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Conjugated conductive polymer modified copper-based catalyst as well as preparation method and application thereof

A conductive polymer and copper-based catalyst technology, applied in the field of nanotechnology and electrochemistry, can solve the problems of complex modification methods and poor hydrophobicity, and achieve the effect of improving hydrophobicity and conductivity, low cost, and simple operation

Active Publication Date: 2022-04-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of complex modification methods and poor hydrophobicity in the prior art, and propose a conjugated conductive polymer modified copper base Catalyst and its preparation method and application, the conjugated conductive polymer modified copper-based catalyst is used for electrocatalytic CO2 reduction, under the premise of ensuring good hydrophobicity and stability, the electrocatalytic High Faradaic Efficiency of Catalyzed CO2 Reduction

Method used

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  • Conjugated conductive polymer modified copper-based catalyst as well as preparation method and application thereof
  • Conjugated conductive polymer modified copper-based catalyst as well as preparation method and application thereof
  • Conjugated conductive polymer modified copper-based catalyst as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0051] Preparation of a Conjugated Conductive Polymer Modified Copper-Based Catalyst

[0052] (1) Soak 0.1g of commercial copper powder in acetone solvent and ultrasonically clean it for 6 minutes to remove organic impurities attached to the surface. The ultrasonic frequency is 40kH Z Subsequent transfer to the nitric acid solution of 0.5mol / L for soaking and washing for 3 times, then with 100mL of ultrapure water, the copper powder after the above-mentioned treatment is cleaned;

[0053] (2) transfer the cleaned copper powder in step (1) into a muffle furnace for heating and roasting treatment, the roasting temperature is 500° C., and the roasting treatment time is 3 hours, to obtain a copper oxide-based material with a clean surface and no impurities;

[0054] (3) Grind the copper oxide substrate obtained in step (2) into powder, then disperse in 1 mL of polyphenylene vinylene toluene solution with a concentration of 2 mg / mL, and carry out ultrasonic dispersion treatment at ...

Embodiment 2

[0058] Preparation of a Conjugated Conductive Polymer Modified Copper-Based Catalyst

[0059] (1) Soak 0.1g of commercial copper powder in acetone solvent and ultrasonically clean it for 30 minutes to remove organic impurities attached to the surface. The ultrasonic frequency is 20kH Z Subsequent transfer to the nitric acid solution of 0.5mol / L for soaking and washing for 3 times, then with 100mL of ultrapure water, the copper powder after the above-mentioned treatment is cleaned;

[0060] (2) transfer the cleaned copper powder in step (1) into a muffle furnace for heating and roasting treatment, the roasting temperature is 200° C., and the roasting treatment time is 4 hours, to obtain a copper oxide-based material with a clean surface and no impurities;

[0061] (3) Grind the copper oxide base material obtained in step (2) into powder, then disperse in 1 mL of acetone solution of polyphenylene ether with a concentration of 4 mg / mL, and carry out ultrasonic dispersion treatmen...

Embodiment 3

[0064] Preparation of a Conjugated Conductive Polymer Modified Copper-Based Catalyst

[0065] (1) Soak 0.1g of commercial copper powder in acetone solvent and ultrasonically clean it for 60 minutes to remove organic impurities attached to the surface. The ultrasonic frequency is 10kH Z Subsequent transfer to the nitric acid solution of 0.75mol / L for soaking and washing for 3 times, then with 100mL of ultrapure water, the copper powder after the above-mentioned treatment is cleaned;

[0066] (2) transfer the cleaned copper powder in step (1) into a muffle furnace for heating and roasting treatment, the roasting temperature is 100° C., and the roasting treatment time is 1 h, to obtain a copper oxide-based material with a clean surface and no impurities;

[0067] (3) Grind the copper oxide base material obtained in step (2) into powder, then disperse in 1 mL of polyphenylene vinylene cyclohexane solution with a concentration of 1 mg / mL, and carry out ultrasonic dispersion treatme...

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Abstract

The invention provides a conjugated conductive polymer modified copper-based catalyst and a preparation method and application thereof.The surface of the conjugated conductive polymer modified copper-based catalyst is covered with a polymer layer with the thickness of 2-5 nm, and the hydrophobicity and conductivity of an electrode material can be remarkably improved; the obtained catalyst is good in stability, a polymer layer is not prone to falling off, the Faraday efficiency of electrocatalysis is larger than 82% and the Faraday efficiency of a C2 + product is larger than 70% when the catalyst serves as the catalyst for electrocatalysis of CO2 reduction and a reversible hydrogen electrode serves as the standard under the electrolysis voltage of-0.93 volts, and excellent product selectivity and high conversion efficiency are shown.

Description

technical field [0001] The invention belongs to the field of nanotechnology and electrochemistry, and in particular relates to a copper-based catalyst modified by a conjugated conductive polymer and its preparation method and application. Background technique [0002] At present, due to the upgrading of industrial production capacity and the large-scale exploitation and utilization of fossil fuels, it is accompanied by the severe deterioration of climate and environmental problems. Among them, the high level of carbon dioxide emissions is the main cause of a series of problems. Therefore, how to effectively use renewable energy technology to reduce the content of carbon dioxide in the atmosphere and convert it into products with higher added value is not only an effective way to achieve "carbon peaking, carbon neutrality", but also a global solution Effective method of warming. The electrochemical carbon dioxide reduction reaction is a conventional catalytic process by whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/095C25B3/26
Inventor 陈光需吴祺祺杜瑞安王鹏李正健丘勇才严克友
Owner SOUTH CHINA UNIV OF TECH
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