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Bi-In-coated Cu foam nanomaterial as well as preparation method and application thereof

A nanomaterial, bi-in technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of hydrogen evolution side reaction, poor product selectivity, low current density, etc., to achieve high Catalytic activity, large specific surface area, effect of reducing resistance

Pending Publication Date: 2021-06-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as a stable gas molecule, the effective reduction of carbon dioxide needs to face many challenges, such as high reaction energy barrier, high overpotential in electrochemical process, poor product selectivity, low current density, poor stability, and hydrogen evolution side reaction. Wait

Method used

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  • Bi-In-coated Cu foam nanomaterial as well as preparation method and application thereof
  • Bi-In-coated Cu foam nanomaterial as well as preparation method and application thereof
  • Bi-In-coated Cu foam nanomaterial as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Preparation of Bi-In@Cu foam nanomaterials:

[0035] (1) Weigh 0.5mmol (0.1931g) of Bi(C 2 h 3 o 2 ) 3 Solid and 0.5mmol (0.1861g) of disodium edetate solid were added to a 100mL beaker, a certain amount of double distilled water was added and stirred at room temperature to dissolve until the solution was clear, then transferred to a 250mL volumetric flask, Recorded as solution A;

[0036] (2) Weigh 0.005mmol (0.0015g) of In(NO 3 ) 3 Add the solid to a 100mL beaker, add a certain amount of double-distilled water and stir at room temperature to dissolve until the solution is clear, then transfer to a 250mL volumetric flask, and record it as solution B;

[0037] (3) Take a 50mL beaker, add 15mL of solution A and 15mL of solution B respectively, and stir evenly at room temperature to obtain mixed solution C;

[0038] (4) Take a piece of 1.0cm×1.5cm×1.0mm copper foam, ultrasonically in 0.5M HCl and double-distilled water for 10 minutes, and then use absorbent paper t...

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Abstract

The invention discloses a Bi-In-coated Cu foam nanomaterial and a preparation method and application thereof. According to the invention, an in-situ electrochemical deposition method is adopted, bismuth is used as a main metal, indium is introduced as an auxiliary metal, and the complexing effect of a complexing agent is utilized to induce bismuth salt and indium salt in an aqueous solution to realize uniform reduction growth of the bimetallic nanomaterial on a foamy copper substrate material under the conditions of normal temperature and normal pressure, so a bimetallic synergistic effect is formed, and an electronic structure of metal bismuth is adjusted; and thus, the binding energy between a catalyst and a key intermediate (namely OCHO*) is adjusted, and the catalyst shows very high catalytic activity in the process of generating formic acid by electrocatalytic reduction of CO2.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of electrocatalytic materials, and specifically relates to a Bi-In@Cu foam nano material and its preparation method and application. The Bi-In@Cu foam nano material prepared by the method has a relatively large specific surface area and rich pore structure, which can be applied in the electrocatalytic reduction of carbon dioxide. Background technique [0002] Since the industrial revolution, the unscrupulous production and living activities of human beings, especially the burning of fossil fuels, have released a large amount of carbon dioxide, which has had a huge impact on the originally balanced carbon cycle. As one of the important greenhouse gases, the increasing concentration of carbon dioxide in the atmosphere will lead to major environmental problems such as global warming and sea level rise, which seriously threaten the safety of people all over the world. Therefore, it...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B3/26C25B3/07B82Y40/00B82Y30/00
CPCB82Y40/00B82Y30/00
Inventor 刘又年杨聪丞邓留何海传吴健
Owner CENT SOUTH UNIV
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