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Preparation method and electro-catalysis application of chiral nickel-based metal organic framework material

A metal-organic framework and organic framework technology, applied in the field of electrocatalysis, can solve the problems of unclear application advantages of chiral metal-organic framework materials, and achieve the effects of large-scale production, good reproducibility, and reduced catalyst cost

Active Publication Date: 2022-01-07
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the use of chiral metal-organic framework materials as electrocatalytic materials, and the application advantages of chiral metal-organic framework materials in the field of electrocatalysis are not clear.

Method used

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  • Preparation method and electro-catalysis application of chiral nickel-based metal organic framework material
  • Preparation method and electro-catalysis application of chiral nickel-based metal organic framework material
  • Preparation method and electro-catalysis application of chiral nickel-based metal organic framework material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Take 8.9mg of thiazolidine-2,4-dicarboxylic acid in a 10mL glass vial, add 4mL of deionized water, disperse the mixture evenly by ultrasonic to obtain a clear solution, accurately pipette pyridine (100μL) and mix evenly, then add nitric acid hexahydrate Nickel 29.1 mg, a homogeneous clear solution was obtained by ultrasonication. The airtight glass vial was placed in an oven at 140°C for 72 hours, and then cooled to room temperature naturally. The product was a black precipitate, and no crystalline material was formed, so XRD detection could not be performed.

Embodiment 2

[0032] Take 8.9mg of thiazolidine-2,4-dicarboxylic acid in a 10mL glass vial, add 4mL of deionized water, disperse the mixture evenly by ultrasonic to obtain a clear solution, accurately pipette pyridine (100μL) and mix evenly, then add nitric acid hexahydrate Nickel 29.1 mg, a homogeneous clear solution was obtained by ultrasonication. The airtight glass vial was placed in an oven at 120°C for 72 hours, and then naturally cooled to room temperature to obtain a blue transparent bulk crystalline material (Ni-MOF), with a product yield of 65% (based on the raw material thiazolidine-2, 4-Dicarboxylic acid used for mass calculation).

[0033] figure 1 The coordination environment diagram (a) and three-dimensional packing diagram (b) of the obtained Ni-MOF are shown. Such as the coordination environment diagram ( figure 1 (a)), the smallest asymmetric unit of each Ni-MOF consists of two Ni 2+ , two TDAs, and two PYs. Among them, each Ni 2+ Coordinate with four O from two TDA ...

Embodiment 3

[0038] Take 8.9mg of thiazolidine-2,4-dicarboxylic acid in a 10mL glass vial, add 4mL of deionized water, disperse the mixture evenly by ultrasonic to obtain a clear solution, accurately pipette pyridine (100μL) and mix evenly, then add nitric acid hexahydrate Nickel 29.1 mg, a homogeneous clear solution was obtained by ultrasonication. The airtight glass vial was placed in an oven at 100°C for 72 hours, and then naturally cooled to room temperature to obtain a blue transparent bulk crystalline material with a product yield of 41% (based on the raw material thiazolidine-2,4-dicarboxylic acid mass calculations used).

[0039] The shape and size of the Ni-MOF sample prepared by this ratio and condition are uniform, but the yield of the obtained crystalline material is lower than that of Example 2. It has been detected that the structure of the Ni-MOF is the same as that of Example 2.

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Abstract

The invention provides a preparation method and electro-catalysis application of a two-dimensional chiral nickel-based metal organic framework material, which belong to the technical field of electro-catalysis. The preparation method comprises the following main preparation steps of respectively dissolving nickel salt, organic ligand thiazolidine-2, 4-dicarboxylic acid and pyridine in deionized water, uniformly mixing by ultrasonic waves, and preserving heat for 72 hours at the temperature of 100-140 DEG C, and after naturally cooling to room temperature, washing and drying to obtain the blue blocky chiral Ni-MOF electrocatalyst. The method disclosed by the invention has the advantages of low cost, simple synthesis process, no need of a surfactant to participate in regulation, high yield of reaction products and the like, and is suitable for large-scale production. When the prepared chiral Ni-MOF material is used as an electrocatalyst, the performance is stable, and the prepared chiral Ni-MOF material has excellent activity of electrocatalyzing oxidation of methanol, ethanol and n-propanol and is suitable for the field of electrocatalysis.

Description

technical field [0001] The invention belongs to the technical field of electrocatalysis, and relates to the preparation of nickel-based chiral metal-organic framework materials and the application of electrocatalysis. [0002] technical background [0003] Since entering the 21st century, human society has developed rapidly, but behind the economic development is the cost of consuming limited fossil energy and sacrificing the natural environment. Due to environmental pressure, people's demand for new, clean and sustainable energy systems is increasing. With increasing urgency, direct alcohol fuel cells (DAFCs) have been extensively studied due to their advantages such as low-temperature fast start-up, clean and environmentally friendly fuel, and simple cell structure. And some direct alcohol fuel cells, such as direct methanol fuel cells, have been put into experimental application. However, the currently used direct alcohol fuel cell catalyst electrode materials have disadv...

Claims

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Application Information

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IPC IPC(8): C08G83/00H01M4/90H01M8/1011C25B11/085C25B3/23
CPCC08G83/008H01M4/9008H01M8/1011H01M8/1013C25B11/085C25B3/23Y02E60/50Y02P70/50
Inventor 李东升王延江孙亚亚伍学谦吴亚盘兰亚乾吴涛张健杨慧颖
Owner CHINA THREE GORGES UNIV
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