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A carbon dioxide electrocatalytic reduction film and its preparation method and application

A technology of carbon dioxide and electrocatalysis, which is applied in the field of chemical materials, can solve problems such as the inability to prepare carbon dioxide electrocatalytic films according to product requirements, low electrocatalytic efficiency, and poor product selectivity, achieving good research value, simple operation, and increased contact ratio The effect of surface area

Active Publication Date: 2021-08-31
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a carbon dioxide electrocatalytic reduction film and its preparation method and application, aiming to solve the problem of low electrocatalytic efficiency and poor product selectivity of the carbon dioxide electrocatalytic material prepared by the prior art. And the preparation process is cumbersome and the corresponding carbon dioxide electrocatalytic film cannot be prepared according to the product requirements

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  • A carbon dioxide electrocatalytic reduction film and its preparation method and application
  • A carbon dioxide electrocatalytic reduction film and its preparation method and application
  • A carbon dioxide electrocatalytic reduction film and its preparation method and application

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Embodiment 1

[0054] A carbon dioxide electrocatalytic reduction film is composed of nano-particle Cu-Sn metal alloy. The catalytic material is prepared by vacuum thermal evaporation and co-evaporation technology. The preparation method is: cutting 99.999% high-purity copper wire into 1 cm The left and right sections were ultrasonically dried with acetone, ethanol, and deionized water for 10 minutes each, placed in a tungsten boat, and fixed in the No. 3 evaporation source of the thermal evaporation chamber. Use the same method to wash and dry 99.999% high-purity tin particles, place them in a tungsten boat, and fix them in the No. 1 evaporation source of the thermal evaporation chamber. Paste the glassy carbon electrode to be evaporated on the thermal evaporation tray, and fix it on the turntable above the evaporation source. Close the sealing door of the evaporation chamber tightly and start the vacuuming procedure. When the vacuum reaches 5x10 -7 When Pa is below, start the thermal eva...

Embodiment 2

[0056] A carbon dioxide electrocatalytic reduction film is composed of nano-particle Cu-Sn metal alloy. The catalytic material is prepared by vacuum thermal evaporation and co-evaporation technology. The preparation method is: cutting 99.999% high-purity copper wire into 1 cm The left and right sections were ultrasonically dried with acetone, ethanol, and deionized water for 10 minutes each, placed in a tungsten boat, and fixed in the No. 3 evaporation source of the thermal evaporation chamber. Use the same method to wash and dry 99.999% high-purity tin particles, place them in a tungsten boat, and fix them in the No. 1 evaporation source of the thermal evaporation chamber. Paste the glassy carbon electrode to be evaporated on the thermal evaporation tray, and fix it on the turntable above the evaporation source. Close the sealing door of the evaporation chamber tightly and start the vacuuming procedure. When the vacuum reaches 5x10 -7 When Pa is below, start the thermal eva...

Embodiment 3

[0058] A carbon dioxide electrocatalytic reduction film is composed of nano-particle Cu-Sn metal alloy. The catalytic material is prepared by vacuum thermal evaporation and co-evaporation technology. The preparation method is: cutting 99.999% high-purity copper wire into 1 cm The left and right sections were ultrasonically dried with acetone, ethanol, and deionized water for 10 minutes each, placed in a tungsten boat, and fixed in the No. 3 evaporation source of the thermal evaporation chamber. Use the same method to wash and dry 99.999% high-purity tin particles, place them in a tungsten boat, and fix them in the No. 1 evaporation source of the thermal evaporation chamber. Paste the glassy carbon electrode to be evaporated on the thermal evaporation tray, and fix it on the turntable above the evaporation source. Close the sealing door of the evaporation chamber tightly and start the vacuuming procedure. When the vacuum reaches 5x10 -7 When Pa is below, start the thermal eva...

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Abstract

The invention discloses a carbon dioxide electrocatalytic reduction film and its preparation method and application, wherein the method includes the steps of: placing copper wires and tin particles in different positions of a thermal evaporation chamber as different evaporation sources; The thermal evaporation tray is fixed on the turntable above the evaporation source, and the thermal evaporation chamber is evacuated; when the thermal evaporation chamber is evacuated to less than 5×10 ‑ 7 Pa, start the thermal evaporation program, by controlling the thermal evaporation rate of Cu and Sn, make the carbon dioxide electrocatalytic reduction film, its material is nano-scale Cu x sn 100‑x Homogeneous solid solution alloy, and the ratio of Cu and Sn is continuously adjustable, where 0

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to a carbon dioxide electrocatalytic reduction film and its preparation method and application. Background technique [0002] With the increasing dependence of human beings on fossil fuels and the reduction of green area year by year due to a large number of logging and open land, according to the current development trend, at the end of the 21st century, CO 2 The concentration will be as high as 1000ppm, and the temperature of the earth will be so hot that it is difficult for human beings to survive. However, as a potential carbon source, CO 2 The effective utilization rate is very low. Therefore, looking for efficient use of CO 2 The method of converting it into usable carbon products has become a research hotspot in the whole society. By changing the CO 2 , can reduce atmospheric CO 2 concentration, improve the greenhouse effect, and achieve a benign carbon cycle. Current...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B3/26C25B1/23C25B11/089C23C14/24C23C14/54C23C14/18B01J23/80
CPCC25B1/00C23C14/24C23C14/18C23C14/542B01J23/80C25B11/051B01J35/33Y02E60/36
Inventor 林鹏吴天承徐喆曹雨曾燮榕
Owner SHENZHEN UNIV