MOFs derived carbon-based material anchored high-dispersion metal Pt nanocluster, and preparation method and application thereof

A carbon-based material, nano-cluster technology, applied in chemical instruments and methods, electrodes, electrolysis processes, etc., can solve the problems of many by-products and increase the difficulty of the synthesis process, and achieve excellent catalytic performance, excellent catalytic performance, and chemical stability. good effect

Active Publication Date: 2020-08-25
WUHAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

However, such a treatment method usually increases the difficulty of

Method used

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  • MOFs derived carbon-based material anchored high-dispersion metal Pt nanocluster, and preparation method and application thereof
  • MOFs derived carbon-based material anchored high-dispersion metal Pt nanocluster, and preparation method and application thereof
  • MOFs derived carbon-based material anchored high-dispersion metal Pt nanocluster, and preparation method and application thereof

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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 an MOFs derived carbon-based material anchored high-dispersion metal Pt nanocluster as well as a preparation method and application thereof. The average particle size of Pt nanoclusters is 1-2nm; an MOFs derived carbon-based material is a nitrogen-doped MOFs derived carbon-based material; and the Pt nanoclusters are uniformly distributed in the MOFs derived carbon-based material. The preparation method comprises the following steps of: dissolving the nitrogen-doped MOFs derived carbon-based material loaded with high-dispersion metal Zn into a precursor solution of platinum; performing stirring to carry out an in-situ replacement reaction so as to reduce metal Pt from the precursor solution by the metal Zn; and carrying out post-treatment after the reaction is finished, so as to obtain the MOFs derived carbon-based material anchored high-dispersion metal Pt nanocluster. The preparation method is simple; and the obtained Pt nanocluster is small in nano size, highin dispersion, highly exposed in active center, excellent in HER catalysis performance and good in 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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IPC IPC(8): B01J27/24B01J35/02B01J35/10C25B1/04C25B11/08
CPCB01J27/24B01J35/0033B01J35/023B01J35/1004C25B1/04C25B11/093Y02E60/36
Inventor 章嵩董缘阳晓宇应杰肖宇轩
Owner WUHAN UNIV OF TECH
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