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A mofs-derived carbon-based material anchoring highly dispersed metal nanoclusters and its preparation method and application

A technology of carbon-based materials and nano-clusters, applied in chemical instruments and methods, physical/chemical process catalysts, electrolytic components, etc., can solve the problems of many by-products and increase the difficulty of the synthesis process, and achieve uniform microporous structure, excellent Catalytic performance, tight binding effect

Active Publication Date: 2021-07-20
WUHAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

However, such a treatment method usually increases the difficulty of the synthesis process, and there are more by-products in the product

Method used

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  • A mofs-derived carbon-based material anchoring highly dispersed metal nanoclusters and its preparation method and application
  • A mofs-derived carbon-based material anchoring highly dispersed metal nanoclusters and its preparation method and application
  • A mofs-derived carbon-based material anchoring highly dispersed metal nanoclusters and its preparation method and application

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Embodiment

[0031] This embodiment provides a method for preparing highly dispersed metal Pt nanoclusters anchored by MOFs derived carbon-based materials, comprising the following steps:

[0032] 1) Dissolve 4g of 2-methylimidazole and 3.36g of zinc nitrate hexahydrate into 80ml of methanol solution respectively, stir magnetically for 30min, then let stand at room temperature for 24h, then wash and centrifuge with methanol, and dry in a vacuum oven at 60°C for 8h Obtain white powder ZIF-8;

[0033] 2) Weigh 0.5g of the above-mentioned ZIF-8, grind it in a mortar for 10min to form a fine powder, and then heat it up to 800℃ for 4h at a heating rate of 5℃ / min under the condition of 10% hydrogen-argon mixed gas to obtain a black powder , which is a carbon-based material derived from nitrogen-doped MOFs loaded with highly dispersed metal Zn.

[0034] 3) Grind the above-mentioned black powder in a mortar for 10 minutes to form a fine powder, weigh 50 mg into 30 ml of 1.5 mM / L potassium tetrach...

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Abstract

The invention discloses a MOFs-derived carbon-based material anchoring highly dispersed metal Pt nanoclusters, a preparation method and application thereof. The average particle size of the Pt nanoclusters is 1-2nm, the MOFs-derived carbon-based material is a nitrogen-doped MOFs-derived carbon-based material, and the Pt nano-clusters are uniformly arranged in the MOFs-derived carbon-based material. Its preparation is as follows: dissolving nitrogen-doped MOFs derived carbon-based materials loaded with highly dispersed metal Zn in the precursor solution of platinum, stirring for in-situ displacement reaction, metal Zn restores metal Pt from the precursor solution, and after the reaction After post-processing, MOFs-derived carbon-based materials anchor highly dispersed metal Pt nanoclusters. The preparation method is simple, the obtained Pt nanocluster has small nanometer size, high dispersion, highly exposed active center, excellent catalytic HER performance, and good electrochemical stability.

Description

technical field [0001] The invention relates to the technical field of Pt-based materials, in particular to a MOFs-derived carbon-based material anchoring highly dispersed metal Pt nanoclusters and a preparation method and application thereof. Background technique [0002] Hydrogen, as a clean and sustainable energy carrier, is known as an effective alternative to fossil fuels. The hydrogen evolution reaction (HER) is an important one-step reaction in the cathode of hydrogen production by electrolysis of water. Pt-based materials, as the most excellent HER catalysts at present, have the disadvantages of high price and low crustal reserves. Hydrogen production from water is crucial. [0003] The current common solution is to construct platinum-based nanoalloys and control the morphology of platinum-based nanomaterials to expose more catalytic active sites. However, such a treatment method usually increases the difficulty of the synthesis process, and there are many by-produ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/02B01J35/10C25B1/04C25B11/091B01J35/00
CPCB01J27/24C25B1/04C25B11/093B01J35/33B01J35/61B01J35/40Y02E60/36
Inventor 章嵩董缘阳晓宇应杰肖宇轩
Owner WUHAN UNIV OF TECH
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