductivity, fast ion transport channels, good flexibility, and excellent self-supporting structure. In energy storage and conversion, they exhibit long service life, high-capacity electrical storage performance and excellent electrochemical stability. The preparation process of the whole material is simple, no toxic product is generated in the reaction, low energy consumption, green and environmentally friendly, and suitable for industrialized large-scale production.

Description

technical field [0001] The invention relates to a large-scale preparation method of a carbon-based metal organic framework compound derivative material that can be used as an energy storage material and a gas sensing material, and belongs to the technical field of preparation of functional nanometer materials. Background technique [0002] The transformation brought about by the low-carbon trend is irresistible. Along with the burning of fossil fuels, the annual increase of global carbon dioxide emissions has posed a huge threat to the ecological environment and seriously damaged the concept of green and sustainable development. This has led to the popularity of clean and renewable energy. The volume proportion is continuously increasing. This makes the development of new electrochemical energy sources and the improvement of their storage methods of great research significance. [0003] Electrochemical energy storage and conversion technologies, such as rechargeable batter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/60
CPCH01M4/364H01M4/38H01M4/60H01M4/602Y02E60/10
Inventor 朱纪欣宋滇杜敏
Owner NANJING TECH UNIV
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