Ternary MOF nanosheet array material as well as preparation method and application thereof

A nanosheet array, hydrothermal reaction technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of negative environment and resources, many preparation steps, low catalytic activity, etc., to achieve low production cost, dispersed The effect of good performance and large active surface area

Active Publication Date: 2019-01-22
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the catalytic activity of traditional catalysts for electrolysis of water is low, and most of the preparation steps are more, which has a negative impact on the environment and resources

Method used

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  • Ternary MOF nanosheet array material as well as preparation method and application thereof
  • Ternary MOF nanosheet array material as well as preparation method and application thereof
  • Ternary MOF nanosheet array material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of a ternary MOF nanosheet array material, the preparation method comprising the following steps:

[0035] S1: Put the nickel sheet with impurities on the surface into hydrochloric acid, ethanol and double distilled water in sequence for ultrasonic cleaning for 15 minutes respectively;

[0036] S2: Dissolve 1mmol of nickel salt, 0.2mmol of iron salt, 0.02mmol of cobalt salt and 4mmol of organic ligand 2-methylimidazole in 35mL of methanol and pour into the reaction kettle, immerse the treated foam nickel into the mixture, and tighten the kettle Cover, react at 150°C for 4h, take out the reactor and cool it down to room temperature naturally, rinse with ethanol and double distilled water, and dry at 60°C overnight to obtain a ternary iron-cobalt-nickel MOF nanosheet array material loaded on nickel foam, The ternary MOF nanosheet material (NiFeCo-ZIF / NF) loaded on nickel foam is obtained, and its SEM image is as follows figure 1 As shown, the TEM ima...

Embodiment 2

[0041] A preparation method of a ternary MOF nanosheet array material, the preparation method comprising the following steps:

[0042] S1: Put the nickel sheet with impurities on the surface into hydrochloric acid, ethanol and double distilled water for 15 minutes respectively for ultrasonic cleaning;

[0043] S2: Dissolve 1mmol of nickel salt, 0.25mmol of iron salt, 0.02mmol of cobalt salt and 4mmol of organic ligand 2-methylimidazole in 35mL of methanol and pour it into the reaction kettle, immerse the treated foamed nickel into the mixture, and tighten the kettle Cover, react at 160°C for 4 hours, take out the reaction vessel and cool it down to room temperature naturally, rinse with ethanol and double distilled water, and dry at 60°C overnight to obtain a ternary iron-cobalt-nickel MOF nanosheet array material loaded on nickel foam. The ternary MOF nanosheet material (NiFeCo-ZIF / NF) loaded on the nickel foam is obtained, and its SEM image is as follows Figure 7 shown.

[...

Embodiment 3

[0046] A preparation method of a ternary MOF nanosheet array material, the preparation method comprising the following steps:

[0047] S1: Put the nickel sheet with impurities on the surface into hydrochloric acid, ethanol and double distilled water for 15 minutes respectively for ultrasonic cleaning;

[0048] S2: Dissolve 1mmol of nickel salt, 0.2mmol of iron salt, 0.03mmol of cobalt salt and 4mmol of organic ligand 2-methylimidazole in 35mL of methanol and pour it into the reaction kettle, immerse the treated foamed nickel into the mixture, and tighten the kettle Cover, react at 160°C for 6h, take out the reactor and cool it down to room temperature naturally, rinse with ethanol and double distilled water, and dry at 60°C overnight to obtain a ternary iron-cobalt-nickel MOF nanosheet array material loaded on nickel foam, The ternary MOF nanosheet material (NiFeCo-ZIF / NF) loaded on nickel foam is obtained, and its SEM image is as follows Figure 8 shown.

[0049] The applic...

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Abstract

The invention provides a ternary MOF nanosheet array material as well as a preparation method and application thereof, in a high-temperature high-pressure reaction kettle, methanol is used as a reaction solvent, a nickel salt, an iron salt, a cobalt salt and organic ligand 2-methylimidazole are added according to a ratio for mixing evenly, and a high-pressure environment is generated by heating the reaction system to prepare the ternary MOF nanosheet array material. Compared with the prior art, the product obtained by the preparation method disclosed by the invention is high in purity, good indispersibility, good in reproducibility and low in production cost, and can be controlled, and a stable and uniform morphology structure is formed by controlling the dosage and concentration of the raw materials and the reaction temperature and time. The prepared ternary MOF nanosheet array material grows on foamed nickel and can be directly used as an electrode material, so that long cycling stability and large active surface area are achieved, and the ternary MOF nanosheet array material has a potential application value in the aspect of oxygen evolution reaction.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a ternary MOF nanosheet array material, a preparation method and an application thereof. Background technique [0002] Growing global energy demand, depletion of fossil fuels, and associated negative environmental impacts have prompted intensive research into various types of clean and sustainable energy conversion and storage technologies. To address the urgent need for clean and sustainable energy, electrochemical water splitting with hydrogen and oxygen is an environmentally friendly alternative to obtain clean fuels from renewable sources. The produced hydrogen and oxygen are widely regarded as sustainable and sufficient energy carriers, capable of solving current energy energy problems due to high energy density and carbon-free storage upon release. [0003] However, the catalytic activity of traditional catalysts for electrolysis of water is low, and most...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B11/03C25B11/06C23C18/50B01J31/18B01J31/16B82Y30/00
CPCB01J31/1691B01J31/1815B82Y30/00C23C18/50C25B1/04C25B11/031C25B11/057C25B11/091Y02E60/36
Inventor 张小俊丁孟梦
Owner ANHUI NORMAL UNIV
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