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A bioaccumulation preparation method of transition metal monoatomic carbon materials

A transition metal, bio-enrichment technology, applied in metal processing equipment, nanotechnology for materials and surface science, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low single atom load, etc. Achieve the effects of high loading capacity, high specific surface area, and increased content

Active Publication Date: 2021-12-21
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to overcome the harsh conditions and specific equipment usually required in this prior art, inevitably using expensive or toxic precursor materials, and the traditional direct pyrolysis process products have aggregation of metal species and low loading of single atoms and other problems, providing a bioaccumulation preparation method for single atoms of transition metals

Method used

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  • A bioaccumulation preparation method of transition metal monoatomic carbon materials
  • A bioaccumulation preparation method of transition metal monoatomic carbon materials
  • A bioaccumulation preparation method of transition metal monoatomic carbon materials

Examples

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Effect test

Embodiment 1

[0033] A preparation method for biological enrichment of transition metal monoatomic carbon materials, comprising the following steps:

[0034] Step 1, preparing medium: according to the raw material components and proportions containing 4 grams of glucose, 0.85 grams of peptone, 0.85 grams of yeast powder, and the balance of water in every 100 milliliters of liquid medium, get the raw materials of each component and mix them evenly to make Dissolve the solid matter, maintain 20 minutes under the conditions of pressure 103.4 kPa vapor pressure and temperature 120 degrees to sterilize, and then obtain a sterilized liquid medium; then add 100 ml of sterilized liquid medium;

[0035] Step 2. Inoculate 0.08 g of Carotrichum sp. into 100 ml of liquid culture medium, and place it in a shaker at 28° C. for 1 day with shaking at a speed of 180 rpm;

[0036] Step 3, the transition metal complex is formulated into a 4g / L dispersion (prepared with sterile water), and added to the liquid m...

Embodiment 2

[0040] A preparation method for biological enrichment of transition metal monoatomic carbon materials, comprising the following steps:

[0041] Step 1, preparing medium: according to the raw material components and proportions containing 5 grams of glucose, 1 gram of peptone, 1 gram of yeast powder, and the balance of water in every 100 milliliters of liquid medium, get the raw materials of each component and mix them evenly to make Dissolve the solid matter, maintain 15 minutes under the conditions of pressure 103.4 kPa vapor pressure and temperature 120 degrees to sterilize, and then prepare the sterilized liquid medium; then add 100 ml of sterilized liquid medium;

[0042] Step 2. Inoculate 0.08 g of Carotrichum sp. into 100 ml of liquid culture medium, and place it in a shaker at 28° C. for 1 day with shaking at a speed of 180 rpm;

[0043] Step 3, the transition metal complex is formulated into a 5g / L dispersion (prepared with sterile water), and added to the liquid medi...

Embodiment 3

[0047] A preparation method for biological enrichment of transition metal monoatomic carbon materials, comprising the following steps:

[0048] Step 1, preparing medium: according to the raw material components and proportions containing 6 grams of glucose, 1.25 grams of peptone, 0.85 grams of yeast powder, and the balance of water in every 100 milliliters of liquid medium, get the raw materials of each component and mix them evenly to make Dissolve the solid matter, maintain 20 minutes under the conditions of pressure 103.4 kPa vapor pressure and temperature 120 degrees to sterilize, and then obtain a sterilized liquid medium; then add 100 ml of sterilized liquid medium;

[0049] Step 2: Inoculate 0.1 g of Morchella strain into 100 ml of liquid medium, and place it in a shaker at 28° C. for 1 day with shaking at a speed of 180 rpm;

[0050] Step 3, the transition metal complex is formulated into a 5g / L dispersion (prepared with sterile water), and added to the liquid medium ...

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Abstract

The invention discloses a bioconcentration preparation method of a transition metal monoatomic carbon material, comprising: preparing a liquid culture medium; inoculating fungal strains into the liquid culture medium and cultivating them with shaking; adding transition metal complexes as solutions or dispersions Added in the form of liquid medium; continue to cultivate, pour out the excess liquid medium, and wash it with deionized water, then freeze-dry it, and pyrolyze the dried sample in the protective gas, and then cool down naturally ; The pyrolysis product was added to H 2 SO 4 The solution was stirred and refluxed, then collected by centrifugation, washed with deionized water until neutral, and dried in vacuum to obtain a transition metal single-atom carbon material. By adopting the invention, the transition metal single-atom carbon material prepared has the advantages of high transition metal single-atom loading, high specific surface area, etc., and can be widely used in fields such as energy storage, catalysis, and environmental protection. The preparation method of the invention is simple, convenient to operate, cheap, environmentally friendly and easy to prepare in large quantities.

Description

technical field [0001] The invention belongs to the preparation of transition metal single-atom materials, and relates to a bio-enrichment preparation method of transition metal single atoms. The transition metal monoatomic material prepared by the invention is mainly applicable to the fields of energy storage, catalysis, environmental protection and the like. Background technique [0002] Atom-dispersed catalysts have attracted increasing attention in various reactions due to their high atom utilization and controllable coordination environment. In electrochemistry, the coordination of atomically dispersed transition metal atoms to nitrogen in metal-nitrogen-carbon materials is particularly attractive, because isolated metal-nitrogen-carbon centers have been shown to be the catalysts for various electrochemical reactions, especially oxygen Highly active sites in reduction reactions. Despite the excellent activity and selectivity of metal-nitrogen-carbon single atoms, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/15B22F1/00B22F9/04B22F9/24B82Y30/00B82Y40/00B01J23/755B01J35/10
CPCC01B32/15B22F9/24B22F9/04B01J23/755B82Y30/00B82Y40/00B22F2009/043B22F1/054B01J35/617B01J35/647
Inventor 竹文坤雷佳何嵘陈涛杨帆罗勇
Owner SOUTHWEAT UNIV OF SCI & TECH
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